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Diffstat (limited to 'pthreads/src/w32_CancelableWait.c')
| -rw-r--r-- | pthreads/src/w32_CancelableWait.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/pthreads/src/w32_CancelableWait.c b/pthreads/src/w32_CancelableWait.c deleted file mode 100644 index 070633e..0000000 --- a/pthreads/src/w32_CancelableWait.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * w32_CancelableWait.c - * - * Description: - * This translation unit implements miscellaneous thread functions. - * - * -------------------------------------------------------------------------- - * - * Pthreads-win32 - POSIX Threads Library for Win32 - * Copyright(C) 1998 John E. Bossom - * Copyright(C) 1999,2005 Pthreads-win32 contributors - * - * Contact Email: rpj@callisto.canberra.edu.au - * - * The current list of contributors is contained - * in the file CONTRIBUTORS included with the source - * code distribution. The list can also be seen at the - * following World Wide Web location: - * http://sources.redhat.com/pthreads-win32/contributors.html - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library in the file COPYING.LIB; - * 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" - - -static INLINE int -ptw32_cancelable_wait (HANDLE waitHandle, DWORD timeout) - /* - * ------------------------------------------------------------------- - * This provides an extra hook into the pthread_cancel - * mechanism that will allow you to wait on a Windows handle and make it a - * cancellation point. This function blocks until the given WIN32 handle is - * signaled or pthread_cancel has been called. It is implemented using - * WaitForMultipleObjects on 'waitHandle' and a manually reset WIN32 - * event used to implement pthread_cancel. - * - * Given this hook it would be possible to implement more of the cancellation - * points. - * ------------------------------------------------------------------- - */ -{ - int result; - pthread_t self; - ptw32_thread_t * sp; - HANDLE handles[2]; - DWORD nHandles = 1; - DWORD status; - - handles[0] = waitHandle; - - self = pthread_self(); - sp = (ptw32_thread_t *) self.p; - - if (sp != NULL) - { - /* - * Get cancelEvent handle - */ - if (sp->cancelState == PTHREAD_CANCEL_ENABLE) - { - - if ((handles[1] = sp->cancelEvent) != NULL) - { - nHandles++; - } - } - } - else - { - handles[1] = NULL; - } - - status = WaitForMultipleObjects (nHandles, handles, PTW32_FALSE, timeout); - - switch (status - WAIT_OBJECT_0) - { - case 0: - /* - * Got the handle. - * In the event that both handles are signalled, the smallest index - * value (us) is returned. As it has been arranged, this ensures that - * we don't drop a signal that we should act on (i.e. semaphore, - * mutex, or condition variable etc). - */ - result = 0; - break; - - case 1: - /* - * Got cancel request. - * In the event that both handles are signaled, the cancel will - * be ignored (see case 0 comment). - */ - ResetEvent (handles[1]); - - if (sp != NULL) - { - ptw32_mcs_local_node_t stateLock; - /* - * Should handle POSIX and implicit POSIX threads.. - * Make sure we haven't been async-canceled in the meantime. - */ - ptw32_mcs_lock_acquire (&sp->stateLock, &stateLock); - if (sp->state < PThreadStateCanceling) - { - sp->state = PThreadStateCanceling; - sp->cancelState = PTHREAD_CANCEL_DISABLE; - ptw32_mcs_lock_release (&stateLock); - ptw32_throw (PTW32_EPS_CANCEL); - - /* Never reached */ - } - ptw32_mcs_lock_release (&stateLock); - } - - /* Should never get to here. */ - result = EINVAL; - break; - - default: - if (status == WAIT_TIMEOUT) - { - result = ETIMEDOUT; - } - else - { - result = EINVAL; - } - break; - } - - return (result); - -} /* CancelableWait */ - -int -pthreadCancelableWait (HANDLE waitHandle) -{ - return (ptw32_cancelable_wait (waitHandle, INFINITE)); -} - -int -pthreadCancelableTimedWait (HANDLE waitHandle, DWORD timeout) -{ - return (ptw32_cancelable_wait (waitHandle, timeout)); -} |