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Update.

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2000-08-31  Ulrich Drepper  <drepper@redhat.com>

	* malloc/malloc.c (ptmalloc_init): Optimize a bit by not calling
	__secure_getenv.  Instead test __libc_enable_secure once.

	* io/pwd.c (main): Provide a good example, use *_unlocked function.
This commit is contained in:
Ulrich Drepper
2000-08-31 07:34:24 +00:00
parent b2fe29ddb5
commit fbcc0996a8
3 changed files with 24 additions and 16 deletions
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29
malloc/malloc.c
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@ -314,10 +314,6 @@ extern char* getenv();
# endif
#endif
#ifndef _LIBC
# define __secure_getenv(Str) getenv (Str)
#endif
/* Macros for handling mutexes and thread-specific data. This is
included early, because some thread-related header files (such as
pthread.h) should be included before any others. */
@ -1680,6 +1676,7 @@ ptmalloc_init __MALLOC_P((void))
char* s;
# endif
#endif
int secure;
if(__malloc_initialized >= 0) return;
__malloc_initialized = 0;
@ -1708,20 +1705,24 @@ ptmalloc_init __MALLOC_P((void))
tsd_setspecific(arena_key, (Void_t *)&main_arena);
thread_atfork(ptmalloc_lock_all, ptmalloc_unlock_all, ptmalloc_init_all);
#if defined _LIBC || defined MALLOC_HOOKS
if((s = __secure_getenv("MALLOC_TRIM_THRESHOLD_")))
mALLOPt(M_TRIM_THRESHOLD, atoi(s));
if((s = __secure_getenv("MALLOC_TOP_PAD_")))
mALLOPt(M_TOP_PAD, atoi(s));
if((s = __secure_getenv("MALLOC_MMAP_THRESHOLD_")))
mALLOPt(M_MMAP_THRESHOLD, atoi(s));
if((s = __secure_getenv("MALLOC_MMAP_MAX_")))
mALLOPt(M_MMAP_MAX, atoi(s));
s = getenv("MALLOC_CHECK_");
#ifndef NO_THREADS
__malloc_hook = save_malloc_hook;
__free_hook = save_free_hook;
#endif
if(s && (! __libc_enable_secure || access ("/etc/suid-debug", F_OK) == 0)) {
secure = __libc_enable_secure;
if (! secure)
{
if((s = getenv("MALLOC_TRIM_THRESHOLD_")))
mALLOPt(M_TRIM_THRESHOLD, atoi(s));
if((s = getenv("MALLOC_TOP_PAD_")))
mALLOPt(M_TOP_PAD, atoi(s));
if((s = getenv("MALLOC_MMAP_THRESHOLD_")))
mALLOPt(M_MMAP_THRESHOLD, atoi(s));
if((s = getenv("MALLOC_MMAP_MAX_")))
mALLOPt(M_MMAP_MAX, atoi(s));
}
s = getenv("MALLOC_CHECK_");
if(s && (! secure || access ("/etc/suid-debug", F_OK) == 0)) {
if(s[0]) mALLOPt(M_CHECK_ACTION, (int)(s[0] - '0'));
__malloc_check_init();
}