63 lines
1.1 KiB
C
63 lines
1.1 KiB
C
/*
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* count1.c
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*
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* Description:
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* Test some basic assertions about the number of threads at runtime.
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*/
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#include "test.h"
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#if ! defined (__MINGW32__) || defined (__MSVCRT__)
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#define NUMTHREADS (60)
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#else
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#define NUMTHREADS (59)
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#endif
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static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
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static pthread_t threads[NUMTHREADS];
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static unsigned numThreads = 0;
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void *
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myfunc(void *arg)
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{
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pthread_mutex_lock(&lock);
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numThreads++;
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pthread_mutex_unlock(&lock);
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Sleep(1000);
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return 0;
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}
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int
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main()
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{
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int i;
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int maxThreads = sizeof(threads) / sizeof(pthread_t);
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/*
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* Spawn NUMTHREADS threads. Each thread should increment the
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* numThreads variable, sleep for one second.
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*/
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for (i = 0; i < maxThreads; i++)
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{
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assert(pthread_create(&threads[i], NULL, myfunc, 0) == 0);
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}
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/*
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* Wait for all the threads to exit.
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*/
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for (i = 0; i < maxThreads; i++)
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{
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assert(pthread_join(threads[i], NULL) == 0);
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}
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/*
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* Check the number of threads created.
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*/
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assert((int) numThreads == maxThreads);
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/*
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* Success.
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*/
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return 0;
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}
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