src/hotspot/share/services/mallocTracker.inline.hpp

/*
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#ifndef SHARE_SERVICES_MALLOCTRACKER_INLINE_HPP
#define SHARE_SERVICES_MALLOCTRACKER_INLINE_HPP

#include "services/mallocLimit.hpp"
#include "services/mallocTracker.hpp"
#include "utilities/debug.hpp"
#include "utilities/globalDefinitions.hpp"

// Returns true if allocating s bytes on f would trigger either global or the category limit
inline bool MallocMemorySummary::check_exceeds_limit(size_t s, MEMFLAGS f) {

  // Note: checks are ordered to have as little impact as possible on the standard code path,
  // when MallocLimit is unset, resp. it is set but we have reached no limit yet.
  // Somewhat expensive are:
  // - as_snapshot()->total(), total malloc load (requires iteration over arena types)
  // - VMError::is_error_reported() is a load from a volatile.
  if (MallocLimitHandler::have_limit()) {

    // Global Limit ?
    const malloclimit* l = MallocLimitHandler::global_limit();
    if (l->sz > 0) {
      size_t so_far = as_snapshot()->total();
      if ((so_far + s) > l->sz) { // hit the limit
        return total_limit_reached(s, so_far, l);
      }
    } else {
      // Category Limit?
      l = MallocLimitHandler::category_limit(f);
      if (l->sz > 0) {
        const MallocMemory* mm = as_snapshot()->by_type(f);
        size_t so_far = mm->malloc_size() + mm->arena_size();
        if ((so_far + s) > l->sz) {
          return category_limit_reached(f, s, so_far, l);
        }
      }
    }
  }

  return false;
}

inline bool MallocTracker::check_exceeds_limit(size_t s, MEMFLAGS f) {
  return MallocMemorySummary::check_exceeds_limit(s, f);
}


#endif // SHARE_SERVICES_MALLOCTRACKER_INLINE_HPP