diff options
Diffstat (limited to 'cpukit/posix/src/pbarrierinit.c')
| -rw-r--r-- | cpukit/posix/src/pbarrierinit.c | 40 |
1 files changed, 31 insertions, 9 deletions
diff --git a/cpukit/posix/src/pbarrierinit.c b/cpukit/posix/src/pbarrierinit.c index 408964cfed..816e695504 100644 --- a/cpukit/posix/src/pbarrierinit.c +++ b/cpukit/posix/src/pbarrierinit.c @@ -43,23 +43,37 @@ int pthread_barrier_init( unsigned int count ) { - POSIX_Barrier_Control *the_barrier; - CORE_barrier_Attributes the_attributes; - - + POSIX_Barrier_Control *the_barrier; + CORE_barrier_Attributes the_attributes; + pthread_barrierattr_t my_attr; + const pthread_barrierattr_t *the_attr; + + /* + * Error check parameters + */ if ( !barrier ) return EINVAL; if ( count == 0 ) return EINVAL; - if ( !attr ) - return EINVAL; + /* + * If the user passed in NULL, use the default attributes + */ + if ( attr ) { + the_attr = attr; + } else { + (void) pthread_barrierattr_init( &my_attr ); + the_attr = &my_attr; + } - if ( !attr->is_initialized ) + /* + * Now start error checking the attributes that we are going to use + */ + if ( !the_attr->is_initialized ) return EINVAL; - switch ( attr->process_shared ) { + switch ( the_attr->process_shared ) { case PTHREAD_PROCESS_PRIVATE: /* only supported values */ break; case PTHREAD_PROCESS_SHARED: @@ -67,9 +81,15 @@ int pthread_barrier_init( return EINVAL; } + /* + * Convert from POSIX attributes to Core Barrier attributes + */ the_attributes.discipline = CORE_BARRIER_AUTOMATIC_RELEASE; the_attributes.maximum_count = count; + /* + * Enter dispatching critical section to allocate and initialize barrier + */ _Thread_Disable_dispatch(); /* prevents deletion */ the_barrier = _POSIX_Barrier_Allocate(); @@ -87,8 +107,10 @@ int pthread_barrier_init( 0 ); + /* + * Exit the critical section and return the user an operational barrier + */ *barrier = the_barrier->Object.id; - _Thread_Enable_dispatch(); return 0; } |