0bac793ed6
This patch implements the omp_get_device_num library routine, specified in
OpenMP 5.0.
GOMP_DEVICE_NUM_VAR is a macro symbol which defines name of a "device number"
variable, is defined on the device-side libgomp, has it's address returned to
host-side libgomp during device initialization, and the host libgomp then
sets its value to the designated device number.
libgomp/ChangeLog:
* icv-device.c (omp_get_device_num): New API function, host side.
* fortran.c (omp_get_device_num_): New interface function.
* libgomp-plugin.h (GOMP_DEVICE_NUM_VAR): Define macro symbol.
* libgomp.map (OMP_5.0.2): New version space with omp_get_device_num,
omp_get_device_num_.
* libgomp.texi (omp_get_device_num): Add documentation for new API
function.
* omp.h.in (omp_get_device_num): Add declaration.
* omp_lib.f90.in (omp_get_device_num): Likewise.
* omp_lib.h.in (omp_get_device_num): Likewise.
* target.c (gomp_load_image_to_device): If additional entry for device
number exists at end of returned entries from 'load_image_func' hook,
copy the assigned device number over to the device variable.
* config/gcn/icv-device.c (GOMP_DEVICE_NUM_VAR): Define static global.
(omp_get_device_num): New API function, device side.
* plugin/plugin-gcn.c ("symcat.h"): Add include.
(GOMP_OFFLOAD_load_image): Add addresses of device GOMP_DEVICE_NUM_VAR
at end of returned 'target_table' entries.
* config/nvptx/icv-device.c (GOMP_DEVICE_NUM_VAR): Define static global.
(omp_get_device_num): New API function, device side.
* plugin/plugin-nvptx.c ("symcat.h"): Add include.
(GOMP_OFFLOAD_load_image): Add addresses of device GOMP_DEVICE_NUM_VAR
at end of returned 'target_table' entries.
* testsuite/lib/libgomp.exp
(check_effective_target_offload_target_intelmic): New function for
testing for intelmic offloading.
* testsuite/libgomp.c-c++-common/target-45.c: New test.
* testsuite/libgomp.fortran/target10.f90: New test.
176 lines
6.4 KiB
C
176 lines
6.4 KiB
C
/* The libgomp plugin API.
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Copyright (C) 2014-2021 Free Software Foundation, Inc.
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Contributed by Mentor Embedded.
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This file is part of the GNU Offloading and Multi Processing Library
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(libgomp).
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Libgomp is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef LIBGOMP_PLUGIN_H
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#define LIBGOMP_PLUGIN_H 1
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Capabilities of offloading devices. */
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#define GOMP_OFFLOAD_CAP_SHARED_MEM (1 << 0)
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#define GOMP_OFFLOAD_CAP_NATIVE_EXEC (1 << 1)
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#define GOMP_OFFLOAD_CAP_OPENMP_400 (1 << 2)
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#define GOMP_OFFLOAD_CAP_OPENACC_200 (1 << 3)
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/* Type of offload target device. Keep in sync with include/gomp-constants.h. */
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enum offload_target_type
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{
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OFFLOAD_TARGET_TYPE_HOST = 2,
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/* OFFLOAD_TARGET_TYPE_HOST_NONSHM = 3 removed. */
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OFFLOAD_TARGET_TYPE_NVIDIA_PTX = 5,
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OFFLOAD_TARGET_TYPE_INTEL_MIC = 6,
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OFFLOAD_TARGET_TYPE_HSA = 7,
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OFFLOAD_TARGET_TYPE_GCN = 8
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};
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/* Opaque type to represent plugin-dependent implementation of an
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OpenACC asynchronous queue. */
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struct goacc_asyncqueue;
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/* Used to keep a list of active asynchronous queues. */
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struct goacc_asyncqueue_list
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{
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struct goacc_asyncqueue *aq;
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struct goacc_asyncqueue_list *next;
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};
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typedef struct goacc_asyncqueue *goacc_aq;
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typedef struct goacc_asyncqueue_list *goacc_aq_list;
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/* OpenACC 'acc_get_property' support. */
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/* Device property values. Keep in sync with
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'libgomp/{openacc.h,openacc.f90}:acc_device_property_t'. */
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enum goacc_property
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{
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/* Mask to tell numeric and string values apart. */
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#define GOACC_PROPERTY_STRING_MASK 0x10000
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/* Start from 1 to catch uninitialized use. */
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GOACC_PROPERTY_MEMORY = 1,
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GOACC_PROPERTY_FREE_MEMORY = 2,
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GOACC_PROPERTY_NAME = GOACC_PROPERTY_STRING_MASK | 1,
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GOACC_PROPERTY_VENDOR = GOACC_PROPERTY_STRING_MASK | 2,
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GOACC_PROPERTY_DRIVER = GOACC_PROPERTY_STRING_MASK | 3
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};
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/* Container type for passing device properties. */
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union goacc_property_value
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{
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const char *ptr;
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size_t val;
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};
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/* Auxiliary struct, used for transferring pairs of addresses from plugin
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to libgomp. */
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struct addr_pair
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{
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uintptr_t start;
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uintptr_t end;
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};
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/* This symbol is to name a target side variable that holds the designated
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'device number' of the target device. The symbol needs to be available to
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libgomp code and the offload plugin (which in the latter case must be
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stringified). */
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#define GOMP_DEVICE_NUM_VAR __gomp_device_num
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/* Miscellaneous functions. */
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extern void *GOMP_PLUGIN_malloc (size_t) __attribute__ ((malloc));
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extern void *GOMP_PLUGIN_malloc_cleared (size_t) __attribute__ ((malloc));
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extern void *GOMP_PLUGIN_realloc (void *, size_t);
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void GOMP_PLUGIN_target_task_completion (void *);
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extern void GOMP_PLUGIN_debug (int, const char *, ...)
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__attribute__ ((format (printf, 2, 3)));
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extern void GOMP_PLUGIN_error (const char *, ...)
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__attribute__ ((format (printf, 1, 2)));
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extern void GOMP_PLUGIN_fatal (const char *, ...)
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__attribute__ ((noreturn, format (printf, 1, 2)));
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/* Prototypes for functions implemented by libgomp plugins. */
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extern const char *GOMP_OFFLOAD_get_name (void);
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extern unsigned int GOMP_OFFLOAD_get_caps (void);
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extern int GOMP_OFFLOAD_get_type (void);
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extern int GOMP_OFFLOAD_get_num_devices (void);
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extern bool GOMP_OFFLOAD_init_device (int);
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extern bool GOMP_OFFLOAD_fini_device (int);
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extern unsigned GOMP_OFFLOAD_version (void);
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extern int GOMP_OFFLOAD_load_image (int, unsigned, const void *,
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struct addr_pair **);
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extern bool GOMP_OFFLOAD_unload_image (int, unsigned, const void *);
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extern void *GOMP_OFFLOAD_alloc (int, size_t);
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extern bool GOMP_OFFLOAD_free (int, void *);
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extern bool GOMP_OFFLOAD_dev2host (int, void *, const void *, size_t);
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extern bool GOMP_OFFLOAD_host2dev (int, void *, const void *, size_t);
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extern bool GOMP_OFFLOAD_dev2dev (int, void *, const void *, size_t);
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extern bool GOMP_OFFLOAD_can_run (void *);
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extern void GOMP_OFFLOAD_run (int, void *, void *, void **);
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extern void GOMP_OFFLOAD_async_run (int, void *, void *, void **, void *);
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extern void GOMP_OFFLOAD_openacc_exec (void (*) (void *), size_t, void **,
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void **, unsigned *, void *);
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extern void *GOMP_OFFLOAD_openacc_create_thread_data (int);
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extern void GOMP_OFFLOAD_openacc_destroy_thread_data (void *);
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extern struct goacc_asyncqueue *GOMP_OFFLOAD_openacc_async_construct (int);
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extern bool GOMP_OFFLOAD_openacc_async_destruct (struct goacc_asyncqueue *);
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extern int GOMP_OFFLOAD_openacc_async_test (struct goacc_asyncqueue *);
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extern bool GOMP_OFFLOAD_openacc_async_synchronize (struct goacc_asyncqueue *);
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extern bool GOMP_OFFLOAD_openacc_async_serialize (struct goacc_asyncqueue *,
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struct goacc_asyncqueue *);
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extern void GOMP_OFFLOAD_openacc_async_queue_callback (struct goacc_asyncqueue *,
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void (*)(void *), void *);
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extern void GOMP_OFFLOAD_openacc_async_exec (void (*) (void *), size_t, void **,
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void **, unsigned *, void *,
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struct goacc_asyncqueue *);
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extern bool GOMP_OFFLOAD_openacc_async_dev2host (int, void *, const void *, size_t,
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struct goacc_asyncqueue *);
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extern bool GOMP_OFFLOAD_openacc_async_host2dev (int, void *, const void *, size_t,
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struct goacc_asyncqueue *);
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extern void *GOMP_OFFLOAD_openacc_cuda_get_current_device (void);
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extern void *GOMP_OFFLOAD_openacc_cuda_get_current_context (void);
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extern void *GOMP_OFFLOAD_openacc_cuda_get_stream (struct goacc_asyncqueue *);
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extern int GOMP_OFFLOAD_openacc_cuda_set_stream (struct goacc_asyncqueue *,
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void *);
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extern union goacc_property_value
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GOMP_OFFLOAD_openacc_get_property (int, enum goacc_property);
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#ifdef __cplusplus
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}
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#endif
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#endif
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