Ichthyostega
806db414dd
* Lumiera source code always was copyrighted by individual contributors * there is no entity "Lumiera.org" which holds any copyrights * Lumiera source code is provided under the GPL Version 2+ == Explanations == Lumiera as a whole is distributed under Copyleft, GNU General Public License Version 2 or above. For this to become legally effective, the ''File COPYING in the root directory is sufficient.'' The licensing header in each file is not strictly necessary, yet considered good practice; attaching a licence notice increases the likeliness that this information is retained in case someone extracts individual code files. However, it is not by the presence of some text, that legally binding licensing terms become effective; rather the fact matters that a given piece of code was provably copyrighted and published under a license. Even reformatting the code, renaming some variables or deleting parts of the code will not alter this legal situation, but rather creates a derivative work, which is likewise covered by the GPL! The most relevant information in the file header is the notice regarding the time of the first individual copyright claim. By virtue of this initial copyright, the first author is entitled to choose the terms of licensing. All further modifications are permitted and covered by the License. The specific wording or format of the copyright header is not legally relevant, as long as the intention to publish under the GPL remains clear. The extended wording was based on a recommendation by the FSF. It can be shortened, because the full terms of the license are provided alongside the distribution, in the file COPYING.
173 lines
4.1 KiB
C
173 lines
4.1 KiB
C
/*
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TEST-LOCKING - test locking functions
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Copyright (C)
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2008, Christian Thaeter <ct@pipapo.org>
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**Lumiera** is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version. See the file COPYING for further details.
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* *****************************************************************/
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/** @file test-locking.c
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** C unit test to cover convenience setup for POSIX locking primitives
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** These convenience macros are intended for use in low-level C code,
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** where minimal and precise locking is relevant for performance reasons.
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** @see mutex.h
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** @see condition.h
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*/
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#include "lib/test/test.h"
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#include "lib/mutex.h"
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#include "lib/recmutex.h"
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#include <stdio.h>
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#include <string.h>
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TESTS_BEGIN
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TEST (mutexsection)
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{
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lumiera_mutex m;
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lumiera_mutex_init (&m, "mutexsection", &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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LUMIERA_MUTEX_SECTION (NOBUG_ON, &m)
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{
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printf ("mutex locked section 1\n");
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}
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LUMIERA_MUTEX_SECTION (NOBUG_ON, &m)
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{
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printf ("mutex locked section 2\n");
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}
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lumiera_mutex_destroy (&m, &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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}
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TEST (mutexforgotunlock)
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{
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lumiera_mutex m;
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lumiera_mutex_init (&m, "mutexforgotunlock", &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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LUMIERA_MUTEX_SECTION (NOBUG_ON, &m)
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{
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break; // MUTEX_SECTIONS must not be left by a jump
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}
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lumiera_mutex_destroy (&m, &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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}
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TEST (mutexexplicitunlock)
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{
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lumiera_mutex m;
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lumiera_mutex_init (&m, "mutexforgotunlock", &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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LUMIERA_MUTEX_SECTION (NOBUG_ON, &m)
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{
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ECHO("mutex locked section");
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LUMIERA_MUTEX_SECTION_UNLOCK;
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break;
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}
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lumiera_mutex_destroy (&m, &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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}
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TEST (nestedmutexsection)
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{
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lumiera_mutex m;
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lumiera_mutex_init (&m, "m_mutexsection", &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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lumiera_mutex n;
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lumiera_mutex_init (&n, "n_mutexsection", &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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LUMIERA_MUTEX_SECTION (NOBUG_ON, &m)
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{
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printf ("outer mutex locked section\n");
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LUMIERA_MUTEX_SECTION (NOBUG_ON, &n)
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{
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printf ("inner mutex locked section\n");
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}
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}
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lumiera_mutex_destroy (&n, &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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lumiera_mutex_destroy (&m, &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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}
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TEST (chainedmutexsection)
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{
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lumiera_mutex m;
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lumiera_mutex_init (&m, "m_mutexsection", &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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lumiera_mutex n;
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lumiera_mutex_init (&n, "n_mutexsection", &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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LUMIERA_MUTEX_SECTION (NOBUG_ON, &m)
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{
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printf ("outer mutex locked section\n");
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LUMIERA_MUTEX_SECTION_CHAIN (NOBUG_ON, &n)
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{
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printf ("inner but not outer mutex locked section\n");
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}
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}
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lumiera_mutex_destroy (&n, &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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lumiera_mutex_destroy (&m, &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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}
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TEST (recursivemutexsection)
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{
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lumiera_recmutex m;
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lumiera_recmutex_init (&m, "m_recmutexsection", &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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LUMIERA_RECMUTEX_SECTION (NOBUG_ON, &m)
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{
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printf ("recmutex locked once\n");
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LUMIERA_RECMUTEX_SECTION (NOBUG_ON, &m)
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{
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printf ("recmutex locked twice\n");
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}
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}
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lumiera_recmutex_destroy (&m, &NOBUG_FLAG(NOBUG_ON), NOBUG_CONTEXT);
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}
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/* ====== 10/2023 : partially dismantled
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*
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* After switching to C++14 Threads and Locking (#1279),
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* some backend-services are no longer used...
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* - rwlocksection
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* - rwlockforgotunlock
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* - rwdeadlockwr
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* - rwdeadlockrw
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* - rwlockdeadlockwr
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* - rwlockdeadlockrw
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* - conditionops
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* - conditionsection
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* - conditionforgotunlock
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* - condition signaling (planned)
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* - condition broadcasting (planned)
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* - recconditionops
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* - recconditionsection
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* - recconditionforgotunlock
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* - chainedrecconditionsection
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* - nestedrecconditionsection
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* - reccondition signaling (planned)
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* - reccondition broadcasting (planned)
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*
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*/
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TESTS_END
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