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-rw-r--r--final/runtime/test/lock/omp_init_lock.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/final/runtime/test/lock/omp_init_lock.c b/final/runtime/test/lock/omp_init_lock.c
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+++ b/final/runtime/test/lock/omp_init_lock.c
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+// RUN: %libomp-compile-and-run
+#include "omp_testsuite.h"
+#include <stdio.h>
+
+// This should be slightly less than KMP_I_LOCK_CHUNK, which is 1024
+#define LOCKS_PER_ITER 1000
+#define ITERATIONS (REPETITIONS + 1)
+
+// This tests concurrently using locks on one thread while initializing new
+// ones on another thread. This exercises the global lock pool.
+int test_omp_init_lock() {
+ int i;
+ omp_lock_t lcks[ITERATIONS * LOCKS_PER_ITER];
+#pragma omp parallel for schedule(static) num_threads(NUM_TASKS)
+ for (i = 0; i < ITERATIONS; i++) {
+ int j;
+ omp_lock_t *my_lcks = &lcks[i * LOCKS_PER_ITER];
+ for (j = 0; j < LOCKS_PER_ITER; j++) {
+ omp_init_lock(&my_lcks[j]);
+ }
+ for (j = 0; j < LOCKS_PER_ITER * 100; j++) {
+ omp_set_lock(&my_lcks[j % LOCKS_PER_ITER]);
+ omp_unset_lock(&my_lcks[j % LOCKS_PER_ITER]);
+ }
+ }
+ // Wait until all repititions are done. The test is exercising growth of
+ // the global lock pool, which does not shrink when no locks are allocated.
+ {
+ int j;
+ for (j = 0; j < ITERATIONS * LOCKS_PER_ITER; j++) {
+ omp_destroy_lock(&lcks[j]);
+ }
+ }
+
+ return 0;
+}
+
+int main() {
+ // No use repeating this test, since it's exercising a private global pool
+ // which is not reset between test iterations.
+ return test_omp_init_lock();
+}