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[commits] r14311 - in /trunk/libc: ChangeLog.eglibc resolv/res_libc.c
- To: commits@xxxxxxxxxx
- Subject: [commits] r14311 - in /trunk/libc: ChangeLog.eglibc resolv/res_libc.c
- From: maxim@xxxxxxxxxx
- Date: Thu, 23 Jun 2011 11:02:54 -0000
Author: maxim
Date: Thu Jun 23 04:02:51 2011
New Revision: 14311
Log:
2011-06-23 Paul Pluzhnikov <ppluzhnikov@xxxxxxxxxx>
* resolv/res_libc.c (__res_initstamp): Declare unconditionally.
(__res_maybe_init): Avoid double-checked locking.
Modified:
trunk/libc/ChangeLog.eglibc
trunk/libc/resolv/res_libc.c
Modified: trunk/libc/ChangeLog.eglibc
==============================================================================
--- trunk/libc/ChangeLog.eglibc (original)
+++ trunk/libc/ChangeLog.eglibc Thu Jun 23 04:02:51 2011
@@ -1,3 +1,8 @@
+2011-06-23 Paul Pluzhnikov <ppluzhnikov@xxxxxxxxxx>
+
+ * resolv/res_libc.c (__res_initstamp): Declare unconditionally.
+ (__res_maybe_init): Avoid double-checked locking.
+
2011-06-21 Joseph Myers <joseph@xxxxxxxxxxxxxxxx>
* elf/pldd.c (argp_program_bug_address): Use REPORT_BUGS_TO.
Modified: trunk/libc/resolv/res_libc.c
==============================================================================
--- trunk/libc/resolv/res_libc.c (original)
+++ trunk/libc/resolv/res_libc.c Thu Jun 23 04:02:51 2011
@@ -28,6 +28,7 @@
out) since res_init() should go into libc.so but the rest of that
file should not. */
+__libc_lock_define_initialized (static, lock);
extern unsigned long long int __res_initstamp attribute_hidden;
/* We have atomic increment operations on 64-bit platforms. */
#if __WORDSIZE == 64
@@ -35,7 +36,6 @@
# define atomicincunlock(lock) (void) 0
# define atomicinc(var) catomic_increment (&(var))
#else
-__libc_lock_define_initialized (static, lock);
# define atomicinclock(lock) __libc_lock_lock (lock)
# define atomicincunlock(lock) __libc_lock_unlock (lock)
# define atomicinc(var) ++var
@@ -100,12 +100,12 @@
if (resp->options & RES_INIT) {
ret = stat (_PATH_RESCONF, &statbuf);
+ __libc_lock_lock (lock);
if ((ret == 0) && (last_mtime != statbuf.st_mtime)) {
last_mtime = statbuf.st_mtime;
- atomicinclock (lock);
atomicinc (__res_initstamp);
- atomicincunlock (lock);
}
+ __libc_lock_unlock (lock);
if (__res_initstamp != resp->_u._ext.initstamp) {
if (resp->nscount > 0)
__res_iclose (resp, true);