327 lines
9.3 KiB
C
327 lines
9.3 KiB
C
/*
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* benchtest1.c
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*
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*
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* --------------------------------------------------------------------------
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*
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* Pthreads-win32 - POSIX Threads Library for Win32
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* Copyright(C) 1998 John E. Bossom
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* Copyright(C) 1999,2005 Pthreads-win32 contributors
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*
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* Contact Email: rpj@callisto.canberra.edu.au
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*
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* The current list of contributors is contained
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* in the file CONTRIBUTORS included with the source
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* code distribution. The list can also be seen at the
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* following World Wide Web location:
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* http://sources.redhat.com/pthreads-win32/contributors.html
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library in the file COPYING.LIB;
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* if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* --------------------------------------------------------------------------
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*
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* Measure time taken to complete an elementary operation.
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*
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* - Mutex
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* Two threads iterate over lock/unlock for each mutex type.
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* The two threads are forced into lock-step using two mutexes,
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* forcing the threads to block on each lock operation. The
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* time measured is therefore the worst case senario.
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*/
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#include "test.h"
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#include <sys/timeb.h>
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#ifdef __GNUC__
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#include <stdlib.h>
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#endif
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#include "benchtest.h"
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#define PTW32_MUTEX_TYPES
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#define ITERATIONS 100000L
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pthread_mutex_t gate1, gate2;
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old_mutex_t ox1, ox2;
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CRITICAL_SECTION cs1, cs2;
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pthread_mutexattr_t ma;
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long durationMilliSecs;
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long overHeadMilliSecs = 0;
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PTW32_STRUCT_TIMEB currSysTimeStart;
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PTW32_STRUCT_TIMEB currSysTimeStop;
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pthread_t worker;
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int running = 0;
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#define GetDurationMilliSecs(_TStart, _TStop) ((long)((_TStop.time*1000+_TStop.millitm) \
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- (_TStart.time*1000+_TStart.millitm)))
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/*
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* Dummy use of j, otherwise the loop may be removed by the optimiser
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* when doing the overhead timing with an empty loop.
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*/
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#define TESTSTART \
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{ int i, j = 0, k = 0; PTW32_FTIME(&currSysTimeStart); for (i = 0; i < ITERATIONS; i++) { j++;
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#define TESTSTOP \
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}; PTW32_FTIME(&currSysTimeStop); if (j + k == i) j++; }
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void *
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overheadThread(void * arg)
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{
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do
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{
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sched_yield();
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}
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while (running);
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return NULL;
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}
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void *
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oldThread(void * arg)
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{
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do
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{
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(void) old_mutex_lock(&ox1);
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(void) old_mutex_lock(&ox2);
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(void) old_mutex_unlock(&ox1);
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sched_yield();
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(void) old_mutex_unlock(&ox2);
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}
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while (running);
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return NULL;
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}
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void *
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workerThread(void * arg)
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{
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do
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{
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(void) pthread_mutex_lock(&gate1);
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(void) pthread_mutex_lock(&gate2);
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(void) pthread_mutex_unlock(&gate1);
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sched_yield();
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(void) pthread_mutex_unlock(&gate2);
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}
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while (running);
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return NULL;
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}
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void *
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CSThread(void * arg)
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{
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do
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{
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EnterCriticalSection(&cs1);
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EnterCriticalSection(&cs2);
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LeaveCriticalSection(&cs1);
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sched_yield();
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LeaveCriticalSection(&cs2);
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}
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while (running);
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return NULL;
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}
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void
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runTest (char * testNameString, int mType)
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{
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#ifdef PTW32_MUTEX_TYPES
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assert(pthread_mutexattr_settype(&ma, mType) == 0);
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#endif
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assert(pthread_mutex_init(&gate1, &ma) == 0);
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assert(pthread_mutex_init(&gate2, &ma) == 0);
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assert(pthread_mutex_lock(&gate1) == 0);
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assert(pthread_mutex_lock(&gate2) == 0);
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running = 1;
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assert(pthread_create(&worker, NULL, workerThread, NULL) == 0);
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TESTSTART
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(void) pthread_mutex_unlock(&gate1);
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sched_yield();
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(void) pthread_mutex_unlock(&gate2);
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(void) pthread_mutex_lock(&gate1);
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(void) pthread_mutex_lock(&gate2);
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TESTSTOP
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running = 0;
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assert(pthread_mutex_unlock(&gate2) == 0);
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assert(pthread_mutex_unlock(&gate1) == 0);
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assert(pthread_join(worker, NULL) == 0);
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assert(pthread_mutex_destroy(&gate2) == 0);
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assert(pthread_mutex_destroy(&gate1) == 0);
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durationMilliSecs = GetDurationMilliSecs(currSysTimeStart, currSysTimeStop) - overHeadMilliSecs;
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printf( "%-45s %15ld %15.3f\n",
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testNameString,
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durationMilliSecs,
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(float) durationMilliSecs * 1E3 / ITERATIONS / 4 /* Four locks/unlocks per iteration */);
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}
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int
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main (int argc, char *argv[])
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{
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assert(pthread_mutexattr_init(&ma) == 0);
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printf( "=============================================================================\n");
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printf( "\nLock plus unlock on a locked mutex.\n");
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printf("%ld iterations, four locks/unlocks per iteration.\n\n", ITERATIONS);
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printf( "%-45s %15s %15s\n",
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"Test",
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"Total(msec)",
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"average(usec)");
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printf( "-----------------------------------------------------------------------------\n");
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/*
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* Time the loop overhead so we can subtract it from the actual test times.
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*/
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running = 1;
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assert(pthread_create(&worker, NULL, overheadThread, NULL) == 0);
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TESTSTART
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sched_yield();
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sched_yield();
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TESTSTOP
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running = 0;
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assert(pthread_join(worker, NULL) == 0);
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durationMilliSecs = GetDurationMilliSecs(currSysTimeStart, currSysTimeStop) - overHeadMilliSecs;
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overHeadMilliSecs = durationMilliSecs;
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InitializeCriticalSection(&cs1);
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InitializeCriticalSection(&cs2);
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EnterCriticalSection(&cs1);
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EnterCriticalSection(&cs2);
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running = 1;
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assert(pthread_create(&worker, NULL, CSThread, NULL) == 0);
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TESTSTART
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LeaveCriticalSection(&cs1);
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sched_yield();
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LeaveCriticalSection(&cs2);
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EnterCriticalSection(&cs1);
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EnterCriticalSection(&cs2);
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TESTSTOP
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running = 0;
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LeaveCriticalSection(&cs2);
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LeaveCriticalSection(&cs1);
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assert(pthread_join(worker, NULL) == 0);
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DeleteCriticalSection(&cs2);
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DeleteCriticalSection(&cs1);
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durationMilliSecs = GetDurationMilliSecs(currSysTimeStart, currSysTimeStop) - overHeadMilliSecs;
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printf( "%-45s %15ld %15.3f\n",
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"Simple Critical Section",
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durationMilliSecs,
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(float) durationMilliSecs * 1E3 / ITERATIONS / 4 );
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old_mutex_use = OLD_WIN32CS;
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assert(old_mutex_init(&ox1, NULL) == 0);
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assert(old_mutex_init(&ox2, NULL) == 0);
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assert(old_mutex_lock(&ox1) == 0);
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assert(old_mutex_lock(&ox2) == 0);
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running = 1;
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assert(pthread_create(&worker, NULL, oldThread, NULL) == 0);
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TESTSTART
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(void) old_mutex_unlock(&ox1);
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sched_yield();
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(void) old_mutex_unlock(&ox2);
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(void) old_mutex_lock(&ox1);
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(void) old_mutex_lock(&ox2);
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TESTSTOP
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running = 0;
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assert(old_mutex_unlock(&ox1) == 0);
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assert(old_mutex_unlock(&ox2) == 0);
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assert(pthread_join(worker, NULL) == 0);
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assert(old_mutex_destroy(&ox2) == 0);
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assert(old_mutex_destroy(&ox1) == 0);
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durationMilliSecs = GetDurationMilliSecs(currSysTimeStart, currSysTimeStop) - overHeadMilliSecs;
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printf( "%-45s %15ld %15.3f\n",
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"Old PT Mutex using a Critical Section (WNT)",
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durationMilliSecs,
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(float) durationMilliSecs * 1E3 / ITERATIONS / 4);
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old_mutex_use = OLD_WIN32MUTEX;
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assert(old_mutex_init(&ox1, NULL) == 0);
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assert(old_mutex_init(&ox2, NULL) == 0);
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assert(old_mutex_lock(&ox1) == 0);
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assert(old_mutex_lock(&ox2) == 0);
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running = 1;
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assert(pthread_create(&worker, NULL, oldThread, NULL) == 0);
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TESTSTART
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(void) old_mutex_unlock(&ox1);
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sched_yield();
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(void) old_mutex_unlock(&ox2);
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(void) old_mutex_lock(&ox1);
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(void) old_mutex_lock(&ox2);
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TESTSTOP
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running = 0;
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assert(old_mutex_unlock(&ox1) == 0);
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assert(old_mutex_unlock(&ox2) == 0);
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assert(pthread_join(worker, NULL) == 0);
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assert(old_mutex_destroy(&ox2) == 0);
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assert(old_mutex_destroy(&ox1) == 0);
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durationMilliSecs = GetDurationMilliSecs(currSysTimeStart, currSysTimeStop) - overHeadMilliSecs;
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printf( "%-45s %15ld %15.3f\n",
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"Old PT Mutex using a Win32 Mutex (W9x)",
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durationMilliSecs,
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(float) durationMilliSecs * 1E3 / ITERATIONS / 4);
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printf( ".............................................................................\n");
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/*
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* Now we can start the actual tests
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*/
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#ifdef PTW32_MUTEX_TYPES
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runTest("PTHREAD_MUTEX_DEFAULT", PTHREAD_MUTEX_DEFAULT);
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runTest("PTHREAD_MUTEX_NORMAL", PTHREAD_MUTEX_NORMAL);
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runTest("PTHREAD_MUTEX_ERRORCHECK", PTHREAD_MUTEX_ERRORCHECK);
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runTest("PTHREAD_MUTEX_RECURSIVE", PTHREAD_MUTEX_RECURSIVE);
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#else
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runTest("Non-blocking lock", 0);
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#endif
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printf( ".............................................................................\n");
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pthread_mutexattr_setrobust(&ma, PTHREAD_MUTEX_ROBUST);
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#ifdef PTW32_MUTEX_TYPES
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runTest("PTHREAD_MUTEX_DEFAULT (Robust)", PTHREAD_MUTEX_DEFAULT);
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runTest("PTHREAD_MUTEX_NORMAL (Robust)", PTHREAD_MUTEX_NORMAL);
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runTest("PTHREAD_MUTEX_ERRORCHECK (Robust)", PTHREAD_MUTEX_ERRORCHECK);
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runTest("PTHREAD_MUTEX_RECURSIVE (Robust)", PTHREAD_MUTEX_RECURSIVE);
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#else
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runTest("Non-blocking lock", 0);
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#endif
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printf( "=============================================================================\n");
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/*
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* End of tests.
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*/
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pthread_mutexattr_destroy(&ma);
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return 0;
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}
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