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/*
* File: reuse2.c
*
*
* --------------------------------------------------------------------------
*
* --------------------------------------------------------------------------
*
* Pthreads-win32 - POSIX Threads Library for Win32
* Copyright(C) 998 John E. Bossom
* Copyright(C) 999,22 Pthreads-win32 contributors
*
* Contact Email: rpj@ise.canberra.edu.au
*
* The current list of contributors is contained
* in the file CONTRIBUTORS included with the source
* code distribution. The list can also be seen at the
* following World Wide Web location:
* http://sources.redhat.com/pthreads-win32/contributors.html
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library in the file COPYING.LIB;
* if not, write to the Free Software Foundation, Inc.,
* 9 Temple Place - Suite 33, Boston, MA 2-37, USA
*
* --------------------------------------------------------------------------
*
* Test Synopsis:
* - Test that thread reuse works for detached threads.
* - Analyse thread struct reuse.
*
* Test Method (Validation or Falsification):
* -
*
* Requirements Tested:
* -
*
* Features Tested:
* -
*
* Cases Tested:
* -
*
* Description:
* -
*
* Environment:
* -
*
* Input:
* - None.
*
* Output:
* - File name, Line number, and failed expression on failure.
* - No output on success.
*
* Assumptions:
* -
*
* Pass Criteria:
* - Process returns zero exit status.
*
* Fail Criteria:
* - Process returns non-zero exit status.
*/
#include "test.h"
enum {
NUMTHREADS =
};
static int done = ;
void * func(void * arg)
{
sched_yield();
InterlockedIncrement((void *) &done);
return (void *) ;
}
int
main()
{
pthread_t t[NUMTHREADS];
pthread_attr_t attr;
int i, j;
int reuse,
reuseMax = ,
reuseMin = NUMTHREADS,
idTotal = ;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
for (i = ; i < NUMTHREADS; i++)
{
assert(pthread_create(&t[i], &attr, func, NULL) == );
}
while (NUMTHREADS > done)
Sleep();
/*
* Analyse reuse by computing min and max times pthread_create()
* returned the same pthread_t value.
*/
for (i = ; i < NUMTHREADS; i++)
{
reuse = ;
if (t[i] == NULL)
continue;
for (j = ; j < i; j++)
{
if (t[j] == t[i])
{
reuse++;
t[j] = NULL;
}
}
for (j = i + ; j < NUMTHREADS; j++)
{
if (t[j] == t[i])
{
reuse++;
t[j] = NULL;
}
}
if (reuseMax < reuse)
reuseMax = reuse;
if (reuseMin > reuse)
reuseMin = reuse;
}
for (i = ; i < NUMTHREADS; i++)
{
if (t[i] != NULL)
idTotal++;
}
printf("For %d total threads:\n", NUMTHREADS);
printf("Reuse maximum = %d\n", reuseMax);
printf("Reuse minimum = %d\n", reuseMin);
printf("Total thread IDs allocated = %d\n", idTotal);
return ;
}
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