aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.4.3/libgomp/config/posix/omp-lock.h
diff options
context:
space:
mode:
Diffstat (limited to 'gcc-4.4.3/libgomp/config/posix/omp-lock.h')
-rw-r--r--gcc-4.4.3/libgomp/config/posix/omp-lock.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/gcc-4.4.3/libgomp/config/posix/omp-lock.h b/gcc-4.4.3/libgomp/config/posix/omp-lock.h
new file mode 100644
index 000000000..e51dc271f
--- /dev/null
+++ b/gcc-4.4.3/libgomp/config/posix/omp-lock.h
@@ -0,0 +1,23 @@
+/* This header is used during the build process to find the size and
+ alignment of the public OpenMP locks, so that we can export data
+ structures without polluting the namespace.
+
+ In this default POSIX implementation, we used to map the two locks to the
+ same PTHREADS primitive, but for OpenMP 3.0 sem_t needs to be used
+ instead, as pthread_mutex_unlock should not be called by different
+ thread than the one that called pthread_mutex_lock. */
+
+#include <pthread.h>
+#include <semaphore.h>
+
+typedef pthread_mutex_t omp_lock_25_t;
+typedef struct { pthread_mutex_t lock; int count; } omp_nest_lock_25_t;
+#ifdef HAVE_BROKEN_POSIX_SEMAPHORES
+/* If we don't have working semaphores, we'll make all explicit tasks
+ tied to the creating thread. */
+typedef pthread_mutex_t omp_lock_t;
+typedef struct { pthread_mutex_t lock; int count; void *owner; } omp_nest_lock_t;
+#else
+typedef sem_t omp_lock_t;
+typedef struct { sem_t lock; int count; void *owner; } omp_nest_lock_t;
+#endif