44 lines
961 B
C
44 lines
961 B
C
/*
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* uncontestedReadLatches.c
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*
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* Created on: Oct 12, 2009
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* Author: sears
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*/
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#include <stasis/util/rw.h>
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#include <pthread.h>
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#include <stdio.h>
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char * usage = "%s numthreads numops\n";
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unsigned long numops;
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static void* worker(void* arg) {
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rwl * l = arg;
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for(unsigned long i = 0; i < numops; i++) {
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readlock(l, 0);
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unlock(l);
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}
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return 0;
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}
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int main(int argc, char * argv[]) {
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if(argc != 3) { printf(usage, argv[0]); abort(); }
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char * endptr;
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unsigned long numthreads = strtoul(argv[1], &endptr, 10);
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if(*endptr != 0) { printf(usage, argv[0]); abort(); }
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numops= strtoul(argv[2], &endptr, 10) / numthreads;
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if(*endptr != 0) { printf(usage, argv[0]); abort(); }
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pthread_t workers[numthreads];
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rwl * l[numthreads];
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for(int i = 0; i < numthreads; i++) {
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l[i] = initlock();
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pthread_create(&workers[i], 0, worker, l[i]);
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}
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for(int i = 0; i < numthreads; i++) {
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pthread_join(workers[i], 0);
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}
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}
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