|
@@ -1,113 +0,0 @@
|
|
|
-
|
|
|
- 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)
|
|
|
-
|
|
|
- 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];
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
- handler for SIGPROF. It calls `profil_count' (above) with the PC of the
|
|
|
- interrupted code. */
|
|
|
-#include <bits/profil-counter.h>
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
- 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)
|
|
|
- {
|
|
|
-
|
|
|
- if (samples == NULL)
|
|
|
-
|
|
|
- return 0;
|
|
|
-
|
|
|
- if (setitimer (ITIMER_PROF, &otimer, NULL) < 0)
|
|
|
- return -1;
|
|
|
- samples = NULL;
|
|
|
- return sigaction (SIGPROF, &oact, NULL);
|
|
|
- }
|
|
|
-
|
|
|
- if (samples)
|
|
|
- {
|
|
|
-
|
|
|
- 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
|