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[Help-smalltalk] faster startup 1/n

From: Paolo Bonzini
Subject: [Help-smalltalk] faster startup 1/n
Date: Thu, 14 Dec 2006 09:19:53 +0100
User-agent: Thunderbird (Macintosh/20061025)

My first 2.4 goal (an easy one while we iron out the bugs in 2.3) is to make startup faster. Mike, that's why I didn't take your gsti in much consideration. :-)

This is an easy 10%. Another 20% can be gained by rewriting the way VFSHandlers remove temporary files, but I've not finished doing that.

For the rest, the idea is that we can perform some more work on saving that we currently do when reloading. So reloading is a matter of mmap'ing the file, copying it, possibly relocating the pointers in memory (but not if the image is loaded in the same place where it was stored!), and that's it. Should save another 20-30% here and there.


--- orig/libgst/input.c
+++ mod/libgst/input.c
@@ -331,6 +331,9 @@ _gst_push_stdin_string (void)

+  if (count == 0)
+    _gst_add_all_symbol_completions ();
   newStream = push_new_stream (STREAM_READLINE);

newStream->st_str.strBase = NULL; /* force readline() but no free() */
@@ -1168,9 +1171,6 @@ _gst_initialize_readline (void)

   /* Set up to use read to read from stdin */
   rl_getc_function = readline_getc;
-  if (count == 0)
-    _gst_add_all_symbol_completions ();

 #endif /* HAVE_READLINE */

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