gcc/libgomp/omp_lib.h.in
Jakub Jelinek 1158fe4340 openmp: Conforming device numbers and omp_{initial,invalid}_device
OpenMP 5.2 changed once more what device numbers are allowed.
In 5.1, valid device numbers were [0, omp_get_num_devices()].
5.2 makes also -1 valid (calls it omp_initial_device), which is equivalent
in behavior to omp_get_num_devices() number but has the advantage that it
is a constant.  And it also introduces omp_invalid_device which is
also a constant with implementation defined value < -1.  That value should
act like sNaN, any time any device construct (GOMP_target*) or OpenMP runtime
API routine is asked for such a device, the program is terminated.
And if OMP_TARGET_OFFLOAD=mandatory, all non-conforming device numbers (which
is all but [-1, omp_get_num_devices()] other than omp_invalid_device)
must be treated like omp_invalid_device.

For device constructs, we have a compatibility problem, we've historically
used 2 magic negative values to mean something special.
GOMP_DEVICE_ICV (-1) means device clause wasn't present, pick the
		     omp_get_default_device () number
GOMP_DEVICE_FALLBACK (-2) means the host device (this is used e.g. for
			  #pragma omp target if (cond)
			  where if cond is false, we pass -2
But 5.2 requires that omp_initial_device is -1 (there were discussions
about it, advantage of -1 is that one can say iterate over the
[-1, omp_get_num_devices()-1] range to get all devices starting with
the host/initial one.
And also, if user passes -2, unless it is omp_invalid_device, we need to
treat it like non-conforming with OMP_TARGET_OFFLOAD=mandatory.

So, the patch does on the compiler side some number remapping,
user_device_num >= -2U ? user_device_num - 1 : user_device_num.
This remapping is done at compile time if device clause has constant
argument, otherwise at runtime, and means that for user -1 (omp_initial_device)
we pass -2 to GOMP_* in the runtime library where it treats it like host
fallback, while -2 is remapped to -3 (one of the non-conforming device numbers,
for those it doesn't matter which one is which).
omp_invalid_device is then -4.
For the OpenMP device runtime APIs, no remapping is done.

This patch doesn't deal with the initial default-device-var for
OMP_TARGET_OFFLOAD=mandatory , the spec says that the inital ICV value
for that should in that case depend on whether there are any offloading
devices or not (if not, should be omp_invalid_device), but that means
we can't determine the number of devices lazily (and let libraries have the
possibility to register their offloading data etc.).

2022-06-13  Jakub Jelinek  <jakub@redhat.com>

gcc/
	* omp-expand.cc (expand_omp_target): Remap user provided
	device clause arguments, -1 to -2 and -2 to -3, either
	at compile time if constant, or at runtime.
include/
	* gomp-constants.h (GOMP_DEVICE_INVALID): Define.
libgomp/
	* omp.h.in (omp_initial_device, omp_invalid_device): New enumerators.
	* omp_lib.f90.in (omp_initial_device, omp_invalid_device): New
	parameters.
	* omp_lib.h.in (omp_initial_device, omp_invalid_device): Likewise.
	* target.c (resolve_device): Add remapped argument, handle
	GOMP_DEVICE_ICV only if remapped is true (and clear remapped),
	for negative values, treat GOMP_DEVICE_FALLBACK as fallback only
	if remapped, otherwise treat omp_initial_device that way.  For
	omp_invalid_device, always emit gomp_fatal, even when
	OMP_TARGET_OFFLOAD isn't mandatory.
	(GOMP_target, GOMP_target_ext, GOMP_target_data, GOMP_target_data_ext,
	GOMP_target_update, GOMP_target_update_ext,
	GOMP_target_enter_exit_data): Pass true as remapped argument to
	resolve_device.
	(omp_target_alloc, omp_target_free, omp_target_is_present,
	omp_target_memcpy_check, omp_target_associate_ptr,
	omp_target_disassociate_ptr, omp_get_mapped_ptr,
	omp_target_is_accessible): Pass false as remapped argument to
	resolve_device.  Treat omp_initial_device the same as
	gomp_get_num_devices ().  Don't bypass resolve_device calls if
	device_num is negative.
	(omp_pause_resource): Treat omp_initial_device the same as
	gomp_get_num_devices ().  Call resolve_device.
	* icv-device.c (omp_set_default_device): Always set to device_num
	even when it is negative.
	* libgomp.texi: Document that Conforming device numbers,
	omp_initial_device and omp_invalid_device is implemented.
	* testsuite/libgomp.c/target-41.c (main): Add test with
	omp_initial_device.
	* testsuite/libgomp.c/target-45.c: New test.
	* testsuite/libgomp.c/target-46.c: New test.
	* testsuite/libgomp.c/target-47.c: New test.
	* testsuite/libgomp.c-c++-common/target-is-accessible-1.c (main): Add
	test with omp_initial_device.  Use -5 instead of -1 for negative value
	test.
	* testsuite/libgomp.fortran/target-is-accessible-1.f90 (main):
	Likewise.  Reorder stop numbers.
2022-06-13 14:02:37 +02:00

483 lines
21 KiB
C

! Copyright (C) 2005-2022 Free Software Foundation, Inc.
! Contributed by Jakub Jelinek <jakub@redhat.com>.
! This file is part of the GNU Offloading and Multi Processing Library
! (libgomp).
! Libgomp is free software; you can redistribute it and/or modify it
! under the terms of the GNU General Public License as published by
! the Free Software Foundation; either version 3, or (at your option)
! any later version.
! Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
! FOR A PARTICULAR PURPOSE. See the GNU General Public License for
! more details.
! Under Section 7 of GPL version 3, you are granted additional
! permissions described in the GCC Runtime Library Exception, version
! 3.1, as published by the Free Software Foundation.
! You should have received a copy of the GNU General Public License and
! a copy of the GCC Runtime Library Exception along with this program;
! see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
! <http://www.gnu.org/licenses/>.
integer omp_lock_kind, omp_nest_lock_kind, openmp_version
parameter (omp_lock_kind = @OMP_LOCK_KIND@)
parameter (omp_nest_lock_kind = @OMP_NEST_LOCK_KIND@)
integer omp_depend_kind
parameter (omp_depend_kind = @OMP_DEPEND_KIND@)
integer omp_sched_kind
parameter (omp_sched_kind = 4)
integer (omp_sched_kind) omp_sched_static, omp_sched_dynamic
integer (omp_sched_kind) omp_sched_guided, omp_sched_auto
parameter (omp_sched_static = 1)
parameter (omp_sched_dynamic = 2)
parameter (omp_sched_guided = 3)
parameter (omp_sched_auto = 4)
integer omp_proc_bind_kind
parameter (omp_proc_bind_kind = 4)
integer (omp_proc_bind_kind) omp_proc_bind_false
integer (omp_proc_bind_kind) omp_proc_bind_true
integer (omp_proc_bind_kind) omp_proc_bind_primary
integer (omp_proc_bind_kind) omp_proc_bind_master
integer (omp_proc_bind_kind) omp_proc_bind_close
integer (omp_proc_bind_kind) omp_proc_bind_spread
parameter (omp_proc_bind_false = 0)
parameter (omp_proc_bind_true = 1)
parameter (omp_proc_bind_primary = 2)
parameter (omp_proc_bind_master = 2)
parameter (omp_proc_bind_close = 3)
parameter (omp_proc_bind_spread = 4)
integer omp_sync_hint_kind
integer omp_lock_hint_kind
parameter (omp_sync_hint_kind = 4)
parameter (omp_lock_hint_kind = omp_sync_hint_kind)
integer (omp_sync_hint_kind) omp_sync_hint_none
integer (omp_lock_hint_kind) omp_lock_hint_none
integer (omp_sync_hint_kind) omp_sync_hint_uncontended
integer (omp_lock_hint_kind) omp_lock_hint_uncontended
integer (omp_sync_hint_kind) omp_sync_hint_contended
integer (omp_sync_hint_kind) omp_lock_hint_contended
integer (omp_lock_hint_kind) omp_sync_hint_nonspeculative
integer (omp_lock_hint_kind) omp_lock_hint_nonspeculative
integer (omp_sync_hint_kind) omp_sync_hint_speculative
integer (omp_lock_hint_kind) omp_lock_hint_speculative
parameter (omp_sync_hint_none = 0)
parameter (omp_lock_hint_none = 0)
parameter (omp_sync_hint_uncontended = 1)
parameter (omp_lock_hint_uncontended = 1)
parameter (omp_sync_hint_contended = 2)
parameter (omp_lock_hint_contended = 2)
parameter (omp_sync_hint_nonspeculative = 4)
parameter (omp_lock_hint_nonspeculative = 4)
parameter (omp_sync_hint_speculative = 8)
parameter (omp_lock_hint_speculative = 8)
parameter (openmp_version = 201511)
integer omp_pause_resource_kind
parameter (omp_pause_resource_kind = 4)
integer (omp_pause_resource_kind) omp_pause_soft
integer (omp_pause_resource_kind) omp_pause_hard
parameter (omp_pause_soft = 1)
parameter (omp_pause_hard = 2)
integer omp_allocator_handle_kind, omp_alloctrait_key_kind
integer omp_alloctrait_val_kind, omp_memspace_handle_kind
integer omp_event_handle_kind
parameter (omp_allocator_handle_kind = @INTPTR_T_KIND@)
parameter (omp_alloctrait_key_kind = 4)
parameter (omp_alloctrait_val_kind = @INTPTR_T_KIND@)
parameter (omp_memspace_handle_kind = @INTPTR_T_KIND@)
parameter (omp_event_handle_kind = @INTPTR_T_KIND@)
integer (omp_alloctrait_key_kind) omp_atk_sync_hint
integer (omp_alloctrait_key_kind) omp_atk_alignment
integer (omp_alloctrait_key_kind) omp_atk_access
integer (omp_alloctrait_key_kind) omp_atk_pool_size
integer (omp_alloctrait_key_kind) omp_atk_fallback
integer (omp_alloctrait_key_kind) omp_atk_fb_data
integer (omp_alloctrait_key_kind) omp_atk_pinned
integer (omp_alloctrait_key_kind) omp_atk_partition
parameter (omp_atk_sync_hint = 1)
parameter (omp_atk_alignment = 2)
parameter (omp_atk_access = 3)
parameter (omp_atk_pool_size = 4)
parameter (omp_atk_fallback = 5)
parameter (omp_atk_fb_data = 6)
parameter (omp_atk_pinned = 7)
parameter (omp_atk_partition = 8)
integer (omp_alloctrait_val_kind) omp_atv_false
integer (omp_alloctrait_val_kind) omp_atv_true
integer (omp_alloctrait_val_kind) omp_atv_default
integer (omp_alloctrait_val_kind) omp_atv_contended
integer (omp_alloctrait_val_kind) omp_atv_uncontended
integer (omp_alloctrait_val_kind) omp_atv_serialized
integer (omp_alloctrait_val_kind) omp_atv_sequential
integer (omp_alloctrait_val_kind) omp_atv_private
integer (omp_alloctrait_val_kind) omp_atv_all
integer (omp_alloctrait_val_kind) omp_atv_thread
integer (omp_alloctrait_val_kind) omp_atv_pteam
integer (omp_alloctrait_val_kind) omp_atv_cgroup
integer (omp_alloctrait_val_kind) omp_atv_default_mem_fb
integer (omp_alloctrait_val_kind) omp_atv_null_fb
integer (omp_alloctrait_val_kind) omp_atv_abort_fb
integer (omp_alloctrait_val_kind) omp_atv_allocator_fb
integer (omp_alloctrait_val_kind) omp_atv_environment
integer (omp_alloctrait_val_kind) omp_atv_nearest
integer (omp_alloctrait_val_kind) omp_atv_blocked
integer (omp_alloctrait_val_kind) omp_atv_interleaved
parameter (omp_atv_default = -1)
parameter (omp_atv_false = 0)
parameter (omp_atv_true = 1)
parameter (omp_atv_contended = 3)
parameter (omp_atv_uncontended = 4)
parameter (omp_atv_serialized = 5)
parameter (omp_atv_sequential = omp_atv_serialized)
parameter (omp_atv_private = 6)
parameter (omp_atv_all = 7)
parameter (omp_atv_thread = 8)
parameter (omp_atv_pteam = 9)
parameter (omp_atv_cgroup = 10)
parameter (omp_atv_default_mem_fb = 11)
parameter (omp_atv_null_fb = 12)
parameter (omp_atv_abort_fb = 13)
parameter (omp_atv_allocator_fb = 14)
parameter (omp_atv_environment = 15)
parameter (omp_atv_nearest = 16)
parameter (omp_atv_blocked = 17)
parameter (omp_atv_interleaved = 18)
integer (omp_allocator_handle_kind) omp_null_allocator
integer (omp_allocator_handle_kind) omp_default_mem_alloc
integer (omp_allocator_handle_kind) omp_large_cap_mem_alloc
integer (omp_allocator_handle_kind) omp_const_mem_alloc
integer (omp_allocator_handle_kind) omp_high_bw_mem_alloc
integer (omp_allocator_handle_kind) omp_low_lat_mem_alloc
integer (omp_allocator_handle_kind) omp_cgroup_mem_alloc
integer (omp_allocator_handle_kind) omp_pteam_mem_alloc
integer (omp_allocator_handle_kind) omp_thread_mem_alloc
parameter (omp_null_allocator = 0)
parameter (omp_default_mem_alloc = 1)
parameter (omp_large_cap_mem_alloc = 2)
parameter (omp_const_mem_alloc = 3)
parameter (omp_high_bw_mem_alloc = 4)
parameter (omp_low_lat_mem_alloc = 5)
parameter (omp_cgroup_mem_alloc = 6)
parameter (omp_pteam_mem_alloc = 7)
parameter (omp_thread_mem_alloc = 8)
integer (omp_memspace_handle_kind) omp_default_mem_space
integer (omp_memspace_handle_kind) omp_large_cap_mem_space
integer (omp_memspace_handle_kind) omp_const_mem_space
integer (omp_memspace_handle_kind) omp_high_bw_mem_space
integer (omp_memspace_handle_kind) omp_low_lat_mem_space
parameter (omp_default_mem_space = 0)
parameter (omp_large_cap_mem_space = 1)
parameter (omp_const_mem_space = 2)
parameter (omp_high_bw_mem_space = 3)
parameter (omp_low_lat_mem_space = 4)
integer omp_initial_device, omp_invalid_device
parameter (omp_initial_device = -1)
parameter (omp_invalid_device = -4)
type omp_alloctrait
integer (omp_alloctrait_key_kind) key
integer (omp_alloctrait_val_kind) value
end type omp_alloctrait
external omp_init_lock, omp_init_nest_lock
external omp_init_lock_with_hint
external omp_init_nest_lock_with_hint
external omp_destroy_lock, omp_destroy_nest_lock
external omp_set_lock, omp_set_nest_lock
external omp_unset_lock, omp_unset_nest_lock
external omp_set_dynamic, omp_set_nested
external omp_set_num_threads
external omp_get_dynamic, omp_get_nested
logical(4) omp_get_dynamic, omp_get_nested
external omp_test_lock, omp_in_parallel
logical(4) omp_test_lock, omp_in_parallel
external omp_get_max_threads, omp_get_num_procs
integer(4) omp_get_max_threads, omp_get_num_procs
external omp_get_num_threads, omp_get_thread_num
integer(4) omp_get_num_threads, omp_get_thread_num
external omp_test_nest_lock
integer(4) omp_test_nest_lock
external omp_get_wtick, omp_get_wtime
double precision omp_get_wtick, omp_get_wtime
external omp_set_schedule, omp_get_schedule
external omp_get_thread_limit, omp_set_max_active_levels
external omp_get_max_active_levels, omp_get_level
external omp_get_ancestor_thread_num, omp_get_team_size
external omp_get_active_level
external omp_get_supported_active_levels
integer(4) omp_get_thread_limit, omp_get_max_active_levels
integer(4) omp_get_level, omp_get_ancestor_thread_num
integer(4) omp_get_team_size, omp_get_active_level
integer(4) omp_get_supported_active_levels
external omp_in_final
logical(4) omp_in_final
external omp_get_cancellation
logical(4) omp_get_cancellation
external omp_get_proc_bind
integer(omp_proc_bind_kind) omp_get_proc_bind
integer(4) omp_get_num_places
external omp_get_num_places
integer(4) omp_get_place_num_procs
external omp_get_place_num_procs
external omp_get_place_proc_ids
integer(4) omp_get_place_num
external omp_get_place_num
integer(4) omp_get_partition_num_places
external omp_get_partition_num_places
external omp_get_partition_place_nums
external omp_set_default_device, omp_get_default_device
external omp_get_num_devices, omp_get_num_teams
external omp_get_team_num
integer(4) omp_get_default_device, omp_get_num_devices
integer(4) omp_get_num_teams, omp_get_team_num
external omp_is_initial_device
logical(4) omp_is_initial_device
external omp_get_initial_device
integer(4) omp_get_initial_device
external omp_get_device_num
integer(4) omp_get_device_num
external omp_get_max_task_priority
integer(4) omp_get_max_task_priority
external omp_set_num_teams, omp_set_teams_thread_limit
external omp_get_max_teams, omp_get_teams_thread_limit
integer(4) omp_get_max_teams, omp_get_teams_thread_limit
external omp_fulfill_event
external omp_set_affinity_format, omp_get_affinity_format
external omp_display_affinity, omp_capture_affinity
integer(4) omp_get_affinity_format
integer(4) omp_capture_affinity
external omp_pause_resource, omp_pause_resource_all
integer(4) omp_pause_resource
integer(4) omp_pause_resource_all
external omp_init_allocator
integer (omp_allocator_handle_kind) omp_init_allocator
external omp_destroy_allocator
external omp_set_default_allocator
external omp_get_default_allocator
integer (omp_allocator_handle_kind) omp_get_default_allocator
external omp_display_env
interface
function omp_alloc (size, allocator) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t
use, intrinsic :: omp_lib_kinds
type(c_ptr) :: omp_alloc
integer(c_size_t), value :: size
integer(omp_allocator_handle_kind), value :: allocator
end function omp_alloc
end interface
interface
function omp_aligned_alloc (alignment, size, allocator) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t
use, intrinsic :: omp_lib_kinds
type(c_ptr) :: omp_aligned_alloc
integer(c_size_t), value :: alignment, size
integer(omp_allocator_handle_kind), value :: allocator
end function omp_aligned_alloc
end interface
interface
subroutine omp_free(ptr, allocator) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr
use, intrinsic :: omp_lib_kinds
type(c_ptr), value :: ptr
integer(omp_allocator_handle_kind), value :: allocator
end subroutine omp_free
end interface
interface
function omp_calloc (nmemb, size, allocator) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t
use, intrinsic :: omp_lib_kinds
type(c_ptr) :: omp_calloc
integer(c_size_t), value :: nmemb, size
integer(omp_allocator_handle_kind), value :: allocator
end function omp_calloc
end interface
interface
function omp_aligned_calloc (alignment, nmemb, size, allocator) &
& bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t
use, intrinsic :: omp_lib_kinds
type(c_ptr) :: omp_aligned_calloc
integer(c_size_t), value :: alignment, nmemb, size
integer(omp_allocator_handle_kind), value :: allocator
end function omp_aligned_calloc
end interface
interface
function omp_realloc (ptr, size, allocator, free_allocator) &
& bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t
use, intrinsic :: omp_lib_kinds
type(c_ptr) :: omp_realloc
type(c_ptr), value :: ptr
integer(c_size_t), value :: size
integer(omp_allocator_handle_kind), value :: allocator
integer(omp_allocator_handle_kind), value :: free_allocator
end function omp_realloc
end interface
interface
function omp_target_alloc (size, device_num) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t, c_int
type(c_ptr) :: omp_target_alloc
integer(c_size_t), value :: size
integer(c_int), value :: device_num
end function omp_target_alloc
end interface
interface
subroutine omp_target_free (device_ptr, device_num) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_int
type(c_ptr), value :: device_ptr
integer(c_int), value :: device_num
end subroutine omp_target_free
end interface
interface
function omp_target_is_present (ptr, device_num) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_int
integer(c_int) :: omp_target_is_present
type(c_ptr), value :: ptr
integer(c_int), value :: device_num
end function omp_target_is_present
end interface
interface
function omp_target_memcpy (dst, src, length, dst_offset, &
& src_offset, dst_device_num, &
& src_device_num) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_int, c_size_t
integer(c_int) :: omp_target_memcpy
type(c_ptr), value :: dst, src
integer(c_size_t), value :: length, dst_offset, src_offset
integer(c_int), value :: dst_device_num, src_device_num
end function omp_target_memcpy
end interface
interface
function omp_target_memcpy_async (dst, src, length, dst_offset, &
& src_offset, dst_device_num, &
& src_device_num, depobj_count, &
& depobj_list) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_int, c_size_t
import :: omp_depend_kind
integer(c_int) :: omp_target_memcpy_async
type(c_ptr), value :: dst, src
integer(c_size_t), value :: length, dst_offset, src_offset
integer(c_int), value :: dst_device_num, src_device_num
integer(c_int), value :: depobj_count
integer(omp_depend_kind), optional :: depobj_list(*)
end function omp_target_memcpy_async
end interface
interface
function omp_target_memcpy_rect (dst,src,element_size, num_dims, &
& volume, dst_offsets, &
& src_offsets, dst_dimensions, &
& src_dimensions, dst_device_num, &
& src_device_num) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_int, c_size_t
integer(c_int) :: omp_target_memcpy_rect
type(c_ptr), value :: dst, src
integer(c_size_t), value :: element_size
integer(c_int), value :: num_dims
integer(c_int), value :: dst_device_num, src_device_num
integer(c_size_t), intent(in) :: volume(*), dst_offsets(*)
integer(c_size_t), intent(in) :: src_offsets(*)
integer(c_size_t), intent(in) :: dst_dimensions(*)
integer(c_size_t), intent(in) :: src_dimensions(*)
end function omp_target_memcpy_rect
end interface
interface
function omp_target_memcpy_rect_async (dst,src,element_size, &
& num_dims, volume, &
& dst_offsets, src_offsets, &
& dst_dimensions, &
& src_dimensions, &
& dst_device_num, &
& src_device_num, &
& depobj_count, &
& depobj_list) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_int, c_size_t
import :: omp_depend_kind
integer(c_int) :: omp_target_memcpy_rect_async
type(c_ptr), value :: dst, src
integer(c_size_t), value :: element_size
integer(c_int), value :: num_dims, depobj_count
integer(c_int), value :: dst_device_num, src_device_num
integer(c_size_t), intent(in) :: volume(*), dst_offsets(*)
integer(c_size_t), intent(in) :: src_offsets(*)
integer(c_size_t), intent(in) :: dst_dimensions(*)
integer(c_size_t), intent(in) :: src_dimensions(*)
integer(omp_depend_kind), optional :: depobj_list(*)
end function omp_target_memcpy_rect_async
end interface
interface
function omp_target_associate_ptr (host_ptr, device_ptr, size, &
& device_offset, device_num) &
& bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t, c_int
integer(c_int) :: omp_target_associate_ptr
type(c_ptr), value :: host_ptr, device_ptr
integer(c_size_t), value :: size, device_offset
integer(c_int), value :: device_num
end function omp_target_associate_ptr
end interface
interface
function omp_target_disassociate_ptr (ptr, device_num) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_int
integer(c_int) :: omp_target_disassociate_ptr
type(c_ptr), value :: ptr
integer(c_int), value :: device_num
end function omp_target_disassociate_ptr
end interface
interface
function omp_get_mapped_ptr (ptr, device_num) bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_int
type(c_ptr) :: omp_get_mapped_ptr
type(c_ptr), value :: ptr
integer(c_int), value :: device_num
end function omp_get_mapped_ptr
end interface
interface
function omp_target_is_accessible (ptr, size, device_num) &
& bind(c)
use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t, c_int
integer(c_int) :: omp_target_is_accessible
type(c_ptr), value :: ptr
integer(c_size_t), value :: size
integer(c_int), value :: device_num
end function omp_target_is_accessible
end interface