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Cache the results of the ps_strings sysctl so that it doesn't have to be

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redone for every call of setproctitle().
This commit is contained in:
David Greenman 1998-04-28 06:59:14 +00:00
parent 49772d6129
commit 214bed53a2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=35490
2 changed files with 24 additions and 20 deletions
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22
lib/libc/gen/setproctitle.c
View File

@ -14,7 +14,7 @@
* 3. Absolutely no warranty of function or purpose is made by the author
* Peter Wemm.
*
* $Id$
* $Id: setproctitle.c,v 1.5 1997/02/22 15:08:33 peter Exp $
*/
#include <sys/types.h>
@ -55,9 +55,11 @@ struct old_ps_strings {
#endif
#define SPT_BUFSIZE 2048 /* from other parts of sendmail */
#define SPT_BUFSIZE 128 /* from other parts of sendmail */
extern char * __progname; /* is this defined in a .h anywhere? */
static struct ps_strings *ps_strings;
void
#if defined(__STDC__)
setproctitle(const char *fmt, ...)
@ -71,7 +73,6 @@ setproctitle(fmt, va_alist)
static char *ps_argv[2];
va_list ap;
int mib[2];
struct ps_strings *ps_strings;
size_t len;
#if defined(__STDC__)
@ -102,13 +103,14 @@ setproctitle(fmt, va_alist)
va_end(ap);
ps_strings = NULL;
mib[0] = CTL_KERN;
mib[1] = KERN_PS_STRINGS;
len = sizeof(ps_strings);
if (sysctl(mib, 2, &ps_strings, &len, NULL, 0) < 0 ||
ps_strings == NULL)
ps_strings = PS_STRINGS;
if (ps_strings == NULL) {
mib[0] = CTL_KERN;
mib[1] = KERN_PS_STRINGS;
len = sizeof(ps_strings);
if (sysctl(mib, 2, &ps_strings, &len, NULL, 0) < 0 ||
ps_strings == NULL)
ps_strings = PS_STRINGS;
}
/* PS_STRINGS points to zeroed memory on a style #2 kernel */
if (ps_strings->ps_argvstr) {

22
lib/libutil/setproctitle.c
View File

@ -14,7 +14,7 @@
* 3. Absolutely no warranty of function or purpose is made by the author
* Peter Wemm.
*
* $Id$
* $Id: setproctitle.c,v 1.5 1997/02/22 15:08:33 peter Exp $
*/
#include <sys/types.h>
@ -55,9 +55,11 @@ struct old_ps_strings {
#endif
#define SPT_BUFSIZE 2048 /* from other parts of sendmail */
#define SPT_BUFSIZE 128 /* from other parts of sendmail */
extern char * __progname; /* is this defined in a .h anywhere? */
static struct ps_strings *ps_strings;
void
#if defined(__STDC__)
setproctitle(const char *fmt, ...)
@ -71,7 +73,6 @@ setproctitle(fmt, va_alist)
static char *ps_argv[2];
va_list ap;
int mib[2];
struct ps_strings *ps_strings;
size_t len;
#if defined(__STDC__)
@ -102,13 +103,14 @@ setproctitle(fmt, va_alist)
va_end(ap);
ps_strings = NULL;
mib[0] = CTL_KERN;
mib[1] = KERN_PS_STRINGS;
len = sizeof(ps_strings);
if (sysctl(mib, 2, &ps_strings, &len, NULL, 0) < 0 ||
ps_strings == NULL)
ps_strings = PS_STRINGS;
if (ps_strings == NULL) {
mib[0] = CTL_KERN;
mib[1] = KERN_PS_STRINGS;
len = sizeof(ps_strings);
if (sysctl(mib, 2, &ps_strings, &len, NULL, 0) < 0 ||
ps_strings == NULL)
ps_strings = PS_STRINGS;
}
/* PS_STRINGS points to zeroed memory on a style #2 kernel */
if (ps_strings->ps_argvstr) {