blob: 5c0191e25bfea4cb291d838117200d43d98b4ab3 (
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
55
56
57
58
59
60
61
62
|
/*
Copyright (C) 2010 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __pbd_semutils_h__
#define __pbd_semutils_h__
#ifdef PLATFORM_WINDOWS
#include <windows.h>
#else
#include <semaphore.h>
#endif
#include "pbd/libpbd_visibility.h"
namespace PBD {
class LIBPBD_API ProcessSemaphore {
private:
#ifdef PLATFORM_WINDOWS
HANDLE _sem;
#elif __APPLE__
sem_t* _sem;
sem_t* ptr_to_sem() const { return _sem; }
#else
mutable sem_t _sem;
sem_t* ptr_to_sem() const { return &_sem; }
#endif
public:
ProcessSemaphore (const char* name, int val);
~ProcessSemaphore ();
#ifdef PLATFORM_WINDOWS
int signal ();
int wait ();
#else
int signal () { return sem_post (ptr_to_sem()); }
int wait () { return sem_wait (ptr_to_sem()); }
#endif
};
}
#endif /* __pbd_semutils_h__ */
|
