Add thread sleep function

include/bh/thread.h

@@ -60,6 +60,8 @@ void bh_task_reuse(bh_task_t *task,
 
 int bh_task_done(bh_task_t *task);
 
+int bh_thread_sleep(unsigned long timeout);
+
 int bh_thread_join(bh_thread_t *thread);
 
 int bh_thread_detach(bh_thread_t *thread);

src/thread_null.c

@@ -41,6 +41,11 @@ int bh_thread_init(bh_thread_t *thread,
     return BH_NO_IMPL;
 }
 
+int bh_thread_sleep(unsigned long timeout)
+{
+    return BH_NO_IMPL;
+}
+
 /**
  * Joins the \a thread.
  *

src/thread_posix.c

@@ -55,6 +55,19 @@ bh_thread_t *bh_thread_new(bh_task_t *task)
     return result;
 }
 
+int bh_thread_sleep(unsigned long timeout)
+{
+    struct timespec ts;
+
+    ts.tv_sec = timeout / 1000;
+    ts.tv_nsec = (timeout - ts.tv_sec * 1000) * 1000000;
+
+    if (nanosleep(&ts, NULL))
+        return BH_ERROR;
+
+    return BH_OK;
+}
+
 int bh_thread_join(bh_thread_t *thread)
 {
     /* Join the thread */

src/thread_win.c

@@ -79,6 +79,12 @@ bh_thread_t *bh_thread_new_base(bh_task_t *task,
     return result;
 }
 
+int bh_thread_sleep(unsigned long timeout)
+{
+    Sleep(timeout);
+    return BH_OK;
+}
+
 int bh_thread_join(bh_thread_t *thread)
 {
     /* Join the thread */