e6fd79f379
This is the first of a 2-part patch set that fixes slow DSO sorting behavior in the dynamic loader, as reported in BZ #17645. In order to facilitate such a large modification to the dynamic loader, this first patch implements a testing framework for validating shared object sorting behavior, to enable comparison between old/new sorting algorithms, and any later enhancements. This testing infrastructure consists of a Python script scripts/dso-ordering-test.py' which takes in a description language, consisting of strings that describe a set of link dependency relations between DSOs, and generates testcase programs and Makefile fragments to automatically test the described situation, for example: a->b->c->d # four objects linked one after another a->[bc]->d;b->c # a depends on b and c, which both depend on d, # b depends on c (b,c linked to object a in fixed order) a->b->c;{+a;%a;-a} # a, b, c serially dependent, main program uses # dlopen/dlsym/dlclose on object a a->b->c;{}!->[abc] # a, b, c serially dependent; multiple tests generated # to test all permutations of a, b, c ordering linked # to main program (Above is just a short description of what the script can do, more documentation is in the script comments.) Two files containing several new tests, elf/dso-sort-tests-[12].def are added, including test scenarios for BZ #15311 and Redhat issue #1162810 [1]. Due to the nature of dynamic loader tests, where the sorting behavior and test output occurs before/after main(), generating testcases to use support/test-driver.c does not suffice to control meaningful timeout for ld.so. Therefore a new utility program 'support/test-run-command', based on test-driver.c/support_test_main.c has been added. This does the same testcase control, but for a program specified through a command-line rather than at the source code level. This utility is used to run the dynamic loader testcases generated by dso-ordering-test.py. [1] https://bugzilla.redhat.com/show_bug.cgi?id=1162810 Signed-off-by: Chung-Lin Tang <cltang@codesourcery.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
86 lines
3 KiB
C
86 lines
3 KiB
C
/* Interfaces for the test driver.
|
|
Copyright (C) 2016-2021 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, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef SUPPORT_TEST_DRIVER_H
|
|
#define SUPPORT_TEST_DRIVER_H
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__BEGIN_DECLS
|
|
|
|
struct test_config
|
|
{
|
|
void (*prepare_function) (int argc, char **argv);
|
|
int (*test_function) (void);
|
|
int (*test_function_argv) (int argc, char **argv);
|
|
void (*cleanup_function) (void);
|
|
void (*cmdline_function) (int);
|
|
const void *options; /* Custom options if not NULL. */
|
|
int timeout; /* Test timeout in seconds. */
|
|
int expected_status; /* Expected exit status. */
|
|
int expected_signal; /* If non-zero, expect termination by signal. */
|
|
char no_mallopt; /* Boolean flag to disable mallopt. */
|
|
char no_setvbuf; /* Boolean flag to disable setvbuf. */
|
|
char run_command_mode; /* Boolean flag to indicate run-command-mode. */
|
|
const char *optstring; /* Short command line options. */
|
|
};
|
|
|
|
enum
|
|
{
|
|
/* Test exit status which indicates that the feature is
|
|
unsupported. */
|
|
EXIT_UNSUPPORTED = 77,
|
|
|
|
/* Default timeout is twenty seconds. Tests should normally
|
|
complete faster than this, but if they don't, that's abnormal
|
|
(a bug) anyways. */
|
|
DEFAULT_TIMEOUT = 20,
|
|
|
|
/* Used for command line argument parsing. */
|
|
OPT_DIRECT = 1000,
|
|
OPT_TESTDIR,
|
|
};
|
|
|
|
/* Options provided by the test driver. */
|
|
#define TEST_DEFAULT_OPTIONS \
|
|
{ "verbose", no_argument, NULL, 'v' }, \
|
|
{ "direct", no_argument, NULL, OPT_DIRECT }, \
|
|
{ "test-dir", required_argument, NULL, OPT_TESTDIR }, \
|
|
|
|
/* The directory the test should use for temporary files. */
|
|
extern const char *test_dir;
|
|
|
|
/* The number of --verbose arguments specified during program
|
|
invocation. This variable can be used to control the verbosity of
|
|
tests. */
|
|
extern unsigned int test_verbose;
|
|
|
|
/* Output that is only emitted if at least one --verbose argument was
|
|
specified. */
|
|
#define verbose_printf(...) \
|
|
do { \
|
|
if (test_verbose > 0) \
|
|
printf (__VA_ARGS__); \
|
|
} while (0);
|
|
|
|
int support_test_main (int argc, char **argv, const struct test_config *);
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* SUPPORT_TEST_DRIVER_H */
|