6cee0a4f3f
* configure.ac: Add automake conditional HAVE_DOSISH_SYSTEM. gpgme/ 2002-03-18 Marcus Brinkmann <marcus@g10code.de> * Makefile.am (system_components): New variable, set depending on HAVE_DOSISH_SYSTEM. (libgpgme_la_SOURCES): Use system_components. Remove `syshdr.h'. * syshdr.h: File removed. * posix-io.c: Remove !HAVE_DOSISH_SYSTEM safeguard. Clean up source. * posix-sema.c: Likewise. * posix-util.c: Likewise. * w32-io.c: Remove HAVE_DOSISH_SYSTEM safeguard. * w32-sema.c: Likewise. * w32-util.c: Likewise. * posix-io.c: Include `unistd.h', do not include `syshdr.h'. * posix-sema.c: Likewise. * w32-io.c: Include `io.h', do not include `syshdr.h' * w32-sema.c: Likewise. * w32-util.c: Likewise. * data.c: Do not include `syshdr.h'. * wait.c: Likewise. * wait.h: Code cleanup. * mutex.h: New file. * posix-sema.c: Implement.
115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/* w32-sema.c
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* Copyright (C) 2001 Werner Koch (dd9jn)
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* Copyright (C) 2001, 2002 g10 Code GmbH
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*
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* This file is part of GPGME.
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*
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* GPGME is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GPGME 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; 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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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <errno.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <windows.h>
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#include <io.h>
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#include "util.h"
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#include "sema.h"
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static void
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sema_fatal (const char *text)
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{
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fprintf (stderr, "sema.c: %s\n", text);
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abort ();
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}
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static void
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critsect_init (struct critsect_s *s)
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{
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CRITICAL_SECTION *mp;
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static CRITICAL_SECTION init_lock;
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static int initialized;
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if (!initialized) {
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/* the very first time we call this function, we assume that only
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* one thread is running, so that we can bootstrap the semaphore code
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*/
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InitializeCriticalSection (&init_lock);
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initialized = 1;
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}
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if (!s)
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return; /* we just want to initialize ourself */
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/* first test whether it is really not initialized */
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EnterCriticalSection (&init_lock);
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if ( s->private ) {
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LeaveCriticalSection (&init_lock);
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return;
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}
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/* now init it */
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mp = xtrymalloc ( sizeof *mp );
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if (!mp) {
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LeaveCriticalSection (&init_lock);
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sema_fatal ("out of core while creating critical section lock");
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}
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InitializeCriticalSection (mp);
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s->private = mp;
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LeaveCriticalSection (&init_lock);
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}
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void
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_gpgme_sema_subsystem_init ()
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{
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/* fixme: we should check that there is only one thread running */
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critsect_init (NULL);
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}
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void
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_gpgme_sema_cs_enter ( struct critsect_s *s )
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{
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if (!s->private)
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critsect_init (s);
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EnterCriticalSection ( (CRITICAL_SECTION*)s->private );
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}
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void
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_gpgme_sema_cs_leave (struct critsect_s *s)
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{
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if (!s->private)
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critsect_init (s);
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LeaveCriticalSection ( (CRITICAL_SECTION*)s->private );
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}
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void
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_gpgme_sema_cs_destroy ( struct critsect_s *s )
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{
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if (s && s->private) {
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DeleteCriticalSection ((CRITICAL_SECTION*)s->private);
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xfree (s->private);
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s->private = NULL;
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}
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}
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