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#include <winpr/crt.h>
#include <winpr/synch.h>
#include <winpr/thread.h>
static BOOL test_mutex_basic(void)
{
HANDLE mutex = NULL;
DWORD rc = 0;
if (!(mutex = CreateMutex(NULL, FALSE, NULL)))
{
printf("%s: CreateMutex failed\n", __func__);
return FALSE;
}
rc = WaitForSingleObject(mutex, INFINITE);
if (rc != WAIT_OBJECT_0)
{
printf("%s: WaitForSingleObject on mutex failed with %" PRIu32 "\n", __func__, rc);
return FALSE;
}
if (!ReleaseMutex(mutex))
{
printf("%s: ReleaseMutex failed\n", __func__);
return FALSE;
}
if (ReleaseMutex(mutex))
{
printf("%s: ReleaseMutex unexpectedly succeeded on released mutex\n", __func__);
return FALSE;
}
if (!CloseHandle(mutex))
{
printf("%s: CloseHandle on mutex failed\n", __func__);
return FALSE;
}
return TRUE;
}
static BOOL test_mutex_recursive(void)
{
HANDLE mutex = NULL;
DWORD rc = 0;
DWORD cnt = 50;
if (!(mutex = CreateMutex(NULL, TRUE, NULL)))
{
printf("%s: CreateMutex failed\n", __func__);
return FALSE;
}
for (UINT32 i = 0; i < cnt; i++)
{
rc = WaitForSingleObject(mutex, INFINITE);
if (rc != WAIT_OBJECT_0)
{
printf("%s: WaitForSingleObject #%" PRIu32 " on mutex failed with %" PRIu32 "\n",
__func__, i, rc);
return FALSE;
}
}
for (UINT32 i = 0; i < cnt; i++)
{
if (!ReleaseMutex(mutex))
{
printf("%s: ReleaseMutex #%" PRIu32 " failed\n", __func__, i);
return FALSE;
}
}
if (!ReleaseMutex(mutex))
{
/* Note: The mutex was initially owned ! */
printf("%s: Final ReleaseMutex failed\n", __func__);
return FALSE;
}
if (ReleaseMutex(mutex))
{
printf("%s: ReleaseMutex unexpectedly succeeded on released mutex\n", __func__);
return FALSE;
}
if (!CloseHandle(mutex))
{
printf("%s: CloseHandle on mutex failed\n", __func__);
return FALSE;
}
return TRUE;
}
static HANDLE thread1_mutex1 = NULL;
static HANDLE thread1_mutex2 = NULL;
static BOOL thread1_failed = TRUE;
static DWORD WINAPI test_mutex_thread1(LPVOID lpParam)
{
HANDLE hStartEvent = (HANDLE)lpParam;
DWORD rc = 0;
if (WaitForSingleObject(hStartEvent, INFINITE) != WAIT_OBJECT_0)
{
fprintf(stderr, "%s: failed to wait for start event\n", __func__);
return 0;
}
/**
* at this point:
* thread1_mutex1 is expected to be locked
* thread1_mutex2 is expected to be unlocked
* defined task:
* try to lock thread1_mutex1 (expected to fail)
* lock and unlock thread1_mutex2 (expected to work)
*/
rc = WaitForSingleObject(thread1_mutex1, 10);
if (rc != WAIT_TIMEOUT)
{
fprintf(stderr,
"%s: WaitForSingleObject on thread1_mutex1 unexpectedly returned %" PRIu32
" instead of WAIT_TIMEOUT (%u)\n",
__func__, rc, WAIT_TIMEOUT);
return 0;
}
rc = WaitForSingleObject(thread1_mutex2, 10);
if (rc != WAIT_OBJECT_0)
{
fprintf(stderr,
"%s: WaitForSingleObject on thread1_mutex2 unexpectedly returned %" PRIu32
" instead of WAIT_OBJECT_0\n",
__func__, rc);
return 0;
}
if (!ReleaseMutex(thread1_mutex2))
{
fprintf(stderr, "%s: ReleaseMutex failed on thread1_mutex2\n", __func__);
return 0;
}
thread1_failed = FALSE;
return 0;
}
static BOOL test_mutex_threading(void)
{
HANDLE hThread = NULL;
HANDLE hStartEvent = NULL;
if (!(thread1_mutex1 = CreateMutex(NULL, TRUE, NULL)))
{
printf("%s: CreateMutex thread1_mutex1 failed\n", __func__);
goto fail;
}
if (!(thread1_mutex2 = CreateMutex(NULL, FALSE, NULL)))
{
printf("%s: CreateMutex thread1_mutex2 failed\n", __func__);
goto fail;
}
if (!(hStartEvent = CreateEvent(NULL, TRUE, FALSE, NULL)))
{
fprintf(stderr, "%s: error creating start event\n", __func__);
goto fail;
}
thread1_failed = TRUE;
if (!(hThread = CreateThread(NULL, 0, test_mutex_thread1, (LPVOID)hStartEvent, 0, NULL)))
{
fprintf(stderr, "%s: error creating test_mutex_thread_1\n", __func__);
goto fail;
}
Sleep(100);
if (!thread1_failed)
{
fprintf(stderr, "%s: thread1 premature success\n", __func__);
goto fail;
}
SetEvent(hStartEvent);
if (WaitForSingleObject(hThread, 2000) != WAIT_OBJECT_0)
{
fprintf(stderr, "%s: thread1 premature success\n", __func__);
goto fail;
}
if (thread1_failed)
{
fprintf(stderr, "%s: thread1 has not reported success\n", __func__);
goto fail;
}
/**
* - thread1 must not have succeeded to lock thread1_mutex1
* - thread1 must have locked and unlocked thread1_mutex2
*/
if (!ReleaseMutex(thread1_mutex1))
{
printf("%s: ReleaseMutex unexpectedly failed on thread1_mutex1\n", __func__);
goto fail;
}
if (ReleaseMutex(thread1_mutex2))
{
printf("%s: ReleaseMutex unexpectedly succeeded on thread1_mutex2\n", __func__);
goto fail;
}
CloseHandle(hThread);
CloseHandle(hStartEvent);
CloseHandle(thread1_mutex1);
CloseHandle(thread1_mutex2);
return TRUE;
fail:
ReleaseMutex(thread1_mutex1);
ReleaseMutex(thread1_mutex2);
CloseHandle(thread1_mutex1);
CloseHandle(thread1_mutex2);
CloseHandle(hStartEvent);
CloseHandle(hThread);
return FALSE;
}
int TestSynchMutex(int argc, char* argv[])
{
int rc = 0;
WINPR_UNUSED(argc);
WINPR_UNUSED(argv);
if (!test_mutex_basic())
rc += 1;
if (!test_mutex_recursive())
rc += 2;
if (!test_mutex_threading())
rc += 4;
printf("TestSynchMutex result %d\n", rc);
return rc;
}
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