Fix BSD and macOS builds w.r.t. pthread_setname_np (bug#38632)

pthread_setname_np takes only a single argument on BSD and macOS,
and affects the current thread only.

* configure.ac: Add check for single-argument pthread_setname_np
* src/systhread.c (sys_thread_set_name): New (w32 and pthread versions).
(sys_thread_create): Remove name argument and name-setting.
(w32_beginthread_wrapper): Remove name-setting.
* src/systhread.h (sys_thread_create, sys_thread_set_name):
Update prototypes.
* src/thread.c (run_thread): Call sys_thread_set_name.
(Fmake_thread): Adapt call to sys_thread_create.
* src/thread.h (struct thread_state): Adjust comment.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/thread.c b/src/thread.c
index f7e39dc4273..c7fe0614269 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -725,6 +725,9 @@ run_thread (void *state)
   self->m_stack_bottom = self->stack_top = (char *) &stack_pos;
   self->thread_id = sys_thread_self ();
 
+  if (self->thread_name)
+    sys_thread_set_name (self->thread_name);
+
   acquire_global_lock (self);
 
   /* Put a dummy catcher at top-level so that handlerlist is never NULL.
@@ -832,7 +835,7 @@ If NAME is given, it must be a string; it names the new thread.  */)
   else
     new_thread->thread_name = NULL;
   sys_thread_t thr;
-  if (! sys_thread_create (&thr, c_name, run_thread, new_thread))
+  if (! sys_thread_create (&thr, run_thread, new_thread))
     {
       /* Restore the previous situation.  */
       all_threads = all_threads->next_thread;