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mostang.com!davidm 2004-01-21 06:36:35 +00:00
parent f928eec36a
commit a54ee88009
4 changed files with 263 additions and 0 deletions

76
tests/forker.c Normal file
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/* libunwind - a platform-independent unwind library
Copyright (C) 2004 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
int
main (int argc, char **argv, char **envp)
{
char *program, **child_argv;
struct timeval start, stop;
double secs;
int status, i;
long count;
pid_t pid;
count = atol (argv[1]);
program = argv[2];
child_argv = alloca ((argc - 1) * sizeof (char *));
for (i = 0; i < argc - 2; ++i)
child_argv[i] = argv[2 + i];
child_argv[i] = NULL;
gettimeofday (&start, NULL);
for (i = 0; i < count; ++i)
{
pid = fork ();
if (pid == 0)
{
execve (program, child_argv, envp);
_exit (-1);
}
else
{
waitpid (pid, &status, 0);
if (!WIFEXITED (status) || WEXITSTATUS (status) != 0)
{
fprintf (stderr, "%s: child failed\n", argv[0]);
exit (-1);
}
}
}
gettimeofday (&stop, NULL);
secs = ((stop.tv_sec + 1e-6 * stop.tv_usec)
- (start.tv_sec + 1e-6 * start.tv_usec));
printf ("%lu nsec/execution\n",
(unsigned long) (1e9 * secs / (double) count));
return 0;
}

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tests/perf-startup Normal file
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#!/bin/sh
platform=$1
LIBUNWIND=../src/.libs/libunwind.so
LIBUNWIND_PLAT=../src/.libs/libunwind-$platform.so
warmup=$(./forker 2000 /bin/true | cut -f1 -d' ')
nsec1=$(./forker 2000 /bin/true | cut -f1 -d' ')
echo -e \"/bin/true\""\t\t\t\t\t\t": $nsec1 nsec/execution
nsec2=$(LD_PRELOAD=$LIBUNWIND ./forker 2000 /bin/true | cut -f1 -d' ')
echo -e \"LD_PRELOAD=$LIBUNWIND /bin/true\""\t": $nsec2 nsec/execution
nsec3=$(LD_PRELOAD=$LIBUNWIND_PLAT ./forker 2000 /bin/true | cut -f1 -d' ')
echo -e \"LD_PRELOAD=$LIBUNWIND_PLAT /bin/true\""\t": $nsec3 nsec/execution
echo
echo -e "Overhead of preloading $LIBUNWIND\t: " $(($nsec2 - $nsec1)) nsec
echo -e "Overhead of preloading $LIBUNWIND_PLAT\t: " $(($nsec3 - $nsec1)) nsec

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tests/test-static-link-gen.c Normal file
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/* libunwind - a platform-independent unwind library
Copyright (C) 2004 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
Copyright (c) 2003 Hewlett-Packard Co.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include <stdio.h>
#include <libunwind.h>
extern int verbose;
static void *funcs[] =
{
(void *) &unw_get_reg,
(void *) &unw_get_fpreg,
(void *) &unw_set_reg,
(void *) &unw_set_fpreg,
(void *) &unw_resume,
(void *) &unw_create_addr_space,
(void *) &unw_destroy_addr_space,
(void *) &unw_get_accessors,
(void *) &unw_flush_cache,
(void *) &unw_set_caching_policy,
(void *) &unw_regname,
(void *) &unw_get_proc_info,
(void *) &unw_get_save_loc,
(void *) &unw_is_signal_frame,
(void *) &unw_get_proc_name
};
int
test_generic (void)
{
ucontext_t uc;
unw_cursor_t c;
if (verbose)
printf (__FILE__": funcs[0]=%p\n", funcs[0]);
#ifndef UNW_REMOTE_ONLY
unw_getcontext (&uc);
unw_init_local (&c, &uc);
unw_init_remote (&c, unw_local_addr_space, &uc);
#endif
return unw_step (&c);
}

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/* libunwind - a platform-independent unwind library
Copyright (C) 2004 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
Copyright (c) 2003 Hewlett-Packard Co.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/* The purpose of this program is simply to link in all libunwind-API
functions both in their local-only and generic variants and to make
sure that the final result can be linked statically. */
#include <stdio.h>
#define UNW_LOCAL_ONLY
#include <libunwind.h>
extern int test_generic (void);
int verbose;
#ifdef UNW_REMOTE_ONLY
int
test_local (void)
{
return 0;
}
#else /* !UNW_REMOTE_ONLY */
static void *funcs[] =
{
(void *) &unw_get_reg,
(void *) &unw_get_fpreg,
(void *) &unw_set_reg,
(void *) &unw_set_fpreg,
(void *) &unw_resume,
(void *) &unw_create_addr_space,
(void *) &unw_destroy_addr_space,
(void *) &unw_get_accessors,
(void *) &unw_flush_cache,
(void *) &unw_set_caching_policy,
(void *) &unw_regname,
(void *) &unw_get_proc_info,
(void *) &unw_get_save_loc,
(void *) &unw_is_signal_frame,
(void *) &unw_get_proc_name,
(void *) &_U_dyn_register,
(void *) &_U_dyn_cancel
};
int
test_local (void)
{
ucontext_t uc;
unw_cursor_t c;
if (verbose)
printf (__FILE__": funcs[0]=%p\n", funcs[0]);
unw_getcontext (&uc);
unw_init_local (&c, &uc);
unw_init_remote (&c, unw_local_addr_space, &uc);
return unw_step (&c);
}
#endif /* !UNW_REMOTE_ONLY */
int
main (int argc, char **argv)
{
if (argc > 1)
verbose = 1;
if (test_local () < 0)
return -1;
if (test_generic () < 0)
return -1;
return 0;
}