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1 // Copyright 2013 The Chromium 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 MOJO_PUBLIC_BINDINGS_BUFFER_H_ | |
6 #define MOJO_PUBLIC_BINDINGS_BUFFER_H_ | |
7 | |
8 #include <stddef.h> | |
9 | |
10 namespace mojo { | |
11 | |
12 // Buffer provides a way to allocate memory. Allocations are 8-byte aligned and | |
13 // zero-initialized. Allocations remain valid for the lifetime of the Buffer. | |
14 class Buffer { | |
15 public: | |
16 typedef void (*Destructor)(void* address); | |
17 | |
18 Buffer(); | |
19 virtual ~Buffer(); | |
20 | |
21 // A destructor may optionally be assigned to the allocation. Destructors run | |
22 // (in LIFO order) when the Buffer instance is destroyed. | |
23 virtual void* Allocate(size_t num_bytes, Destructor func = NULL) = 0; | |
24 | |
25 // Returns the current Buffer from thread local storage. May be NULL. | |
26 static Buffer* current(); | |
27 | |
28 private: | |
29 Buffer* previous_; | |
30 }; | |
31 | |
32 } // namespace mojo | |
33 | |
34 #endif // MOJO_PUBLIC_BINDINGS_BUFFER_H_ | |
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