mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-25 13:51:41 +00:00
122 lines
2.6 KiB
C++
122 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "UncensoredAllocator.h"
|
|
|
|
#include "mozilla/Assertions.h"
|
|
#include "mozilla/unused.h"
|
|
|
|
#include "MainThreadUtils.h"
|
|
#include "jsfriendapi.h"
|
|
#include "nsDebug.h"
|
|
#include "prlock.h"
|
|
#ifdef MOZ_REPLACE_MALLOC
|
|
#include "replace_malloc_bridge.h"
|
|
#endif
|
|
|
|
namespace mozilla {
|
|
|
|
#ifdef MOZ_REPLACE_MALLOC
|
|
MOZ_THREAD_LOCAL(bool) MallocHook::mEnabledTLS;
|
|
NativeProfiler* MallocHook::mNativeProfiler;
|
|
malloc_hook_table_t MallocHook::mMallocHook;
|
|
#endif
|
|
|
|
AutoUseUncensoredAllocator::AutoUseUncensoredAllocator()
|
|
{
|
|
#ifdef MOZ_REPLACE_MALLOC
|
|
MallocHook::mEnabledTLS.set(false);
|
|
#endif
|
|
}
|
|
|
|
AutoUseUncensoredAllocator::~AutoUseUncensoredAllocator()
|
|
{
|
|
#ifdef MOZ_REPLACE_MALLOC
|
|
MallocHook::mEnabledTLS.set(true);
|
|
#endif
|
|
}
|
|
|
|
bool
|
|
MallocHook::Enabled()
|
|
{
|
|
#ifdef MOZ_REPLACE_MALLOC
|
|
return mEnabledTLS.get() && mNativeProfiler;
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
void*
|
|
MallocHook::SampleNative(void* aAddr, size_t aSize)
|
|
{
|
|
#ifdef MOZ_REPLACE_MALLOC
|
|
if (MallocHook::Enabled()) {
|
|
mNativeProfiler->sampleNative(aAddr, aSize);
|
|
}
|
|
#endif
|
|
return aAddr;
|
|
}
|
|
|
|
void
|
|
MallocHook::RemoveNative(void* aAddr)
|
|
{
|
|
#ifdef MOZ_REPLACE_MALLOC
|
|
if (MallocHook::Enabled()) {
|
|
mNativeProfiler->removeNative(aAddr);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void
|
|
MallocHook::Initialize()
|
|
{
|
|
#ifdef MOZ_REPLACE_MALLOC
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
mMallocHook.free_hook = RemoveNative;
|
|
mMallocHook.malloc_hook = SampleNative;
|
|
ReplaceMallocBridge* bridge = ReplaceMallocBridge::Get(3);
|
|
if (bridge) {
|
|
mozilla::Unused << bridge->RegisterHook("memory-profiler", nullptr, nullptr);
|
|
}
|
|
|
|
bool success = mEnabledTLS.init();
|
|
if (NS_WARN_IF(!success)) {
|
|
return;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void
|
|
MallocHook::Enable(NativeProfiler* aNativeProfiler)
|
|
{
|
|
#ifdef MOZ_REPLACE_MALLOC
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
ReplaceMallocBridge* bridge = ReplaceMallocBridge::Get(3);
|
|
if (bridge) {
|
|
const malloc_table_t* alloc_funcs =
|
|
bridge->RegisterHook("memory-profiler", nullptr, &mMallocHook);
|
|
if (alloc_funcs) {
|
|
mNativeProfiler = aNativeProfiler;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void
|
|
MallocHook::Disable()
|
|
{
|
|
#ifdef MOZ_REPLACE_MALLOC
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
ReplaceMallocBridge* bridge = ReplaceMallocBridge::Get(3);
|
|
if (bridge) {
|
|
bridge->RegisterHook("memory-profiler", nullptr, nullptr);
|
|
mNativeProfiler = nullptr;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
} // namespace mozilla
|