103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
// RUN: %libomp-compile-and-run
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// UNSUPPORTED: gcc-4, gcc-5, gcc-6, gcc-7, gcc-8
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// UNSUPPORTED: clang-3, clang-4, clang-5, clang-6, clang-7, clang-8
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// TODO: update expected result when icc supports mutexinoutset
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// XFAIL: icc
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// Tests OMP 5.0 task dependences "mutexinoutset", emulates compiler codegen
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// Mutually exclusive tasks get same input dependency info array
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//
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// Task tree created:
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// task0 task1
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// \ / \
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// task2 task5
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// / \
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// task3 task4
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// / \
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// task6 <-->task7 (these two are mutually exclusive)
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// \ /
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// task8
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//
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#include <stdio.h>
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#include <omp.h>
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#include "omp_my_sleep.h"
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static int checker = 0; // to check if two tasks run simultaneously
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static int err = 0;
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#ifndef DELAY
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#define DELAY 0.1
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#endif
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int mutex_task(int task_id) {
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int th = omp_get_thread_num();
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#pragma omp atomic
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++checker;
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printf("task %d, th %d\n", task_id, th);
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if (checker != 1) {
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err++;
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printf("Error1, checker %d != 1\n", checker);
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}
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my_sleep(DELAY);
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if (checker != 1) {
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err++;
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printf("Error2, checker %d != 1\n", checker);
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}
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#pragma omp atomic
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--checker;
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return 0;
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}
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int main()
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{
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int i1,i2,i3,i4;
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omp_set_num_threads(2);
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#pragma omp parallel
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{
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#pragma omp single nowait
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{
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int t = omp_get_thread_num();
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#pragma omp task depend(in: i1, i2)
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{ int th = omp_get_thread_num();
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printf("task 0_%d, th %d\n", t, th);
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my_sleep(DELAY); }
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#pragma omp task depend(in: i1, i3)
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{ int th = omp_get_thread_num();
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printf("task 1_%d, th %d\n", t, th);
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my_sleep(DELAY); }
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#pragma omp task depend(in: i2) depend(out: i1)
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{ int th = omp_get_thread_num();
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printf("task 2_%d, th %d\n", t, th);
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my_sleep(DELAY); }
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#pragma omp task depend(in: i1)
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{ int th = omp_get_thread_num();
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printf("task 3_%d, th %d\n", t, th);
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my_sleep(DELAY); }
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#pragma omp task depend(out: i2)
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{ int th = omp_get_thread_num();
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printf("task 4_%d, th %d\n", t, th);
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my_sleep(DELAY+0.1); } // wait a bit longer than task 3
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#pragma omp task depend(out: i3)
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{ int th = omp_get_thread_num();
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printf("task 5_%d, th %d\n", t, th);
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my_sleep(DELAY); }
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#pragma omp task depend(mutexinoutset: i1, i4)
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{ mutex_task(6); }
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#pragma omp task depend(mutexinoutset: i1, i4)
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{ mutex_task(7); }
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#pragma omp task depend(in: i1)
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{ int th = omp_get_thread_num();
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printf("task 8_%d, th %d\n", t, th);
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my_sleep(DELAY); }
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} // single
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} // parallel
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if (err == 0) {
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printf("passed\n");
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return 0;
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} else {
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printf("failed\n");
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return 1;
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}
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}
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