72ada5ae6c
Encapsulate GOMP task dependencies in separate class and introduce the new mutexinoutset dependency type. This separate class allows future GOMP task APIs easier access to the task dependency functionality and better ability to propagate new dependency types to all existing GOMP task APIs which use task dependencies. Differential Revision: https://reviews.llvm.org/D87267
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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