diff options
Diffstat (limited to 'final/runtime/test/api/kmp_set_defaults_lock_bug.c')
-rw-r--r-- | final/runtime/test/api/kmp_set_defaults_lock_bug.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/final/runtime/test/api/kmp_set_defaults_lock_bug.c b/final/runtime/test/api/kmp_set_defaults_lock_bug.c new file mode 100644 index 0000000..73a7afb --- /dev/null +++ b/final/runtime/test/api/kmp_set_defaults_lock_bug.c @@ -0,0 +1,53 @@ +// RUN: %libomp-compile-and-run +#include <stdio.h> +#include "omp_testsuite.h" +/* The bug occurs if the lock table is reallocated after + kmp_set_defaults() is called. If the table is reallocated, + then the lock will not point to a valid lock object after the + kmp_set_defaults() call.*/ +omp_lock_t lock; + +int test_kmp_set_defaults_lock_bug() +{ + /* checks that omp_get_num_threads is equal to the number of + threads */ + int nthreads_lib; + int nthreads = 0; + + nthreads_lib = -1; + + #pragma omp parallel + { + omp_set_lock(&lock); + nthreads++; + omp_unset_lock(&lock); + #pragma omp single + { + nthreads_lib = omp_get_num_threads (); + } /* end of single */ + } /* end of parallel */ + kmp_set_defaults("OMP_NUM_THREADS"); + #pragma omp parallel + { + omp_set_lock(&lock); + nthreads++; + omp_unset_lock(&lock); + } /* end of parallel */ + + return (nthreads == 2*nthreads_lib); +} + +int main() +{ + int i; + int num_failed=0; + omp_init_lock(&lock); + + for(i = 0; i < REPETITIONS; i++) { + if(!test_kmp_set_defaults_lock_bug()) { + num_failed++; + } + } + omp_destroy_lock(&lock); + return num_failed; +} |