X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fdarwin-os.c;h=fbbae266e20a2cd7099e62a21200290741f6a9a7;hb=bb9b382751d808c76592ce2484c33f8447db6568;hp=5e6642fbde9d46d2735dc4dfc86e3aaafc5000f7;hpb=e05f13837227104f8fa3441ff1085982fab20e2c;p=sbcl.git

diff --git a/src/runtime/darwin-os.c b/src/runtime/darwin-os.c
index 5e6642f..fbbae26 100644
--- a/src/runtime/darwin-os.c
+++ b/src/runtime/darwin-os.c
@@ -21,6 +21,7 @@
 #include <signal.h>
 #include <limits.h>
 #include <mach-o/dyld.h>
+#include <stdio.h>
 #include <errno.h>
 #include <dlfcn.h>
 
@@ -163,6 +164,66 @@ mach_fork() {
         return pid;
     }
 }
+#endif
 
+void darwin_init(void)
+{
+#ifdef LISP_FEATURE_MACH_EXCEPTION_HANDLER
+    setup_mach_exception_handling_thread();
 #endif
+}
+
+
+#ifdef LISP_FEATURE_SB_THREAD
+
+inline void
+os_sem_init(os_sem_t *sem, unsigned int value)
+{
+    if (KERN_SUCCESS!=semaphore_create(current_mach_task, sem, SYNC_POLICY_FIFO, (int)value))
+        lose("os_sem_init(%p): %s", sem, strerror(errno));
+}
+
+inline void
+os_sem_wait(os_sem_t *sem, char *what)
+{
+    kern_return_t ret;
+  restart:
+    FSHOW((stderr, "%s: os_sem_wait(%p)\n", what, sem));
+    ret = semaphore_wait(*sem);
+    FSHOW((stderr, "%s: os_sem_wait(%p) => %s\n", what, sem,
+           KERN_SUCCESS==ret ? "ok" : strerror(errno)));
+    switch (ret) {
+    case KERN_SUCCESS:
+        return;
+        /* It is unclear just when we can get this, but a sufficiently
+         * long wait seems to do that, at least sometimes.
+         *
+         * However, a wait that long is definitely abnormal for the
+         * GC, so we complain before retrying.
+         */
+    case KERN_OPERATION_TIMED_OUT:
+        fprintf(stderr, "%s: os_sem_wait(%p): %s", what, sem, strerror(errno));
+        /* This is analogous to POSIX EINTR. */
+    case KERN_ABORTED:
+        goto restart;
+    default:
+        lose("%s: os_sem_wait(%p): %lu, %s", what, sem, ret, strerror(errno));
+    }
+}
+
+void
+os_sem_post(os_sem_t *sem, char *what)
+{
+    if (KERN_SUCCESS!=semaphore_signal(*sem))
+        lose("%s: os_sem_post(%p): %s", what, sem, strerror(errno));
+    FSHOW((stderr, "%s: os_sem_post(%p) ok\n", what, sem));
+}
+
+void
+os_sem_destroy(os_sem_t *sem)
+{
+    if (-1==semaphore_destroy(current_mach_task, *sem))
+        lose("os_sem_destroy(%p): %s", sem, strerror(errno));
+}
 
+#endif