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#include <stdio.h>
#include <winpr/crt.h>
#include <winpr/synch.h>
#include <winpr/thread.h>
#include <winpr/interlocked.h>
#define TEST_NUM_THREADS 100
#define TEST_NUM_FAILURES 10
static INIT_ONCE initOnceTest = INIT_ONCE_STATIC_INIT;
static HANDLE hStartEvent = NULL;
static LONG* pErrors = NULL;
static LONG* pTestThreadFunctionCalls = NULL;
static LONG* pTestOnceFunctionCalls = NULL;
static LONG* pInitOnceExecuteOnceCalls = NULL;
static BOOL CALLBACK TestOnceFunction(PINIT_ONCE once, PVOID param, PVOID* context)
{
LONG calls = InterlockedIncrement(pTestOnceFunctionCalls) - 1;
WINPR_UNUSED(once);
WINPR_UNUSED(param);
WINPR_UNUSED(context);
/* simulate execution time */
Sleep(30 + rand() % 40);
if (calls < TEST_NUM_FAILURES)
{
/* simulated error */
return FALSE;
}
if (calls == TEST_NUM_FAILURES)
{
return TRUE;
}
fprintf(stderr, "%s: error: called again after success\n", __func__);
InterlockedIncrement(pErrors);
return FALSE;
}
static DWORD WINAPI TestThreadFunction(LPVOID lpParam)
{
LONG calls = 0;
BOOL ok = 0;
WINPR_UNUSED(lpParam);
InterlockedIncrement(pTestThreadFunctionCalls);
if (WaitForSingleObject(hStartEvent, INFINITE) != WAIT_OBJECT_0)
{
fprintf(stderr, "%s: error: failed to wait for start event\n", __func__);
InterlockedIncrement(pErrors);
return 0;
}
ok = InitOnceExecuteOnce(&initOnceTest, TestOnceFunction, NULL, NULL);
calls = InterlockedIncrement(pInitOnceExecuteOnceCalls);
if (!ok && calls > TEST_NUM_FAILURES)
{
fprintf(stderr, "%s: InitOnceExecuteOnce failed unexpectedly\n", __func__);
InterlockedIncrement(pErrors);
}
return 0;
}
int TestSynchInit(int argc, char* argv[])
{
HANDLE hThreads[TEST_NUM_THREADS];
DWORD dwCreatedThreads = 0;
BOOL result = FALSE;
WINPR_UNUSED(argc);
WINPR_UNUSED(argv);
pErrors = winpr_aligned_malloc(sizeof(LONG), sizeof(LONG));
pTestThreadFunctionCalls = winpr_aligned_malloc(sizeof(LONG), sizeof(LONG));
pTestOnceFunctionCalls = winpr_aligned_malloc(sizeof(LONG), sizeof(LONG));
pInitOnceExecuteOnceCalls = winpr_aligned_malloc(sizeof(LONG), sizeof(LONG));
if (!pErrors || !pTestThreadFunctionCalls || !pTestOnceFunctionCalls ||
!pInitOnceExecuteOnceCalls)
{
fprintf(stderr, "error: _aligned_malloc failed\n");
goto out;
}
*pErrors = 0;
*pTestThreadFunctionCalls = 0;
*pTestOnceFunctionCalls = 0;
*pInitOnceExecuteOnceCalls = 0;
if (!(hStartEvent = CreateEvent(NULL, TRUE, FALSE, NULL)))
{
fprintf(stderr, "error creating start event\n");
InterlockedIncrement(pErrors);
goto out;
}
for (DWORD i = 0; i < TEST_NUM_THREADS; i++)
{
if (!(hThreads[i] = CreateThread(NULL, 0, TestThreadFunction, NULL, 0, NULL)))
{
fprintf(stderr, "error creating thread #%" PRIu32 "\n", i);
InterlockedIncrement(pErrors);
goto out;
}
dwCreatedThreads++;
}
Sleep(100);
SetEvent(hStartEvent);
for (DWORD i = 0; i < dwCreatedThreads; i++)
{
if (WaitForSingleObject(hThreads[i], INFINITE) != WAIT_OBJECT_0)
{
fprintf(stderr, "error: error waiting for thread #%" PRIu32 "\n", i);
InterlockedIncrement(pErrors);
goto out;
}
}
if (*pErrors == 0 && *pTestThreadFunctionCalls == TEST_NUM_THREADS &&
*pInitOnceExecuteOnceCalls == TEST_NUM_THREADS &&
*pTestOnceFunctionCalls == TEST_NUM_FAILURES + 1)
{
result = TRUE;
}
out:
fprintf(stderr, "Test result: %s\n", result ? "OK" : "ERROR");
fprintf(stderr, "Error count: %" PRId32 "\n", pErrors ? *pErrors : -1);
fprintf(stderr, "Threads created: %" PRIu32 "\n", dwCreatedThreads);
fprintf(stderr, "TestThreadFunctionCalls: %" PRId32 "\n",
pTestThreadFunctionCalls ? *pTestThreadFunctionCalls : -1);
fprintf(stderr, "InitOnceExecuteOnceCalls: %" PRId32 "\n",
pInitOnceExecuteOnceCalls ? *pInitOnceExecuteOnceCalls : -1);
fprintf(stderr, "TestOnceFunctionCalls: %" PRId32 "\n",
pTestOnceFunctionCalls ? *pTestOnceFunctionCalls : -1);
winpr_aligned_free(pErrors);
winpr_aligned_free(pTestThreadFunctionCalls);
winpr_aligned_free(pTestOnceFunctionCalls);
winpr_aligned_free(pInitOnceExecuteOnceCalls);
CloseHandle(hStartEvent);
for (DWORD i = 0; i < dwCreatedThreads; i++)
{
CloseHandle(hThreads[i]);
}
return (result ? 0 : 1);
}
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