Optimize memory allocation

A number of memory allocation optimizations have been implemented. Most
optimizations reduce contention caused by synchronization between
threads during allocation and deallocation of memory. Most notably:
* Synchronization of memory management in scheduler specific allocator
  instances has been rewritten to use lock-free synchronization.
* Synchronization of memory management in scheduler specific
  pre-allocators has been rewritten to use lock-free synchronization.
* The 'mseg_alloc' memory segment allocator now use scheduler specific
  instances instead of one instance. Apart from reducing contention
  this also ensures that memory allocators always create memory
  segments on the local NUMA node on a NUMA system.

1 files changed, 8 insertions, 3 deletions

diff --git a/erts/emulator/sys/vxworks/sys.c b/erts/emulator/sys/vxworks/sys.c
index c6e7b65f32..08c4f3f4e5 100644
--- a/erts/emulator/sys/vxworks/sys.c
+++ b/erts/emulator/sys/vxworks/sys.c
@@ -1,7 +1,7 @@
 /*
  * %CopyrightBegin%
  *
- * Copyright Ericsson AB 1997-2010. All Rights Reserved.
+ * Copyright Ericsson AB 1997-2011. All Rights Reserved.
  *
  * The contents of this file are subject to the Erlang Public License,
  * Version 1.1, (the "License"); you may not use this file except in
@@ -238,6 +238,12 @@ erl_sys_args(int* argc, char** argv)
     ASSERT(max_files <= erts_vxworks_max_files);
 }
 
+void
+erts_sys_schedule_interrupt(int set)
+{
+    erts_check_io_interrupt(set);
+}
+
 /*
  * Called from schedule() when it runs out of runnable processes,
  * or when Erlang code has performed INPUT_REDUCTIONS reduction
@@ -246,7 +252,6 @@ erl_sys_args(int* argc, char** argv)
 void
 erl_sys_schedule(int runnable)
 {	
-    erts_check_io_interrupt(0);
     erts_check_io(!runnable);
 }
 
@@ -309,7 +314,7 @@ static void request_break(void)
   fprintf(stderr,"break!\n");
 #endif
   erts_break_requested = 1;
-  erts_check_io_interrupt(1); /* Make sure we don't sleep in erts_poll_wait */
+  erts_check_io_async_sig_interrupt(1); /* Make sure we don't sleep in erts_poll_wait */
 }
 
 static void do_quit(void)