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author | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
commit | 3562e78743202e43aec8727005182a2558117eca (patch) | |
tree | 8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /pthreads/tests/reuse2.c | |
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Diffstat (limited to 'pthreads/tests/reuse2.c')
-rw-r--r-- | pthreads/tests/reuse2.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/pthreads/tests/reuse2.c b/pthreads/tests/reuse2.c new file mode 100644 index 000000000..c4db81199 --- /dev/null +++ b/pthreads/tests/reuse2.c @@ -0,0 +1,167 @@ +/* + * File: reuse2.c + * + * + * -------------------------------------------------------------------------- + * + * Pthreads-win32 - POSIX Threads Library for Win32 + * Copyright(C) 1998 John E. Bossom + * Copyright(C) 1999,2005 Pthreads-win32 contributors + * + * Contact Email: rpj@callisto.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., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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: + * - This test is implementation specific + * because it uses knowledge of internals that should be + * opaque to an application. + * + * 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 = 10000 +}; + + +static long done = 0; + +void * func(void * arg) +{ + sched_yield(); + + InterlockedIncrement(&done); + + return (void *) 0; +} + +int +main() +{ + pthread_t t[NUMTHREADS]; + pthread_attr_t attr; + int i; + unsigned int notUnique = 0, + totalHandles = 0, + reuseMax = 0, + reuseMin = NUMTHREADS; + + assert(pthread_attr_init(&attr) == 0); + assert(pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) == 0); + + for (i = 0; i < NUMTHREADS; i++) + { + assert(pthread_create(&t[i], &attr, func, NULL) == 0); + } + + while (NUMTHREADS > InterlockedExchangeAdd((LPLONG)&done, 0L)) + Sleep(100); + + Sleep(100); + + /* + * Analyse reuse by computing min and max number of times pthread_create() + * returned the same pthread_t value. + */ + for (i = 0; i < NUMTHREADS; i++) + { + if (t[i].p != NULL) + { + unsigned int j, thisMax; + + thisMax = t[i].x; + + for (j = i+1; j < NUMTHREADS; j++) + if (t[i].p == t[j].p) + { + if (t[i].x == t[j].x) + notUnique++; + if (thisMax < t[j].x) + thisMax = t[j].x; + t[j].p = NULL; + } + + if (reuseMin > thisMax) + reuseMin = thisMax; + + if (reuseMax < thisMax) + reuseMax = thisMax; + } + } + + for (i = 0; i < NUMTHREADS; i++) + if (t[i].p != NULL) + totalHandles++; + + /* + * pthread_t reuse counts start at 0, so we need to add 1 + * to the max and min values derived above. + */ + printf("For %d total threads:\n", NUMTHREADS); + printf("Non-unique IDs = %d\n", notUnique); + printf("Reuse maximum = %d\n", reuseMax + 1); + printf("Reuse minimum = %d\n", reuseMin + 1); + printf("Total handles = %d\n", totalHandles); + + return 0; +} |