Rename thread-alive-p to thread-live-p

* doc/lispref/threads.texi (Basic Thread Functions): Use thread-live-p.

* etc/NEWS: 'thread-alive-p' has been renamed to 'thread-live-p'.

* src/thread.c (thread_live_p): Rename from thread_alive_p.  Adapt
all callees.
(Fthread_live_p): Rename from Fthread_alive_p.
(syms_of_threads): Make thread-alive-p an alias of thread-live-p.

* test/src/thread-tests.el (all): Replace `thread-alive-p' by
`thread-live-p'.
(threads-live): Rename from `threads-alive'.

4 files changed, 24 insertions, 16 deletions

diff --git a/doc/lispref/threads.texi b/doc/lispref/threads.texi
index f05af496188..ddeb2e923fc 100644
--- a/doc/lispref/threads.texi
+++ b/doc/lispref/threads.texi
@@ -97,7 +97,7 @@ Yield execution to the next runnable thread.
 Return the name of @var{thread}, as specified to @code{make-thread}.
 @end defun
 
-@defun thread-alive-p thread
+@defun thread-live-p thread
 Return @code{t} if @var{thread} is alive, or @code{nil} if it is not.
 A thread is alive as long as its function is still executing.
 @end defun
diff --git a/etc/NEWS b/etc/NEWS
index ffea247dd5a..f575d4dd005 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -112,6 +112,11 @@ option 'vc-hg-symbolic-revision-styles' to the value '("{rev}")'.
 Existing files "~/.emacs.d/shadows" and "~/.emacs.d/shadow_todo" must
 be removed prior using the changed 'shadow-*' commands.
 
++++
+** 'thread-alive-p' has been renamed to 'thread-live-p'.
+The old name is an alias of the new name.  Future Emacs version will
+obsolete it.
+
 
 * Lisp Changes in Emacs 26.2
 
diff --git a/src/thread.c b/src/thread.c
index 04c2808e5c4..9b450ee0a45 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -41,7 +41,7 @@ extern volatile int interrupt_input_blocked;
 
 /* m_specpdl is set when the thread is created and cleared when the
    thread dies.  */
-#define thread_alive_p(STATE) ((STATE)->m_specpdl != NULL)
+#define thread_live_p(STATE) ((STATE)->m_specpdl != NULL)
 
 
 
@@ -884,7 +884,7 @@ or `thread-join' in the target thread.  */)
   return Qnil;
 }
 
-DEFUN ("thread-alive-p", Fthread_alive_p, Sthread_alive_p, 1, 1, 0,
+DEFUN ("thread-live-p", Fthread_live_p, Sthread_live_p, 1, 1, 0,
        doc: /* Return t if THREAD is alive, or nil if it has exited.  */)
   (Lisp_Object thread)
 {
@@ -893,7 +893,7 @@ DEFUN ("thread-alive-p", Fthread_alive_p, Sthread_alive_p, 1, 1, 0,
   CHECK_THREAD (thread);
   tstate = XTHREAD (thread);
 
-  return thread_alive_p (tstate) ? Qt : Qnil;
+  return thread_live_p (tstate) ? Qt : Qnil;
 }
 
 DEFUN ("thread--blocker", Fthread_blocker, Sthread_blocker, 1, 1, 0,
@@ -923,7 +923,7 @@ thread_join_callback (void *arg)
   XSETTHREAD (thread, tstate);
   self->event_object = thread;
   self->wait_condvar = &tstate->thread_condvar;
-  while (thread_alive_p (tstate) && NILP (self->error_symbol))
+  while (thread_live_p (tstate) && NILP (self->error_symbol))
     sys_cond_wait (self->wait_condvar, &global_lock);
 
   self->wait_condvar = NULL;
@@ -946,7 +946,7 @@ It is an error for a thread to try to join itself.  */)
   if (tstate == current_thread)
     error ("Cannot join current thread");
 
-  if (thread_alive_p (tstate))
+  if (thread_live_p (tstate))
     flush_stack_call_func (thread_join_callback, tstate);
 
   return Qnil;
@@ -961,7 +961,7 @@ DEFUN ("all-threads", Fall_threads, Sall_threads, 0, 0, 0,
 
   for (iter = all_threads; iter; iter = iter->next_thread)
     {
-      if (thread_alive_p (iter))
+      if (thread_live_p (iter))
         {
           Lisp_Object thread;
 
@@ -1051,7 +1051,7 @@ syms_of_threads (void)
       defsubr (&Scurrent_thread);
       defsubr (&Sthread_name);
       defsubr (&Sthread_signal);
-      defsubr (&Sthread_alive_p);
+      defsubr (&Sthread_live_p);
       defsubr (&Sthread_join);
       defsubr (&Sthread_blocker);
       defsubr (&Sall_threads);
@@ -1069,6 +1069,9 @@ syms_of_threads (void)
       staticpro (&last_thread_error);
       last_thread_error = Qnil;
 
+      Fdefalias (intern_c_string ("thread-alive-p"),
+                 intern_c_string ("thread-live-p"), Qnil);
+
       Fprovide (intern_c_string ("threads"), Qnil);
     }
 
diff --git a/test/src/thread-tests.el b/test/src/thread-tests.el
index a00a9c84bd6..e721e0f9621 100644
--- a/test/src/thread-tests.el
+++ b/test/src/thread-tests.el
@@ -32,7 +32,7 @@
 (declare-function mutex-lock "thread.c" (mutex))
 (declare-function mutex-unlock "thread.c" (mutex))
 (declare-function thread--blocker "thread.c" (thread))
-(declare-function thread-alive-p "thread.c" (thread))
+(declare-function thread-live-p "thread.c" (thread))
 (declare-function thread-join "thread.c" (thread))
 (declare-function thread-last-error "thread.c" ())
 (declare-function thread-name "thread.c" (thread))
@@ -60,11 +60,11 @@
   (should
    (string= "hi bob" (thread-name (make-thread #'ignore "hi bob")))))
 
-(ert-deftest threads-alive ()
+(ert-deftest threads-live ()
   "Test for thread liveness."
   (skip-unless (featurep 'threads))
   (should
-   (thread-alive-p (make-thread #'ignore))))
+   (thread-live-p (make-thread #'ignore))))
 
 (ert-deftest threads-all-threads ()
   "Simple test for all-threads."
@@ -96,7 +96,7 @@
      (let ((thread (make-thread #'threads-test-thread1)))
        (thread-join thread)
        (and threads-test-global
-            (not (thread-alive-p thread)))))))
+            (not (thread-live-p thread)))))))
 
 (ert-deftest threads-join-self ()
   "Cannot `thread-join' the current thread."
@@ -271,7 +271,7 @@
   (let (th1 th2)
     (setq th1 (make-thread #'threads-call-error "call-error"))
     (should (threadp th1))
-    (while (thread-alive-p th1)
+    (while (thread-live-p th1)
       (thread-yield))
     (should (equal (thread-last-error)
                    '(error "Error is called")))
@@ -297,7 +297,7 @@
                           (while t (thread-yield))))))
     (thread-signal thread 'error nil)
     (sit-for 1)
-    (should-not (thread-alive-p thread))
+    (should-not (thread-live-p thread))
     (should (equal (thread-last-error) '(error)))))
 
 (defvar threads-condvar nil)
@@ -323,7 +323,7 @@
     (setq new-thread (make-thread #'threads-test-condvar-wait))
 
     ;; Make sure new-thread is alive.
-    (should (thread-alive-p new-thread))
+    (should (thread-live-p new-thread))
     (should (= (length (all-threads)) 2))
     ;; Wait for new-thread to become blocked on the condvar.
     (while (not (eq (thread--blocker new-thread) threads-condvar))
@@ -336,7 +336,7 @@
     (sleep-for 0.1)
     ;; Make sure the thread is still there.  This used to fail due to
     ;; a bug in thread.c:condition_wait_callback.
-    (should (thread-alive-p new-thread))
+    (should (thread-live-p new-thread))
     (should (= (length (all-threads)) 2))
     (should (eq (thread--blocker new-thread) threads-condvar))