[Emacs-diffs] trunk r116873: Speed up thread startup on MS-Windows.

[Eli Zaretskii]

------------------------------------------------------------
revno: 116873
revision-id: address@hidden
parent: address@hidden
committer: Eli Zaretskii <address@hidden>
branch nick: trunk
timestamp: Tue 2014-03-25 18:00:37 +0200
message:
  Speed up thread startup on MS-Windows.
  
   src/w32.c (w32_delayed_load): Call DisableThreadLibraryCalls on the
   DLL handle, to speed up thread startup.
modified:
  src/ChangeLog                  changelog-20091113204419-o5vbwnq5f7feedwu-1438
  src/w32.c                      w32.c-20091113204419-o5vbwnq5f7feedwu-808

=== modified file 'src/ChangeLog'
--- a/src/ChangeLog     2014-03-25 14:43:26 +0000
+++ b/src/ChangeLog     2014-03-25 16:00:37 +0000
@@ -1,3 +1,8 @@
+2014-03-25  Eli Zaretskii  <address@hidden>
+
+       * w32.c (w32_delayed_load): Call DisableThreadLibraryCalls on the
+       DLL handle, to speed up thread startup.
+
 2014-03-25  Paul Eggert  <address@hidden>
 
        Handle sigmask better with nested signal handlers  (Bug#15561).

=== modified file 'src/w32.c'
--- a/src/w32.c 2014-03-10 17:31:17 +0000
+++ b/src/w32.c 2014-03-25 16:00:37 +0000
@@ -8702,6 +8702,13 @@
                               /* Possibly truncated */
                               ? make_specified_string (name, -1, len, 1)
                               : Qnil);
+               /* This prevents thread start and end notifications
+                  from being sent to the DLL, for every thread we
+                  start.  We don't need those notifications because
+                  threads we create never use any of these DLLs, only
+                  the main thread uses them.  This is supposed to
+                  speed up thread creation.  */
+               DisableThreadLibraryCalls (dll_handle);
                break;
              }
          }