blob: f5461eea556792cca98bf0f0a1af49631c81b535 (
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
|
// Copyright 2014 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 MOJO_PUBLIC_CPP_UTILITY_LIB_THREAD_LOCAL_H_
#define MOJO_PUBLIC_CPP_UTILITY_LIB_THREAD_LOCAL_H_
#ifndef _WIN32
#include <pthread.h>
#endif
#include "mojo/public/cpp/system/macros.h"
namespace mojo {
namespace internal {
// Helper functions that abstract the cross-platform APIs.
struct ThreadLocalPlatform {
#ifdef _WIN32
typedef unsigned long SlotType;
#else
typedef pthread_key_t SlotType;
#endif
static void AllocateSlot(SlotType* slot);
static void FreeSlot(SlotType slot);
static void* GetValueFromSlot(SlotType slot);
static void SetValueInSlot(SlotType slot, void* value);
};
// This class is intended to be statically allocated.
template <typename P>
class ThreadLocalPointer {
public:
ThreadLocalPointer() : slot_() {}
void Allocate() { ThreadLocalPlatform::AllocateSlot(&slot_); }
void Free() { ThreadLocalPlatform::FreeSlot(slot_); }
P* Get() {
return static_cast<P*>(ThreadLocalPlatform::GetValueFromSlot(slot_));
}
void Set(P* value) { ThreadLocalPlatform::SetValueInSlot(slot_, value); }
private:
ThreadLocalPlatform::SlotType slot_;
};
} // namespace internal
} // namespace mojo
#endif // MOJO_PUBLIC_CPP_UTILITY_LIB_THREAD_LOCAL_H_
|
