1.3 API CHANGE: Add support for naming threads.

--HG--
extra : rebase_source : ae532d4b4d68ef86de0fc2cb6794a622e0841bce

src/thread/pthread/SDL_systhread.c

@@ -21,6 +21,11 @@
 #include "SDL_config.h"
 
 #include <pthread.h>
+
+#if HAVE_PTHREAD_NP_H
+#include <pthread_np.h>
+#endif
+
 #include <signal.h>
 #ifdef __LINUX__
 #include <sys/time.h>
@@ -28,6 +33,7 @@
 #include <sys/syscall.h>
 #endif
 
+#include "SDL_platform.h"
 #include "SDL_thread.h"
 #include "../SDL_thread_c.h"
 #include "../SDL_systhread.h"
@@ -67,12 +73,27 @@ SDL_SYS_CreateThread(SDL_Thread * thread, void *args)
     return (0);
 }
 
+/* make pthread_setname_np() a weak reference even without SDK support. */
+#if __MACOSX__ && (MAC_OS_X_VERSION_MAX_ALLOWED < 1060)
+int pthread_setname_np(const char*) __attribute__((weak_import,visibility("default")));
+#elif __IPHONEOS__ && (__IPHONE_OS_VERSION_MAX_ALLOWED < 30200)
+int pthread_setname_np(const char*) __attribute__((weak_import));
+#endif
+
 void
-SDL_SYS_SetupThread(void)
+SDL_SYS_SetupThread(const char *name)
 {
     int i;
     sigset_t mask;
 
+#if __MACOSX__ || __IPHONEOS__
+    if (pthread_setname_np != NULL) { pthread_setname_np(name); }
+#elif HAVE_PTHREAD_SETNAME_NP
+    pthread_setname_np(pthread_self(), name);
+#elif HAVE_PTHREAD_SET_NAME_NP
+    pthread_set_name_np(pthread_self(), name);
+#endif
+
     /* Mask asynchronous signals for this thread */
     sigemptyset(&mask);
     for (i = 0; sig_list[i]; ++i) {