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689578a099
Call pthread_mutex_destroy() on not used mutex. Changed comments in .h and .c files from // -> /* */ Added detection of mutex on which one didn't call pthread_mutex_destroy() Fixed bug in create_tmp_field() which causes a memory overrun in queries that uses "ORDER BY constant_expression" Added optimisation for ORDER BY NULL
84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*
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* Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
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* All rights reserved.
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*
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* Modified and extended by Antony T Curtis <antony.curtis@olcs.net>
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* for use with OS/2.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by John Birrell.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <stdlib.h>
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#include <errno.h>
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#ifdef _THREAD_SAFE
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int
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pthread_mutex_init(pthread_mutex_t * mutex,
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const pthread_mutexattr_t * mutex_attr)
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{
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(void) DosCreateMutexSem(NULL,mutex,0,0);
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return (0); /* Return the completion status: */
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}
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int
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pthread_mutex_destroy(pthread_mutex_t * mutex)
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{
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APIRET rc;
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do
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{
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rc = DosCloseMutexSem(*mutex);
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if (rc == 301) DosReleaseMutexSem(*mutex);
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} while (rc == 301);
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*mutex = 0;
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return (0); /* Return the completion status: */
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}
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int
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pthread_mutex_lock(pthread_mutex_t * mutex)
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{
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APIRET rc;
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rc = DosRequestMutexSem(*mutex,SEM_INDEFINITE_WAIT);
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if (rc)
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return(EINVAL);
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return (0); /* Return the completion status: */
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}
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int
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pthread_mutex_unlock(pthread_mutex_t * mutex)
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{
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(void) DosReleaseMutexSem(*mutex);
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return (0); /* Return the completion status: */
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}
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#endif
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