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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/testcore/kernel/taskwaittest.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2011,2018 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
/** @file tasktest.H
* @brief Test cases for task interfaces.
*/
#include <cxxtest/TestSuite.H>
#include <sys/task.h>
#include <sys/time.h>
#include <errno.h>
#include <kernel/console.H>
#include <kernel/timemgr.H>
class TaskWaitTest : public CxxTest::TestSuite
{
public:
void testWaitAfterChildExit()
{
int status = 0x1234;
tid_t child = task_create(&WaitSomeTime, NULL);
WaitSomeLongerTime(NULL);
// Join with that child task to clean it up.
if (child != task_wait_tid(child, &status, NULL))
{
TS_FAIL("Failed to join with test-case child.");
}
if (status != TASK_STATUS_EXITED_CLEAN)
{
TS_FAIL("Task status is incorrect after wait.");
}
}
void testWaitBeforeChildExit()
{
tid_t child = task_create(&WaitSomeLongerTime, NULL);
WaitSomeTime(NULL);
// Join with that child task to clean it up.
if (child != task_wait_tid(child, NULL, NULL))
{
TS_FAIL("Failed to join with test-case child.");
}
}
void testWaitOnTwoChildren()
{
tid_t child[2] = { task_create(&WaitSomeTime, NULL),
task_create(&WaitSomeTime, NULL) };
tid_t completed = 0;
completed = task_wait(NULL, NULL);
if ((completed != child[0]) && (completed != child[1]))
{
TS_FAIL("Different child returned than one waited on.");
}
completed = task_wait(NULL, NULL);
if ((completed != child[0]) && (completed != child[1]))
{
TS_FAIL("Different child returned than one waited on.");
}
}
void testWaitOnGrandchild()
{
tid_t child = task_create(&TaskWithChild, NULL);
void* retval;
task_wait_tid(child, NULL, &retval);
tid_t grandchild = static_cast<tid_t>(
reinterpret_cast<uint64_t>(retval));
if (grandchild != task_wait_tid(grandchild, NULL, NULL))
{
TS_FAIL("Grand-child task was not joined with.");
}
}
void testWaitOnCrash()
{
int status = 1234;
tid_t child = task_create(&TaskThatCrashes, NULL);
task_wait_tid(child, &status, NULL);
if (status != TASK_STATUS_CRASHED)
{
TS_FAIL("Task wait status is incorrect.");
}
}
void testWaitDeadlock()
{
// Check for any thread when we don't have a child.
if (((tid_t)-EDEADLK) != task_wait(NULL, NULL))
{
TS_FAIL("Deadlock condition not detected.");
}
// Check for waiting on the wrong task.
tid_t child = task_create(&WaitSomeTime, NULL);
if (((tid_t)-EDEADLK) != task_wait_tid(0, NULL, NULL))
{
TS_FAIL("Deadlock condition not detected.");
}
// Join with that child task to clean it up.
if (child != task_wait_tid(child, NULL, NULL))
{
TS_FAIL("Failed to join with test-case child.");
}
}
void testWaitAddrFault()
{
if (((tid_t)-EFAULT) != task_wait((int*)4, NULL))
{
TS_FAIL("Bad address on status not caught.");
}
if (((tid_t)-EFAULT) != task_wait(NULL, (void**)4))
{
TS_FAIL("Bad address on ret-val not caught.");
}
}
static void* WaitSomeTime(void* retval)
{
nanosleep(0,TEN_CTX_SWITCHES_NS);
return retval;
}
static void* WaitSomeLongerTime(void* retval)
{
nanosleep(0, 2*TEN_CTX_SWITCHES_NS);
return retval;
}
static void* TaskWithChild(void* unused)
{
tid_t child = task_create(&WaitSomeTime, NULL);
return reinterpret_cast<void*>(child);
}
static void* TaskThatCrashes(void* unused)
{
printk("TaskThatCrashes: Expect to see uncaught exception! ");
*(int64_t*)(0) = 0xDEADC0DE;
return NULL;
}
};
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