mirror of
https://gcc.gnu.org/git/gcc.git
synced 2024-11-27 05:44:15 +08:00
509 lines
12 KiB
C
509 lines
12 KiB
C
/* xztest.c -- Test for libbacktrace LZMA decoder.
|
|
Copyright (C) 2020-2022 Free Software Foundation, Inc.
|
|
Written by Ian Lance Taylor, Google.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are
|
|
met:
|
|
|
|
(1) Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
(2) Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the
|
|
distribution.
|
|
|
|
(3) The name of the author may not be used to
|
|
endorse or promote products derived from this software without
|
|
specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE. */
|
|
|
|
#include "config.h"
|
|
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#ifdef HAVE_LIBLZMA
|
|
#include <lzma.h>
|
|
#endif
|
|
|
|
#include "backtrace.h"
|
|
#include "backtrace-supported.h"
|
|
|
|
#include "internal.h"
|
|
#include "testlib.h"
|
|
|
|
#ifndef HAVE_CLOCK_GETTIME
|
|
|
|
typedef int xclockid_t;
|
|
|
|
static int
|
|
xclock_gettime (xclockid_t id ATTRIBUTE_UNUSED,
|
|
struct timespec *ts ATTRIBUTE_UNUSED)
|
|
{
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
#define clockid_t xclockid_t
|
|
#define clock_gettime xclock_gettime
|
|
#undef CLOCK_REALTIME
|
|
#define CLOCK_REALTIME 0
|
|
|
|
#endif /* !defined(HAVE_CLOCK_GETTIME) */
|
|
|
|
#ifdef CLOCK_PROCESS_CPUTIME_ID
|
|
#define LIBLZMA_CLOCK_GETTIME_ARG CLOCK_PROCESS_CPUTIME_ID
|
|
#else
|
|
#define LIBLZMA_CLOCK_GETTIME_ARG CLOCK_REALTIME
|
|
#endif
|
|
|
|
/* Some tests for the local lzma inflation code. */
|
|
|
|
struct lzma_test
|
|
{
|
|
const char *name;
|
|
const char *uncompressed;
|
|
size_t uncompressed_len;
|
|
const char *compressed;
|
|
size_t compressed_len;
|
|
};
|
|
|
|
/* Error callback. */
|
|
|
|
static void
|
|
error_callback_compress (void *vdata ATTRIBUTE_UNUSED, const char *msg,
|
|
int errnum)
|
|
{
|
|
fprintf (stderr, "%s", msg);
|
|
if (errnum > 0)
|
|
fprintf (stderr, ": %s", strerror (errnum));
|
|
fprintf (stderr, "\n");
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
|
|
static const struct lzma_test tests[] =
|
|
{
|
|
{
|
|
"empty",
|
|
"",
|
|
0,
|
|
("\xfd\x37\x7a\x58\x5a\x00\x00\x04\xe6\xd6\xb4\x46\x00\x00\x00\x00"
|
|
"\x1c\xdf\x44\x21\x1f\xb6\xf3\x7d\x01\x00\x00\x00\x00\x04\x59\x5a"),
|
|
32,
|
|
},
|
|
{
|
|
"hello",
|
|
"hello, world\n",
|
|
0,
|
|
("\xfd\x37\x7a\x58\x5a\x00\x00\x04\xe6\xd6\xb4\x46\x02\x00\x21\x01"
|
|
"\x16\x00\x00\x00\x74\x2f\xe5\xa3\x01\x00\x0c\x68\x65\x6c\x6c\x6f"
|
|
"\x2c\x20\x77\x6f\x72\x6c\x64\x0a\x00\x00\x00\x00\x7b\x46\x5a\x81"
|
|
"\xc9\x12\xb8\xea\x00\x01\x25\x0d\x71\x19\xc4\xb6\x1f\xb6\xf3\x7d"
|
|
"\x01\x00\x00\x00\x00\x04\x59\x5a"),
|
|
72,
|
|
},
|
|
{
|
|
"goodbye",
|
|
"goodbye, world",
|
|
0,
|
|
("\xfd\x37\x7a\x58\x5a\x00\x00\x04\xe6\xd6\xb4\x46\x02\x00\x21\x01"
|
|
"\x16\x00\x00\x00\x74\x2f\xe5\xa3\x01\x00\x0d\x67\x6f\x6f\x64\x62"
|
|
"\x79\x65\x2c\x20\x77\x6f\x72\x6c\x64\x00\x00\x00\xf6\xf8\xa3\x33"
|
|
"\x8c\x4e\xc9\x68\x00\x01\x26\x0e\x08\x1b\xe0\x04\x1f\xb6\xf3\x7d"
|
|
"\x01\x00\x00\x00\x00\x04\x59\x5a"),
|
|
72,
|
|
},
|
|
};
|
|
|
|
/* Test the hand coded samples. */
|
|
|
|
static void
|
|
test_samples (struct backtrace_state *state)
|
|
{
|
|
size_t i;
|
|
|
|
for (i = 0; i < sizeof tests / sizeof tests[0]; ++i)
|
|
{
|
|
unsigned char *uncompressed;
|
|
size_t uncompressed_len;
|
|
|
|
uncompressed = NULL;
|
|
uncompressed_len = 0;
|
|
if (!backtrace_uncompress_lzma (state,
|
|
((const unsigned char *)
|
|
tests[i].compressed),
|
|
tests[i].compressed_len,
|
|
error_callback_compress, NULL,
|
|
&uncompressed, &uncompressed_len))
|
|
{
|
|
fprintf (stderr, "test %s: uncompress failed\n", tests[i].name);
|
|
++failures;
|
|
}
|
|
else
|
|
{
|
|
size_t v;
|
|
|
|
v = tests[i].uncompressed_len;
|
|
if (v == 0)
|
|
v = strlen (tests[i].uncompressed);
|
|
if (uncompressed_len != v)
|
|
{
|
|
fprintf (stderr,
|
|
"test %s: got uncompressed length %zu, want %zu\n",
|
|
tests[i].name, uncompressed_len, v);
|
|
++failures;
|
|
}
|
|
else if (v > 0 && memcmp (tests[i].uncompressed, uncompressed, v) != 0)
|
|
{
|
|
size_t j;
|
|
|
|
fprintf (stderr, "test %s: uncompressed data mismatch\n",
|
|
tests[i].name);
|
|
for (j = 0; j < v; ++j)
|
|
if (tests[i].uncompressed[j] != uncompressed[j])
|
|
fprintf (stderr, " %zu: got %#x want %#x\n", j,
|
|
uncompressed[j], tests[i].uncompressed[j]);
|
|
++failures;
|
|
}
|
|
else
|
|
printf ("PASS: lzma %s\n", tests[i].name);
|
|
|
|
backtrace_free (state, uncompressed, uncompressed_len,
|
|
error_callback_compress, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
#if HAVE_LIBLZMA
|
|
|
|
/* Given a set of TRIALS timings, discard the lowest and highest
|
|
values and return the mean average of the rest. */
|
|
|
|
static size_t
|
|
average_time (const size_t *times, size_t trials)
|
|
{
|
|
size_t imax;
|
|
size_t max;
|
|
size_t imin;
|
|
size_t min;
|
|
size_t i;
|
|
size_t sum;
|
|
|
|
imin = 0;
|
|
imax = 0;
|
|
min = times[0];
|
|
max = times[0];
|
|
for (i = 1; i < trials; ++i)
|
|
{
|
|
if (times[i] < min)
|
|
{
|
|
imin = i;
|
|
min = times[i];
|
|
}
|
|
if (times[i] > max)
|
|
{
|
|
imax = i;
|
|
max = times[i];
|
|
}
|
|
}
|
|
|
|
sum = 0;
|
|
for (i = 0; i < trials; ++i)
|
|
{
|
|
if (i != imax && i != imin)
|
|
sum += times[i];
|
|
}
|
|
return sum / (trials - 2);
|
|
}
|
|
|
|
#endif
|
|
|
|
/* Test a larger text, if available. */
|
|
|
|
static void
|
|
test_large (struct backtrace_state *state ATTRIBUTE_UNUSED)
|
|
{
|
|
#if HAVE_LIBLZMA
|
|
unsigned char *orig_buf;
|
|
size_t orig_bufsize;
|
|
size_t i;
|
|
lzma_stream initial_stream = LZMA_STREAM_INIT;
|
|
lzma_stream stream;
|
|
unsigned char *compressed_buf;
|
|
size_t compressed_bufsize;
|
|
unsigned char *uncompressed_buf;
|
|
size_t uncompressed_bufsize;
|
|
unsigned char *spare_buf;
|
|
int r;
|
|
clockid_t cid;
|
|
struct timespec ts1;
|
|
struct timespec ts2;
|
|
size_t ctime;
|
|
size_t ztime;
|
|
const size_t trials = 16;
|
|
size_t ctimes[16];
|
|
size_t ztimes[16];
|
|
static const char * const names[] = {
|
|
"Isaac.Newton-Opticks.txt",
|
|
"../libgo/go/testdata/Isaac.Newton-Opticks.txt",
|
|
};
|
|
|
|
orig_buf = NULL;
|
|
orig_bufsize = 0;
|
|
uncompressed_buf = NULL;
|
|
compressed_buf = NULL;
|
|
|
|
for (i = 0; i < sizeof names / sizeof names[0]; ++i)
|
|
{
|
|
size_t len;
|
|
char *namebuf;
|
|
FILE *e;
|
|
struct stat st;
|
|
char *rbuf;
|
|
size_t got;
|
|
|
|
len = strlen (SRCDIR) + strlen (names[i]) + 2;
|
|
namebuf = malloc (len);
|
|
if (namebuf == NULL)
|
|
{
|
|
perror ("malloc");
|
|
goto fail;
|
|
}
|
|
snprintf (namebuf, len, "%s/%s", SRCDIR, names[i]);
|
|
e = fopen (namebuf, "r");
|
|
free (namebuf);
|
|
if (e == NULL)
|
|
continue;
|
|
if (fstat (fileno (e), &st) < 0)
|
|
{
|
|
perror ("fstat");
|
|
fclose (e);
|
|
continue;
|
|
}
|
|
rbuf = malloc (st.st_size);
|
|
if (rbuf == NULL)
|
|
{
|
|
perror ("malloc");
|
|
goto fail;
|
|
}
|
|
got = fread (rbuf, 1, st.st_size, e);
|
|
fclose (e);
|
|
if (got > 0)
|
|
{
|
|
orig_buf = (unsigned char *) rbuf;
|
|
orig_bufsize = got;
|
|
break;
|
|
}
|
|
free (rbuf);
|
|
}
|
|
|
|
if (orig_buf == NULL)
|
|
{
|
|
/* We couldn't find an input file. */
|
|
printf ("UNSUPPORTED: lzma large\n");
|
|
return;
|
|
}
|
|
|
|
stream = initial_stream;
|
|
r = lzma_easy_encoder (&stream, 6, LZMA_CHECK_CRC32);
|
|
if (r != LZMA_OK)
|
|
{
|
|
fprintf (stderr, "lzma_easy_encoder failed: %d\n", r);
|
|
goto fail;
|
|
}
|
|
|
|
compressed_bufsize = orig_bufsize + 100;
|
|
compressed_buf = malloc (compressed_bufsize);
|
|
if (compressed_buf == NULL)
|
|
{
|
|
perror ("malloc");
|
|
goto fail;
|
|
}
|
|
|
|
stream.next_in = orig_buf;
|
|
stream.avail_in = orig_bufsize;
|
|
stream.next_out = compressed_buf;
|
|
stream.avail_out = compressed_bufsize;
|
|
|
|
do
|
|
{
|
|
r = lzma_code (&stream, LZMA_FINISH);
|
|
if (r != LZMA_OK && r != LZMA_STREAM_END)
|
|
{
|
|
fprintf (stderr, "lzma_code failed: %d\n", r);
|
|
goto fail;
|
|
}
|
|
}
|
|
while (r != LZMA_STREAM_END);
|
|
|
|
compressed_bufsize = stream.total_out;
|
|
|
|
if (!backtrace_uncompress_lzma (state, (unsigned char *) compressed_buf,
|
|
compressed_bufsize,
|
|
error_callback_compress, NULL,
|
|
&uncompressed_buf, &uncompressed_bufsize))
|
|
{
|
|
fprintf (stderr, "lzma large: backtrace_uncompress_lzma failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (uncompressed_bufsize != orig_bufsize)
|
|
{
|
|
fprintf (stderr,
|
|
"lzma large: got uncompressed length %zu, want %zu\n",
|
|
uncompressed_bufsize, orig_bufsize);
|
|
goto fail;
|
|
}
|
|
|
|
if (memcmp (uncompressed_buf, orig_buf, uncompressed_bufsize) != 0)
|
|
{
|
|
fprintf (stderr, "lzma large: uncompressed data mismatch\n");
|
|
goto fail;
|
|
}
|
|
|
|
printf ("PASS: lzma large\n");
|
|
|
|
spare_buf = malloc (orig_bufsize);
|
|
if (spare_buf == NULL)
|
|
{
|
|
perror ("malloc");
|
|
goto fail;
|
|
}
|
|
|
|
for (i = 0; i < trials; ++i)
|
|
{
|
|
cid = LIBLZMA_CLOCK_GETTIME_ARG;
|
|
if (clock_gettime (cid, &ts1) < 0)
|
|
{
|
|
if (errno == EINVAL)
|
|
return;
|
|
perror ("clock_gettime");
|
|
return;
|
|
}
|
|
|
|
if (!backtrace_uncompress_lzma (state,
|
|
(unsigned char *) compressed_buf,
|
|
compressed_bufsize,
|
|
error_callback_compress, NULL,
|
|
&uncompressed_buf,
|
|
&uncompressed_bufsize))
|
|
{
|
|
fprintf (stderr,
|
|
("lzma large: "
|
|
"benchmark backtrace_uncompress_lzma failed\n"));
|
|
return;
|
|
}
|
|
|
|
if (clock_gettime (cid, &ts2) < 0)
|
|
{
|
|
perror ("clock_gettime");
|
|
return;
|
|
}
|
|
|
|
ctime = (ts2.tv_sec - ts1.tv_sec) * 1000000000;
|
|
ctime += ts2.tv_nsec - ts1.tv_nsec;
|
|
ctimes[i] = ctime;
|
|
|
|
stream = initial_stream;
|
|
|
|
r = lzma_auto_decoder (&stream, UINT64_MAX, 0);
|
|
if (r != LZMA_OK)
|
|
{
|
|
fprintf (stderr, "lzma_stream_decoder failed: %d\n", r);
|
|
goto fail;
|
|
}
|
|
|
|
stream.next_in = compressed_buf;
|
|
stream.avail_in = compressed_bufsize;
|
|
stream.next_out = spare_buf;
|
|
stream.avail_out = orig_bufsize;
|
|
|
|
if (clock_gettime (cid, &ts1) < 0)
|
|
{
|
|
perror("clock_gettime");
|
|
return;
|
|
}
|
|
|
|
do
|
|
{
|
|
r = lzma_code (&stream, LZMA_FINISH);
|
|
if (r != LZMA_OK && r != LZMA_STREAM_END)
|
|
{
|
|
fprintf (stderr, "lzma_code failed: %d\n", r);
|
|
goto fail;
|
|
}
|
|
}
|
|
while (r != LZMA_STREAM_END);
|
|
|
|
if (clock_gettime (cid, &ts2) < 0)
|
|
{
|
|
perror ("clock_gettime");
|
|
return;
|
|
}
|
|
|
|
ztime = (ts2.tv_sec - ts1.tv_sec) * 1000000000;
|
|
ztime += ts2.tv_nsec - ts1.tv_nsec;
|
|
ztimes[i] = ztime;
|
|
}
|
|
|
|
/* Toss the highest and lowest times and average the rest. */
|
|
ctime = average_time (ctimes, trials);
|
|
ztime = average_time (ztimes, trials);
|
|
|
|
printf ("backtrace: %zu ns\n", ctime);
|
|
printf ("liblzma : %zu ns\n", ztime);
|
|
printf ("ratio : %g\n", (double) ztime / (double) ctime);
|
|
|
|
return;
|
|
|
|
fail:
|
|
printf ("FAIL: lzma large\n");
|
|
++failures;
|
|
|
|
if (orig_buf != NULL)
|
|
free (orig_buf);
|
|
if (compressed_buf != NULL)
|
|
free (compressed_buf);
|
|
if (uncompressed_buf != NULL)
|
|
free (uncompressed_buf);
|
|
|
|
#else /* !HAVE_LIBLZMA */
|
|
|
|
printf ("UNSUPPORTED: lzma large\n");
|
|
|
|
#endif /* !HAVE_LIBLZMA */
|
|
}
|
|
|
|
int
|
|
main (int argc ATTRIBUTE_UNUSED, char **argv)
|
|
{
|
|
struct backtrace_state *state;
|
|
|
|
state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
|
|
error_callback_create, NULL);
|
|
|
|
test_samples (state);
|
|
test_large (state);
|
|
|
|
exit (failures != 0 ? EXIT_FAILURE : EXIT_SUCCESS);
|
|
}
|