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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: test2.c
**
** Purpose: Test that errno is 'per-thread' as noted in the documentation.
**
**
**==========================================================================*/
#include <palsuite.h>
/*
This thread function just checks that errno is initially 0 and then sets
it to a new value before returning.
*/
DWORD PALAPI ThreadFunc( LPVOID lpParam )
{
if(errno != 0)
{
*((DWORD*)lpParam) = 1;
}
errno = 20;
return 0;
}
int __cdecl main(int argc, char *argv[])
{
DWORD dwThreadId, dwThrdParam = 0;
HANDLE hThread;
if (PAL_Initialize(argc, argv))
{
return FAIL;
}
/* Set errno to a value within this thread */
errno = 50;
hThread = CreateThread(NULL, 0, ThreadFunc, &dwThrdParam, 0, &dwThreadId);
if (hThread == NULL)
{
Fail("ERROR: CreateThread failed to create a thread. "
"GetLastError() returned %d.\n",GetLastError());
}
WaitForSingleObject(hThread, INFINITE);
/* This checks the result of calling the thread */
if(dwThrdParam)
{
Fail("ERROR: errno was not set to 0 in the new thread. Each "
"thread should have its own value for errno.\n");
}
/* Check to make sure errno is still set to 50 */
if(errno != 50)
{
Fail("ERROR: errno should be 50 in the main thread, even though "
"it was set to 20 in another thread. Currently it is %d.\n",
errno);
}
PAL_Terminate();
return PASS;
}
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