6c420193e8
This patch adds two new OpenMP runtime routines: omp_target_memcpy_async and omp_target_memcpy_rect_async. Both functions are introduced in OpenMP 5.1 as asynchronous variants of omp_target_memcpy and omp_target_memcpy_rect. In contrast to the synchronous variants, the asynchronous functions have two additional function parameters to allow the specification of task dependences: int depobj_count omp_depend_t *depobj_list integer(c_int), value :: depobj_count integer(omp_depend_kind), optional :: depobj_list(*) The implementation splits the synchronous functions into two parts: (a) check and (b) copy. Then (a) is used in the asynchronous functions for the sequential part, and the actual copy process (b) is executed in a new created task. The sequential part (a) takes into account the requirements for the return values: "The routine returns zero if successful. Otherwise, it returns a non-zero value." (omp_target_memcpy_async, OpenMP 5.1 spec, section 3.8.7) "An application can determine the number of inclusive dimensions supported by an implementation by passing NULL pointers (or C_NULL_PTR, for Fortran) for both dst and src. The routine returns the number of dimensions supported by the implementation for the specified device numbers. No copy operation is performed." (omp_target_memcpy_rect_async, OpenMP 5.1 spec, section 3.8.8) Due to asynchronicity an error is thrown if the asynchronous memcpy is not successful (in contrast to the synchronous functions which use a return value unequal to zero). gcc/ChangeLog: * omp-low.cc (omp_runtime_api_call): Added target_memcpy_async and target_memcpy_rect_async to omp_runtime_apis array. libgomp/ChangeLog: * libgomp.map: Added omp_target_memcpy_async and omp_target_memcpy_rect_async. * libgomp.texi: Both functions are now supported. * omp.h.in: Added omp_target_memcpy_async and omp_target_memcpy_rect_async. * omp_lib.f90.in: Added interfaces for both new functions. * omp_lib.h.in: Likewise. * target.c (ialias_redirect): Added for GOMP_task. (omp_target_memcpy): Restructured into check and copy part. (omp_target_memcpy_check): New helper function for omp_target_memcpy and omp_target_memcpy_async that checks requirements. (omp_target_memcpy_copy): New helper function for omp_target_memcpy and omp_target_memcpy_async that performs the memcpy. (omp_target_memcpy_async_helper): New helper function that is used in omp_target_memcpy_async for the asynchronous task. (omp_target_memcpy_async): Added. (omp_target_memcpy_rect): Restructured into check and copy part. (omp_target_memcpy_rect_check): New helper function for omp_target_memcpy_rect and omp_target_memcpy_rect_async that checks requirements. (omp_target_memcpy_rect_copy): New helper function for omp_target_memcpy_rect and omp_target_memcpy_rect_async that performs the memcpy. (omp_target_memcpy_rect_async_helper): New helper function that is used in omp_target_memcpy_rect_async for the asynchronous task. (omp_target_memcpy_rect_async): Added. * task.c (ialias): Added for GOMP_task. * testsuite/libgomp.c-c++-common/target-memcpy-async-1.c: New test. * testsuite/libgomp.c-c++-common/target-memcpy-async-2.c: New test. * testsuite/libgomp.c-c++-common/target-memcpy-rect-async-1.c: New test. * testsuite/libgomp.c-c++-common/target-memcpy-rect-async-2.c: New test. * testsuite/libgomp.fortran/target-memcpy-async-1.f90: New test. * testsuite/libgomp.fortran/target-memcpy-async-2.f90: New test. * testsuite/libgomp.fortran/target-memcpy-rect-async-1.f90: New test. * testsuite/libgomp.fortran/target-memcpy-rect-async-2.f90: New test. |
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| .. | ||
| config | ||
| plugin | ||
| testsuite | ||
| .gitattributes | ||
| acc_prof.h | ||
| acinclude.m4 | ||
| aclocal.m4 | ||
| affinity-fmt.c | ||
| affinity.c | ||
| alloc.c | ||
| allocator.c | ||
| atomic.c | ||
| barrier.c | ||
| ChangeLog | ||
| ChangeLog.graphite | ||
| config.h.in | ||
| configure | ||
| configure.ac | ||
| configure.tgt | ||
| critical.c | ||
| env.c | ||
| error.c | ||
| fortran.c | ||
| hashtab.h | ||
| icv-device.c | ||
| icv.c | ||
| iter_ull.c | ||
| iter.c | ||
| libgomp_f.h.in | ||
| libgomp_g.h | ||
| libgomp-plugin.c | ||
| libgomp-plugin.h | ||
| libgomp.h | ||
| libgomp.map | ||
| libgomp.spec.in | ||
| libgomp.texi | ||
| lock.c | ||
| loop_ull.c | ||
| loop.c | ||
| Makefile.am | ||
| Makefile.in | ||
| oacc-async.c | ||
| oacc-cuda.c | ||
| oacc-host.c | ||
| oacc-init.c | ||
| oacc-int.h | ||
| oacc-mem.c | ||
| oacc-parallel.c | ||
| oacc-plugin.c | ||
| oacc-plugin.h | ||
| oacc-profiling.c | ||
| oacc-target.c | ||
| omp_lib.f90.in | ||
| omp_lib.h.in | ||
| omp.h.in | ||
| openacc_lib.h | ||
| openacc.f90 | ||
| openacc.h | ||
| ordered.c | ||
| parallel.c | ||
| priority_queue.c | ||
| priority_queue.h | ||
| scope.c | ||
| sections.c | ||
| secure_getenv.h | ||
| single.c | ||
| splay-tree.c | ||
| splay-tree.h | ||
| target.c | ||
| task.c | ||
| taskloop.c | ||
| team.c | ||
| teams.c | ||
| work.c | ||