OpenCL/xthread.h

#ifndef XTHREAD_H_
#define XTHREAD_H_

/* whether word reads are potentially non-atomic.
 * this is conservative, likely most arches this runs
 * on have atomic word read/writes.
 */
#ifndef WORDACCESS_UNSAFE
# if __i386 || __x86_64
#  define WORDACCESS_UNSAFE 0
# else
#  define WORDACCESS_UNSAFE 1
# endif
#endif

/////////////////////////////////////////////////////////////////////////////

#ifdef _WIN32

//#define NTDDI_VERSION NTDDI_WIN2K // needed to get win2000 api calls, fails with mingw
#define _WIN32_WINNT 0x400 // maybe working alternative for mingw
#include <stdio.h>//D
#include <fcntl.h>
#include <io.h>
#include <time.h>
#include <winsock2.h>
#include <process.h>
#include <windows.h>

/* work around some bugs in ptw32 */
#if defined(__MINGW32__) && defined(_TIMESPEC_DEFINED)
#define HAVE_STRUCT_TIMESPEC 1
#endif

#include <pthread.h>
#define sigset_t int
#define sigfillset(a)
#define pthread_sigmask(a,b,c)
#define sigaddset(a,b)
#define sigemptyset(s)

typedef pthread_mutex_t xmutex_t;
#define X_MUTEX_INIT           PTHREAD_MUTEX_INITIALIZER
#define X_MUTEX_CREATE(mutex)  pthread_mutex_init (&(mutex), 0)
#define X_LOCK(mutex)          pthread_mutex_lock (&(mutex))
#define X_UNLOCK(mutex)        pthread_mutex_unlock (&(mutex))

typedef pthread_cond_t xcond_t;
#define X_COND_INIT                     PTHREAD_COND_INITIALIZER
#define X_COND_CREATE(cond)             pthread_cond_init (&(cond), 0)
#define X_COND_SIGNAL(cond)             pthread_cond_signal (&(cond))
#define X_COND_WAIT(cond,mutex)         pthread_cond_wait (&(cond), &(mutex))
#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to))

typedef pthread_t xthread_t;
#define X_THREAD_PROC(name) static void *name (void *thr_arg)
#define X_THREAD_ATFORK(a,b,c)

static int
xthread_create (xthread_t *tid, void *(*proc)(void *), void *arg)
{
  int retval;
  pthread_attr_t attr;

  pthread_attr_init (&attr);
  pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);

  retval = pthread_create (tid, &attr, proc, arg) == 0;

  pthread_attr_destroy (&attr);

  return retval;
}

#define respipe_read(a,b,c)  PerlSock_recv ((a), (b), (c), 0)
#define respipe_write(a,b,c) send ((a), (b), (c), 0)
#define respipe_close(a)     PerlSock_closesocket ((a))

#else
/////////////////////////////////////////////////////////////////////////////

#if __linux && !defined(_GNU_SOURCE)
# define _GNU_SOURCE
#endif

/* just in case */
#define _REENTRANT 1

#if __solaris
# define _POSIX_PTHREAD_SEMANTICS 1
/* try to bribe solaris headers into providing a current pthread API
 * despite environment being configured for an older version.
 */
# define __EXTENSIONS__ 1
#endif

#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <limits.h>
#include <pthread.h>

typedef pthread_mutex_t xmutex_t;
#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
# define X_MUTEX_INIT           PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
# define X_MUTEX_CREATE(mutex)                                          \
  do {                                                                  \
    pthread_mutexattr_t attr;                                           \
    pthread_mutexattr_init (&attr);                                     \
    pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_ADAPTIVE_NP);       \
    pthread_mutex_init (&(mutex), &attr);                               \
  } while (0)
#else
# define X_MUTEX_INIT           PTHREAD_MUTEX_INITIALIZER
# define X_MUTEX_CREATE(mutex)  pthread_mutex_init (&(mutex), 0)
#endif
#define X_LOCK(mutex)           pthread_mutex_lock   (&(mutex))
#define X_UNLOCK(mutex)         pthread_mutex_unlock (&(mutex))

typedef pthread_cond_t xcond_t;
#define X_COND_INIT                     PTHREAD_COND_INITIALIZER
#define X_COND_CREATE(cond)             pthread_cond_init (&(cond), 0)
#define X_COND_SIGNAL(cond)             pthread_cond_signal (&(cond))
#define X_COND_WAIT(cond,mutex)         pthread_cond_wait (&(cond), &(mutex))
#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to))

typedef pthread_t xthread_t;
#define X_THREAD_PROC(name) static void *name (void *thr_arg)
#define X_THREAD_ATFORK(prepare,parent,child) pthread_atfork (prepare, parent, child)

// the broken bsd's once more
#ifndef PTHREAD_STACK_MIN
# define PTHREAD_STACK_MIN 0
#endif

#ifndef X_STACKSIZE
# define X_STACKSIZE sizeof (void *) * 4096
#endif

static int
xthread_create (xthread_t *tid, void *(*proc)(void *), void *arg)
{
  int retval;
  sigset_t fullsigset, oldsigset;
  pthread_attr_t attr;

  pthread_attr_init (&attr);
  pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
  pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < X_STACKSIZE ? X_STACKSIZE : PTHREAD_STACK_MIN);
#ifdef PTHREAD_SCOPE_PROCESS
  pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
#endif

  sigfillset (&fullsigset);

  pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
  retval = pthread_create (tid, &attr, proc, arg) == 0;
  pthread_sigmask (SIG_SETMASK, &oldsigset, 0);

  pthread_attr_destroy (&attr);

  return retval;
}

#define respipe_read(a,b,c)  read  ((a), (b), (c))
#define respipe_write(a,b,c) write ((a), (b), (c))
#define respipe_close(a)     close ((a))

#endif

#endif

Revision:	1.4
Committed:	Tue Oct 22 17:25:38 2013 UTC (12 years, 10 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.3:	+8 -2 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#ifndef XTHREAD_H_
2			#define XTHREAD_H_
3
4			/* whether word reads are potentially non-atomic.
5			* this is conservative, likely most arches this runs
6			* on have atomic word read/writes.
7			*/
8			#ifndef WORDACCESS_UNSAFE
9			# if __i386 \|\| __x86_64
10			# define WORDACCESS_UNSAFE 0
11			# else
12			# define WORDACCESS_UNSAFE 1
13			# endif
14			#endif
15
16			/////////////////////////////////////////////////////////////////////////////
17
18			#ifdef _WIN32
19
20	root	1.4	//#define NTDDI_VERSION NTDDI_WIN2K // needed to get win2000 api calls, fails with mingw
21			#define _WIN32_WINNT 0x400 // maybe working alternative for mingw
22	root	1.1	#include <stdio.h>//D
23			#include <fcntl.h>
24			#include <io.h>
25			#include <time.h>
26			#include <winsock2.h>
27			#include <process.h>
28			#include <windows.h>
29	root	1.4
30			/* work around some bugs in ptw32 */
31			#if defined(__MINGW32__) && defined(_TIMESPEC_DEFINED)
32			#define HAVE_STRUCT_TIMESPEC 1
33			#endif
34
35	root	1.1	#include <pthread.h>
36			#define sigset_t int
37			#define sigfillset(a)
38			#define pthread_sigmask(a,b,c)
39			#define sigaddset(a,b)
40			#define sigemptyset(s)
41
42			typedef pthread_mutex_t xmutex_t;
43			#define X_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
44			#define X_MUTEX_CREATE(mutex) pthread_mutex_init (&(mutex), 0)
45			#define X_LOCK(mutex) pthread_mutex_lock (&(mutex))
46			#define X_UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
47
48			typedef pthread_cond_t xcond_t;
49			#define X_COND_INIT PTHREAD_COND_INITIALIZER
50			#define X_COND_CREATE(cond) pthread_cond_init (&(cond), 0)
51			#define X_COND_SIGNAL(cond) pthread_cond_signal (&(cond))
52			#define X_COND_WAIT(cond,mutex) pthread_cond_wait (&(cond), &(mutex))
53			#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to))
54
55			typedef pthread_t xthread_t;
56	root	1.2	#define X_THREAD_PROC(name) static void name (void thr_arg)
57	root	1.1	#define X_THREAD_ATFORK(a,b,c)
58
59			static int
60	root	1.3	xthread_create (xthread_t tid, void (proc)(void ), void *arg)
61	root	1.1	{
62			int retval;
63			pthread_attr_t attr;
64
65			pthread_attr_init (&attr);
66			pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
67
68			retval = pthread_create (tid, &attr, proc, arg) == 0;
69
70			pthread_attr_destroy (&attr);
71
72			return retval;
73			}
74
75			#define respipe_read(a,b,c) PerlSock_recv ((a), (b), (c), 0)
76			#define respipe_write(a,b,c) send ((a), (b), (c), 0)
77			#define respipe_close(a) PerlSock_closesocket ((a))
78
79			#else
80			/////////////////////////////////////////////////////////////////////////////
81
82			#if __linux && !defined(_GNU_SOURCE)
83			# define _GNU_SOURCE
84			#endif
85
86			/* just in case */
87			#define _REENTRANT 1
88
89			#if __solaris
90			# define _POSIX_PTHREAD_SEMANTICS 1
91			/* try to bribe solaris headers into providing a current pthread API
92			* despite environment being configured for an older version.
93			*/
94			# define __EXTENSIONS__ 1
95			#endif
96
97			#include <unistd.h>
98			#include <fcntl.h>
99			#include <signal.h>
100			#include <limits.h>
101			#include <pthread.h>
102
103			typedef pthread_mutex_t xmutex_t;
104			#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
105			# define X_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
106			# define X_MUTEX_CREATE(mutex) \
107			do { \
108			pthread_mutexattr_t attr; \
109			pthread_mutexattr_init (&attr); \
110			pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_ADAPTIVE_NP); \
111			pthread_mutex_init (&(mutex), &attr); \
112			} while (0)
113			#else
114			# define X_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
115			# define X_MUTEX_CREATE(mutex) pthread_mutex_init (&(mutex), 0)
116			#endif
117			#define X_LOCK(mutex) pthread_mutex_lock (&(mutex))
118			#define X_UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
119
120			typedef pthread_cond_t xcond_t;
121			#define X_COND_INIT PTHREAD_COND_INITIALIZER
122			#define X_COND_CREATE(cond) pthread_cond_init (&(cond), 0)
123			#define X_COND_SIGNAL(cond) pthread_cond_signal (&(cond))
124			#define X_COND_WAIT(cond,mutex) pthread_cond_wait (&(cond), &(mutex))
125			#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to))
126
127			typedef pthread_t xthread_t;
128			#define X_THREAD_PROC(name) static void name (void thr_arg)
129			#define X_THREAD_ATFORK(prepare,parent,child) pthread_atfork (prepare, parent, child)
130
131			// the broken bsd's once more
132			#ifndef PTHREAD_STACK_MIN
133			# define PTHREAD_STACK_MIN 0
134			#endif
135
136			#ifndef X_STACKSIZE
137			# define X_STACKSIZE sizeof (void ) 4096
138			#endif
139
140			static int
141	root	1.3	xthread_create (xthread_t tid, void (proc)(void ), void *arg)
142	root	1.1	{
143			int retval;
144			sigset_t fullsigset, oldsigset;
145			pthread_attr_t attr;
146
147			pthread_attr_init (&attr);
148			pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
149			pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < X_STACKSIZE ? X_STACKSIZE : PTHREAD_STACK_MIN);
150			#ifdef PTHREAD_SCOPE_PROCESS
151			pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
152			#endif
153
154			sigfillset (&fullsigset);
155
156			pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
157			retval = pthread_create (tid, &attr, proc, arg) == 0;
158			pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
159
160			pthread_attr_destroy (&attr);
161
162			return retval;
163			}
164
165			#define respipe_read(a,b,c) read ((a), (b), (c))
166			#define respipe_write(a,b,c) write ((a), (b), (c))
167			#define respipe_close(a) close ((a))
168
169			#endif
170
171			#endif
172