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/*
* File: context1.c
*
* Test Synopsis: Test context switching method.
*
* Test Method (Validation or Falsification):
* -
*
* Requirements Tested:
* -
*
* Features Tested:
* -
*
* Cases Tested:
* -
*
* Description:
* -
*
* Environment:
* -
*
* Input:
* - None.
*
* Output:
* - File name, Line number, and failed expression on failure.
* - No output on success.
*
* Assumptions:
* - pthread_create
* pthread_exit
*
* Pass Criteria:
* - Process returns zero exit status.
*
* Fail Criteria:
* - Process returns non-zero exit status.
*/
#include "test.h"
#include "../implement.h"
static int washere = 0;
static void * func(void * arg)
{
washere = 1;
Sleep(1000);
return 0;
}
static void
anotherEnding ()
{
/*
* Switched context
*/
washere++;
pthread_exit(0);
}
int
main()
{
pthread_t t;
HANDLE hThread;
assert(pthread_create(&t, NULL, func, NULL) == 0);
hThread = t->threadH;
Sleep(500);
SuspendThread(hThread);
if (WaitForSingleObject(hThread, 0) == WAIT_TIMEOUT)
{
/*
* Ok, thread did not exit before we got to it.
*/
CONTEXT context;
context.ContextFlags = CONTEXT_CONTROL;
GetThreadContext(hThread, &context);
/*
*_x86 only!!!
*/
context.Eip = (DWORD) anotherEnding;
SetThreadContext(hThread, &context);
ResumeThread(hThread);
}
else
{
printf("Exited early\n");
fflush(stdout);
}
Sleep(1000);
assert(washere == 2);
return 0;
}
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