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authorBruno Haible <bruno@clisp.org>2019-06-20 04:38:06 +0200
committerBruno Haible <bruno@clisp.org>2019-06-20 04:46:56 +0200
commit4a440ef9b6c2568f54b0487b1ebaffc597efb399 (patch)
tree9c1181a24027d84f7362de96cac31a9b4124ca04
parent6ac18d06d0234f85c41af69fb6319592e2d4f5c6 (diff)
downloadgnulib-4a440ef9b6c2568f54b0487b1ebaffc597efb399.tar.gz
gnulib-4a440ef9b6c2568f54b0487b1ebaffc597efb399.tar.bz2
mtx: Add tests.
* tests/test-mtx.c: New file, based on tests/test-lock.c. * tests/test-call_once.c: New file, based on tests/test-once.c. * modules/mtx-tests: New file.
-rw-r--r--ChangeLog7
-rw-r--r--modules/mtx-tests19
-rw-r--r--tests/test-call_once.c43
-rw-r--r--tests/test-mtx.c649
4 files changed, 718 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index b17e7510e7..1f658d148e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
2019-06-20 Bruno Haible <bruno@clisp.org>
+ mtx: Add tests.
+ * tests/test-mtx.c: New file, based on tests/test-lock.c.
+ * tests/test-call_once.c: New file, based on tests/test-once.c.
+ * modules/mtx-tests: New file.
+
+2019-06-20 Bruno Haible <bruno@clisp.org>
+
thrd: Add tests.
* tests/test-thrd_create.c: New file, based on
tests/test-thread_create.c.
diff --git a/modules/mtx-tests b/modules/mtx-tests
new file mode 100644
index 0000000000..7714ebc0cc
--- /dev/null
+++ b/modules/mtx-tests
@@ -0,0 +1,19 @@
+Files:
+tests/test-mtx.c
+tests/test-call_once.c
+tests/macros.h
+
+Depends-on:
+thrd
+lock
+stdint
+
+configure.ac:
+AC_CHECK_HEADERS_ONCE([semaphore.h])
+AC_CHECK_DECLS_ONCE([alarm])
+
+Makefile.am:
+TESTS += test-mtx test-call_once
+check_PROGRAMS += test-mtx test-call_once
+test_mtx_LDADD = $(LDADD) @LIBSTDTHREAD@ @LIBTHREAD@
+test_call_once_LDADD = $(LDADD) @LIBSTDTHREAD@
diff --git a/tests/test-call_once.c b/tests/test-call_once.c
new file mode 100644
index 0000000000..8d2b785038
--- /dev/null
+++ b/tests/test-call_once.c
@@ -0,0 +1,43 @@
+/* Test of once-only execution in multithreaded situations.
+ Copyright (C) 2018-2019 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
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2018. */
+
+#include <config.h>
+
+#include <threads.h>
+
+#include "macros.h"
+
+static once_flag a_once = ONCE_FLAG_INIT;
+
+static int a;
+
+static void
+a_init (void)
+{
+ a = 42;
+}
+
+int
+main ()
+{
+ call_once (&a_once, a_init);
+
+ ASSERT (a == 42);
+
+ return 0;
+}
diff --git a/tests/test-mtx.c b/tests/test-mtx.c
new file mode 100644
index 0000000000..0d74492999
--- /dev/null
+++ b/tests/test-mtx.c
@@ -0,0 +1,649 @@
+/* Test of locking in multithreaded situations.
+ Copyright (C) 2005, 2008-2019 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
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005. */
+
+#include <config.h>
+
+/* Whether to enable locking.
+ Uncomment this to get a test program without locking, to verify that
+ it crashes. */
+#define ENABLE_LOCKING 1
+
+/* Which tests to perform.
+ Uncomment some of these, to verify that all tests crash if no locking
+ is enabled. */
+#define DO_TEST_LOCK 1
+#define DO_TEST_RECURSIVE_LOCK 1
+#define DO_TEST_ONCE 1
+
+/* Whether to help the scheduler through explicit thrd_yield().
+ 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
+
+/* Number of simultaneous threads. */
+#define THREAD_COUNT 10
+
+/* Number of operations performed in each thread.
+ This is quite high, because with a smaller count, say 5000, we often get
+ an "OK" result even without ENABLE_LOCKING (on Linux/x86). */
+#define REPEAT_COUNT 50000
+
+#include <threads.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "glthread/lock.h"
+
+#if USE_SEMAPHORE
+# include <errno.h>
+# include <fcntl.h>
+# include <semaphore.h>
+# include <unistd.h>
+#endif
+
+#if HAVE_DECL_ALARM
+# include <signal.h>
+# include <unistd.h>
+#endif
+
+#include "macros.h"
+
+#if ENABLE_DEBUGGING
+# define dbgprintf printf
+#else
+# define dbgprintf if (0) printf
+#endif
+
+#if EXPLICIT_YIELD
+# define yield() thrd_yield ()
+#else
+# 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 {
+ mtx_t lock;
+ int value;
+};
+static void
+init_atomic_int (struct atomic_int *ai)
+{
+ ASSERT (mtx_init (&ai->lock, mtx_plain) == thrd_success);
+}
+static int
+get_atomic_int_value (struct atomic_int *ai)
+{
+ ASSERT (mtx_lock (&ai->lock) == thrd_success);
+ int ret = ai->value;
+ ASSERT (mtx_unlock (&ai->lock) == thrd_success);
+ return ret;
+}
+static void
+set_atomic_int_value (struct atomic_int *ai, int new_value)
+{
+ ASSERT (mtx_lock (&ai->lock) == thrd_success);
+ ai->value = new_value;
+ ASSERT (mtx_unlock (&ai->lock) == thrd_success);
+}
+#endif
+
+/* Returns a reference to the current thread as a pointer, for debugging. */
+#if defined __MVS__
+ /* On IBM z/OS, pthread_t is a struct with an 8-byte '__' field.
+ The first three bytes of this field appear to uniquely identify a
+ pthread_t, though not necessarily representing a pointer. */
+# define thrd_current_pointer() (*((void **) thrd_current ().__))
+#elif defined __sun
+ /* On Solaris, thrd_t is merely an 'unsigned int'. */
+# define thrd_current_pointer() ((void *) (uintptr_t) thrd_current ())
+#else
+# define thrd_current_pointer() ((void *) thrd_current ())
+#endif
+
+#define ACCOUNT_COUNT 4
+
+static int account[ACCOUNT_COUNT];
+
+static int
+random_account (void)
+{
+ return ((unsigned int) rand () >> 3) % ACCOUNT_COUNT;
+}
+
+static void
+check_accounts (void)
+{
+ int i, sum;
+
+ sum = 0;
+ for (i = 0; i < ACCOUNT_COUNT; i++)
+ sum += account[i];
+ if (sum != ACCOUNT_COUNT * 1000)
+ abort ();
+}
+
+
+/* ------------------- Test normal (non-recursive) locks ------------------- */
+
+/* Test normal locks by having several bank accounts and several threads
+ which shuffle around money between the accounts and another thread
+ checking that all the money is still there. */
+
+static mtx_t my_lock;
+
+static int
+lock_mutator_thread (void *arg)
+{
+ int repeat;
+
+ for (repeat = REPEAT_COUNT; repeat > 0; repeat--)
+ {
+ int i1, i2, value;
+
+ dbgprintf ("Mutator %p before lock\n", thrd_current_pointer ());
+ ASSERT (mtx_lock (&my_lock) == thrd_success);
+ dbgprintf ("Mutator %p after lock\n", thrd_current_pointer ());
+
+ i1 = random_account ();
+ i2 = random_account ();
+ value = ((unsigned int) rand () >> 3) % 10;
+ account[i1] += value;
+ account[i2] -= value;
+
+ dbgprintf ("Mutator %p before unlock\n", thrd_current_pointer ());
+ ASSERT (mtx_unlock (&my_lock) == thrd_success);
+ dbgprintf ("Mutator %p after unlock\n", thrd_current_pointer ());
+
+ dbgprintf ("Mutator %p before check lock\n", thrd_current_pointer ());
+ ASSERT (mtx_lock (&my_lock) == thrd_success);
+ check_accounts ();
+ ASSERT (mtx_unlock (&my_lock) == thrd_success);
+ dbgprintf ("Mutator %p after check unlock\n", thrd_current_pointer ());
+
+ yield ();
+ }
+
+ dbgprintf ("Mutator %p dying.\n", thrd_current_pointer ());
+ return 0;
+}
+
+static struct atomic_int lock_checker_done;
+
+static int
+lock_checker_thread (void *arg)
+{
+ while (get_atomic_int_value (&lock_checker_done) == 0)
+ {
+ dbgprintf ("Checker %p before check lock\n", thrd_current_pointer ());
+ ASSERT (mtx_lock (&my_lock) == thrd_success);
+ check_accounts ();
+ ASSERT (mtx_unlock (&my_lock) == thrd_success);
+ dbgprintf ("Checker %p after check unlock\n", thrd_current_pointer ());
+
+ yield ();
+ }
+
+ dbgprintf ("Checker %p dying.\n", thrd_current_pointer ());
+ return 0;
+}
+
+static void
+test_mtx_plain (void)
+{
+ int i;
+ thrd_t checkerthread;
+ thrd_t threads[THREAD_COUNT];
+
+ /* Initialization. */
+ for (i = 0; i < ACCOUNT_COUNT; i++)
+ account[i] = 1000;
+ init_atomic_int (&lock_checker_done);
+ set_atomic_int_value (&lock_checker_done, 0);
+
+ /* Spawn the threads. */
+ ASSERT (thrd_create (&checkerthread, lock_checker_thread, NULL)
+ == thrd_success);
+ for (i = 0; i < THREAD_COUNT; i++)
+ ASSERT (thrd_create (&threads[i], lock_mutator_thread, NULL)
+ == thrd_success);
+
+ /* Wait for the threads to terminate. */
+ for (i = 0; i < THREAD_COUNT; i++)
+ ASSERT (thrd_join (threads[i], NULL) == thrd_success);
+ set_atomic_int_value (&lock_checker_done, 1);
+ ASSERT (thrd_join (checkerthread, NULL) == thrd_success);
+ check_accounts ();
+}
+
+
+/* -------------------------- Test recursive locks -------------------------- */
+
+/* Test recursive locks by having several bank accounts and several threads
+ which shuffle around money between the accounts (recursively) and another
+ thread checking that all the money is still there. */
+
+static mtx_t my_reclock;
+
+static void
+recshuffle (void)
+{
+ int i1, i2, value;
+
+ dbgprintf ("Mutator %p before lock\n", thrd_current_pointer ());
+ ASSERT (mtx_lock (&my_reclock) == thrd_success);
+ dbgprintf ("Mutator %p after lock\n", thrd_current_pointer ());
+
+ i1 = random_account ();
+ i2 = random_account ();
+ value = ((unsigned int) rand () >> 3) % 10;
+ account[i1] += value;
+ account[i2] -= value;
+
+ /* Recursive with probability 0.5. */
+ if (((unsigned int) rand () >> 3) % 2)
+ recshuffle ();
+
+ dbgprintf ("Mutator %p before unlock\n", thrd_current_pointer ());
+ ASSERT (mtx_unlock (&my_reclock) == thrd_success);
+ dbgprintf ("Mutator %p after unlock\n", thrd_current_pointer ());
+}
+
+static int
+reclock_mutator_thread (void *arg)
+{
+ int repeat;
+
+ for (repeat = REPEAT_COUNT; repeat > 0; repeat--)
+ {
+ recshuffle ();
+
+ dbgprintf ("Mutator %p before check lock\n", thrd_current_pointer ());
+ ASSERT (mtx_lock (&my_reclock) == thrd_success);
+ check_accounts ();
+ ASSERT (mtx_unlock (&my_reclock) == thrd_success);
+ dbgprintf ("Mutator %p after check unlock\n", thrd_current_pointer ());
+
+ yield ();
+ }
+
+ dbgprintf ("Mutator %p dying.\n", thrd_current_pointer ());
+ return 0;
+}
+
+static struct atomic_int reclock_checker_done;
+
+static int
+reclock_checker_thread (void *arg)
+{
+ while (get_atomic_int_value (&reclock_checker_done) == 0)
+ {
+ dbgprintf ("Checker %p before check lock\n", thrd_current_pointer ());
+ ASSERT (mtx_lock (&my_reclock) == thrd_success);
+ check_accounts ();
+ ASSERT (mtx_unlock (&my_reclock) == thrd_success);
+ dbgprintf ("Checker %p after check unlock\n", thrd_current_pointer ());
+
+ yield ();
+ }
+
+ dbgprintf ("Checker %p dying.\n", thrd_current_pointer ());
+ return 0;
+}
+
+static void
+test_mtx_recursive (void)
+{
+ int i;
+ thrd_t checkerthread;
+ thrd_t threads[THREAD_COUNT];
+
+ /* Initialization. */
+ for (i = 0; i < ACCOUNT_COUNT; i++)
+ account[i] = 1000;
+ init_atomic_int (&reclock_checker_done);
+ set_atomic_int_value (&reclock_checker_done, 0);
+
+ /* Spawn the threads. */
+ ASSERT (thrd_create (&checkerthread, reclock_checker_thread, NULL)
+ == thrd_success);
+ for (i = 0; i < THREAD_COUNT; i++)
+ ASSERT (thrd_create (&threads[i], reclock_mutator_thread, NULL)
+ == thrd_success);
+
+ /* Wait for the threads to terminate. */
+ for (i = 0; i < THREAD_COUNT; i++)
+ ASSERT (thrd_join (threads[i], NULL) == thrd_success);
+ set_atomic_int_value (&reclock_checker_done, 1);
+ ASSERT (thrd_join (checkerthread, NULL) == thrd_success);
+ check_accounts ();
+}
+
+
+/* ------------------------ Test once-only execution ------------------------ */
+
+/* Test once-only execution by having several threads attempt to grab a
+ once-only task simultaneously (triggered by releasing a read-write lock). */
+
+static once_flag fresh_once = ONCE_FLAG_INIT;
+static int ready[THREAD_COUNT];
+static mtx_t ready_lock[THREAD_COUNT];
+#if ENABLE_LOCKING
+static gl_rwlock_t fire_signal[REPEAT_COUNT];
+#else
+static volatile int fire_signal_state;
+#endif
+static once_flag once_control;
+static int performed;
+static mtx_t performed_lock;
+
+static void
+once_execute (void)
+{
+ ASSERT (mtx_lock (&performed_lock) == thrd_success);
+ performed++;
+ ASSERT (mtx_unlock (&performed_lock) == thrd_success);
+}
+
+static int
+once_contender_thread (void *arg)
+{
+ int id = (int) (intptr_t) arg;
+ int repeat;
+
+ for (repeat = 0; repeat <= REPEAT_COUNT; repeat++)
+ {
+ /* Tell the main thread that we're ready. */
+ ASSERT (mtx_lock (&ready_lock[id]) == thrd_success);
+ ready[id] = 1;
+ ASSERT (mtx_unlock (&ready_lock[id]) == thrd_success);
+
+ if (repeat == REPEAT_COUNT)
+ break;
+
+ dbgprintf ("Contender %p waiting for signal for round %d\n",
+ thrd_current_pointer (), repeat);
+#if ENABLE_LOCKING
+ /* Wait for the signal to go. */
+ gl_rwlock_rdlock (fire_signal[repeat]);
+ /* And don't hinder the others (if the scheduler is unfair). */
+ gl_rwlock_unlock (fire_signal[repeat]);
+#else
+ /* Wait for the signal to go. */
+ while (fire_signal_state <= repeat)
+ yield ();
+#endif
+ dbgprintf ("Contender %p got the signal for round %d\n",
+ thrd_current_pointer (), repeat);
+
+ /* Contend for execution. */
+ call_once (&once_control, once_execute);
+ }
+
+ return 0;
+}
+
+static void
+test_once (void)
+{
+ int i, repeat;
+ thrd_t threads[THREAD_COUNT];
+
+ /* Initialize all variables. */
+ for (i = 0; i < THREAD_COUNT; i++)
+ {
+ ready[i] = 0;
+ ASSERT (mtx_init (&ready_lock[i], mtx_plain) == thrd_success);
+ }
+#if ENABLE_LOCKING
+ for (i = 0; i < REPEAT_COUNT; i++)
+ gl_rwlock_init (fire_signal[i]);
+#else
+ 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++)
+ ASSERT (thrd_create (&threads[i],
+ once_contender_thread, (void *) (intptr_t) i)
+ == thrd_success);
+
+ for (repeat = 0; repeat <= REPEAT_COUNT; repeat++)
+ {
+ /* Wait until every thread is ready. */
+ dbgprintf ("Main thread before synchronizing for round %d\n", repeat);
+ for (;;)
+ {
+ int ready_count = 0;
+ for (i = 0; i < THREAD_COUNT; i++)
+ {
+ ASSERT (mtx_lock (&ready_lock[i]) == thrd_success);
+ ready_count += ready[i];
+ ASSERT (mtx_unlock (&ready_lock[i]) == thrd_success);
+ }
+ if (ready_count == THREAD_COUNT)
+ break;
+ yield ();
+ }
+ dbgprintf ("Main thread after synchronizing for round %d\n", repeat);
+
+ if (repeat > 0)
+ {
+ /* Check that exactly one thread executed the once_execute()
+ function. */
+ if (performed != 1)
+ abort ();
+ }
+
+ if (repeat == REPEAT_COUNT)
+ break;
+
+ /* Preparation for the next round: Initialize once_control. */
+ memcpy (&once_control, &fresh_once, sizeof (once_flag));
+
+ /* Preparation for the next round: Reset the performed counter. */
+ performed = 0;
+
+ /* Preparation for the next round: Reset the ready flags. */
+ for (i = 0; i < THREAD_COUNT; i++)
+ {
+ ASSERT (mtx_lock (&ready_lock[i]) == thrd_success);
+ ready[i] = 0;
+ ASSERT (mtx_unlock (&ready_lock[i]) == thrd_success);
+ }
+
+ /* Signal all threads simultaneously. */
+ dbgprintf ("Main thread giving signal for round %d\n", repeat);
+#if ENABLE_LOCKING
+ gl_rwlock_unlock (fire_signal[repeat]);
+#else
+ fire_signal_state = repeat + 1;
+#endif
+ }
+
+ /* Wait for the threads to terminate. */
+ for (i = 0; i < THREAD_COUNT; i++)
+ ASSERT (thrd_join (threads[i], NULL) == thrd_success);
+}
+
+
+/* -------------------------------------------------------------------------- */
+
+int
+main ()
+{
+#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
+
+ ASSERT (mtx_init (&my_lock, mtx_plain) == thrd_success);
+ ASSERT (mtx_init (&my_reclock, mtx_plain | mtx_recursive) == thrd_success);
+ ASSERT (mtx_init (&performed_lock, mtx_plain) == thrd_success);
+
+#if DO_TEST_LOCK
+ printf ("Starting test_mtx_plain ..."); fflush (stdout);
+ test_mtx_plain ();
+ printf (" OK\n"); fflush (stdout);
+#endif
+#if DO_TEST_RECURSIVE_LOCK
+ printf ("Starting test_mtx_recursive ..."); fflush (stdout);
+ test_mtx_recursive ();
+ printf (" OK\n"); fflush (stdout);
+#endif
+#if DO_TEST_ONCE
+ printf ("Starting test_once ..."); fflush (stdout);
+ test_once ();
+ printf (" OK\n"); fflush (stdout);
+#endif
+
+ return 0;
+}

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