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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 : test.c
**
** Purpose: InterlockedDecrement64() function
**
**
**=========================================================*/
/* This test is FINISHED. Note: The biggest feature of this function is that
it locks the value before it increments it -- in order to make it so only
one thread can access it. But, I really don't have a great test to make
sure it's thread safe. Any ideas?
*/
#include <palsuite.h>
int __cdecl main(int argc, char *argv[])
{
LONGLONG TheValue = 0;
LONGLONG TheReturn;
/*
* Initialize the PAL and return FAILURE if this fails
*/
if(0 != (PAL_Initialize(argc, argv)))
{
return FAIL;
}
/*
** Run only on 64 bit platforms
*/
#if defined(BIT64) && defined(PLATFORM_UNIX)
/* Compare START_VALUE with BaseVariableToManipulate, they're equal,
so exchange
*/
InterlockedDecrement64(&TheValue);
TheReturn = InterlockedDecrement64(&TheValue);
/* Decremented twice, it should be -2 now */
if(TheValue != -2)
{
#ifdef PLATFORM_UNIX
Fail("ERROR: After being decremented twice, the value should be -2, "
"but it is really %ll.",TheValue);
#else
Fail("ERROR: After being decremented twice, the value should be -2, "
"but it is really %I64.",TheValue);
#endif
}
/* Check to make sure it returns itself */
if(TheReturn != TheValue)
{
#ifdef PLATFORM_UNIX
Fail("ERROR: The function should have returned the new value of %d "
"but instead returned %ll.",TheValue,TheReturn);
#else
Fail("ERROR: After being decremented twice, the value should be -2, "
"but it is really %I64.",TheValue);
#endif
}
#endif //defined(BIT64) && defined(PLATFORM_UNIX)
PAL_Terminate();
return PASS;
}
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