diff options
Diffstat (limited to '3rdparty/plibsys/src/pmutex-amiga.c')
-rw-r--r-- | 3rdparty/plibsys/src/pmutex-amiga.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/3rdparty/plibsys/src/pmutex-amiga.c b/3rdparty/plibsys/src/pmutex-amiga.c new file mode 100644 index 0000000..0c1216a --- /dev/null +++ b/3rdparty/plibsys/src/pmutex-amiga.c @@ -0,0 +1,101 @@ +/* + * The MIT License + * + * Copyright (C) 2017 Alexander Saprykin <saprykin.spb@gmail.com> + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * 'Software'), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include "pmem.h" +#include "pmutex.h" + +#include <stdlib.h> + +#include <exec/exectags.h> +#include <proto/exec.h> + +typedef APTR mutex_hdl; + +struct PMutex_ { + mutex_hdl hdl; +}; + +P_LIB_API PMutex * +p_mutex_new (void) +{ + PMutex *ret; + + if (P_UNLIKELY ((ret = p_malloc0 (sizeof (PMutex))) == NULL)) { + P_ERROR ("PMutex::p_mutex_new: failed to allocate memory"); + return NULL; + } + + ret->hdl = IExec->AllocSysObjectTags (ASOT_MUTEX, ASOMUTEX_Recursive, TRUE, TAG_END); + + if (P_UNLIKELY (ret->hdl == NULL)) { + P_ERROR ("PMutex::p_mutex_new: AllocSysObjectTags() failed"); + p_free (ret); + return NULL; + } + + return ret; +} + +P_LIB_API pboolean +p_mutex_lock (PMutex *mutex) +{ + if (P_UNLIKELY (mutex == NULL)) + return FALSE; + + IExec->MutexObtain (mutex->hdl); + + return TRUE; +} + +P_LIB_API pboolean +p_mutex_trylock (PMutex *mutex) +{ + if (P_UNLIKELY (mutex == NULL)) + return FALSE; + + return IExec->MutexAttempt (mutex->hdl); +} + +P_LIB_API pboolean +p_mutex_unlock (PMutex *mutex) +{ + if (P_UNLIKELY (mutex == NULL)) + return FALSE; + + IExec->MutexRelease (mutex->hdl); + + return TRUE; +} + +P_LIB_API void +p_mutex_free (PMutex *mutex) +{ + if (P_UNLIKELY (mutex == NULL)) + return; + + IExec->FreeSysObject (ASOT_MUTEX, mutex->hdl); + + p_free (mutex); +} |