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| author | Guenter Bartsch <guenter@users.sourceforge.net> | 2003-04-20 16:42:06 +0000 |
|---|---|---|
| committer | Guenter Bartsch <guenter@users.sourceforge.net> | 2003-04-20 16:42:06 +0000 |
| commit | ce4f3efd78c110c015c54eab05f201d1caac5f8d (patch) | |
| tree | 668c555d5de70518b93426f45fe3e44d7f06663c /win32/contrib/pthreads/nonportable.c | |
| parent | 80f6215b607f0ed76f7f75deaf4e4668bc6f244d (diff) | |
| download | xine-lib-ce4f3efd78c110c015c54eab05f201d1caac5f8d.tar.gz xine-lib-ce4f3efd78c110c015c54eab05f201d1caac5f8d.tar.bz2 | |
importing win32 contrib sources and msvc build environment
CVS patchset: 4641
CVS date: 2003/04/20 16:42:06
Diffstat (limited to 'win32/contrib/pthreads/nonportable.c')
| -rw-r--r-- | win32/contrib/pthreads/nonportable.c | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/win32/contrib/pthreads/nonportable.c b/win32/contrib/pthreads/nonportable.c new file mode 100644 index 000000000..078842ff0 --- /dev/null +++ b/win32/contrib/pthreads/nonportable.c @@ -0,0 +1,248 @@ +/*
+ * nonportable.c
+ *
+ * Description:
+ * This translation unit implements non-portable thread functions.
+ *
+ * Pthreads-win32 - POSIX Threads Library for Win32
+ * Copyright (C) 1998
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA
+ */
+
+#include "pthread.h"
+#include "implement.h"
+
+/*
+ * pthread_mutexattr_setkind_np()
+ */
+int pthread_mutexattr_setkind_np(pthread_mutexattr_t * attr, int kind)
+{
+ return pthread_mutexattr_settype( attr, kind );
+}
+
+
+/*
+ * pthread_mutexattr_getkind_np()
+ */
+int pthread_mutexattr_getkind_np(pthread_mutexattr_t * attr, int *kind)
+{
+ return pthread_mutexattr_gettype( attr, kind );
+}
+
+
+/*
+ * pthread_getw32threadhandle_np()
+ *
+ * Returns the win32 thread handle that the POSIX
+ * thread "thread" is running as.
+ *
+ * Applications can use the win32 handle to set
+ * win32 specific attributes of the thread.
+ */
+HANDLE
+pthread_getw32threadhandle_np(pthread_t thread)
+{
+ return (thread != NULL) ? (thread->threadH) : 0;
+}
+
+
+/*
+ * Provide pthread_delay_np posix function for NT
+ *
+ * DESCRIPTION
+ *
+ * This routine causes a thread to delay execution for a specific period of time.
+ * This period ends at the current time plus the specified interval. The routine
+ * will not return before the end of the period is reached, but may return an
+ * arbitrary amount of time after the period has gone by. This can be due to
+ * system load, thread priorities, and system timer granularity.
+ *
+ * Specifying an interval of zero (0) seconds and zero (0) nanoseconds is
+ * allowed and can be used to force the thread to give up the processor or to
+ * deliver a pending cancelation request.
+ *
+ * The timespec structure contains the following two fields:
+ *
+ * tv_sec is an integer number of seconds.
+ * tv_nsec is an integer number of nanoseconds.
+ *
+ * Return Values
+ *
+ * If an error condition occurs, this routine returns an integer value indicating
+ * the type of error. Possible return values are as follows:
+ *
+ * 0
+ * Successful completion.
+ * [EINVAL]
+ * The value specified by interval is invalid.
+ *
+ * Example
+ *
+ * The following code segment would wait for 5 and 1/2 seconds
+ *
+ * struct timespec tsWait;
+ * int intRC;
+ *
+ * tsWait.tv_sec = 5;
+ * tsWait.tv_nsec = 500000000L;
+ * intRC = pthread_delay_np(&tsWait);
+ */
+int
+pthread_delay_np (struct timespec * interval)
+{
+ DWORD wait_time, secs_in_millisecs, millisecs;
+
+ /*
+ * We are a cancelation point.
+ */
+ pthread_testcancel();
+
+ if (interval->tv_sec < 0 || interval->tv_nsec < 0)
+ {
+ return (EINVAL);
+ }
+
+ secs_in_millisecs = interval->tv_sec * 1000L; /* convert secs to millisecs */
+
+ /*
+ * Pedantically, we're ensuring that we don't return before the time is up,
+ * even by a fraction of a millisecond.
+ */
+ millisecs = (interval->tv_nsec + 999999L) / 1000000L; /* convert nanosecs to millisecs */
+
+ wait_time = secs_in_millisecs + millisecs;
+
+ Sleep(wait_time);
+
+ pthread_testcancel();
+
+ return (0);
+}
+
+
+/*
+ * pthread_getprocessors_np()
+ *
+ * Get the number of CPUs available to the process.
+ *
+ * If the available number of CPUs is 1 then pthread_spin_lock()
+ * will block rather than spin if the lock is already owned.
+ *
+ * pthread_spin_init() calls this routine when initialising
+ * a spinlock. If the number of available processors changes
+ * (after a call to SetProcessAffinityMask()) then only
+ * newly initialised spinlocks will notice.
+ */
+int
+pthread_getprocessors_np(int * count)
+{
+ DWORD vProcessCPUs;
+ DWORD vSystemCPUs;
+ int result = 0;
+
+ if (GetProcessAffinityMask(GetCurrentProcess(),
+ &vProcessCPUs,
+ &vSystemCPUs))
+ {
+ DWORD bit;
+ int CPUs = 0;
+
+ for (bit = 1; bit != 0; bit <<= 1)
+ {
+ if (vProcessCPUs & bit)
+ {
+ CPUs++;
+ }
+ }
+ *count = CPUs;
+ }
+ else
+ {
+ result = EAGAIN;
+ }
+
+ return(result);
+}
+
+
+BOOL
+pthread_win32_process_attach_np ()
+{
+ BOOL result = TRUE;
+
+ result = ptw32_processInitialize ();
+#ifdef _UWIN
+ pthread_count++;
+#endif
+
+ return result;
+}
+
+BOOL
+pthread_win32_process_detach_np ()
+{
+ if (ptw32_processInitialized)
+ {
+ pthread_t self = (pthread_t) pthread_getspecific (ptw32_selfThreadKey);
+
+ /*
+ * Detached threads have their resources automatically
+ * cleaned up upon exit (others must be 'joined').
+ */
+ if (self != NULL &&
+ self->detachState == PTHREAD_CREATE_DETACHED)
+ {
+ pthread_setspecific (ptw32_selfThreadKey, NULL);
+ ptw32_threadDestroy (self);
+ }
+
+ /*
+ * The DLL is being unmapped into the process's address space
+ */
+ ptw32_processTerminate ();
+ }
+
+ return TRUE;
+}
+
+BOOL
+pthread_win32_thread_attach_np ()
+{
+ return TRUE;
+}
+
+BOOL
+pthread_win32_thread_detach_np ()
+{
+ if (ptw32_processInitialized)
+ {
+ pthread_t self = (pthread_t) pthread_getspecific (ptw32_selfThreadKey);
+
+ /*
+ * Detached threads have their resources automatically
+ * cleaned up upon exit (others must be 'joined').
+ */
+ if (self != NULL &&
+ self->detachState == PTHREAD_CREATE_DETACHED)
+ {
+ pthread_setspecific (ptw32_selfThreadKey, NULL);
+ ptw32_threadDestroy (self);
+ }
+ }
+
+ return TRUE;
+}
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