diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/mutex_init.c')
-rw-r--r-- | nptl/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/mutex_init.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/mutex_init.c b/nptl/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/mutex_init.c new file mode 100644 index 0000000000..6b2977cc00 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/mutex_init.c @@ -0,0 +1,63 @@ +/* Copyright (C) 2008 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008. + + The GNU C Library 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. + + The GNU C Library 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 the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <inline-syscall.h> +#include <pthreadP.h> +#include <synch.h> +#include <errno.h> + +DECLARE_INLINE_SYSCALL (int, lwp_mutex_register, mutex_t *lp); + + +int mutex_init (mutex, type, arg) + mutex_t *mutex; + int type; + void * arg; +{ + // TODO: check type + + /* USYNC_PROCESS_ROBUST must be mapped to LOCK_SHARED | LOCK_ROBUST. */ + if (type & USYNC_PROCESS_ROBUST) + type = (type & ~USYNC_PROCESS_ROBUST) | LOCK_SHARED | LOCK_ROBUST; + + if (type & LOCK_ROBUST) + { + if ((mutex->mutex_type & LOCK_INITED)) + return EBUSY; + } + else + { + memset (mutex, 0, sizeof(mutex_t)); + } + mutex->mutex_type = type; + mutex->mutex_flag = LOCK_INITED; + mutex->mutex_magic = MUTEX_MAGIC; + mutex->mutex_ceiling = (int)arg; + mutex->mutex_cond_waiters = 0; + + /* Register robust shared lock. */ + if ((type & (LOCK_ROBUST | LOCK_SHARED)) == (LOCK_ROBUST | LOCK_SHARED)) + { + int errval = INLINE_SYSCALL (lwp_mutex_register, 1, mutex); + if (errval != 0) + return errval; + } + + return 0; +} |