blob: 1b3fcb0a98b22ea5bb254c596e5cfe1ab7e1dadb (
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
|
// Copyright 2011 the V8 project 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 V8_STORE_BUFFER_H_
#define V8_STORE_BUFFER_H_
#include "src/allocation.h"
#include "src/base/logging.h"
#include "src/base/platform/platform.h"
#include "src/globals.h"
#include "src/heap/slot-set.h"
namespace v8 {
namespace internal {
// Intermediate buffer that accumulates old-to-new stores from the generated
// code. On buffer overflow the slots are moved to the remembered set.
class StoreBuffer {
public:
static const int kStoreBufferSize = 1 << (14 + kPointerSizeLog2);
static const int kStoreBufferMask = kStoreBufferSize - 1;
static void StoreBufferOverflow(Isolate* isolate);
explicit StoreBuffer(Heap* heap);
void SetUp();
void TearDown();
// Used to add entries from generated code.
inline Address* top_address() { return reinterpret_cast<Address*>(&top_); }
void MoveEntriesToRememberedSet();
private:
Heap* heap_;
Address* top_;
// The start and the limit of the buffer that contains store slots
// added from the generated code.
Address* start_;
Address* limit_;
base::VirtualMemory* virtual_memory_;
};
} // namespace internal
} // namespace v8
#endif // V8_STORE_BUFFER_H_
|
