V8 API Reference, 7.2.502.16 (for Deno 0.2.4)
page-allocator.h
1 // Copyright 2017 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef V8_BASE_PAGE_ALLOCATOR_H_
6 #define V8_BASE_PAGE_ALLOCATOR_H_
7 
8 #include "include/v8-platform.h"
9 #include "src/base/base-export.h"
10 #include "src/base/compiler-specific.h"
11 
12 namespace v8 {
13 namespace base {
14 
15 class V8_BASE_EXPORT PageAllocator
16  : public NON_EXPORTED_BASE(::v8::PageAllocator) {
17  public:
18  PageAllocator();
19  ~PageAllocator() override = default;
20 
21  size_t AllocatePageSize() override { return allocate_page_size_; }
22 
23  size_t CommitPageSize() override { return commit_page_size_; }
24 
25  void SetRandomMmapSeed(int64_t seed) override;
26 
27  void* GetRandomMmapAddr() override;
28 
29  void* AllocatePages(void* address, size_t size, size_t alignment,
30  PageAllocator::Permission access) override;
31 
32  bool FreePages(void* address, size_t size) override;
33 
34  bool ReleasePages(void* address, size_t size, size_t new_size) override;
35 
36  bool SetPermissions(void* address, size_t size,
37  PageAllocator::Permission access) override;
38 
39  bool DiscardSystemPages(void* address, size_t size) override;
40 
41  private:
42  const size_t allocate_page_size_;
43  const size_t commit_page_size_;
44 };
45 
46 } // namespace base
47 } // namespace v8
48 #endif // V8_BASE_PAGE_ALLOCATOR_H_
Definition: libplatform.h:13