diff options
Diffstat (limited to 'libc/sysdeps/linux')
| -rw-r--r-- | libc/sysdeps/linux/common/Makefile | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/profil.c | 113 |
2 files changed, 1 insertions, 114 deletions
diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile index bee640db9..3135172c0 100644 --- a/libc/sysdeps/linux/common/Makefile +++ b/libc/sysdeps/linux/common/Makefile @@ -26,7 +26,7 @@ CSRC= waitpid.c getdnnm.c gethstnm.c getcwd.c ptrace.c \ truncate64.c getrlimit64.c setrlimit64.c creat64.c \ llseek.c pread_write.c _exit.c sync.c getdirname.c \ sendfile64.c xstatconv.c getdents.c getdents64.c vfork.c \ - ulimit.c profil.c + ulimit.c ifneq ($(strip $(EXCLUDE_BRK)),y) CSRC+=sbrk.c endif diff --git a/libc/sysdeps/linux/common/profil.c b/libc/sysdeps/linux/common/profil.c deleted file mode 100644 index 3df0836c1..000000000 --- a/libc/sysdeps/linux/common/profil.c +++ /dev/null @@ -1,113 +0,0 @@ -/* Low-level statistical profiling support function. Mostly POSIX.1 version. - Copyright (C) 1996,97,98,2002 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 - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <sys/types.h> -#include <unistd.h> -#include <errno.h> -#include <signal.h> -#include <sys/time.h> - -#ifndef SIGPROF - -int profil (u_short *sample_buffer, size_t size, size_t offset, u_int scale) -{ - if (scale == 0) - /* Disable profiling. */ - return 0; - __set_errno (ENOSYS); - return -1; -} - -#else - -static u_short *samples; -static size_t nsamples; -static size_t pc_offset; -static u_int pc_scale; - -static inline void -profil_count (void *pc) -{ - size_t i = (pc - pc_offset - (void *) 0) / 2; - if (sizeof (unsigned long long int) > sizeof (size_t)) - i = (unsigned long long int) i * pc_scale / 65536; - else - i = i / 65536 * pc_scale + i % 65536 * pc_scale / 65536; - if (i < nsamples) - ++samples[i]; -} - -/* Get the machine-dependent definition of `profil_counter', the signal - handler for SIGPROF. It calls `profil_count' (above) with the PC of the - interrupted code. */ -#include <bits/profil-counter.h> - - -/* Enable statistical profiling, writing samples of the PC into at most - SIZE bytes of SAMPLE_BUFFER; every processor clock tick while profiling - is enabled, the system examines the user PC and increments - SAMPLE_BUFFER[((PC - OFFSET) / 2) * SCALE / 65536]. If SCALE is zero, - disable profiling. Returns zero on success, -1 on error. */ -int profil (u_short *sample_buffer, size_t size, size_t offset, u_int scale) -{ - static struct sigaction oact; - static struct itimerval otimer; - struct sigaction act; - struct itimerval timer; - - if (sample_buffer == NULL) - { - /* Disable profiling. */ - if (samples == NULL) - /* Wasn't turned on. */ - return 0; - - if (setitimer (ITIMER_PROF, &otimer, NULL) < 0) - return -1; - samples = NULL; - return sigaction (SIGPROF, &oact, NULL); - } - - if (samples) - { - /* Was already turned on. Restore old timer and signal handler - first. */ - if (setitimer (ITIMER_PROF, &otimer, NULL) < 0 - || sigaction (SIGPROF, &oact, NULL) < 0) - return -1; - } - - samples = sample_buffer; - nsamples = size / sizeof *samples; - pc_offset = offset; - pc_scale = scale; - - act.sa_handler = (__sighandler_t) &profil_counter; - act.sa_flags = SA_RESTART; - __sigfillset (&act.sa_mask); - if (sigaction (SIGPROF, &act, &oact) < 0) - return -1; - - timer.it_value.tv_sec = 0; - timer.it_value.tv_usec = 1; - timer.it_interval = timer.it_value; - return setitimer (ITIMER_PROF, &timer, &otimer); -} - -#endif |