blob: c0f50a0aa51aa5320309ec6276536c5bc4ae9e18 [file] [log] [blame]
/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "base/threading/thread_task_runner_handle.h"
#include "base/trace_event/memory_dump_manager.h"
#include "platform/Histogram.h"
#include "platform/MemoryCacheDumpProvider.h"
#include "platform/PartitionAllocMemoryDumpProvider.h"
#include "platform/fonts/FontCacheMemoryDumpProvider.h"
#include "platform/heap/BlinkGCMemoryDumpProvider.h"
#include "platform/heap/GCTaskRunner.h"
#include "public/platform/Platform.h"
#include "public/platform/ServiceRegistry.h"
#include "public/platform/WebPrerenderingSupport.h"
#include "wtf/HashMap.h"
namespace blink {
static Platform* s_platform = nullptr;
static GCTaskRunner* s_gcTaskRunner = nullptr;
Platform::Platform()
: m_mainThread(0)
{
}
static void maxObservedSizeFunction(size_t sizeInMB)
{
const size_t supportedMaxSizeInMB = 4 * 1024;
if (sizeInMB >= supportedMaxSizeInMB)
sizeInMB = supportedMaxSizeInMB - 1;
// Send a UseCounter only when we see the highest memory usage
// we've ever seen.
DEFINE_STATIC_LOCAL(EnumerationHistogram, committedSizeHistogram, ("PartitionAlloc.CommittedSize", supportedMaxSizeInMB));
committedSizeHistogram.count(sizeInMB);
}
static void callOnMainThreadFunction(WTF::MainThreadFunction function, void* context)
{
Platform::current()->mainThread()->getWebTaskRunner()->postTask(BLINK_FROM_HERE, threadSafeBind(function, AllowCrossThreadAccess(context)));
}
void Platform::initialize(Platform* platform)
{
ASSERT(!s_platform);
ASSERT(platform);
s_platform = platform;
s_platform->m_mainThread = platform->currentThread();
WTF::Partitions::initialize(maxObservedSizeFunction);
WTF::initialize(callOnMainThreadFunction);
ProcessHeap::init();
if (base::ThreadTaskRunnerHandle::IsSet())
base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(BlinkGCMemoryDumpProvider::instance(), "BlinkGC", base::ThreadTaskRunnerHandle::Get());
ThreadState::attachMainThread();
// TODO(ssid): remove this check after fixing crbug.com/486782.
if (s_platform->m_mainThread) {
ASSERT(!s_gcTaskRunner);
s_gcTaskRunner = new GCTaskRunner(s_platform->m_mainThread);
base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(PartitionAllocMemoryDumpProvider::instance(), "PartitionAlloc", base::ThreadTaskRunnerHandle::Get());
base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(FontCacheMemoryDumpProvider::instance(), "FontCaches", base::ThreadTaskRunnerHandle::Get());
base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(MemoryCacheDumpProvider::instance(), "MemoryCache", base::ThreadTaskRunnerHandle::Get());
}
}
void Platform::shutdown()
{
ASSERT(isMainThread());
if (s_platform->m_mainThread) {
base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(FontCacheMemoryDumpProvider::instance());
base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(PartitionAllocMemoryDumpProvider::instance());
base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(BlinkGCMemoryDumpProvider::instance());
base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(MemoryCacheDumpProvider::instance());
ASSERT(s_gcTaskRunner);
delete s_gcTaskRunner;
s_gcTaskRunner = nullptr;
}
// Detach the main thread before starting the shutdown sequence
// so that the main thread won't get involved in a GC during the shutdown.
ThreadState::detachMainThread();
ProcessHeap::shutdown();
WTF::shutdown();
WTF::Partitions::shutdown();
s_platform->m_mainThread = nullptr;
s_platform = nullptr;
}
void Platform::setCurrentPlatformForTesting(Platform* platform)
{
ASSERT(platform);
s_platform = platform;
s_platform->m_mainThread = platform->currentThread();
}
Platform* Platform::current()
{
return s_platform;
}
WebThread* Platform::mainThread() const
{
return m_mainThread;
}
ServiceRegistry* Platform::serviceRegistry()
{
return ServiceRegistry::getEmptyServiceRegistry();
}
} // namespace blink