Call GC_thr_init only once

(code refactoring)

GC_thr_init() is now called only if GC_thr_initialized;
"if(GC_thr_initialized)return" statement is removed from GC_thr_init.

* misc.c [GC_PTHREADS || GC_WIN32_THREADS] (GC_init): Do not call
GC_thr_init() if GC_thr_initialized.
* pthread_support.c (GC_thr_init): Remove return if GC_thr_initialized;
add GC_ASSERT that GC_thr_initialized is false.
* win32_threads.c (GC_thr_init): Likewise.

1 files changed, 1 insertions, 1 deletions

diff --git a/misc.c b/misc.c
index 1d35a19e..47aa6d56 100644
--- a/misc.c
+++ b/misc.c
@@ -1304,7 +1304,7 @@ GC_API void GC_CALL GC_init(void)
 #   endif
     GC_is_initialized = TRUE;
 #   if defined(GC_PTHREADS) || defined(GC_WIN32_THREADS)
-        GC_thr_init();
+        if (!GC_thr_initialized) GC_thr_init();
 #       ifdef PARALLEL_MARK
           /* Actually start helper threads.     */
 #         if defined(GC_ASSERTIONS) && defined(GC_ALWAYS_MULTITHREADED)