all: experimental locked concurrency support, part 1 (#5637)

vlib/sync/pool.v

@@ -139,7 +139,7 @@ fn process_in_thread(mut pool PoolProcessor, task_id int) {
 		if pool.ntask >= ilen {
 			break
 		}
-		pool.ntask_mtx.lock()
+		pool.ntask_mtx.m_lock()
 		idx = pool.ntask
 		pool.ntask++
 		pool.ntask_mtx.unlock()

vlib/sync/sync_nix.c.v

@@ -17,7 +17,8 @@ pub fn new_mutex() &Mutex {
 	return m
 }
 
-pub fn (mut m Mutex) lock() {
+// m_lock(), for *manual* mutex handling, since `lock` is a keyword
+pub fn (mut m Mutex) m_lock() {
 	C.pthread_mutex_lock(&m.mutex)
 }
 

vlib/sync/sync_windows.c.v

@@ -43,7 +43,7 @@ pub fn new_mutex() &Mutex {
 	return sm
 }
 
-pub fn (mut m Mutex) lock() {
+pub fn (mut m Mutex) m_lock() {
 	// if mutex handle not initalized
 	if isnil(m.mx) {
 		m.mx = MHANDLE(C.CreateMutex(0, false, 0))

vlib/sync/waiter_nix.c.v

@@ -10,7 +10,7 @@ mut:
 }
 
 pub fn (mut w Waiter) wait() {
-	w.mx.lock()
+	w.mx.m_lock()
 }
 
 pub fn (mut w Waiter) stop() {

vlib/sync/waitgroup.v

@@ -30,7 +30,7 @@ pub fn new_waitgroup() &WaitGroup {
 // add panics if task count drops below zero.
 pub fn (mut wg WaitGroup) add(delta int) {
 	// protect task_count
-	wg.task_count_mutex.lock()
+	wg.task_count_mutex.m_lock()
 	defer {
 		wg.task_count_mutex.unlock()
 	}