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This commits the performance mods that give the priority processing engine in the pbx, a 25-30% speed boost. The two updates used, are, first, to merge the ast_exists_extension() and the ast_spawn_extension() where they are called sequentially in a loop in the code, into a slightly upgraded version of ast_spawn_extension(), with a few extra args; and, second, I modified the substitute_variables_helper_full, so it zeroes out the byte after the evaluated string instead of demanding you pre-zero the buffer; I also went thru the code and removed the code that zeroed this buffer before every call to the substitute_variables_helper_full. The first fix provides about a 9% speedup, and the second the rest. These figures come from the 'PIPS' benchmark I describe in blogs, conf. reports, etc.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@88166 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Steve Murphy
2007-11-01 22:26:51 +00:00
parent 842b1a34fe
commit 63f2f04cf4
25 changed files with 103 additions and 117 deletions
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4
utils/extconf.c
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@@ -5700,6 +5700,7 @@ static void pbx_substitute_variables_helper_full(struct ast_channel *c, struct v
char *vars, *vare;
int pos, brackets, needsub, len;
*cp2 = 0; /* just in case there's nothing to do */
whereweare=tmp=cp1;
while (!ast_strlen_zero(whereweare) && count) {
/* Assume we're copying the whole remaining string */
@@ -5731,6 +5732,7 @@ static void pbx_substitute_variables_helper_full(struct ast_channel *c, struct v
count -= pos;
cp2 += pos;
whereweare += pos;
*cp2 = 0;
}
if (nextvar) {
@@ -5802,6 +5804,7 @@ static void pbx_substitute_variables_helper_full(struct ast_channel *c, struct v
memcpy(cp2, cp4, length);
count -= length;
cp2 += length;
*cp2 = 0;
}
} else if (nextexp) {
/* We have an expression. Find the start and end, and determine
@@ -5859,6 +5862,7 @@ static void pbx_substitute_variables_helper_full(struct ast_channel *c, struct v
ast_log(LOG_DEBUG, "Expression result is '%s'\n", cp2);
count -= length;
cp2 += length;
*cp2 = 0;
}
} else
break;