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[master] 9190dc3 Add 16k more thread stack to cater for PCRE-JIT.

 

 

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phk at varnish-cache

Apr 30, 2012, 11:40 PM

Post #1 of 1 (70 views)
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[master] 9190dc3 Add 16k more thread stack to cater for PCRE-JIT.

commit 9190dc3602bb65e4a8423f2defedf62145742641
Author: Poul-Henning Kamp <phk [at] FreeBSD>
Date: Tue May 1 06:38:54 2012 +0000

Add 16k more thread stack to cater for PCRE-JIT.

Polish vre.c a bit with respect to memory management and error messages.

diff --git a/bin/varnishd/mgt/mgt_pool.c b/bin/varnishd/mgt/mgt_pool.c
index e5d5cd0..986d405 100644
--- a/bin/varnishd/mgt/mgt_pool.c
+++ b/bin/varnishd/mgt/mgt_pool.c
@@ -215,6 +215,6 @@ const struct parspec WRK_parspec[] = {
"This is likely rounded up to a multiple of 4k by the kernel.\n"
"The kernel/OS has a lower limit which will be enforced.\n",
EXPERIMENTAL,
- "32k", "bytes" },
+ "48k", "bytes" },
{ NULL, NULL, NULL }
};
diff --git a/lib/libvarnish/vre.c b/lib/libvarnish/vre.c
index ee462c7..2fce5c7 100644
--- a/lib/libvarnish/vre.c
+++ b/lib/libvarnish/vre.c
@@ -37,17 +37,22 @@

#include "vre.h"

+#ifndef PCRE_STUDY_JIT_COMPILE
+#define PCRE_STUDY_JIT_COMPILE 0
+#endif
+
+#if PCRE_MAJOR < 8 || (PCRE_MAJOR == 8 && PCRE_MINOR < 20)
+# define pcre_free_study pcre_free
+#endif
+
struct vre {
unsigned magic;
#define VRE_MAGIC 0xe83097dc
pcre *re;
pcre_extra *re_extra;
+ int my_extra;
};

-#ifndef PCRE_STUDY_JIT_COMPILE
-#define PCRE_STUDY_JIT_COMPILE 0
-#endif
-
/*
* We don't want to spread or even expose the majority of PCRE options
* so we establish our own options and implement hard linkage to PCRE
@@ -58,29 +63,32 @@ const unsigned VRE_NOTEMPTY = PCRE_NOTEMPTY;

vre_t *
VRE_compile(const char *pattern, int options,
- const char **errptr, int *erroffset)
+ const char **errptr, int *erroffset)
{
vre_t *v;
*errptr = NULL; *erroffset = 0;

ALLOC_OBJ(v, VRE_MAGIC);
- if (v == NULL)
+ if (v == NULL) {
+ *errptr = "Out of memory for VRE";
return (NULL);
+ }
v->re = pcre_compile(pattern, options, errptr, erroffset, NULL);
if (v->re == NULL) {
VRE_free(&v);
return (NULL);
}
v->re_extra = pcre_study(v->re, PCRE_STUDY_JIT_COMPILE, errptr);
+ if (*errptr != NULL) {
+ VRE_free(&v);
+ return (NULL);
+ }
if (v->re_extra == NULL) {
- if (*errptr != NULL) {
- VRE_free(&v);
- return (NULL);
- }
- /* allocate our own, pcre_study can return NULL without it
- * being an error */
+ /* allocate our own */
v->re_extra = calloc(1, sizeof(pcre_extra));
+ v->my_extra = 1;
if (v->re_extra == NULL) {
+ *errptr = "Out of memory for pcre_extra";
VRE_free(&v);
return (NULL);
}
@@ -122,11 +130,13 @@ VRE_free(vre_t **vv)

*vv = NULL;
CHECK_OBJ(v, VRE_MAGIC);
-#ifdef PCRE_CONFIG_JIT
- pcre_free_study(v->re_extra);
-#else
- free(v->re_extra);
-#endif
- pcre_free(v->re);
+ if (v->re_extra != NULL) {
+ if (v->my_extra)
+ free(v->re_extra);
+ else
+ pcre_free_study(v->re_extra);
+ }
+ if (v->re != NULL)
+ pcre_free(v->re);
FREE_OBJ(v);
}

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