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Diffstat (limited to 'final/runtime/test/lock/omp_init_lock.c')
-rw-r--r-- | final/runtime/test/lock/omp_init_lock.c | 42 |
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 new file mode 100644 index 0000000..24b60d1 --- /dev/null +++ b/final/runtime/test/lock/omp_init_lock.c @@ -0,0 +1,42 @@ +// 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(); +} |