core/rthreads.h: add new option tls_threads_mode = 2

- add global handling of thread-locals with
  tls_threads_mode = 2
- this will run a pthread_atfork handler to reset
  all thread-locals to 0x0
- alternative solution to running functions
  in thread executors
- requires tls.so to be loaded to be effective

src/core/rthreads.h

@@ -40,7 +40,7 @@ static void *run_threadP(_thread_proto fn, void *arg)
 	pthread_t tid;
 	void *ret = NULL;
 
-	if(likely(ksr_tls_threads_mode == 0
+	if(likely(ksr_tls_threads_mode == 0 || ksr_tls_threads_mode == 2
 			   || (ksr_tls_threads_mode == 1 && process_no > 0))) {
 		return fn(arg);
 	}
@@ -77,7 +77,7 @@ static void *run_threadPI(_thread_protoPI fn, void *arg1, int arg2)
 	pthread_t tid;
 	void *ret = NULL;
 
-	if(likely(ksr_tls_threads_mode == 0
+	if(likely(ksr_tls_threads_mode == 0 || ksr_tls_threads_mode == 2
 			   || (ksr_tls_threads_mode == 1 && process_no > 0))) {
 		return fn(arg1, arg2);
 	}
@@ -113,7 +113,7 @@ static void run_threadV(_thread_protoV fn)
 #ifdef USE_TLS
 	pthread_t tid;
 
-	if(likely(ksr_tls_threads_mode == 0
+	if(likely(ksr_tls_threads_mode == 0 || ksr_tls_threads_mode == 2
 			   || (ksr_tls_threads_mode == 1 && process_no > 0))) {
 		fn();
 		return;
@@ -152,7 +152,7 @@ static int run_thread4PP(_thread_proto4PP fn, void *arg1, void *arg2)
 	pthread_t tid;
 	int ret = 0;
 
-	if(likely(ksr_tls_threads_mode == 0
+	if(likely(ksr_tls_threads_mode == 0 || ksr_tls_threads_mode == 2
 			   || (ksr_tls_threads_mode == 1 && process_no > 0))) {
 		return fn(arg1, arg2);
 	}
@@ -188,7 +188,7 @@ static void run_thread0P(_thread_proto0P fn, void *arg1)
 #ifdef USE_TLS
 	pthread_t tid;
 
-	if(likely(ksr_tls_threads_mode == 0
+	if(likely(ksr_tls_threads_mode == 0 || ksr_tls_threads_mode == 2
 			   || (ksr_tls_threads_mode == 1 && process_no > 0))) {
 		fn(arg1);
 		return;
@@ -240,7 +240,7 @@ static int run_thread4P5I2P2(_thread_proto4P5I2P2 fn, void *arg1, void *arg2,
 	pthread_t tid;
 	int ret = 0;
 
-	if(likely(ksr_tls_threads_mode == 0
+	if(likely(ksr_tls_threads_mode == 0 || ksr_tls_threads_mode == 2
 			   || (ksr_tls_threads_mode == 1 && process_no > 0))) {
 		return fn(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9);
 	}
@@ -278,7 +278,7 @@ static int run_thread4L(_thread_proto4L fn, long arg1)
 	pthread_t tid;
 	int ret = 0;
 
-	if(likely(ksr_tls_threads_mode == 0
+	if(likely(ksr_tls_threads_mode == 0 || ksr_tls_threads_mode == 2
 			   || (ksr_tls_threads_mode == 1 && process_no > 0))) {
 		return fn(arg1);
 	}