mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-28 00:06:09 +03:00
82 lines
3.2 KiB
C
82 lines
3.2 KiB
C
|
// Copyright 2015 The Chromium Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style license that can be
|
||
|
|
// found in the LICENSE file.
|
||
|
|
|
||
|
|
#ifndef BASE_TRACE_EVENT_MEMORY_DUMP_PROVIDER_H_
|
||
|
|
#define BASE_TRACE_EVENT_MEMORY_DUMP_PROVIDER_H_
|
||
|
|
|
||
|
|
#include "base/base_export.h"
|
||
|
|
#include "base/macros.h"
|
||
|
|
#include "base/process/process_handle.h"
|
||
|
|
#include "base/trace_event/memory_dump_request_args.h"
|
||
|
|
|
||
|
|
namespace base {
|
||
|
|
namespace trace_event {
|
||
|
|
|
||
|
|
class ProcessMemoryDump;
|
||
|
|
|
||
|
|
// The contract interface that memory dump providers must implement.
|
||
|
|
class BASE_EXPORT MemoryDumpProvider {
|
||
|
|
public:
|
||
|
|
// Optional arguments for MemoryDumpManager::RegisterDumpProvider().
|
||
|
|
struct Options {
|
||
|
|
Options()
|
||
|
|
: dumps_on_single_thread_task_runner(false),
|
||
|
|
is_fast_polling_supported(false),
|
||
|
|
supports_heap_profiling(false) {}
|
||
|
|
|
||
|
|
// |dumps_on_single_thread_task_runner| is true if the dump provider runs on
|
||
|
|
// a SingleThreadTaskRunner, which is usually the case. It is faster to run
|
||
|
|
// all providers that run on the same thread together without thread hops.
|
||
|
|
bool dumps_on_single_thread_task_runner;
|
||
|
|
|
||
|
|
// Set to true if the dump provider implementation supports high frequency
|
||
|
|
// polling. Only providers running without task runner affinity are
|
||
|
|
// supported.
|
||
|
|
bool is_fast_polling_supported;
|
||
|
|
|
||
|
|
// Set to true when the dump provider supports heap profiling. MDM sends
|
||
|
|
// OnHeapProfiling() notifications only if this is set to true.
|
||
|
|
bool supports_heap_profiling;
|
||
|
|
};
|
||
|
|
|
||
|
|
virtual ~MemoryDumpProvider() {}
|
||
|
|
|
||
|
|
// Called by the MemoryDumpManager when generating memory dumps.
|
||
|
|
// The |args| specify if the embedder should generate light/heavy dumps on
|
||
|
|
// dump requests. The embedder should return true if the |pmd| was
|
||
|
|
// successfully populated, false if something went wrong and the dump should
|
||
|
|
// be considered invalid.
|
||
|
|
// (Note, the MemoryDumpManager has a fail-safe logic which will disable the
|
||
|
|
// MemoryDumpProvider for the entire trace session if it fails consistently).
|
||
|
|
virtual bool OnMemoryDump(const MemoryDumpArgs& args,
|
||
|
|
ProcessMemoryDump* pmd) = 0;
|
||
|
|
|
||
|
|
// Called by the MemoryDumpManager when an allocator should start or stop
|
||
|
|
// collecting extensive allocation data, if supported. Called only when
|
||
|
|
// |supports_heap_profiling| is set to true.
|
||
|
|
virtual void OnHeapProfilingEnabled(bool enabled) {}
|
||
|
|
|
||
|
|
// Quickly record the total memory usage in |memory_total|. This method will
|
||
|
|
// be called only when the dump provider registration has
|
||
|
|
// |is_fast_polling_supported| set to true. This method is used for polling at
|
||
|
|
// high frequency for detecting peaks. See comment on
|
||
|
|
// |is_fast_polling_supported| option if you need to override this method.
|
||
|
|
virtual void PollFastMemoryTotal(uint64_t* memory_total) {}
|
||
|
|
|
||
|
|
// Indicates that fast memory polling is not going to be used in the near
|
||
|
|
// future and the MDP can tear down any resource kept around for fast memory
|
||
|
|
// polling.
|
||
|
|
virtual void SuspendFastMemoryPolling() {}
|
||
|
|
|
||
|
|
protected:
|
||
|
|
MemoryDumpProvider() {}
|
||
|
|
|
||
|
|
DISALLOW_COPY_AND_ASSIGN(MemoryDumpProvider);
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace trace_event
|
||
|
|
} // namespace base
|
||
|
|
|
||
|
|
#endif // BASE_TRACE_EVENT_MEMORY_DUMP_PROVIDER_H_
|