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Diffstat (limited to 'cpukit/posix/src/condinit.c')
-rw-r--r-- | cpukit/posix/src/condinit.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/cpukit/posix/src/condinit.c b/cpukit/posix/src/condinit.c new file mode 100644 index 0000000000..8bdbe2be00 --- /dev/null +++ b/cpukit/posix/src/condinit.c @@ -0,0 +1,84 @@ +/* + * COPYRIGHT (c) 1989-2007. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <pthread.h> +#include <errno.h> + +#include <rtems/system.h> +#include <rtems/score/object.h> +#include <rtems/score/states.h> +#include <rtems/score/watchdog.h> +#include <rtems/posix/cond.h> +#include <rtems/posix/time.h> +#include <rtems/posix/mutex.h> + +/*PAGE + * + * 11.4.2 Initializing and Destroying a Condition Variable, + * P1003.1c/Draft 10, p. 87 + */ + +int pthread_cond_init( + pthread_cond_t *cond, + const pthread_condattr_t *attr +) +{ + POSIX_Condition_variables_Control *the_cond; + const pthread_condattr_t *the_attr; + + if ( attr ) the_attr = attr; + else the_attr = &_POSIX_Condition_variables_Default_attributes; + + /* + * Be careful about attributes when global!!! + */ + if ( the_attr->process_shared == PTHREAD_PROCESS_SHARED ) + return EINVAL; + + if ( !the_attr->is_initialized ) + return EINVAL; + + _Thread_Disable_dispatch(); + + the_cond = _POSIX_Condition_variables_Allocate(); + + if ( !the_cond ) { + _Thread_Enable_dispatch(); + return ENOMEM; + } + + the_cond->process_shared = the_attr->process_shared; + + the_cond->Mutex = POSIX_CONDITION_VARIABLES_NO_MUTEX; + + _Thread_queue_Initialize( + &the_cond->Wait_queue, + THREAD_QUEUE_DISCIPLINE_FIFO, + STATES_WAITING_FOR_CONDITION_VARIABLE | STATES_INTERRUPTIBLE_BY_SIGNAL, + ETIMEDOUT + ); + + _Objects_Open_u32( + &_POSIX_Condition_variables_Information, + &the_cond->Object, + 0 + ); + + *cond = the_cond->Object.id; + + _Thread_Enable_dispatch(); + + return 0; +} |