Importing rustc-1.38.0
diff --git a/src/llvm-project/compiler-rt/test/xray/TestCases/Posix/logging-modes.cc b/src/llvm-project/compiler-rt/test/xray/TestCases/Posix/logging-modes.cc
new file mode 100644
index 0000000..f839ba5
--- /dev/null
+++ b/src/llvm-project/compiler-rt/test/xray/TestCases/Posix/logging-modes.cc
@@ -0,0 +1,95 @@
+// Check that we can install an implementation associated with a mode.
+//
+// RUN: rm -f xray-log.logging-modes*
+// RUN: %clangxx_xray -std=c++11 %s -o %t -fxray-modes=none
+// RUN: %run %t | FileCheck %s
+//
+// UNSUPPORTED: target-is-mips64,target-is-mips64el
+
+#include "xray/xray_interface.h"
+#include "xray/xray_log_interface.h"
+#include <cassert>
+#include <cstdio>
+#include <string>
+
+[[clang::xray_never_instrument]] void printing_handler(int32_t fid,
+ XRayEntryType) {
+ thread_local volatile bool printing = false;
+ if (printing)
+ return;
+ printing = true;
+ std::printf("printing %d\n", fid);
+ printing = false;
+}
+
+[[clang::xray_never_instrument]] XRayBuffer next_buffer(XRayBuffer buffer) {
+ static const char data[10] = {};
+ static const XRayBuffer first_and_last{data, 10};
+ if (buffer.Data == nullptr)
+ return first_and_last;
+ if (buffer.Data == first_and_last.Data)
+ return XRayBuffer{nullptr, 0};
+ assert(false && "Invalid buffer provided.");
+}
+
+static constexpr char Options[] = "additional_flags";
+
+[[clang::xray_never_instrument]] XRayLogInitStatus
+printing_init(size_t BufferSize, size_t MaxBuffers, void *Config,
+ size_t ArgsSize) {
+ // We require that the printing init is called through the
+ // __xray_log_init_mode(...) implementation, and that the promised contract is
+ // enforced.
+ assert(BufferSize == 0);
+ assert(MaxBuffers == 0);
+ assert(Config != nullptr);
+ assert(ArgsSize == 0 || ArgsSize == sizeof(Options));
+ __xray_log_set_buffer_iterator(next_buffer);
+ return XRayLogInitStatus::XRAY_LOG_INITIALIZED;
+}
+
+[[clang::xray_never_instrument]] XRayLogInitStatus printing_finalize() {
+ return XRayLogInitStatus::XRAY_LOG_FINALIZED;
+}
+
+[[clang::xray_never_instrument]] XRayLogFlushStatus printing_flush_log() {
+ __xray_log_remove_buffer_iterator();
+ return XRayLogFlushStatus::XRAY_LOG_FLUSHED;
+}
+
+[[clang::xray_always_instrument]] void callme() { std::printf("called me!\n"); }
+
+static auto buffer_counter = 0;
+
+void process_buffer(const char *, XRayBuffer) { ++buffer_counter; }
+
+int main(int argc, char **argv) {
+ assert(__xray_log_register_mode("custom",
+ {printing_init, printing_finalize,
+ printing_handler, printing_flush_log}) ==
+ XRayLogRegisterStatus::XRAY_REGISTRATION_OK);
+ assert(__xray_log_select_mode("custom") ==
+ XRayLogRegisterStatus::XRAY_REGISTRATION_OK);
+ assert(__xray_log_get_current_mode() != nullptr);
+ std::string current_mode = __xray_log_get_current_mode();
+ assert(current_mode == "custom");
+ assert(__xray_patch() == XRayPatchingStatus::SUCCESS);
+ assert(__xray_log_init_mode("custom", "flags_config_here=true") ==
+ XRayLogInitStatus::XRAY_LOG_INITIALIZED);
+
+ // Also test that we can use the "binary" version of the
+ // __xray_log_niit_mode(...) API.
+ assert(__xray_log_init_mode_bin("custom", Options, sizeof(Options)) ==
+ XRayLogInitStatus::XRAY_LOG_INITIALIZED);
+
+ // CHECK: printing {{.*}}
+ callme(); // CHECK: called me!
+ // CHECK: printing {{.*}}
+ assert(__xray_log_finalize() == XRayLogInitStatus::XRAY_LOG_FINALIZED);
+ assert(__xray_log_process_buffers(process_buffer) ==
+ XRayLogFlushStatus::XRAY_LOG_FLUSHED);
+ assert(buffer_counter == 1);
+ assert(__xray_log_flushLog() == XRayLogFlushStatus::XRAY_LOG_FLUSHED);
+ assert(__xray_log_select_mode("not-found") ==
+ XRayLogRegisterStatus::XRAY_MODE_NOT_FOUND);
+}
