148 lines
2.6 KiB
C
148 lines
2.6 KiB
C
/*
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* portability.c: Miscellaneous stuff needed for porting to other platforms
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*
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* Copyright (C) 2003, Olaf Kirch <okir@lst.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "internal.h"
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#include <assert.h>
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#include <stdlib.h>
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#if defined(HAVE_PTHREAD)
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#include <pthread.h>
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sc_mutex_t *
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sc_mutex_new(void)
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{
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pthread_mutex_t *mutex;
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mutex = (pthread_mutex_t *) malloc(sizeof(*mutex));
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assert(mutex);
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pthread_mutex_init(mutex, NULL);
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return (sc_mutex_t *) mutex;
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}
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void
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sc_mutex_lock(sc_mutex_t *p)
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{
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pthread_mutex_lock((pthread_mutex_t *) p);
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}
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void
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sc_mutex_unlock(sc_mutex_t *p)
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{
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pthread_mutex_unlock((pthread_mutex_t *) p);
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}
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void
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sc_mutex_free(sc_mutex_t *p)
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{
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pthread_mutex_destroy((pthread_mutex_t *) p);
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free(p);
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}
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#elif defined(_WIN32)
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sc_mutex_t *
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sc_mutex_new(void)
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{
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CRITICAL_SECTION *mutex;
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mutex = (CRITICAL_SECTION *) malloc(sizeof(*mutex));
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assert(mutex);
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InitializeCriticalSection(mutex);
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return (sc_mutex_t *) mutex;
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}
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void
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sc_mutex_lock(sc_mutex_t *p)
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{
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EnterCriticalSection((CRITICAL_SECTION *) p);
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}
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void
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sc_mutex_unlock(sc_mutex_t *p)
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{
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LeaveCriticalSection((CRITICAL_SECTION *) p);
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}
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void
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sc_mutex_free(sc_mutex_t *p)
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{
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DeleteCriticalSection((CRITICAL_SECTION *) p);
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free(p);
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}
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#else
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sc_mutex_t *
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sc_mutex_new(void)
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{
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return (sc_mutex_t *) NULL;
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}
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void
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sc_mutex_lock(sc_mutex_t *p)
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{
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/* NOP */
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}
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void
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sc_mutex_unlock(sc_mutex_t *p)
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{
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/* NOP */
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}
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void
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sc_mutex_free(sc_mutex_t *p)
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{
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/* NOP */
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}
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#endif
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#ifndef _WIN32
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sc_timestamp_t sc_current_time(void)
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{
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struct timeval tv;
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struct timezone tz;
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sc_timestamp_t curr;
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if (gettimeofday(&tv, &tz) != 0)
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return 0;
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curr = tv.tv_sec;
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curr *= 1000;
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curr += tv.tv_usec / 1000;
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return curr;
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}
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#else
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sc_timestamp_t sc_current_time(void)
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{
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struct _timeb time_buf;
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sc_timestamp_t curr;
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_ftime(&time_buf);
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curr = time_buf.time;
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curr *= 1000;
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curr += time_buf.millitm;
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return curr;
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}
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#endif
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