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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: InterlockedExchangeAdd() function
**
**
**=========================================================*/
/*
** The InterlockedExchangeAdd function performs an atomic addition of Value
** to the value pointed to by Addend.
** The result is stored in the address specified by Addend.
** The initial value of the variable pointed to by Addend is returned as the function value.
*/
#include <palsuite.h>
int __cdecl main(int argc, char *argv[])
{
LONG TheReturn;
LONG *ptrValue = NULL;
/*
* Initialize the PAL and return FAILURE if this fails
*/
if(0 != (PAL_Initialize(argc, argv)))
{
return FAIL;
}
#if defined(BIT64) && defined(PLATFORM_UNIX)
ptrValue = (LONG *) malloc(sizeof(LONG));
if(ptrValue == NULL)
{
Fail("Error:%d:Malloc failed for ptrValue\n", GetLastError());
}
*ptrValue = (LONG) 0;
TheReturn = InterlockedExchangeAdd( ptrValue, (LONG) 5);
/* Added, it should be 5 now */
if(*ptrValue != 5)
{
Trace("ERROR: After an add operation, the value should be 5, "
"but it is really %d.", *ptrValue);
free(ptrValue);
Fail("");
}
/* Check to make sure the function returns the original value (5 in this case) */
if(TheReturn != 0)
{
Trace("ERROR: The function should have returned the new value of %d "
"but instead returned %d.", *ptrValue, TheReturn);
free(ptrValue);
Fail("");
}
TheReturn = InterlockedExchangeAdd( ptrValue, (LONG) 1);
/* Added twice, it should be 6 now */
if(*ptrValue != 6)
{
Trace("ERROR: After having two add operations, the value should be 6, "
"but it is really %d.", *ptrValue);
free(ptrValue);
Fail("");
}
/* Check to make sure the function returns the original value (5 in this case) */
if(TheReturn != 5)
{
Trace("ERROR: The function should have returned the new value of %d "
"but instead returned %d.", *ptrValue, TheReturn);
free(ptrValue);
Fail("");
}
free(ptrValue);
#endif
PAL_Terminate();
return PASS;
}
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