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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/testcore/lib/synctest.H $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* COPYRIGHT International Business Machines Corp. 2011,2012 */
/* */
/* p1 */
/* */
/* Object Code Only (OCO) source materials */
/* Licensed Internal Code Source Materials */
/* IBM HostBoot Licensed Internal Code */
/* */
/* The source code for this program is not published or otherwise */
/* divested of its trade secrets, irrespective of what has been */
/* deposited with the U.S. Copyright Office. */
/* */
/* Origin: 30 */
/* */
/* IBM_PROLOG_END_TAG */
#ifndef __SYNCTEST_H
#define __SYNCTEST_H
/**
* @file synctest.H
*
* @brief Test cases for the sycronization
*/
#include <cxxtest/TestSuite.H>
#include <sys/sync.h>
#include <sys/task.h>
#include <sys/time.h>
#include <utility>
#include <kernel/timemgr.H>
#include <kernel/console.H>
class SyncTest: public CxxTest::TestSuite
{
public:
void testMutex()
{
mutex_init(&mutex);
barrier_init(&barrier, 7);
task_create(func1, this);
task_create(func2, this);
task_create(func2, this);
task_create(func2, this);
task_create(func2, this);
task_create(func2, this);
barrier_wait(&barrier);
TS_TRACE("ALL THREADS ENDED");
}
void testMutexDoubleWait()
{
mutex_init(&mutex);
barrier_init(&barrier, 3);
mutex_lock(&mutex);
task_create(func2, this);
task_create(func2, this);
nanosleep(0,TEN_CTX_SWITCHES_NS);
mutex_unlock(&mutex);
barrier_wait(&barrier);
TS_TRACE("ALL THREADS ENDED");
}
void testBarrier()
{
barrier_t barrier;
barrier_init(&barrier,3);
task_create(func3,&barrier);
task_create(func4,&barrier);
barrier_wait(&barrier);
TS_TRACE("B0");
barrier_destroy(&barrier);
}
void testConditionVariable()
{
mutex_init(&mutex);
sync_cond_init(&cond_var);
counter = 0;
barrier_init(&barrier,4);
TASK_INFO t1 = { this, 1, 0};
TASK_INFO t2 = { this, 2, 0};
TASK_INFO t3 = { this, 3, 0};
t1.tid = task_create(watch_counter, &t1);
t2.tid = task_create(increment, &t2);
t3.tid = task_create(increment, &t3);
barrier_wait(&barrier);
TS_TRACE("Conditional Variable test final count = %ld",counter);
task_wait_tid(t1.tid, NULL, NULL);
task_wait_tid(t2.tid, NULL, NULL);
task_wait_tid(t3.tid, NULL, NULL);
barrier_destroy(&barrier);
sync_cond_destroy(&cond_var);
mutex_destroy(&mutex);
// test is success if it completes w/o hang
}
void testConditionVariableBroadcast()
{
mutex_init(&mutex);
sync_cond_init(&cond_var);
counter = 0;
barrier_init(&barrier,5);
TASK_INFO t1 = { this, 4, 0};
TASK_INFO t2 = { this, 5, 0};
TASK_INFO t3 = { this, 6, 0};
TASK_INFO t4 = { this, 7, 0};
t1.tid = task_create(watch_counter, &t1);
t2.tid = task_create(watch_counter, &t2);
t3.tid = task_create(increment1, &t3);
t4.tid = task_create(increment1, &t4);
barrier_wait(&barrier);
TS_TRACE("Conditional Variable test final count = %ld",counter);
task_wait_tid(t1.tid, NULL, NULL);
task_wait_tid(t2.tid, NULL, NULL);
task_wait_tid(t3.tid, NULL, NULL);
task_wait_tid(t4.tid, NULL, NULL);
barrier_destroy(&barrier);
sync_cond_destroy(&cond_var);
mutex_destroy(&mutex);
// test is success if it completes w/o hang
}
private:
enum
{
TO_COUNT = 10,
COUNT_SIGNAL = 13
};
struct TASK_INFO { SyncTest* testobj; size_t id; tid_t tid; };
mutex_t mutex;
barrier_t barrier;
sync_cond_t cond_var;
size_t counter;
static void* func1(void * i_p)
{
SyncTest * my = (SyncTest *) i_p;
mutex_t * mutex = &(my->mutex);
barrier_t * barrier = &(my->barrier);
mutex_lock(mutex);
nanosleep(0,TEN_CTX_SWITCHES_NS);
TS_TRACE("ME FIRST");
mutex_unlock(mutex);
barrier_wait(barrier);
return NULL;
}
static void* func2(void * i_p)
{
SyncTest * my = (SyncTest *) i_p;
mutex_t * mutex = &(my->mutex);
barrier_t * barrier = &(my->barrier);
mutex_lock(mutex);
TS_TRACE("ME NEXT");
mutex_unlock(mutex);
barrier_wait(barrier);
return NULL;
}
static void* func3(void * i_p)
{
barrier_t * barrier = (barrier_t *) i_p;
barrier_wait(barrier);
TS_TRACE("B1");
return NULL;
}
static void* func4(void * i_p)
{
barrier_t * barrier = (barrier_t *) i_p;
barrier_wait(barrier);
TS_TRACE("B2");
return NULL;
}
static void* watch_counter(void * i_p)
{
TASK_INFO * info = (TASK_INFO *) i_p;
SyncTest * my = info->testobj;
TS_TRACE("CONDVAR task %ld. Start watching counter",info->id);
mutex_lock(&(my->mutex));
while(my->counter < COUNT_SIGNAL)
{
sync_cond_wait(&(my->cond_var),&(my->mutex));
TS_TRACE("CONDVAR task %ld. Condition signal received",
info->id);
my->counter += 100;
TS_TRACE("CONDVAR task %ld. Counter = %ld",
info->id,my->counter);
}
mutex_unlock(&(my->mutex));
barrier_wait(&(my->barrier));
return NULL;
}
static void* increment(void * i_p)
{
TASK_INFO * info = (TASK_INFO *) i_p;
SyncTest * my = info->testobj;
TS_TRACE("CONDVAR task %ld. start Increment counter",info->id);
for(size_t i = 0; i < TO_COUNT; ++i)
{
mutex_lock(&(my->mutex));
++(my->counter);
if(my->counter == COUNT_SIGNAL)
{
sync_cond_signal(&(my->cond_var));
TS_TRACE("CONDVAR task %ld. INCR counter = %ld Threshold"
" reached",info->id,my->counter);
}
TS_TRACE("CONDVAR task %ld INCR counter = %ld Unlocking mutex",
info->id, my->counter);
mutex_unlock(&(my->mutex));
nanosleep(0,TEN_CTX_SWITCHES_NS);
}
barrier_wait(&(my->barrier));
return NULL;
}
static void* increment1(void * i_p)
{
TASK_INFO * info = (TASK_INFO *) i_p;
SyncTest * my = info->testobj;
TS_TRACE("CONDVAR task %ld. start Increment counter",info->id);
for(size_t i = 0; i < TO_COUNT; ++i)
{
mutex_lock(&(my->mutex));
++(my->counter);
if(my->counter == COUNT_SIGNAL)
{
sync_cond_broadcast(&(my->cond_var));
TS_TRACE("CONDVAR task %ld. INCR counter = %ld Threshold"
" reached",info->id,my->counter);
}
TS_TRACE("CONDVAR task %ld INCR counter = %ld Unlocking mutex",
info->id, my->counter);
mutex_unlock(&(my->mutex));
nanosleep(0,TEN_CTX_SWITCHES_NS);
}
barrier_wait(&(my->barrier));
return NULL;
}
};
#endif
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