diff options
Diffstat (limited to 'libgomp/loop.c')
| -rw-r--r-- | libgomp/loop.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/libgomp/loop.c b/libgomp/loop.c index 812f66c..a7b5398 100644 --- a/libgomp/loop.c +++ b/libgomp/loop.c @@ -111,6 +111,11 @@ gomp_loop_static_start (long start, long end, long incr, long chunk_size, return !gomp_iter_static_next (istart, iend); } +/* The current dynamic implementation is always monotonic. The + entrypoints without nonmonotonic in them have to be always monotonic, + but the nonmonotonic ones could be changed to use work-stealing for + improved scalability. */ + static bool gomp_loop_dynamic_start (long start, long end, long incr, long chunk_size, long *istart, long *iend) @@ -136,6 +141,9 @@ gomp_loop_dynamic_start (long start, long end, long incr, long chunk_size, return ret; } +/* Similarly as for dynamic, though the question is how can the chunk sizes + be decreased without a central locking or atomics. */ + static bool gomp_loop_guided_start (long start, long end, long incr, long chunk_size, long *istart, long *iend) @@ -630,6 +638,37 @@ GOMP_parallel_loop_guided (void (*fn) (void *), void *data, GOMP_parallel_end (); } +#ifdef HAVE_ATTRIBUTE_ALIAS +extern __typeof(GOMP_parallel_loop_dynamic) GOMP_parallel_loop_nonmonotonic_dynamic + __attribute__((alias ("GOMP_parallel_loop_dynamic"))); +extern __typeof(GOMP_parallel_loop_guided) GOMP_parallel_loop_nonmonotonic_guided + __attribute__((alias ("GOMP_parallel_loop_guided"))); +#else +void +GOMP_parallel_loop_nonmonotonic_dynamic (void (*fn) (void *), void *data, + unsigned num_threads, long start, + long end, long incr, long chunk_size, + unsigned flags) +{ + gomp_parallel_loop_start (fn, data, num_threads, start, end, incr, + GFS_DYNAMIC, chunk_size, flags); + fn (data); + GOMP_parallel_end (); +} + +void +GOMP_parallel_loop_nonmonotonic_guided (void (*fn) (void *), void *data, + unsigned num_threads, long start, + long end, long incr, long chunk_size, + unsigned flags) +{ + gomp_parallel_loop_start (fn, data, num_threads, start, end, incr, + GFS_GUIDED, chunk_size, flags); + fn (data); + GOMP_parallel_end (); +} +#endif + void GOMP_parallel_loop_runtime (void (*fn) (void *), void *data, unsigned num_threads, long start, long end, @@ -678,6 +717,10 @@ extern __typeof(gomp_loop_dynamic_start) GOMP_loop_dynamic_start __attribute__((alias ("gomp_loop_dynamic_start"))); extern __typeof(gomp_loop_guided_start) GOMP_loop_guided_start __attribute__((alias ("gomp_loop_guided_start"))); +extern __typeof(gomp_loop_dynamic_start) GOMP_loop_nonmonotonic_dynamic_start + __attribute__((alias ("gomp_loop_dynamic_start"))); +extern __typeof(gomp_loop_guided_start) GOMP_loop_nonmonotonic_guided_start + __attribute__((alias ("gomp_loop_guided_start"))); extern __typeof(gomp_loop_ordered_static_start) GOMP_loop_ordered_static_start __attribute__((alias ("gomp_loop_ordered_static_start"))); @@ -699,6 +742,10 @@ extern __typeof(gomp_loop_dynamic_next) GOMP_loop_dynamic_next __attribute__((alias ("gomp_loop_dynamic_next"))); extern __typeof(gomp_loop_guided_next) GOMP_loop_guided_next __attribute__((alias ("gomp_loop_guided_next"))); +extern __typeof(gomp_loop_dynamic_next) GOMP_loop_nonmonotonic_dynamic_next + __attribute__((alias ("gomp_loop_dynamic_next"))); +extern __typeof(gomp_loop_guided_next) GOMP_loop_nonmonotonic_guided_next + __attribute__((alias ("gomp_loop_guided_next"))); extern __typeof(gomp_loop_ordered_static_next) GOMP_loop_ordered_static_next __attribute__((alias ("gomp_loop_ordered_static_next"))); @@ -729,6 +776,21 @@ GOMP_loop_guided_start (long start, long end, long incr, long chunk_size, } bool +GOMP_loop_nonmonotonic_dynamic_start (long start, long end, long incr, + long chunk_size, long *istart, + long *iend) +{ + return gomp_loop_dynamic_start (start, end, incr, chunk_size, istart, iend); +} + +bool +GOMP_loop_nonmonotonic_guided_start (long start, long end, long incr, + long chunk_size, long *istart, long *iend) +{ + return gomp_loop_guided_start (start, end, incr, chunk_size, istart, iend); +} + +bool GOMP_loop_ordered_static_start (long start, long end, long incr, long chunk_size, long *istart, long *iend) { @@ -795,6 +857,18 @@ GOMP_loop_guided_next (long *istart, long *iend) } bool +GOMP_loop_nonmonotonic_dynamic_next (long *istart, long *iend) +{ + return gomp_loop_dynamic_next (istart, iend); +} + +bool +GOMP_loop_nonmonotonic_guided_next (long *istart, long *iend) +{ + return gomp_loop_guided_next (istart, iend); +} + +bool GOMP_loop_ordered_static_next (long *istart, long *iend) { return gomp_loop_ordered_static_next (istart, iend); |