170 lines
3.1 KiB
C
170 lines
3.1 KiB
C
/*
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* tsd1.c
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*
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* Test Thread Specific Data (TSD) key creation and destruction.
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*
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* Description:
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* -
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*
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* Test Method (validation or falsification):
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* - validation
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*
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* Requirements Tested:
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* - keys are created for each existing thread including the main thread
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* - keys are created for newly created threads
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* - keys are thread specific
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* - destroy routine is called on each thread exit including the main thread
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*
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* Features Tested:
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* -
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*
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* Cases Tested:
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* -
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*
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* Environment:
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* -
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*
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* Input:
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* - none
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*
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* Output:
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* - text to stdout
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*
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* Assumptions:
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* - already validated: pthread_create()
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* pthread_once()
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* - main thread also has a POSIX thread identity
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*
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* Pass Criteria:
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* - stdout matches file reference/tsd1.out
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*
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* Fail Criteria:
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* - fails to match file reference/tsd1.out
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* - output identifies failed component
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*/
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#include <sched.h>
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#include "test.h"
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static pthread_key_t key = NULL;
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static int accesscount[10];
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static int thread_set[10];
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static int thread_destroyed[10];
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static void
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destroy_key(void * arg)
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{
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int * j = (int *) arg;
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(*j)++;
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assert(*j == 2);
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thread_destroyed[j - accesscount] = 1;
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}
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static void
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setkey(void * arg)
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{
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int * j = (int *) arg;
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thread_set[j - accesscount] = 1;
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assert(*j == 0);
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assert(pthread_getspecific(key) == NULL);
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assert(pthread_setspecific(key, arg) == 0);
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assert(pthread_getspecific(key) == arg);
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(*j)++;
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assert(*j == 1);
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}
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static void *
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mythread(void * arg)
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{
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while (key == NULL)
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{
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sched_yield();
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}
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setkey(arg);
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return 0;
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/* Exiting the thread will call the key destructor. */
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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 fail = 0;
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pthread_t thread[10];
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for (i = 1; i < 5; i++)
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{
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accesscount[i] = thread_set[i] = thread_destroyed[i] = 0;
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assert(pthread_create(&thread[i], NULL, mythread, (void *)&accesscount[i]) == 0);
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}
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Sleep(2000);
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/*
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* Here we test that existing threads will get a key created
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* for them.
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*/
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assert(pthread_key_create(&key, destroy_key) == 0);
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/*
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* Test main thread key.
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*/
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accesscount[0] = 0;
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setkey((void *) &accesscount[0]);
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/*
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* Here we test that new threads will get a key created
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* for them.
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*/
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for (i = 5; i < 10; i++)
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{
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accesscount[i] = thread_set[i] = thread_destroyed[i] = 0;
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assert(pthread_create(&thread[i], NULL, mythread, (void *)&accesscount[i]) == 0);
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}
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/*
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* Wait for all threads to complete.
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*/
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for (i = 1; i < 10; i++)
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{
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int result = 0;
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assert(pthread_join(thread[i], (void **) &result) == 0);
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}
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assert(pthread_key_delete(key) == 0);
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for (i = 1; i < 10; i++)
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{
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/*
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* The counter is incremented once when the key is set to
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* a value, and again when the key is destroyed. If the key
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* doesn't get set for some reason then it will still be
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* NULL and the destroy function will not be called, and
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* hence accesscount will not equal 2.
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*/
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if (accesscount[i] != 2)
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{
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fail++;
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fprintf(stderr, "Thread %d key, set = %d, destroyed = %d\n",
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i, thread_set[i], thread_destroyed[i]);
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}
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}
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fflush(stderr);
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return (fail);
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}
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