libgo: Always initialize semaphores.

2011-04-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	PR go/48222
	* runtime/malloc.goc (runtime_mallocinit): Call
	runtime_Mprof_Init, runtime_initfintab.
	* runtime/cpuprof.c (runtime_cpuprofinit): New function.
	* runtime/runtime.h (runtime_cpuprofinit): Declare it.
	* runtime/go-main.c (main): Use it.

From-SVN: r171960

libgo/runtime/cpuprof.c

@@ -114,6 +114,12 @@ static void add(Profile*, uintptr*, int32);
 static bool evict(Profile*, Entry*);
 static bool flushlog(Profile*);
 
+void
+runtime_cpuprofinit(void)
+{
+	runtime_initlock(&lk);
+}
+
 // LostProfileData is a no-op function used in profiles
 // to mark the number of profiling stack traces that were
 // discarded due to slow data writers.

libgo/runtime/go-main.c

@@ -48,6 +48,7 @@ main (int argc, char **argv)
   struct __go_string *values;
 
   runtime_mallocinit ();
+  runtime_cpuprofinit ();
   __go_gc_goroutine_init (&argc);
 
   Args.__count = argc;

libgo/runtime/malloc.goc

@@ -350,6 +350,12 @@ runtime_mallocinit(void)
 	runtime_MHeap_Init(&runtime_mheap, runtime_SysAlloc);
 	m->mcache = runtime_allocmcache();
 
+	// Initialize malloc profiling.
+	runtime_Mprof_Init();
+
+	// Initialize finalizer.
+	runtime_initfintab();
+
 	// See if it works.
 	runtime_free(runtime_malloc(1));
 }

libgo/runtime/runtime.h

@@ -189,6 +189,7 @@ void	runtime_walkfintab(void (*fn)(void*), void (*scan)(byte *, int64));
 #define runtime_casp(pval, old, new) __sync_bool_compare_and_swap (pval, old, new)
 
 void	runtime_sigprof(uint8 *pc, uint8 *sp, uint8 *lr);
+void	runtime_cpuprofinit(void);
 void	runtime_resetcpuprofiler(int32);
 void	runtime_setcpuprofilerate(void(*)(uintptr*, int32), int32);