From 67c94753e3f2ec372483cd41fbcc1bcdc04053fb Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sat, 11 Aug 2001 08:57:41 +0000 Subject: Update. 2001-08-11 Ulrich Drepper * malloc/malloc.c (ptmalloc_init): Don't call getenv five times. Instead use new function next_env_entry which iterates over the environment once. * sysdeps/arm/dl-machine.h (elf_machine_runtime_setup): Only set _dl_profile_map for the right object. * elf/dl-reloc.c (_dl_relocate_object): Allocate l_reloc_result only if consider_profiling is != 0, not if _dl_profile != NULL. * sysdeps/generic/dl-environ.c (_dl_next_ld_env_entry): Optimize a bit. Now returns pointer to first character set "LD_". * elf/rtld.c (process_envvars): Adjust for change above. * sysdeps/unix/sysv/linux/dl-librecon.h (EXTRA_LD_ENVVARS): Likewise. * sysdeps/unix/sysv/linux/i386/dl-librecon.h (EXTRA_LD_ENVVARS): Likewise. 2001-08-10 Wolfram Gloger * malloc/malloc.c (grow_heap): Use mmap() rather than mprotect() to allocate new memory, for better performance with Linux-2.4.x. --- sysdeps/arm/dl-machine.h | 7 +++++-- sysdeps/generic/dl-environ.c | 23 ++++++++++++----------- sysdeps/unix/sysv/linux/dl-librecon.h | 4 ++-- sysdeps/unix/sysv/linux/i386/dl-librecon.h | 8 ++++---- 4 files changed, 23 insertions(+), 19 deletions(-) (limited to 'sysdeps') diff --git a/sysdeps/arm/dl-machine.h b/sysdeps/arm/dl-machine.h index ba515ebec4..24fe366784 100644 --- a/sysdeps/arm/dl-machine.h +++ b/sysdeps/arm/dl-machine.h @@ -103,8 +103,11 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) if (profile) { got[2] = (Elf32_Addr) &_dl_runtime_profile; - /* Say that we really want profiling and the timers are started. */ - _dl_profile_map = l; + + if (_dl_name_match_p (_dl_profile, l)) + /* Say that we really want profiling and the timers are + started. */ + _dl_profile_map = l; } else /* This function will get called to fix up the GOT entry indicated by diff --git a/sysdeps/generic/dl-environ.c b/sysdeps/generic/dl-environ.c index 26ddf922f3..9b317548ec 100644 --- a/sysdeps/generic/dl-environ.c +++ b/sysdeps/generic/dl-environ.c @@ -1,5 +1,5 @@ /* Environment handling for dynamic loader. - Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc. + Copyright (C) 1995-1998, 2000, 2001 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -32,21 +32,22 @@ _dl_next_ld_env_entry (char ***position) char **current = *position; char *result = NULL; - if (current == NULL) - /* We start over. */ - current = _environ; - - while (result == NULL && *current != NULL) + while (*current != NULL) { - if ((*current)[0] == 'L' && (*current)[1] == 'D' && (*current)[2] == '_') - result = *current; + if (__builtin_expect ((*current)[0] == 'L', 0) + && (*current)[1] == 'D' && (*current)[2] == '_') + { + result = &(*current)[3]; + + /* Save current position for next visit. */ + *position = ++current; + + break; + } ++current; } - /* Save current position for next visit. */ - *position = current; - return result; } diff --git a/sysdeps/unix/sysv/linux/dl-librecon.h b/sysdeps/unix/sysv/linux/dl-librecon.h index b1052972f3..5c34d00edb 100644 --- a/sysdeps/unix/sysv/linux/dl-librecon.h +++ b/sysdeps/unix/sysv/linux/dl-librecon.h @@ -24,10 +24,10 @@ /* Recognizing extra environment variables. */ #define EXTRA_LD_ENVVARS \ case 13: \ - if (memcmp (&envline[3], "ASSUME_KERNEL", 13) == 0) \ + if (memcmp (envline, "ASSUME_KERNEL", 13) == 0) \ { \ unsigned long int i, j, osversion = 0; \ - char *p = &envline[17], *q; \ + char *p = &envline[14], *q; \ \ for (i = 0; i < 3; i++, p = q + 1) \ { \ diff --git a/sysdeps/unix/sysv/linux/i386/dl-librecon.h b/sysdeps/unix/sysv/linux/i386/dl-librecon.h index 627eecf62d..acff7fc14f 100644 --- a/sysdeps/unix/sysv/linux/i386/dl-librecon.h +++ b/sysdeps/unix/sysv/linux/i386/dl-librecon.h @@ -49,10 +49,10 @@ /* Recognizing extra environment variables. */ #define EXTRA_LD_ENVVARS \ case 13: \ - if (memcmp (&envline[3], "ASSUME_KERNEL", 13) == 0) \ + if (memcmp (envline, "ASSUME_KERNEL", 13) == 0) \ { \ unsigned long int i, j, osversion = 0; \ - char *p = &envline[17], *q; \ + char *p = &envline[14], *q; \ \ for (i = 0; i < 3; i++, p = q + 1) \ { \ @@ -72,9 +72,9 @@ } \ \ case 15: \ - if (memcmp (&envline[3], "LIBRARY_VERSION", 15) == 0) \ + if (memcmp (envline, "LIBRARY_VERSION", 15) == 0) \ { \ - _dl_correct_cache_id = envline[19] == '5' ? 2 : 3; \ + _dl_correct_cache_id = envline[16] == '5' ? 2 : 3; \ break; \ } -- cgit 1.4.1