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// IBM_PROLOG_BEGIN_TAG
// This is an automatically generated prolog.
//
// $Source: src/usr/testcore/kernel/tasktest.H $
//
// IBM CONFIDENTIAL
//
// COPYRIGHT International Business Machines Corp. 2011
//
// 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 other-
// wise divested of its trade secrets, irrespective of what has
// been deposited with the U.S. Copyright Office.
//
// Origin: 30
//
// IBM_PROLOG_END
/** @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>
#define NS_PER_SEC (1000000ull)
#define TEN_CTX_SWITCHES ((NS_PER_SEC/TimeManager::TIMESLICE_PER_SEC)*10)
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);
if (retval) task_end2(retval);
}
static void WaitSomeLongerTime(void* retval)
{
nanosleep(0, 2*TEN_CTX_SWITCHES);
if (retval) task_end2(retval);
}
static void TaskWithChild(void* unused)
{
tid_t child = task_create(&WaitSomeTime, NULL);
task_end2(reinterpret_cast<void*>(child));
}
static void TaskThatCrashes(void* unused)
{
printk("Test case: Expect to see uncaught exception! ");
*(int64_t*)(0) = 0xDEADC0DE;
}
};
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