diff options
Diffstat (limited to 'libtdenetwork/libgpgme-copy/gpgme/w32-sema.c')
-rw-r--r-- | libtdenetwork/libgpgme-copy/gpgme/w32-sema.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/libtdenetwork/libgpgme-copy/gpgme/w32-sema.c b/libtdenetwork/libgpgme-copy/gpgme/w32-sema.c new file mode 100644 index 00000000..2b20cab3 --- /dev/null +++ b/libtdenetwork/libgpgme-copy/gpgme/w32-sema.c @@ -0,0 +1,115 @@ +/* w32-sema.c + Copyright (C) 2001 Werner Koch (dd9jn) + Copyright (C) 2001, 2002, 2004 g10 Code GmbH + + This file is part of GPGME. + + GPGME 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 2.1 of + the License, or (at your option) any later version. + + GPGME 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 program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + 02110-1301, USA. */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <errno.h> +#include <signal.h> +#include <fcntl.h> +#include <sys/time.h> +#include <sys/types.h> +#include <windows.h> +#include <io.h> + +#include "util.h" +#include "sema.h" +#include "debug.h" + +static void +sema_fatal (const char *text) +{ + fprintf (stderr, "sema.c: %s\n", text); + abort (); +} + + +static void +critsect_init (struct critsect_s *s) +{ + CRITICAL_SECTION *mp; + static CRITICAL_SECTION init_lock; + static int initialized; + + if (!initialized) { + /* The very first time we call this function, we assume that + only one thread is running, so that we can bootstrap the + semaphore code. */ + InitializeCriticalSection (&init_lock); + initialized = 1; + } + if (!s) + return; /* we just want to initialize ourself */ + + /* first test whether it is really not initialized */ + EnterCriticalSection (&init_lock); + if ( s->private ) { + LeaveCriticalSection (&init_lock); + return; + } + /* now init it */ + mp = malloc ( sizeof *mp ); + if (!mp) { + LeaveCriticalSection (&init_lock); + sema_fatal ("out of core while creating critical section lock"); + } + InitializeCriticalSection (mp); + s->private = mp; + LeaveCriticalSection (&init_lock); +} + +void +_gpgme_sema_subsystem_init () +{ + /* fixme: we should check that there is only one thread running */ + critsect_init (NULL); +} + + +void +_gpgme_sema_cs_enter ( struct critsect_s *s ) +{ + if (!s->private) + critsect_init (s); + EnterCriticalSection ( (CRITICAL_SECTION*)s->private ); +} + +void +_gpgme_sema_cs_leave (struct critsect_s *s) +{ + if (!s->private) + critsect_init (s); + LeaveCriticalSection ((CRITICAL_SECTION*)s->private); +} + +void +_gpgme_sema_cs_destroy ( struct critsect_s *s ) +{ + if (s && s->private) { + DeleteCriticalSection ((CRITICAL_SECTION*)s->private); + free (s->private); + s->private = NULL; + } +} |