1 files changed, 23 insertions, 0 deletions
diff --git a/libgomp/config/posix/omp-lock.h b/libgomp/config/posix/omp-lock.h
new file mode 100644
index 000000000..e51dc271f
--- /dev/null
+++ b/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