base layer, mostly stolen

2026-04-04 09:15:37 -05:00
commit 42085666e9
18 changed files with 2528 additions and 0 deletions
@@ -0,0 +1,49 @@
+/** Pthread-barrier implementation for macOS */
+#ifndef PTHREAD_BARRIER_H
+#define PTHREAD_BARRIER_H
+
+#include <pthread.h>
+
+#ifdef __APPLE__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef PTHREAD_BARRIER_SERIAL_THREAD
+# define PTHREAD_BARRIER_SERIAL_THREAD -1
+#endif
+
+typedef pthread_mutexattr_t pthread_barrierattr_t;
+
+/* structure for internal use that should be considered opaque */
+typedef struct {
+	pthread_mutex_t mutex;
+	pthread_cond_t cond;
+	unsigned count;
+	unsigned left;
+	unsigned round;
+} pthread_barrier_t;
+
+int pthread_barrier_init(pthread_barrier_t *__restrict barrier,
+                         const pthread_barrierattr_t * __restrict attr,
+                         unsigned count);
+int pthread_barrier_destroy(pthread_barrier_t *barrier);
+
+int pthread_barrier_wait(pthread_barrier_t *barrier);
+
+int pthread_barrierattr_init(pthread_barrierattr_t *attr);
+int pthread_barrierattr_destroy(pthread_barrierattr_t *attr);
+int pthread_barrierattr_getpshared(const pthread_barrierattr_t *__restrict attr,
+                                   int *__restrict pshared);
+int pthread_barrierattr_setpshared(pthread_barrierattr_t *attr,
+                                   int pshared);
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif /* __APPLE__ */
+
+#endif /* PTHREAD_BARRIER_H */