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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*=====================================================================
**
** Source: test10.c (DuplicateHandle)
**
** Purpose: Tests the PAL implementation of the DuplicateHandle function.
** This tests the operation of a duplicated Semaphore handle
**
**
**===================================================================*/
#include <palsuite.h>
enum wait_results
{
WR_WAITING,
WR_GOT_MUTEX,
WR_TIMED_OUT,
WR_RELEASED
};
volatile int t1_result=WR_WAITING;
volatile int t2_result=WR_WAITING;
DWORD PALAPI ThreadTest1(LPVOID lpParam)
{
DWORD dwWait;
dwWait = WaitForSingleObject((HANDLE)lpParam, 0);
if (dwWait == WAIT_OBJECT_0)
{
/* tell the main thread we got the mutex */
t1_result=WR_GOT_MUTEX;
/* wait for main thread to tell us to release the mutex */
while(WR_GOT_MUTEX == t1_result)
Sleep(1);
ReleaseSemaphore((HANDLE)lpParam, 1, NULL);
/* tell the main thread we released the mutex */
t1_result = WR_RELEASED;
}
else
{
t1_result = WR_TIMED_OUT;
}
return 0;
}
DWORD PALAPI ThreadTest2(LPVOID lpParam)
{
DWORD dwWait;
dwWait = WaitForSingleObject((HANDLE)lpParam, 0 );
if (dwWait == WAIT_OBJECT_0)
{
ReleaseSemaphore((HANDLE)lpParam, 1, NULL);
t2_result = WR_GOT_MUTEX;
}
else
{
t2_result = WR_TIMED_OUT;
}
return 0;
}
int __cdecl main(int argc, char **argv)
{
HANDLE hDupSemaphore;
HANDLE hSemaphore;
HANDLE hThread;
HANDLE hThread2;
BOOL bDupHandle=FALSE;
DWORD dwThreadId = 0;
if ((PAL_Initialize(argc,argv)) != 0)
{
return(FAIL);
}
hSemaphore = CreateSemaphoreW( NULL,
1,
1,
NULL);
if (hSemaphore == NULL)
{
Fail("PALSUITE ERROR:%u: Unable to create mutex\n",
GetLastError());
}
/*Create Duplicate of the Semaphore above*/
bDupHandle = DuplicateHandle(GetCurrentProcess(),
hSemaphore,
GetCurrentProcess(),
&hDupSemaphore,
GENERIC_READ|GENERIC_WRITE,
FALSE,
DUPLICATE_SAME_ACCESS);
if (!bDupHandle)
{
Trace("PALSUITE ERROR:%u: Created the duplicate handle to "
"closed event handle hSemaphore=0x%lx\n",
GetLastError(),
hSemaphore);
CloseHandle(hSemaphore);
Fail("");
}
/*Create a thread to test the Semaphore*/
hThread = CreateThread(NULL,
0,
&ThreadTest1,
hSemaphore,
0,
&dwThreadId);
if (hThread == NULL)
{
Trace("PALSUITE ERROR:%u: unable to create thread\n",
GetLastError());
CloseHandle(hSemaphore);
CloseHandle(hDupSemaphore);
Fail("");
}
/* wait until thread has taken the mutex */
while (WR_WAITING == t1_result)
Sleep(1);
if(WR_TIMED_OUT == t1_result)
{
Trace("PALSUITE ERROR: %u: thread couldn't acquire the semaphore\n",
GetLastError());
CloseHandle(hSemaphore);
CloseHandle(hDupSemaphore);
CloseHandle(hThread);
Fail("");
}
/*Create a second thread to use the Semaphore's duplicate handle*/
/*This thread should block since the Semaphore is owned by another
thread*/
hThread2 = CreateThread(NULL,
0,
&ThreadTest2,
hDupSemaphore,
0,
&dwThreadId);
if (hThread2 == NULL)
{
Trace("PALSUITE ERROR:%u: unable to create thread\n",
GetLastError());
CloseHandle(hSemaphore);
CloseHandle(hDupSemaphore);
CloseHandle(hThread);
Fail("");
}
/* wait until thread has tried to take the mutex */
while (WR_WAITING == t2_result)
Sleep(1);
if (WR_TIMED_OUT != t2_result )
{
Trace("PALSUITE ERROR:%u: Able to take mutex %#x while its "
"duplicate %#x is held\n", GetLastError(), hDupSemaphore,
hSemaphore);
CloseHandle(hSemaphore);
CloseHandle(hDupSemaphore);
CloseHandle(hThread);
CloseHandle(hThread2);
Fail("");
}
/* reset second thread status */
t2_result = WR_WAITING;
/* tell thread 1 to release the mutex */
t1_result = WR_WAITING;
/* wait for thread 1 to release the mutex */
while (WR_WAITING == t1_result)
Sleep(1);
CloseHandle(hThread2);
/*Re-Create the second thread to reuse the duplicated Semaphore*/
/*Since the Semaphore has since been released, the thread should
put WR_GOT_MUTEX into t2_result */
hThread2 = CreateThread(NULL,
0,
&ThreadTest2,
hDupSemaphore,
0,
&dwThreadId);
if (hThread2 == NULL)
{
Trace("PALSUITE ERROR:%u: unable to create thread\n",
GetLastError());
CloseHandle(hSemaphore);
CloseHandle(hDupSemaphore);
CloseHandle(hThread);
Fail("");
}
/* wait until thread has taken the semaphore */
while (WR_WAITING == t2_result)
Sleep(1);
if (WR_GOT_MUTEX != t2_result )
{
Trace("PALSUITE ERROR:%u: Unable to take semaphore %#x after its"
" duplicate %#x was released\n", GetLastError(), hDupSemaphore,
hSemaphore);
CloseHandle(hSemaphore);
CloseHandle(hDupSemaphore);
CloseHandle(hThread);
CloseHandle(hThread2);
Fail("");
}
/*Cleanup.*/
CloseHandle(hSemaphore);
CloseHandle(hDupSemaphore);
CloseHandle(hThread);
CloseHandle(hThread2);
PAL_Terminate();
return (PASS);
}
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