blob: f5b75d7678155a3c7fc7172d23d11ee68fbdc639 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
// 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_INSTRUMENTATION_TRACING_MEMORY_CACHE_DUMP_PROVIDER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_INSTRUMENTATION_TRACING_MEMORY_CACHE_DUMP_PROVIDER_H_
#include "base/trace_event/memory_dump_provider.h"
#include "base/trace_event/process_memory_dump.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"
#include "third_party/blink/renderer/platform/instrumentation/tracing/web_process_memory_dump.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace blink {
class PLATFORM_EXPORT MemoryCacheDumpClient : public GarbageCollectedMixin {
public:
virtual ~MemoryCacheDumpClient() = default;
virtual bool OnMemoryDump(WebMemoryDumpLevelOfDetail,
WebProcessMemoryDump*) = 0;
void Trace(Visitor*) const override;
};
// This class is wrapper around MemoryCache to take memory snapshots. It dumps
// the stats of cache only after the cache is created.
class PLATFORM_EXPORT MemoryCacheDumpProvider final
: public base::trace_event::MemoryDumpProvider {
USING_FAST_MALLOC(MemoryCacheDumpProvider);
public:
// This class is singleton since there is a global MemoryCache object.
static MemoryCacheDumpProvider* Instance();
MemoryCacheDumpProvider(const MemoryCacheDumpProvider&) = delete;
MemoryCacheDumpProvider& operator=(const MemoryCacheDumpProvider&) = delete;
~MemoryCacheDumpProvider() override;
// base::trace_event::MemoryDumpProvider implementation.
bool OnMemoryDump(const base::trace_event::MemoryDumpArgs&,
base::trace_event::ProcessMemoryDump*) override;
void SetMemoryCache(MemoryCacheDumpClient* client) {
DCHECK(IsMainThread());
client_ = client;
}
private:
MemoryCacheDumpProvider();
WeakPersistent<MemoryCacheDumpClient> client_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_INSTRUMENTATION_TRACING_MEMORY_CACHE_DUMP_PROVIDER_H_
|
