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
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// Copyright 2020 The Chromium Authors
// 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_HEAP_THREAD_STATE_SCOPES_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_HEAP_THREAD_STATE_SCOPES_H_
#include "third_party/blink/renderer/platform/heap/thread_state.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "v8/include/cppgc/heap-consistency.h"
#if defined(LEAK_SANITIZER)
#include <sanitizer/lsan_interface.h>
#endif
namespace blink {
// The NoAllocationScope class is used in debug mode to catch unwanted
// allocations. E.g. allocations during GC.
class ThreadState::NoAllocationScope final {
STACK_ALLOCATED();
public:
explicit NoAllocationScope(ThreadState* state)
: disallow_gc_(state->cpp_heap().GetHeapHandle()) {}
NoAllocationScope(const NoAllocationScope&) = delete;
NoAllocationScope& operator=(const NoAllocationScope&) = delete;
private:
const cppgc::subtle::DisallowGarbageCollectionScope disallow_gc_;
};
// The GCForbiddenScope class is used to prevent GC finalization
// when it is not safe to do so.
class ThreadState::GCForbiddenScope final {
STACK_ALLOCATED();
public:
explicit GCForbiddenScope(ThreadState* state)
: no_gc_(state->cpp_heap().GetHeapHandle()) {}
GCForbiddenScope(const NoAllocationScope&) = delete;
GCForbiddenScope& operator=(const NoAllocationScope&) = delete;
private:
const cppgc::subtle::NoGarbageCollectionScope no_gc_;
};
#if defined(LEAK_SANITIZER)
class LsanDisabledScope final {
STACK_ALLOCATED();
public:
explicit LsanDisabledScope() { __lsan_disable(); }
~LsanDisabledScope() { __lsan_enable(); }
LsanDisabledScope(const LsanDisabledScope&) = delete;
LsanDisabledScope& operator=(const LsanDisabledScope&) = delete;
};
#define LEAK_SANITIZER_DISABLED_SCOPE LsanDisabledScope lsan_disabled_scope
#else
#define LEAK_SANITIZER_DISABLED_SCOPE
#endif
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_HEAP_THREAD_STATE_SCOPES_H_
|
