From 19299847fdd32094b28377db1aea61b0f605dc8b Mon Sep 17 00:00:00 2001 From: rpj Date: Sun, 1 Jul 2001 13:49:38 +0000 Subject: 2001-07-01 Ross Johnson Contributed by - Alexander Terekhov. * condvar.c: Fixed lost signal bug reported by Timur Aydin (taydin@snet.net). [RPJ (me) didn't translate the original algorithm correctly.] * semaphore.c: Added sem_post_multiple; this is a useful routine, but it doesn't appear to be standard. For now it's not an exported function. tests/ChangeLog: 2001-07-01 Ross Johnson * benchtest3.c: New; timing mutexes. * benchtest4.c: New; time mutexes. * condvar3_1.c: Fixed bug - Alexander Terekhov * condvar3_3.c: New test. 2001-06-25 Ross Johnson * priority1.c: New test. * priority2.c: New test. * inherit1.c: New test. * benchtest1.c: New; timing mutexes. * benchtest2.c: New; timing mutexes. * mutex4.c: Modified to test all mutex types. --- tests/benchtest3.c | 169 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 169 insertions(+) create mode 100644 tests/benchtest3.c (limited to 'tests/benchtest3.c') diff --git a/tests/benchtest3.c b/tests/benchtest3.c new file mode 100644 index 0000000..c789fab --- /dev/null +++ b/tests/benchtest3.c @@ -0,0 +1,169 @@ +/* + * benchtest3.c + * + * Measure time taken to complete an elementary operation. + * + * - Mutex + * Single thread iteration over a trylock on a locked mutex for each mutex type. + */ + +#include "test.h" +#include + +#ifdef __GNUC__ +#include +#endif + +#include "benchtest.h" + +#define PTW32_MUTEX_TYPES +#define ITERATIONS 10000000L + +pthread_mutex_t mx; +old_mutex_t ox; +pthread_mutexattr_t ma; +struct _timeb currSysTimeStart; +struct _timeb currSysTimeStop; +long durationMilliSecs; +long overHeadMilliSecs = 0; + +#define GetDurationMilliSecs(_TStart, _TStop) ((_TStop.time*1000+_TStop.millitm) \ + - (_TStart.time*1000+_TStart.millitm)) + +/* + * Dummy use of j, otherwise the loop may be removed by the optimiser + * when doing the overhead timing with an empty loop. + */ +#define TESTSTART \ + { int i, j = 0, k = 0; _ftime(&currSysTimeStart); for (i = 0; i < ITERATIONS; i++) { j++; + +#define TESTSTOP \ + }; _ftime(&currSysTimeStop); if (j + k == i) j++; } + + +void * +trylockThread (void * arg) +{ + TESTSTART + (void) pthread_mutex_trylock(&mx); + TESTSTOP + + return NULL; +} + + +void * +oldTrylockThread (void * arg) +{ + TESTSTART + (void) old_mutex_trylock(&ox); + TESTSTOP + + return NULL; +} + + +void +runTest (char * testNameString, int mType) +{ + pthread_t t; + +#ifdef PTW32_MUTEX_TYPES + (void) pthread_mutexattr_settype(&ma, mType); +#endif + assert(pthread_mutex_init(&mx, &ma) == 0); + assert(pthread_mutex_lock(&mx) == 0); + assert(pthread_create(&t, NULL, trylockThread, 0) == 0); + assert(pthread_join(t, NULL) == 0); + assert(pthread_mutex_unlock(&mx) == 0); + assert(pthread_mutex_destroy(&mx) == 0); + + durationMilliSecs = GetDurationMilliSecs(currSysTimeStart, currSysTimeStop) - overHeadMilliSecs; + + printf( "%-40s %15ld %15.3f\n", + testNameString, + durationMilliSecs, + (float) durationMilliSecs * 1E3 / ITERATIONS); +} + + +int +main (int argc, char *argv[]) +{ + pthread_t t; + + assert(pthread_mutexattr_init(&ma) == 0); + + printf( "========================================================================\n"); + printf( "\nTrylock on a locked mutex.\n"); + printf( "%ld iterations.\n\n", ITERATIONS); + printf( "%-40s %15s %15s\n", + "Test", + "Total(msec)", + "average(usec)"); + printf( "------------------------------------------------------------------------\n"); + + /* + * Time the loop overhead so we can subtract it from the actual test times. + */ + + TESTSTART + TESTSTOP + + durationMilliSecs = GetDurationMilliSecs(currSysTimeStart, currSysTimeStop) - overHeadMilliSecs; + overHeadMilliSecs = durationMilliSecs; + + + old_mutex_use = OLD_WIN32CS; + assert(old_mutex_init(&ox, NULL) == 0); + assert(old_mutex_lock(&ox) == 0); + assert(pthread_create(&t, NULL, oldTrylockThread, 0) == 0); + assert(pthread_join(t, NULL) == 0); + assert(old_mutex_unlock(&ox) == 0); + assert(old_mutex_destroy(&ox) == 0); + durationMilliSecs = GetDurationMilliSecs(currSysTimeStart, currSysTimeStop) - overHeadMilliSecs; + printf( "%-40s %15ld %15.3f\n", + "PT Mutex using a Critical Section (WNT)", + durationMilliSecs, + (float) durationMilliSecs * 1E3 / ITERATIONS); + + old_mutex_use = OLD_WIN32MUTEX; + assert(old_mutex_init(&ox, NULL) == 0); + assert(old_mutex_lock(&ox) == 0); + assert(pthread_create(&t, NULL, oldTrylockThread, 0) == 0); + assert(pthread_join(t, NULL) == 0); + assert(old_mutex_unlock(&ox) == 0); + assert(old_mutex_destroy(&ox) == 0); + durationMilliSecs = GetDurationMilliSecs(currSysTimeStart, currSysTimeStop) - overHeadMilliSecs; + printf( "%-40s %15ld %15.3f\n", + "PT Mutex using a Win32 Mutex (W9x)", + durationMilliSecs, + (float) durationMilliSecs * 1E3 / ITERATIONS); + + printf( "........................................................................\n"); + + /* + * Now we can start the actual tests + */ +#ifdef PTW32_MUTEX_TYPES + runTest("PTHREAD_MUTEX_DEFAULT (W9x,WNT)", PTHREAD_MUTEX_DEFAULT); + + runTest("PTHREAD_MUTEX_NORMAL (W9x,WNT)", PTHREAD_MUTEX_NORMAL); + + runTest("PTHREAD_MUTEX_ERRORCHECK (W9x,WNT)", PTHREAD_MUTEX_ERRORCHECK); + + runTest("PTHREAD_MUTEX_RECURSIVE (W9x,WNT)", PTHREAD_MUTEX_RECURSIVE); +#else + runTest("Non-blocking lock", 0); +#endif + + printf( "========================================================================\n"); + + /* + * End of tests. + */ + + pthread_mutexattr_destroy(&ma); + + return 0; +} -- cgit v1.2.3