i#58 MacOS: thread_signal()

Use SYS___pthread_kill as there is no SYS_tgkill on Mac.
Not finished, though: we need to map a thread id to a mach port.

SVN-Revision: 2452

core/unix/os.c

@@ -2503,13 +2503,21 @@ os_thread_yield()
 static bool
 thread_signal(process_id_t pid, thread_id_t tid, int signum)
 {
+#ifdef MACOS
+    /* FIXME i#58: this takes in a thread port.  Need to map thread id to port.
+     * Need to figure out whether we support raw Mach threads w/o pthread on top.
+     */
+    ASSERT_NOT_IMPLEMENTED(false);
+    return (dynamorio_syscall(SYS___pthread_kill, 2, tid, signum) == 0);
+#else
     /* FIXME: for non-NPTL use SYS_kill */
     /* Note that the pid is equivalent to the thread group id.
      * However, we can have threads sharing address space but not pid
      * (if created via CLONE_VM but not CLONE_THREAD), so make sure to
      * use the pid of the target thread, not our pid.
      */
     return (dynamorio_syscall(SYS_tgkill, 3, pid, tid, signum) == 0);
+#endif
 }
 
 void