blob: 87e6b84fef480af2d26b81a14fe2068e22fe2739 (
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
|
/*
* Semaphore
* (C) 2013 Joel Low
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_SEMAPHORE_H__
#define BOTAN_SEMAPHORE_H__
#include <botan/mutex.h>
#if defined(BOTAN_TARGET_OS_HAS_THREADS)
#include <condition_variable>
#endif
namespace Botan {
#if defined(BOTAN_TARGET_OS_HAS_THREADS)
class Semaphore
{
public:
explicit Semaphore(int value = 0) : m_value(value), m_wakeups(0) {}
void acquire();
void release(size_t n = 1);
private:
int m_value;
int m_wakeups;
mutex_type m_mutex;
std::condition_variable m_cond;
};
#endif
}
#endif
|
