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android / toolchain / jdk / jdk21 / HEAD / . / src / hotspot / share / prims / whitebox.cpp
blob: 4a7e69ca8b42e4674aebda5807b7511d3c788b9b [file] [log] [blame]
/*
* Copyright (c) 2012, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "cds.h"
#include "cds/archiveHeapLoader.hpp"
#include "cds/cdsConstants.hpp"
#include "cds/filemap.hpp"
#include "cds/heapShared.hpp"
#include "cds/metaspaceShared.hpp"
#include "classfile/classLoaderDataGraph.hpp"
#include "classfile/classLoaderStats.hpp"
#include "classfile/javaClasses.inline.hpp"
#include "classfile/modules.hpp"
#include "classfile/protectionDomainCache.hpp"
#include "classfile/stringTable.hpp"
#include "classfile/symbolTable.hpp"
#include "classfile/systemDictionary.hpp"
#include "classfile/vmSymbols.hpp"
#include "code/codeCache.hpp"
#include "compiler/compilationPolicy.hpp"
#include "compiler/directivesParser.hpp"
#include "compiler/methodMatcher.hpp"
#include "gc/shared/concurrentGCBreakpoints.hpp"
#include "gc/shared/gcConfig.hpp"
#include "gc/shared/gcLocker.inline.hpp"
#include "gc/shared/genArguments.hpp"
#include "gc/shared/genCollectedHeap.hpp"
#include "jvmtifiles/jvmtiEnv.hpp"
#include "logging/log.hpp"
#include "memory/iterator.hpp"
#include "memory/metadataFactory.hpp"
#include "memory/metaspace/testHelpers.hpp"
#include "memory/metaspaceUtils.hpp"
#include "memory/oopFactory.hpp"
#include "memory/resourceArea.hpp"
#include "memory/universe.hpp"
#include "oops/array.hpp"
#include "oops/compressedOops.hpp"
#include "oops/constantPool.inline.hpp"
#include "oops/klass.inline.hpp"
#include "oops/method.inline.hpp"
#include "oops/objArrayKlass.hpp"
#include "oops/objArrayOop.inline.hpp"
#include "oops/oop.inline.hpp"
#include "oops/typeArrayOop.inline.hpp"
#include "prims/jvmtiEnvBase.hpp"
#include "prims/resolvedMethodTable.hpp"
#include "prims/wbtestmethods/parserTests.hpp"
#include "prims/whitebox.inline.hpp"
#include "runtime/arguments.hpp"
#include "runtime/atomic.hpp"
#include "runtime/deoptimization.hpp"
#include "runtime/fieldDescriptor.inline.hpp"
#include "runtime/flags/jvmFlag.hpp"
#include "runtime/flags/jvmFlagAccess.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/handshake.hpp"
#include "runtime/interfaceSupport.inline.hpp"
#include "runtime/javaCalls.hpp"
#include "runtime/javaThread.inline.hpp"
#include "runtime/jniHandles.inline.hpp"
#include "runtime/os.hpp"
#include "runtime/stackFrameStream.inline.hpp"
#include "runtime/synchronizer.hpp"
#include "runtime/threadSMR.hpp"
#include "runtime/vframe.hpp"
#include "runtime/vm_version.hpp"
#include "services/mallocSiteTable.hpp"
#include "services/memoryService.hpp"
#include "services/memTracker.hpp"
#include "utilities/align.hpp"
#include "utilities/debug.hpp"
#include "utilities/elfFile.hpp"
#include "utilities/exceptions.hpp"
#include "utilities/macros.hpp"
#include "utilities/nativeCallStack.hpp"
#include "utilities/ostream.hpp"
#if INCLUDE_G1GC
#include "gc/g1/g1Arguments.hpp"
#include "gc/g1/g1CollectedHeap.inline.hpp"
#include "gc/g1/g1ConcurrentMark.hpp"
#include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
#include "gc/g1/heapRegionManager.hpp"
#include "gc/g1/heapRegionRemSet.inline.hpp"
#endif // INCLUDE_G1GC
#if INCLUDE_PARALLELGC
#include "gc/parallel/parallelScavengeHeap.inline.hpp"
#endif // INCLUDE_PARALLELGC
#if INCLUDE_ZGC
#include "gc/z/zAddress.inline.hpp"
#endif // INCLUDE_ZGC
#if INCLUDE_JVMCI
#include "jvmci/jvmciEnv.hpp"
#include "jvmci/jvmciRuntime.hpp"
#endif
#ifdef LINUX
#include "os_linux.hpp"
#include "osContainer_linux.hpp"
#include "cgroupSubsystem_linux.hpp"
#endif
#define CHECK_JNI_EXCEPTION_(env, value) \
do { \
JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
THREAD->clear_pending_jni_exception_check(); \
if (HAS_PENDING_EXCEPTION) { \
return(value); \
} \
} while (0)
#define CHECK_JNI_EXCEPTION(env) \
do { \
JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
THREAD->clear_pending_jni_exception_check(); \
if (HAS_PENDING_EXCEPTION) { \
return; \
} \
} while (0)
bool WhiteBox::_used = false;
volatile bool WhiteBox::compilation_locked = false;
class VM_WhiteBoxOperation : public VM_Operation {
public:
VM_WhiteBoxOperation() { }
VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
bool allow_nested_vm_operations() const { return true; }
};
WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
return (jlong)(void*)JNIHandles::resolve(obj);
WB_END
WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
return heapOopSize;
WB_END
WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
return (jint)os::vm_page_size();
WB_END
WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
return os::vm_allocation_granularity();
WB_END
WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
return os::large_page_size();
WB_END
class WBIsKlassAliveClosure : public LockedClassesDo {
Symbol* _name;
int _count;
public:
WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
void do_klass(Klass* k) {
Symbol* ksym = k->name();
if (ksym->fast_compare(_name) == 0) {
_count++;
} else if (k->is_instance_klass()) {
// Need special handling for hidden classes because the JVM
// appends "+<hex-address>" to hidden class names.
InstanceKlass *ik = InstanceKlass::cast(k);
if (ik->is_hidden()) {
ResourceMark rm;
char* k_name = ksym->as_C_string();
// Find the first '+' char and truncate the string at that point.
// NOTE: This will not work correctly if the original hidden class
// name contains a '+'.
char* plus_char = strchr(k_name, '+');
if (plus_char != nullptr) {
*plus_char = 0;
char* c_name = _name->as_C_string();
if (strcmp(c_name, k_name) == 0) {
_count++;
}
}
}
}
}
int count() const {
return _count;
}
};
WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
oop h_name = JNIHandles::resolve(name);
if (h_name == nullptr) {
return 0;
}
Symbol* sym = java_lang_String::as_symbol(h_name);
TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
WBIsKlassAliveClosure closure(sym);
ClassLoaderDataGraph::classes_do(&closure);
// Return the count of alive classes with this name.
return closure.count();
WB_END
WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
oop h_name = JNIHandles::resolve(name);
if (h_name == nullptr) {
return 0;
}
Symbol* sym = java_lang_String::as_symbol(h_name);
TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
return (jint)sym->refcount();
WB_END
WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
#if INCLUDE_JVMTI
ResourceMark rm;
const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
assert(err == JVMTI_ERROR_NONE, "must not fail");
#endif
}
WB_END
WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
#if INCLUDE_JVMTI
ResourceMark rm;
const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
assert(err == JVMTI_ERROR_NONE, "must not fail");
#endif
}
WB_END
WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
return (jlong)Arguments::max_heap_for_compressed_oops();
}
WB_END
WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
"Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
MinHeapSize,
InitialHeapSize,
MaxHeapSize,
SpaceAlignment,
HeapAlignment);
}
WB_END
WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
size_t granularity = os::vm_allocation_granularity();
ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
VirtualSpace vs;
vs.initialize(rhs, 50 * granularity);
// Check if constraints are complied
if (!( UseCompressedOops && rhs.base() != nullptr &&
CompressedOops::base() != nullptr &&
CompressedOops::use_implicit_null_checks() )) {
tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
"\tUseCompressedOops is %d\n"
"\trhs.base() is " PTR_FORMAT "\n"
"\tCompressedOops::base() is " PTR_FORMAT "\n"
"\tCompressedOops::use_implicit_null_checks() is %d",
UseCompressedOops,
p2i(rhs.base()),
p2i(CompressedOops::base()),
CompressedOops::use_implicit_null_checks());
return;
}
tty->print_cr("Reading from no access area... ");
tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
WB_END
static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
size_t magnitude, size_t iterations) {
size_t granularity = os::vm_allocation_granularity();
ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
VirtualSpace vs;
if (!vs.initialize(rhs, 0)) {
tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
return 3;
}
int seed = os::random();
tty->print_cr("Random seed is %d", seed);
for (size_t i = 0; i < iterations; i++) {
// Whether we will shrink or grow
bool shrink = os::random() % 2L == 0;
// Get random delta to resize virtual space
size_t delta = (size_t)os::random() % magnitude;
// If we are about to shrink virtual space below zero, then expand instead
if (shrink && vs.committed_size() < delta) {
shrink = false;
}
// Resizing by delta
if (shrink) {
vs.shrink_by(delta);
} else {
// If expanding fails expand_by will silently return false
vs.expand_by(delta, true);
}
}
return 0;
}
WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
jlong reserved_space_size, jlong magnitude, jlong iterations))
tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
"iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
iterations);
if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
return 1;
}
// sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
// always 8 byte. That's why we should avoid overflow in case of 32bit platform.
if (sizeof(size_t) < sizeof(jlong)) {
jlong size_t_max_value = (jlong)SIZE_MAX;
if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
|| iterations > size_t_max_value) {
tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
return 2;
}
}
return wb_stress_virtual_space_resize((size_t) reserved_space_size,
(size_t) magnitude, (size_t) iterations);
WB_END
WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
return GCConfig::is_gc_supported((CollectedHeap::Name)name);
WB_END
WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
#if INCLUDE_JVMCI
if (EnableJVMCI) {
// Enter the JVMCI env that will be used by the CompileBroker.
JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
}
#endif
return false;
WB_END
WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
return GCConfig::is_gc_selected((CollectedHeap::Name)name);
WB_END
WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
return GCConfig::is_gc_selected_ergonomically();
WB_END
WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
oop p = JNIHandles::resolve(obj);
#if INCLUDE_G1GC
if (UseG1GC) {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
const HeapRegion* hr = g1h->heap_region_containing(p);
return !(hr->is_young());
}
#endif
#if INCLUDE_PARALLELGC
if (UseParallelGC) {
ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
return !psh->is_in_young(p);
}
#endif
#if INCLUDE_ZGC
if (UseZGC) {
if (ZGenerational) {
return ZHeap::heap()->is_old(to_zaddress(p));
} else {
return Universe::heap()->is_in(p);
}
}
#endif
#if INCLUDE_SHENANDOAHGC
if (UseShenandoahGC) {
return Universe::heap()->is_in(p);
}
#endif
GenCollectedHeap* gch = GenCollectedHeap::heap();
return !gch->is_in_young(p);
WB_END
WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
oop p = JNIHandles::resolve(obj);
return p->size() * HeapWordSize;
WB_END
WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
return (jlong)SpaceAlignment;
WB_END
WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
return (jlong)HeapAlignment;
WB_END
WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
return Universe::heap()->supports_concurrent_gc_breakpoints();
WB_END
WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
ConcurrentGCBreakpoints::acquire_control();
WB_END
WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
ConcurrentGCBreakpoints::release_control();
WB_END
WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
ConcurrentGCBreakpoints::run_to_idle();
WB_END
WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
Handle h_name(THREAD, JNIHandles::resolve(at));
ResourceMark rm;
const char* c_name = java_lang_String::as_utf8_string(h_name());
return ConcurrentGCBreakpoints::run_to(c_name);
WB_END
#if INCLUDE_G1GC
WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
if (UseG1GC) {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
oop result = JNIHandles::resolve(obj);
const HeapRegion* hr = g1h->heap_region_containing(result);
return hr->is_humongous();
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
WB_END
WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
if (UseG1GC) {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
return hr->is_humongous();
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
WB_END
WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
if (UseG1GC) {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
return hr->is_free();
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
WB_END
WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
if (UseG1GC) {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
size_t nr = g1h->max_regions();
return (jlong)nr;
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
WB_END
WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
if (UseG1GC) {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
size_t nr = g1h->num_free_regions();
return (jlong)nr;
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
WB_END
WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
if (UseG1GC) {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
return g1h->concurrent_mark()->cm_thread()->in_progress();
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
WB_END
WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
if (UseG1GC) {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
G1ConcurrentMark* cm = g1h->concurrent_mark();
return cm->completed_mark_cycles();
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
WB_END
WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
if (UseG1GC) {
return (jint)HeapRegion::GrainBytes;
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
WB_END
WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
if (UseG1GC) {
return G1CollectedHeap::heap()->has_uncommittable_regions();
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
WB_END
#endif // INCLUDE_G1GC
#if INCLUDE_PARALLELGC
WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
if (UseParallelGC) {
return GenAlignment;
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
WB_END
WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
if (UseParallelGC) {
return GenAlignment;
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
WB_END
#endif // INCLUDE_PARALLELGC
#if INCLUDE_G1GC
WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
if (UseG1GC) {
ResourceMark rm(THREAD);
G1CollectedHeap* g1h = G1CollectedHeap::heap();
MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
return JNIHandles::make_local(THREAD, h());
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
WB_END
WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
if (UseG1GC) {
G1NUMA* numa = G1NUMA::numa();
return (jint)numa->num_active_nodes();
}
THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
WB_END
WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
if (UseG1GC) {
G1NUMA* numa = G1NUMA::numa();
int num_node_ids = (int)numa->num_active_nodes();
const int* node_ids = numa->node_ids();
typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
for (int i = 0; i < num_node_ids; i++) {
result->int_at_put(i, (jint)node_ids[i]);
}
return (jintArray) JNIHandles::make_local(THREAD, result);
}
THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
WB_END
class OldRegionsLivenessClosure: public HeapRegionClosure {
private:
const int _liveness;
size_t _total_count;
size_t _total_memory;
size_t _total_memory_to_free;
public:
OldRegionsLivenessClosure(int liveness) :
_liveness(liveness),
_total_count(0),
_total_memory(0),
_total_memory_to_free(0) { }
size_t total_count() { return _total_count; }
size_t total_memory() { return _total_memory; }
size_t total_memory_to_free() { return _total_memory_to_free; }
bool do_heap_region(HeapRegion* r) {
if (r->is_old()) {
size_t live = r->live_bytes();
size_t size = r->used();
size_t reg_size = HeapRegion::GrainBytes;
if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
_total_memory += size;
++_total_count;
if (size == reg_size) {
// We don't include non-full regions since they are unlikely included in mixed gc
// for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
_total_memory_to_free += size - live;
}
}
}
return false;
}
};
WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
if (!UseG1GC) {
THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
}
if (liveness < 0) {
THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
}
G1CollectedHeap* g1h = G1CollectedHeap::heap();
OldRegionsLivenessClosure rli(liveness);
g1h->heap_region_iterate(&rli);
typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
result->long_at_put(0, rli.total_count());
result->long_at_put(1, rli.total_memory());
result->long_at_put(2, rli.total_memory_to_free());
return (jlongArray) JNIHandles::make_local(THREAD, result);
WB_END
#endif // INCLUDE_G1GC
// Alloc memory using the test memory type so that we can use that to see if
// NMT picks it up correctly
WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
jlong addr = 0;
addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
return addr;
WB_END
// Alloc memory with pseudo call stack. The test can create pseudo malloc
// allocation site to stress the malloc tracking.
WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
address pc = (address)(size_t)pseudo_stack;
NativeCallStack stack(&pc, 1);
return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
WB_END
// Alloc memory with pseudo call stack and specific memory type.
WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
address pc = (address)(size_t)pseudo_stack;
NativeCallStack stack(&pc, 1);
return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
WB_END
// Free the memory allocated by NMTAllocTest
WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
os::free((void*)(uintptr_t)mem);
WB_END
WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
jlong addr = 0;
addr = (jlong)(uintptr_t)os::reserve_memory(size);
MemTracker::record_virtual_memory_type((address)addr, mtTest);
return addr;
WB_END
WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
MemTracker::record_virtual_memory_type((address)addr, mtTest);
return addr;
WB_END
WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
WB_END
WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
os::uncommit_memory((char *)(uintptr_t)addr, size);
WB_END
WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
os::release_memory((char *)(uintptr_t)addr, size);
WB_END
WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
int hash_size = MallocSiteTable::hash_buckets();
assert(hash_size > 0, "NMT hash_size should be > 0");
return (jint)hash_size;
WB_END
WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
return (jlong)arena;
WB_END
WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
Arena* a = (Arena*)arena;
delete a;
WB_END
WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
Arena* a = (Arena*)arena;
a->Amalloc(size_t(size));
WB_END
static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
assert(method != nullptr, "method should not be null");
ThreadToNativeFromVM ttn(thread);
return env->FromReflectedMethod(method);
}
// Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
private:
int _result;
const bool _make_not_entrant;
public:
VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
_result(0), _make_not_entrant(make_not_entrant) { }
int result() const { return _result; }
void doit() {
for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
if (t->has_last_Java_frame()) {
for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
frame* f = fst.current();
if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
Deoptimization::deoptimize(t, *f);
if (_make_not_entrant) {
CompiledMethod* cm = CodeCache::find_compiled(f->pc());
assert(cm != nullptr, "sanity check");
cm->make_not_entrant();
}
++_result;
}
}
}
}
}
};
WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
VMThread::execute(&op);
return op.result();
WB_END
WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
bool result = false;
if (thread->has_last_Java_frame()) {
RegisterMap reg_map(thread,
RegisterMap::UpdateMap::include,
RegisterMap::ProcessFrames::include,
RegisterMap::WalkContinuation::skip);
javaVFrame *jvf = thread->last_java_vframe(&reg_map);
for (jint d = 0; d < depth && jvf != nullptr; d++) {
jvf = jvf->java_sender();
}
result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
}
return result;
WB_END
WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
DeoptimizationScope deopt_scope;
CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
deopt_scope.deoptimize_marked();
WB_END
WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
int result = 0;
CHECK_JNI_EXCEPTION_(env, result);
DeoptimizationScope deopt_scope;
{
MutexLocker mu(Compile_lock);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
if (is_osr) {
result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
} else {
MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
if (mh->code() != nullptr) {
deopt_scope.mark(mh->code());
++result;
}
}
CodeCache::mark_for_deoptimization(&deopt_scope, mh());
}
deopt_scope.deoptimize_marked();
return result;
WB_END
WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
MutexLocker mu(Compile_lock);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
if (code == nullptr) {
return JNI_FALSE;
}
return !code->is_marked_for_deoptimization();
WB_END
static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
if (comp == nullptr) {
return true;
}
DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
bool exclude = directive->ExcludeOption;
DirectivesStack::release(directive);
return exclude;
}
static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
if (is_osr) {
return CompilationPolicy::can_be_osr_compiled(mh, level);
} else {
return CompilationPolicy::can_be_compiled(mh, level);
}
}
WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
return false;
}
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
MutexLocker mu(Compile_lock);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
// The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
// a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
// to exclude a compilation of 'method'.
if (comp_level == CompLevel_any) {
// Both compilers could have ExcludeOption set. Check all combinations.
bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
if (excluded_c1 && excluded_c2) {
// Compilation of 'method' excluded by both compilers.
return false;
}
if (excluded_c1) {
// C1 only has ExcludeOption set: Check if compilable with C2.
return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
} else if (excluded_c2) {
// C2 only has ExcludeOption set: Check if compilable with C1.
return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
}
} else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
// Compilation of 'method' excluded by compiler used for 'comp_level'.
return false;
}
return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
WB_END
WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
MutexLocker mu(Compile_lock);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
return mh->queued_for_compilation();
WB_END
WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
return false; // Intrinsic is not available on a non-existent compilation level.
}
jmethodID method_id, compilation_context_id;
method_id = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
DirectiveSet* directive;
AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
assert(comp != nullptr, "compiler not available");
if (compilation_context != nullptr) {
compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
directive = DirectivesStack::getMatchingDirective(cch, comp);
} else {
// Calling with null matches default directive
directive = DirectivesStack::getDefaultDirective(comp);
}
bool result = comp->is_intrinsic_available(mh, directive);
DirectivesStack::release(directive);
return result;
WB_END
WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, CompLevel_none);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
return (code != nullptr ? code->comp_level() : CompLevel_none);
WB_END
WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION(env);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
if (is_osr) {
mh->set_not_osr_compilable("WhiteBox", comp_level);
} else {
mh->set_not_compilable("WhiteBox", comp_level);
}
WB_END
WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, 0);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
uint cnt = 0;
MethodData* mdo = mh->method_data();
if (mdo != nullptr) {
cnt = mdo->decompile_count();
}
return cnt;
WB_END
// Get the trap count of a method for a specific reason. If the trap count for
// that reason did overflow, this includes the overflow trap count of the method.
// If 'reason' is null, the sum of the traps for all reasons will be returned.
// This number includes the overflow trap count if the trap count for any reason
// did overflow.
WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, 0);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
uint cnt = 0;
MethodData* mdo = mh->method_data();
if (mdo != nullptr) {
ResourceMark rm(THREAD);
char* reason_str = (reason_obj == nullptr) ?
nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
bool overflow = false;
for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
cnt = mdo->trap_count(reason);
// Count in the overflow trap count on overflow
if (cnt == (uint)-1) {
cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
}
break;
} else if (reason_str == nullptr) {
uint c = mdo->trap_count(reason);
if (c == (uint)-1) {
c = mdo->trap_count_limit();
if (!overflow) {
// Count overflow trap count just once
overflow = true;
c += mdo->overflow_trap_count();
}
}
cnt += c;
}
}
}
return cnt;
WB_END
WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
if (reason_obj == nullptr && action_obj == nullptr) {
return Deoptimization::total_deoptimization_count();
}
ResourceMark rm(THREAD);
const char *reason_str = (reason_obj == nullptr) ?
nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
const char *action_str = (action_obj == nullptr) ?
nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
return Deoptimization::deoptimization_count(reason_str, action_str);
WB_END
WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
WB_END
WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
bool result = mh->dont_inline();
mh->set_dont_inline(value == JNI_TRUE);
return result;
WB_END
WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
if (comp_level == CompLevel_any) {
return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
} else {
return CompileBroker::queue_size(comp_level);
}
WB_END
WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
bool result = mh->force_inline();
mh->set_force_inline(value == JNI_TRUE);
return result;
WB_END
#ifdef LINUX
bool WhiteBox::validate_cgroup(const char* proc_cgroups,
const char* proc_self_cgroup,
const char* proc_self_mountinfo,
u1* cg_flags) {
CgroupInfo cg_infos[CG_INFO_LENGTH];
return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
proc_self_cgroup,
proc_self_mountinfo, cg_flags);
}
#endif
bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
// Screen for unavailable/bad comp level or null method
AbstractCompiler* comp = CompileBroker::compiler(comp_level);
if (method == nullptr) {
tty->print_cr("WB error: request to compile null method");
return false;
}
if (comp_level > CompilationPolicy::highest_compile_level()) {
tty->print_cr("WB error: invalid compilation level %d", comp_level);
return false;
}
if (comp == nullptr) {
tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
return false;
}
// Check if compilation is blocking
methodHandle mh(THREAD, method);
DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
bool is_blocking = !directive->BackgroundCompilationOption;
DirectivesStack::release(directive);
// Compile method and check result
nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
MutexLocker mu(THREAD, Compile_lock);
bool is_queued = mh->queued_for_compilation();
if ((!is_blocking && is_queued) || nm != nullptr) {
return true;
}
// Check code again because compilation may be finished before Compile_lock is acquired.
if (bci == InvocationEntryBci) {
CompiledMethod* code = mh->code();
if (code != nullptr && code->as_nmethod_or_null() != nullptr) {
return true;
}
} else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
return true;
}
tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
mh->print_short_name(tty);
tty->cr();
if (is_blocking && is_queued) {
tty->print_cr("WB error: blocking compilation is still in queue!");
}
return false;
}
WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
WB_END
WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
Method* clinit = ik->class_initializer();
if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
return false;
}
return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
WB_END
WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
bool result = directive->PrintAssemblyOption;
DirectivesStack::release(directive);
return result;
WB_END
WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
ResourceMark rm(THREAD);
const char* error_msg = nullptr;
char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
if (m == nullptr) {
assert(error_msg != nullptr, "Always have an error message");
tty->print_cr("Got error: %s", error_msg);
return -1; // Pattern failed
}
// Pattern works - now check if it matches
int result;
if (m->match(mh, InlineMatcher::force_inline)) {
result = 2; // Force inline match
} else if (m->match(mh, InlineMatcher::dont_inline)) {
result = 1; // Dont inline match
} else {
result = 0; // No match
}
delete m;
return result;
WB_END
WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
ResourceMark rm;
char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
const char* error_msg = nullptr;
BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
if (m == nullptr) {
assert(error_msg != nullptr, "Must have error_msg");
tty->print_cr("Got error: %s", error_msg);
return -1;
}
// Pattern works - now check if it matches
int result = m->matches(mh);
delete m;
assert(result == 0 || result == 1, "Result out of range");
return result;
WB_END
WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION(env);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
MethodData* mdo = mh->method_data();
if (mdo == nullptr) {
Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
mdo = mh->method_data();
}
mdo->init();
InvocationCounter* icnt = mdo->invocation_counter();
InvocationCounter* bcnt = mdo->backedge_counter();
// set i-counter according to CompilationPolicy::is_method_profiled
icnt->set(Tier4MinInvocationThreshold);
bcnt->set(Tier4CompileThreshold);
WB_END
WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION(env);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
MutexLocker mu(THREAD, Compile_lock);
MethodData* mdo = mh->method_data();
MethodCounters* mcs = mh->method_counters();
if (mdo != nullptr) {
mdo->init();
ResourceMark rm(THREAD);
int arg_count = mdo->method()->size_of_parameters();
for (int i = 0; i < arg_count; i++) {
mdo->set_arg_modified(i, 0);
}
MutexLocker mu(THREAD, mdo->extra_data_lock());
mdo->clean_method_data(/*always_clean*/true);
}
mh->clear_is_not_c1_compilable();
mh->clear_is_not_c2_compilable();
mh->clear_is_not_c2_osr_compilable();
NOT_PRODUCT(mh->set_compiled_invocation_count(0));
if (mcs != nullptr) {
mcs->clear_counters();
}
WB_END
template <typename T, int type_enum>
static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
if (name == nullptr) {
return false;
}
ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
const char* flag_name = env->GetStringUTFChars(name, nullptr);
CHECK_JNI_EXCEPTION_(env, false);
const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
env->ReleaseStringUTFChars(name, flag_name);
return (result == JVMFlag::SUCCESS);
}
template <typename T, int type_enum>
static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
if (name == nullptr) {
return false;
}
ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
const char* flag_name = env->GetStringUTFChars(name, nullptr);
CHECK_JNI_EXCEPTION_(env, false);
JVMFlag* flag = JVMFlag::find_flag(flag_name);
JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
env->ReleaseStringUTFChars(name, flag_name);
return (result == JVMFlag::SUCCESS);
}
template <typename T>
static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
ResourceMark rm(thread);
jclass clazz = env->FindClass(name->as_C_string());
CHECK_JNI_EXCEPTION_(env, nullptr);
jmethodID methodID = env->GetStaticMethodID(clazz,
vmSymbols::valueOf_name()->as_C_string(),
sig->as_C_string());
CHECK_JNI_EXCEPTION_(env, nullptr);
jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
CHECK_JNI_EXCEPTION_(env, nullptr);
return result;
}
static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
}
static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
}
static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
}
/* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
}*/
static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
}
static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
const char* flag_name = env->GetStringUTFChars(name, nullptr);
CHECK_JNI_EXCEPTION_(env, nullptr);
const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
env->ReleaseStringUTFChars(name, flag_name);
return result;
}
WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
const JVMFlag* flag = getVMFlag(thread, env, name);
return (flag != nullptr) && flag->is_constant_in_binary();
WB_END
WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
const JVMFlag* flag = getVMFlag(thread, env, name);
return (flag != nullptr) && flag->is_default();
WB_END
WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
const JVMFlag* flag = getVMFlag(thread, env, name);
return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
WB_END
WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
bool result;
if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
return booleanBox(thread, env, result);
}
return nullptr;
WB_END
template <typename T, int type_enum>
jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
T result;
if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
return longBox(thread, env, result);
}
return nullptr;
}
WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
WB_END
WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
WB_END
WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
WB_END
WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
WB_END
WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
WB_END
WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
WB_END
WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
double result;
if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
return doubleBox(thread, env, result);
}
return nullptr;
WB_END
WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
ccstr ccstrResult;
if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
jstring result = env->NewStringUTF(ccstrResult);
CHECK_JNI_EXCEPTION_(env, nullptr);
return result;
}
return nullptr;
WB_END
WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
bool result = value == JNI_TRUE ? true : false;
SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
WB_END
WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
int result = value;
SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
WB_END
WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
uint result = value;
SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
WB_END
WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
intx result = value;
SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
WB_END
WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
uintx result = value;
SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
WB_END
WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
uint64_t result = value;
SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
WB_END
WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
size_t result = value;
SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
WB_END
WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
double result = value;
SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
WB_END
WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
const char* ccstrValue;
if (value == nullptr) {
ccstrValue = nullptr;
}
else {
ccstrValue = env->GetStringUTFChars(value, nullptr);
CHECK_JNI_EXCEPTION(env);
}
{
ccstr param = ccstrValue;
ThreadInVMfromNative ttvfn(thread); // back to VM
if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &param)) {
assert(param == nullptr, "old value is freed automatically and not returned");
}
}
if (value != nullptr) {
env->ReleaseStringUTFChars(value, ccstrValue);
}
WB_END
WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
WhiteBox::compilation_locked = true;
WB_END
WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
WhiteBox::compilation_locked = false;
mo.notify_all();
WB_END
WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
ResourceMark rm(THREAD);
int len;
jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
return (StringTable::lookup(name, len) != nullptr);
WB_END
WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
Universe::heap()->collect(GCCause::_wb_full_gc);
#if INCLUDE_G1GC
if (UseG1GC) {
// Needs to be cleared explicitly for G1
Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
}
#endif // INCLUDE_G1GC
WB_END
WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
Universe::heap()->collect(GCCause::_wb_young_gc);
WB_END
WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
// static+volatile in order to force the read to happen
// (not be eliminated by the compiler)
static char c;
static volatile char* p;
p = os::reserve_memory(os::vm_allocation_granularity());
if (p == nullptr) {
THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
}
c = *p;
WB_END
WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
const char* features = VM_Version::features_string();
ThreadToNativeFromVM ttn(thread);
jstring features_string = env->NewStringUTF(features);
CHECK_JNI_EXCEPTION_(env, nullptr);
return features_string;
WB_END
CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
return CodeCache::get_code_heap(code)->code_blob_type();
}
CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
return CodeCache::get_code_heap(blob_type);
}
struct CodeBlobStub {
CodeBlobStub(const CodeBlob* blob) :
name(os::strdup(blob->name())),
size(blob->size()),
blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
address((jlong) blob) { }
~CodeBlobStub() { os::free((void*) name); }
const char* const name;
const jint size;
const jint blob_type;
const jlong address;
};
static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
ResourceMark rm;
jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
CHECK_JNI_EXCEPTION_(env, nullptr);
jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
jstring name = env->NewStringUTF(cb->name);
CHECK_JNI_EXCEPTION_(env, nullptr);
env->SetObjectArrayElement(result, 0, name);
jobject obj = integerBox(thread, env, cb->size);
CHECK_JNI_EXCEPTION_(env, nullptr);
env->SetObjectArrayElement(result, 1, obj);
obj = integerBox(thread, env, cb->blob_type);
CHECK_JNI_EXCEPTION_(env, nullptr);
env->SetObjectArrayElement(result, 2, obj);
obj = longBox(thread, env, cb->address);
CHECK_JNI_EXCEPTION_(env, nullptr);
env->SetObjectArrayElement(result, 3, obj);
return result;
}
WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
ResourceMark rm(THREAD);
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, nullptr);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
jobjectArray result = nullptr;
if (code == nullptr) {
return result;
}
int comp_level = code->comp_level();
int insts_size = code->insts_size();
ThreadToNativeFromVM ttn(thread);
jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
CHECK_JNI_EXCEPTION_(env, nullptr);
result = env->NewObjectArray(5, clazz, nullptr);
if (result == nullptr) {
return result;
}
CodeBlobStub stub(code);
jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
CHECK_JNI_EXCEPTION_(env, nullptr);
env->SetObjectArrayElement(result, 0, codeBlob);
jobject level = integerBox(thread, env, comp_level);
CHECK_JNI_EXCEPTION_(env, nullptr);
env->SetObjectArrayElement(result, 1, level);
jbyteArray insts = env->NewByteArray(insts_size);
CHECK_JNI_EXCEPTION_(env, nullptr);
env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
env->SetObjectArrayElement(result, 2, insts);
jobject id = integerBox(thread, env, code->compile_id());
CHECK_JNI_EXCEPTION_(env, nullptr);
env->SetObjectArrayElement(result, 3, id);
jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
CHECK_JNI_EXCEPTION_(env, nullptr);
env->SetObjectArrayElement(result, 4, entry_point);
return result;
WB_END
CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
BufferBlob* blob;
int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
if (full_size < size) {
full_size += align_up(size - full_size, oopSize);
}
{
MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
if (blob != nullptr) {
::new (blob) BufferBlob("WB::DummyBlob", full_size);
}
}
// Track memory usage statistic after releasing CodeCache_lock
MemoryService::track_code_cache_memory_usage();
return blob;
}
WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
if (size < 0) {
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
}
return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
WB_END
WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
if (addr == 0) {
return;
}
BufferBlob::free((BufferBlob*) addr);
WB_END
WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
ResourceMark rm;
GrowableArray<CodeBlobStub*> blobs;
{
MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
if (heap == nullptr) {
return nullptr;
}
for (CodeBlob* cb = (CodeBlob*) heap->first();
cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
new (stub) CodeBlobStub(cb);
blobs.append(stub);
}
}
ThreadToNativeFromVM ttn(thread);
jobjectArray result = nullptr;
jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
CHECK_JNI_EXCEPTION_(env, nullptr);
result = env->NewObjectArray(blobs.length(), clazz, nullptr);
CHECK_JNI_EXCEPTION_(env, nullptr);
if (result == nullptr) {
return result;
}
int i = 0;
for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
it != blobs.end(); ++it) {
jobjectArray obj = codeBlob2objectArray(thread, env, *it);
CHECK_JNI_EXCEPTION_(env, nullptr);
env->SetObjectArrayElement(result, i, obj);
CHECK_JNI_EXCEPTION_(env, nullptr);
++i;
}
return result;
WB_END
WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
return CompileBroker::get_compilation_activity_mode();
WB_END
WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
if (addr == 0) {
THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
"WB_GetCodeBlob: addr is null");
}
ThreadToNativeFromVM ttn(thread);
CodeBlobStub stub((CodeBlob*) addr);
return codeBlob2objectArray(thread, env, &stub);
WB_END
WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, 0);
methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
return (jlong) mh->method_data();
WB_END
WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
return (jlong) thread->stack_size();
WB_END
WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
return (jlong) thread->stack_overflow_state()->stack_available(
os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
WB_END
int WhiteBox::array_bytes_to_length(size_t bytes) {
return Array<u1>::bytes_to_length(bytes);
}
///////////////
// MetaspaceTestContext and MetaspaceTestArena
WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
metaspace::MetaspaceTestContext* context =
new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
return (jlong)p2i(context);
WB_END
WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
delete (metaspace::MetaspaceTestContext*) context;
WB_END
WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
context0->purge_area();
WB_END
WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
context0->print_on(tty);
WB_END
WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
return context0->committed_words();
WB_END
WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
return context0->used_words();
WB_END
WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
return (jlong)p2i(context0->create_arena(type));
WB_END
WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
delete (metaspace::MetaspaceTestArena*) arena;
WB_END
WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
MetaWord* p = arena0->allocate((size_t) word_size);
return (jlong)p2i(p);
WB_END
WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
arena0->deallocate((MetaWord*)p, (size_t) word_size);
WB_END
WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
WB_END
//////////////
WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
if (size < 0) {
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
}
oop class_loader_oop = JNIHandles::resolve(class_loader);
ClassLoaderData* cld = class_loader_oop != nullptr
? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
: ClassLoaderData::the_null_class_loader_data();
void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
return (jlong)(uintptr_t)metadata;
WB_END
WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
jstring version, jstring location, jobjectArray packages))
Handle h_module (THREAD, JNIHandles::resolve(module));
Modules::define_module(h_module, is_open, version, location, packages, CHECK);
WB_END
WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
WB_END
WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
Handle h_module (THREAD, JNIHandles::resolve(module));
Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
WB_END
WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
Handle h_module (THREAD, JNIHandles::resolve(module));
Modules::add_module_exports(h_module, package, Handle(), CHECK);
WB_END
WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
Modules::add_reads_module(h_from_module, h_source_module, CHECK);
WB_END
WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
if (inc < 0) {
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
}
jlong max_size_t = (jlong) ((size_t) -1);
if (inc > max_size_t) {
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
}
size_t new_cap_until_GC = 0;
size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
if (!success) {
THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
"WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
"due to contention with another thread");
}
return (jlong) new_cap_until_GC;
WB_END
WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
return (jlong) MetaspaceGC::capacity_until_GC();
WB_END
// The function is only valid when CDS is available.
WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
#if INCLUDE_CDS
return (jlong)MetaspaceShared::core_region_alignment();
#else
ShouldNotReachHere();
return 0L;
#endif
WB_END
WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
oop obj_oop = JNIHandles::resolve(obj);
return (jboolean) obj_oop->mark().has_monitor();
WB_END
WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
WB_END
WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
VM_ForceSafepoint force_safepoint_op;
VMThread::execute(&force_safepoint_op);
WB_END
WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
nullStream dev_null;
ClassLoaderStatsVMOperation force_op(&dev_null);
VMThread::execute(&force_op);
WB_END
WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
return (jlong) ik->constants();
WB_END
WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
return ConstantPool::CPCACHE_INDEX_TAG;
WB_END
WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
ConstantPool* cp = ik->constants();
if (cp->cache() == nullptr) {
return -1;
}
return cp->cache()->length();
WB_END
WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
objArrayOop resolved_refs= ik->constants()->resolved_references();
return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
WB_END
WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
ConstantPool* cp = ik->constants();
if (cp->cache() == nullptr) {
THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
}
jint cpci = index;
jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
}
jint cpi = cp->remap_instruction_operand_from_cache(cpci);
return cpi;
WB_END
WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
return ConstantPool::encode_invokedynamic_index(index);
WB_END
WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
ConstantPool* cp = ik->constants();
if (cp->cache() == nullptr) {
return -1;
}
return cp->resolved_indy_entries_length();
WB_END
WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
ConstantPool* cp = ik->constants();
if (cp->cache() == nullptr) {
return -1;
}
return cp->resolved_indy_entry_at(index)->constant_pool_index();
WB_END
WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
VMThread::execute(&clear_ics);
WB_END
template <typename T>
static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
assert(value != nullptr, "sanity");
if (method == nullptr || name == nullptr) {
return false;
}
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, false);
methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
// can't be in VM when we call JNI
ThreadToNativeFromVM ttnfv(thread);
const char* flag_name = env->GetStringUTFChars(name, nullptr);
CHECK_JNI_EXCEPTION_(env, false);
enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
env->ReleaseStringUTFChars(name, flag_name);
if (option == CompileCommand::Unknown) {
return false;
}
if (!CompilerOracle::option_matches_type(option, *value)) {
return false;
}
return CompilerOracle::has_option_value(mh, option, *value);
}
WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
bool result;
if (GetMethodOption<bool> (thread, env, method, name, &result)) {
// can't be in VM when we call JNI
ThreadToNativeFromVM ttnfv(thread);
return booleanBox(thread, env, result);
}
return nullptr;
WB_END
WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
intx result;
if (GetMethodOption <intx> (thread, env, method, name, &result)) {
// can't be in VM when we call JNI
ThreadToNativeFromVM ttnfv(thread);
return longBox(thread, env, result);
}
return nullptr;
WB_END
WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
uintx result;
if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
// can't be in VM when we call JNI
ThreadToNativeFromVM ttnfv(thread);
return longBox(thread, env, result);
}
return nullptr;
WB_END
WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
double result;
if (GetMethodOption <double> (thread, env, method, name, &result)) {
// can't be in VM when we call JNI
ThreadToNativeFromVM ttnfv(thread);
return doubleBox(thread, env, result);
}
return nullptr;
WB_END
WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
ccstr ccstrResult;
if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
// can't be in VM when we call JNI
ThreadToNativeFromVM ttnfv(thread);
jstring result = env->NewStringUTF(ccstrResult);
CHECK_JNI_EXCEPTION_(env, nullptr);
return result;
}
return nullptr;
WB_END
WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
const char* p = Arguments::get_default_shared_archive_path();
ThreadToNativeFromVM ttn(thread);
jstring path_string = env->NewStringUTF(p);
CHECK_JNI_EXCEPTION_(env, nullptr);
return path_string;
WB_END
WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
return UseSharedSpaces;
WB_END
WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
#if INCLUDE_CDS
return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
#else
ShouldNotReachHere();
return (jint)-1;
#endif
WB_END
WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
#if INCLUDE_CDS
return (jint)CURRENT_CDS_ARCHIVE_VERSION;
#else
ShouldNotReachHere();
return (jint)-1;
#endif
WB_END
WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
return FileMapInfo::memory_mapping_failed();
WB_END
WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
ResourceMark rm(THREAD);
oop str_oop = JNIHandles::resolve(str);
int length;
jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
return StringTable::lookup_shared(chars, length) == str_oop;
WB_END
WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
WB_END
WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
return ArchiveHeapLoader::is_mapped();
WB_END
WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
if (!k->is_instance_klass()) {
return;
}
InstanceKlass *ik = InstanceKlass::cast(k);
ik->link_class(THREAD); // may throw verification error
WB_END
WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
return ArchiveHeapLoader::is_mapped();
WB_END
WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
#if INCLUDE_CDS
return true;
#else
return false;
#endif // INCLUDE_CDS
WB_END
WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
#if COMPILER2_OR_JVMCI
return true;
#else
return false;
#endif
WB_END
WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
#if INCLUDE_JVMCI
return JVMCIGlobals::gc_supports_jvmci();
#else
return false;
#endif
WB_END
WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
return HeapShared::can_write();
WB_END
WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
#if INCLUDE_JFR
return true;
#else
return false;
#endif // INCLUDE_JFR
WB_END
WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
#if defined(DTRACE_ENABLED)
return true;
#else
return false;
#endif // DTRACE_ENABLED
WB_END
#if INCLUDE_CDS
WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
ResourceMark rm;
char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
jint result = (jint)CDSConstants::get_cds_offset(c_name);
return result;
WB_END
WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
ResourceMark rm;
char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
jint result = (jint)CDSConstants::get_cds_constant(c_name);
return result;
WB_END
#endif // INCLUDE_CDS
WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
class ReadMonitorsClosure : public HandshakeClosure {
jboolean _executed;
void do_thread(Thread* th) {
JavaThread* jt = JavaThread::cast(th);
ResourceMark rm;
GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
if (!jt->has_last_Java_frame()) {
return;
}
RegisterMap rmap(jt,
RegisterMap::UpdateMap::include,
RegisterMap::ProcessFrames::include,
RegisterMap::WalkContinuation::skip);
for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
GrowableArray<MonitorInfo*> *monitors = vf->monitors();
if (monitors != nullptr) {
int len = monitors->length();
// Walk monitors youngest to oldest
for (int i = len - 1; i >= 0; i--) {
MonitorInfo* mon_info = monitors->at(i);
if (mon_info->eliminated()) continue;
oop owner = mon_info->owner();
if (owner != nullptr) {
info->append(mon_info);
}
}
}
}
_executed = true;
}
public:
ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
jboolean executed() const { return _executed; }
};
ReadMonitorsClosure rmc;
if (thread_handle != nullptr) {
ThreadsListHandle tlh;
JavaThread* target = nullptr;
bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
if (is_alive) {
Handshake::execute(&rmc, &tlh, target);
}
}
return rmc.executed();
WB_END
WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
class TraceSelfClosure : public HandshakeClosure {
jint _num_threads_completed;
void do_thread(Thread* th) {
JavaThread* jt = JavaThread::cast(th);
ResourceMark rm;
jt->print_on(tty);
jt->print_stack_on(tty);
tty->cr();
Atomic::inc(&_num_threads_completed);
}
public:
TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
jint num_threads_completed() const { return _num_threads_completed; }
};
TraceSelfClosure tsc(Thread::current());
if (all_threads) {
Handshake::execute(&tsc);
} else if (thread_handle != nullptr) {
ThreadsListHandle tlh;
JavaThread* target = nullptr;
bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
if (is_alive) {
Handshake::execute(&tsc, &tlh, target);
}
}
return tsc.num_threads_completed();
WB_END
WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
class TraceSelfClosure : public AsyncHandshakeClosure {
JavaThread* _self;
void do_thread(Thread* th) {
assert(th->is_Java_thread(), "sanity");
// AsynchHandshake handshakes are only executed by target.
assert(_self == th, "Must be");
assert(Thread::current() == th, "Must be");
JavaThread* jt = JavaThread::cast(th);
ResourceMark rm;
jt->print_on(tty);
jt->print_stack_on(tty);
tty->cr();
}
public:
TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
};
if (thread_handle != nullptr) {
ThreadsListHandle tlh;
JavaThread* target = nullptr;
bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
if (is_alive) {
TraceSelfClosure* tsc = new TraceSelfClosure(target);
Handshake::execute(tsc, target);
}
}
WB_END
static volatile int _emulated_lock = 0;
WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
JavaThread* self = JavaThread::current();
{
// Before trying to acquire the lock transition into a safepoint safe state.
// Otherwise if either suspender or suspendee blocks for a safepoint
// in ~ThreadBlockInVM the other one could loop forever trying to acquire
// the lock without allowing the safepoint to progress.
ThreadBlockInVM tbivm(self);
// We will deadlock here if we are 'suspender' and 'suspendee'
// suspended in ~ThreadBlockInVM. This verifies we only suspend
// at the right place.
while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
assert(_emulated_lock == 1, "Must be locked");
// Sleep much longer in suspendee to force situation where
// 'suspender' is waiting above to acquire lock.
os::naked_short_sleep(suspender ? 1 : 10);
}
Atomic::store(&_emulated_lock, 0);
WB_END
// Some convenience methods to deal with objects from java
int WhiteBox::offset_for_field(const char* field_name, oop object,
Symbol* signature_symbol) {
assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
//Get the class of our object
Klass* arg_klass = object->klass();
//Turn it into an instance-klass
InstanceKlass* ik = InstanceKlass::cast(arg_klass);
//Create symbols to look for in the class
TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
//To be filled in with an offset of the field we're looking for
fieldDescriptor fd;
Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
if (res == nullptr) {
tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
name_symbol->as_C_string());
vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
}
//fetch the field at the offset we've found
int dest_offset = fd.offset();
return dest_offset;
}
const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
int offset = offset_for_field(field_name, object,
vmSymbols::string_signature());
oop string = object->obj_field(offset);
if (string == nullptr) {
return nullptr;
}
const char* ret = java_lang_String::as_utf8_string(string);
return ret;
}
bool WhiteBox::lookup_bool(const char* field_name, oop object) {
int offset =
offset_for_field(field_name, object, vmSymbols::bool_signature());
bool ret = (object->bool_field(offset) == JNI_TRUE);
return ret;
}
void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
ResourceMark rm;
Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
const char* klass_name = klass->external_name();
ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
// one by one registration natives for exception catching
jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
CHECK_JNI_EXCEPTION(env);
for (int i = 0, n = method_count; i < n; ++i) {
// Skip dummy entries
if (method_array[i].fnPtr == nullptr) continue;
if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
jthrowable throwable_obj = env->ExceptionOccurred();
if (throwable_obj != nullptr) {
env->ExceptionClear();
if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
// NoSuchMethodError is thrown when a method can't be found or a method is not native.
// Ignoring the exception since it is not preventing use of other WhiteBox methods.
tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
klass_name, method_array[i].name, method_array[i].signature);
}
} else {
// Registration failed unexpectedly.
tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
klass_name, method_array[i].name, method_array[i].signature);
env->UnregisterNatives(wbclass);
break;
}
}
}
}
WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
// can't be in VM when we call JNI
ThreadToNativeFromVM ttnfv(thread);
const char* dir = env->GetStringUTFChars(compDirect, nullptr);
CHECK_JNI_EXCEPTION_(env, 0);
int ret;
{
ThreadInVMfromNative ttvfn(thread); // back to VM
ret = DirectivesParser::parse_string(dir, tty);
}
env->ReleaseStringUTFChars(compDirect, dir);
// -1 for error parsing directive. Return 0 as number of directives added.
if (ret == -1) {
ret = 0;
}
return (jint) ret;
WB_END
WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
DirectivesStack::pop(count);
WB_END
// Checks that the library libfile has the noexecstack bit set.
WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
jboolean ret = false;
#ifdef LINUX
// Can't be in VM when we call JNI.
ThreadToNativeFromVM ttnfv(thread);
const char* lf = env->GetStringUTFChars(libfile, nullptr);
CHECK_JNI_EXCEPTION_(env, 0);
ret = (jboolean) ElfFile::specifies_noexecstack(lf);
env->ReleaseStringUTFChars(libfile, lf);
#endif
return ret;
WB_END
WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
LINUX_ONLY(return OSContainer::is_containerized();)
return false;
WB_END
// Physical memory of the host machine (including containers)
WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
LINUX_ONLY(return os::Linux::physical_memory();)
return os::physical_memory();
WB_END
// Physical swap of the host machine (including containers), Linux only.
WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
LINUX_ONLY(return (jlong)os::Linux::host_swap();)
return -1; // Not used/implemented on other platforms
WB_END
WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
jobject o,
jstring proc_cgroups,
jstring proc_self_cgroup,
jstring proc_self_mountinfo))
jint ret = 0;
#ifdef LINUX
ThreadToNativeFromVM ttnfv(thread);
const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
CHECK_JNI_EXCEPTION_(env, 0);
const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
CHECK_JNI_EXCEPTION_(env, 0);
const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
CHECK_JNI_EXCEPTION_(env, 0);
u1 cg_type_flags = 0;
// This sets cg_type_flags
WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
ret = (jint)cg_type_flags;
env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
#endif
return ret;
WB_END
WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
os::print_os_info(tty);
WB_END
// Elf decoder
WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
#if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
ElfFile::_do_not_cache_elf_section = true;
#endif
WB_END
WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
return (jlong) ResolvedMethodTable::items_count();
WB_END
WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
return (jint) ProtectionDomainCacheTable::removed_entries_count();
WB_END
WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
// Return size in bytes.
return k->size() * wordSize;
WB_END
// See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
// It explains how the thread's priority field is used for test state coordination.
//
WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
oop target_oop = JNIHandles::resolve_non_null(target_handle);
jlong tid = java_lang_Thread::thread_id(target_oop);
JavaThread* target = java_lang_Thread::thread(target_oop);
// Grab a ThreadsListHandle to protect the target thread whilst terminating
ThreadsListHandle tlh;
// Look up the target thread by tid to ensure it is present
JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
if (t == nullptr) {
THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
}
tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
// Allow target to terminate by boosting priority
java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
// Now wait for the target to terminate
while (!target->is_terminated()) {
ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
os::naked_short_sleep(0);
}
tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
// Now release the GC inducing thread - we have to re-resolve the external oop that
// was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
oop original = JNIHandles::resolve_non_null(target_handle);
java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
// The Java code should be creating garbage and triggering GC, which would potentially move
// the threadObj oop. If the exiting thread is properly protected then its threadObj should
// remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
// kick in.
for (int i = 0; i < 5; i++) {
oop original = JNIHandles::resolve_non_null(target_handle);
oop current = t->threadObj();
if (original != current) {
tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
} else {
tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
ThreadBlockInVM tbivm(thread);
os::naked_short_sleep(50);
}
}
WB_END
WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
ResourceMark rm; // for verify
stringStream st;
for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
frame* current_frame = fst.current();
if (log) {
current_frame->print_value_on(&st, nullptr);
}
current_frame->verify(fst.register_map());
}
if (log) {
tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
tty->print_raw(st.freeze());
tty->print_cr("[WhiteBox::VerifyFrames] Done");
}
WB_END
WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
#if INCLUDE_JVMTI
return JNI_TRUE;
#else
return JNI_FALSE;
#endif
WB_END
WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
os::naked_short_sleep(time);
WB_END
WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
ThreadToNativeFromVM ttn(thread);
jstring info_string = env->NewStringUTF(XSTR(LIBC));
CHECK_JNI_EXCEPTION_(env, nullptr);
return info_string;
WB_END
WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
GCLocker::lock_critical(thread);
WB_END
WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
GCLocker::unlock_critical(thread);
WB_END
WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
if (!Continuations::enabled()) {
tty->print_cr("WB error: must be Continuations::enabled()!");
return JNI_FALSE;
}
jboolean result = false;
#if INCLUDE_JVMTI
if (enable) {
result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
} else {
result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
}
#endif
return result;
WB_END
WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
void* const from = (void*)addr;
void* const to = (void*)(addr + size);
if (from > to) {
os::pretouch_memory(from, to, os::vm_page_size());
}
WB_END
WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
WB_END
#define CC (char*)
static JNINativeMethod methods[] = {
{CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
{CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
{CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
{CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
{CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
{CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
{CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
{CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
{CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
{CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
{CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
{CC"parseCommandLine0",
CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
(void*) &WB_ParseCommandLine
},
{CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
(void*)&WB_AddToBootstrapClassLoaderSearch},
{CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
(void*)&WB_AddToSystemClassLoaderSearch},
{CC"getCompressedOopsMaxHeapSize", CC"()J",
(void*)&WB_GetCompressedOopsMaxHeapSize},
{CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
{CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
{CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
#if INCLUDE_CDS
{CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
{CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
#endif
#if INCLUDE_G1GC
{CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
{CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
{CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
{CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
{CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
{CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
{CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
{CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
{CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
{CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
(void*)&WB_G1AuxiliaryMemoryUsage },
{CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
{CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
{CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
#endif // INCLUDE_G1GC
#if INCLUDE_PARALLELGC
{CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
{CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
#endif
{CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
{CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
{CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
{CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
{CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
{CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
{CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
{CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
{CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
{CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
{CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
{CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
{CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
{CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
{CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
{CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
{CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
(void*)&WB_DeoptimizeMethod },
{CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
(void*)&WB_IsMethodCompiled },
{CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
(void*)&WB_IsMethodCompilable},
{CC"isMethodQueuedForCompilation0",
CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
{CC"isIntrinsicAvailable0",
CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
(void*)&WB_IsIntrinsicAvailable},
{CC"makeMethodNotCompilable0",
CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
{CC"testSetDontInlineMethod0",
CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
{CC"getMethodCompilationLevel0",
CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
{CC"getMethodDecompileCount0",
CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
{CC"getMethodTrapCount0",
CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
(void*)&WB_GetMethodTrapCount},
{CC"getDeoptCount0",
CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
{CC"getMethodEntryBci0",
CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
{CC"getCompileQueueSize",
CC"(I)I", (void*)&WB_GetCompileQueueSize},
{CC"testSetForceInlineMethod0",
CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
{CC"enqueueMethodForCompilation0",
CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
{CC"enqueueInitializerForCompilation0",
CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
{CC"markMethodProfiled",
CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
{CC"clearMethodState0",
CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
{CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
{CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
{CC"matchesMethod",
CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
(void*)&WB_MatchesMethod},
{CC"matchesInline",
CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
(void*)&WB_MatchesInline},
{CC"shouldPrintAssembly",
CC"(Ljava/lang/reflect/Executable;I)Z",
(void*)&WB_ShouldPrintAssembly},
{CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
{CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
{CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
{CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
{CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
{CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
{CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
{CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
{CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
{CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
{CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
{CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
(void*)&WB_SetStringVMFlag},
{CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
(void*)&WB_GetBooleanVMFlag},
{CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
(void*)&WB_GetIntVMFlag},
{CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
(void*)&WB_GetUintVMFlag},
{CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
(void*)&WB_GetIntxVMFlag},
{CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
(void*)&WB_GetUintxVMFlag},
{CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
(void*)&WB_GetUint64VMFlag},
{CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
(void*)&WB_GetSizeTVMFlag},
{CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
(void*)&WB_GetDoubleVMFlag},
{CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
(void*)&WB_GetStringVMFlag},
{CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
{CC"fullGC", CC"()V", (void*)&WB_FullGC },
{CC"youngGC", CC"()V", (void*)&WB_YoungGC },
{CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
{CC"allocateMetaspace",
CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
{CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
{CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
{CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
{CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
{CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
(void*)&WB_GetNMethod },
{CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
{CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
{CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
{CC"getCompilationActivityMode",
CC"()I", (void*)&WB_GetCompilationActivityMode},
{CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
(void*)&WB_GetMethodData },
{CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
{CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
{CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
{CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
(void*)&WB_DefineModule },
{CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
(void*)&WB_AddModuleExports },
{CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
(void*)&WB_AddReadsModule },
{CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
(void*)&WB_AddModuleExportsToAllUnnamed },
{CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
(void*)&WB_AddModuleExportsToAll },
{CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
{CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
{CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
{CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
{CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
{CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
{CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
{CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
{CC"remapInstructionOperandFromCPCache0",
CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
{CC"encodeConstantPoolIndyIndex0",
CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
{CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
{CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
{CC"getMethodBooleanOption",
CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
(void*)&WB_GetMethodBooleaneOption},
{CC"getMethodIntxOption",
CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
(void*)&WB_GetMethodIntxOption},
{CC"getMethodUintxOption",
CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
(void*)&WB_GetMethodUintxOption},
{CC"getMethodDoubleOption",
CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
(void*)&WB_GetMethodDoubleOption},
{CC"getMethodStringOption",
CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
(void*)&WB_GetMethodStringOption},
{CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
(void*)&WB_GetDefaultArchivePath},
{CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
{CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
{CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
{CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
{CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
{CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
{CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
{CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
{CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
{CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
{CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
{CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
{CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
{CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
{CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
{CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
{CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
{CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
{CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
{CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
{CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
{CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
{CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
(void*)&WB_AddCompilerDirective },
{CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
{CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
{CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
{CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
{CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
{CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
{CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
{CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
{CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
{CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
(void*)&WB_ConcurrentGCRunTo},
{CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
(void*)&WB_CheckLibSpecifiesNoexecstack},
{CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
{CC"validateCgroup",
CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
(void*)&WB_ValidateCgroup },
{CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
{CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
{CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
{CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
{CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
{CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
{CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
{CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
{CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
{CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
{CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
{CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
{CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
{CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
{CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
{CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
{CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
{CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
{CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
{CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
{CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
{CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
{CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
{CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
{CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
{CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
};
#undef CC
JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
{
if (WhiteBoxAPI) {
// Make sure that wbclass is loaded by the null classloader
InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
Handle loader(THREAD, ik->class_loader());
if (loader.is_null()) {
WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
WhiteBox::set_used();
}
}
}
JVM_END