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authorJörg Frings-Fürst <debian@jff.email>2022-01-08 11:51:07 +0100
committerJörg Frings-Fürst <debian@jff.email>2022-01-08 11:51:07 +0100
commitbe8efac78d067c138ad8dda03df4336e73f94887 (patch)
tree5f5254a628ba0ef72065b93d949d1c985742ea8e /tests/test-lock.c
parent7b65dbd4ebade81d504cfe5e681292a58ad1fdf0 (diff)
New upstream version 1.0upstream/1.0
Diffstat (limited to 'tests/test-lock.c')
-rw-r--r--tests/test-lock.c202
1 files changed, 31 insertions, 171 deletions
diff --git a/tests/test-lock.c b/tests/test-lock.c
index 52ee009e..57714742 100644
--- a/tests/test-lock.c
+++ b/tests/test-lock.c
@@ -1,5 +1,5 @@
/* Test of locking in multithreaded situations.
- Copyright (C) 2005, 2008-2018 Free Software Foundation, Inc.
+ Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -18,16 +18,16 @@
#include <config.h>
-#if USE_POSIX_THREADS || USE_SOLARIS_THREADS || USE_PTH_THREADS || USE_WINDOWS_THREADS
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+#if USE_ISOC_THREADS
+# define TEST_ISOC_THREADS 1
+#endif
#if USE_POSIX_THREADS
# define TEST_POSIX_THREADS 1
#endif
-#if USE_SOLARIS_THREADS
-# define TEST_SOLARIS_THREADS 1
-#endif
-#if USE_PTH_THREADS
-# define TEST_PTH_THREADS 1
+#if USE_ISOC_AND_POSIX_THREADS
+# define TEST_ISOC_AND_POSIX_THREADS 1
#endif
#if USE_WINDOWS_THREADS
# define TEST_WINDOWS_THREADS 1
@@ -50,28 +50,6 @@
Uncomment this to see if the operating system has a fair scheduler. */
#define EXPLICIT_YIELD 1
-/* Whether to use 'volatile' on some variables that communicate information
- between threads. If set to 0, a semaphore or a lock is used to protect
- these variables. If set to 1, 'volatile' is used; this is theoretically
- equivalent but can lead to much slower execution (e.g. 30x slower total
- run time on a 40-core machine), because 'volatile' does not imply any
- synchronization/communication between different CPUs. */
-#define USE_VOLATILE 0
-
-#if USE_POSIX_THREADS && HAVE_SEMAPHORE_H
-/* Whether to use a semaphore to communicate information between threads.
- If set to 0, a lock is used. If set to 1, a semaphore is used.
- Uncomment this to reduce the dependencies of this test. */
-# define USE_SEMAPHORE 1
-/* Mac OS X provides only named semaphores (sem_open); its facility for
- unnamed semaphores (sem_init) does not work. */
-# if defined __APPLE__ && defined __MACH__
-# define USE_NAMED_SEMAPHORE 1
-# else
-# define USE_UNNAMED_SEMAPHORE 1
-# endif
-#endif
-
/* Whether to print debugging messages. */
#define ENABLE_DEBUGGING 0
@@ -83,27 +61,28 @@
an "OK" result even without ENABLE_LOCKING (on Linux/x86). */
#define REPEAT_COUNT 50000
+#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if !ENABLE_LOCKING
+# undef USE_ISOC_THREADS
# undef USE_POSIX_THREADS
-# undef USE_SOLARIS_THREADS
-# undef USE_PTH_THREADS
+# undef USE_ISOC_AND_POSIX_THREADS
# undef USE_WINDOWS_THREADS
#endif
#include "glthread/lock.h"
#if !ENABLE_LOCKING
+# if TEST_ISOC_THREADS
+# define USE_ISOC_THREADS 1
+# endif
# if TEST_POSIX_THREADS
# define USE_POSIX_THREADS 1
# endif
-# if TEST_SOLARIS_THREADS
-# define USE_SOLARIS_THREADS 1
-# endif
-# if TEST_PTH_THREADS
-# define USE_PTH_THREADS 1
+# if TEST_ISOC_AND_POSIX_THREADS
+# define USE_ISOC_AND_POSIX_THREADS 1
# endif
# if TEST_WINDOWS_THREADS
# define USE_WINDOWS_THREADS 1
@@ -112,13 +91,14 @@
#include "glthread/thread.h"
#include "glthread/yield.h"
-#if USE_SEMAPHORE
-# include <errno.h>
-# include <fcntl.h>
-# include <semaphore.h>
+
+#if HAVE_DECL_ALARM
+# include <signal.h>
# include <unistd.h>
#endif
+#include "atomic-int-gnulib.h"
+
#if ENABLE_DEBUGGING
# define dbgprintf printf
#else
@@ -131,132 +111,6 @@
# define yield()
#endif
-#if USE_VOLATILE
-struct atomic_int {
- volatile int value;
-};
-static void
-init_atomic_int (struct atomic_int *ai)
-{
-}
-static int
-get_atomic_int_value (struct atomic_int *ai)
-{
- return ai->value;
-}
-static void
-set_atomic_int_value (struct atomic_int *ai, int new_value)
-{
- ai->value = new_value;
-}
-#elif USE_SEMAPHORE
-/* This atomic_int implementation can only support the values 0 and 1.
- It is initially 0 and can be set to 1 only once. */
-# if USE_UNNAMED_SEMAPHORE
-struct atomic_int {
- sem_t semaphore;
-};
-#define atomic_int_semaphore(ai) (&(ai)->semaphore)
-static void
-init_atomic_int (struct atomic_int *ai)
-{
- sem_init (&ai->semaphore, 0, 0);
-}
-# endif
-# if USE_NAMED_SEMAPHORE
-struct atomic_int {
- sem_t *semaphore;
-};
-#define atomic_int_semaphore(ai) ((ai)->semaphore)
-static void
-init_atomic_int (struct atomic_int *ai)
-{
- sem_t *s;
- unsigned int count;
- for (count = 0; ; count++)
- {
- char name[80];
- /* Use getpid() in the name, so that different processes running at the
- same time will not interfere. Use ai in the name, so that different
- atomic_int in the same process will not interfere. Use a count in
- the name, so that even in the (unlikely) case that a semaphore with
- the specified name already exists, we can try a different name. */
- sprintf (name, "test-lock-%lu-%p-%u",
- (unsigned long) getpid (), ai, count);
- s = sem_open (name, O_CREAT | O_EXCL, 0600, 0);
- if (s == SEM_FAILED)
- {
- if (errno == EEXIST)
- /* Retry with a different name. */
- continue;
- else
- {
- perror ("sem_open failed");
- abort ();
- }
- }
- else
- {
- /* Try not to leave a semaphore hanging around on the file system
- eternally, if we can avoid it. */
- sem_unlink (name);
- break;
- }
- }
- ai->semaphore = s;
-}
-# endif
-static int
-get_atomic_int_value (struct atomic_int *ai)
-{
- if (sem_trywait (atomic_int_semaphore (ai)) == 0)
- {
- if (sem_post (atomic_int_semaphore (ai)))
- abort ();
- return 1;
- }
- else if (errno == EAGAIN)
- return 0;
- else
- abort ();
-}
-static void
-set_atomic_int_value (struct atomic_int *ai, int new_value)
-{
- if (new_value == 0)
- /* It's already initialized with 0. */
- return;
- /* To set the value 1: */
- if (sem_post (atomic_int_semaphore (ai)))
- abort ();
-}
-#else
-struct atomic_int {
- gl_lock_define (, lock)
- int value;
-};
-static void
-init_atomic_int (struct atomic_int *ai)
-{
- gl_lock_init (ai->lock);
-}
-static int
-get_atomic_int_value (struct atomic_int *ai)
-{
- gl_lock_lock (ai->lock);
- int ret = ai->value;
- gl_lock_unlock (ai->lock);
- return ret;
-}
-static void
-set_atomic_int_value (struct atomic_int *ai, int new_value)
-{
- gl_lock_lock (ai->lock);
- ai->value = new_value;
- gl_lock_unlock (ai->lock);
-}
-#endif
-
#define ACCOUNT_COUNT 4
static int account[ACCOUNT_COUNT];
@@ -587,7 +441,7 @@ once_execute (void)
static void *
once_contender_thread (void *arg)
{
- int id = (int) (long) arg;
+ int id = (int) (intptr_t) arg;
int repeat;
for (repeat = 0; repeat <= REPEAT_COUNT; repeat++)
@@ -641,13 +495,16 @@ test_once (void)
fire_signal_state = 0;
#endif
+#if ENABLE_LOCKING
/* Block all fire_signals. */
for (i = REPEAT_COUNT-1; i >= 0; i--)
gl_rwlock_wrlock (fire_signal[i]);
+#endif
/* Spawn the threads. */
for (i = 0; i < THREAD_COUNT; i++)
- threads[i] = gl_thread_create (once_contender_thread, (void *) (long) i);
+ threads[i] =
+ gl_thread_create (once_contender_thread, (void *) (intptr_t) i);
for (repeat = 0; repeat <= REPEAT_COUNT; repeat++)
{
@@ -713,9 +570,12 @@ test_once (void)
int
main ()
{
-#if TEST_PTH_THREADS
- if (!pth_init ())
- abort ();
+#if HAVE_DECL_ALARM
+ /* Declare failure if test takes too long, by using default abort
+ caused by SIGALRM. */
+ int alarm_value = 600;
+ signal (SIGALRM, SIG_DFL);
+ alarm (alarm_value);
#endif
#if DO_TEST_LOCK