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gcc/libgomp/omp.h.in
Kwok Cheung Yeung 8949b985db openmp: Add support for the omp_get_supported_active_levels runtime library routine 
This patch implements the omp_get_supported_active_levels runtime routine
from the OpenMP 5.0 specification, which returns the maximum number of
active nested parallel regions supported by this implementation.  The
current maximum (set using the omp_set_max_active_levels routine or the
OMP_MAX_ACTIVE_LEVELS environment variable) cannot exceed this number.

2020-10-13  Kwok Cheung Yeung  <kcy@codesourcery.com>

	libgomp/
	* env.c (gomp_max_active_levels_var): Initialize to
	gomp_supported_active_levels.
	(initialize_env): Limit gomp_max_active_levels_var to be at most
	equal to gomp_supported_active_levels.
	* fortran.c (omp_get_supported_active_levels): Add ialias_redirect.
	(omp_get_supported_active_levels_): New.
	* icv.c (omp_set_max_active_levels): Limit gomp_max_active_levels_var
	to at most equal to gomp_supported_active_levels.
	(omp_get_supported_active_levels): New.
	* libgomp.h (gomp_supported_active_levels): New.
	* libgomp.map (OMP_5.0.1): Add omp_get_supported_active_levels and
	omp_get_supported_active_levels_.
	* libgomp.texi (omp_get_supported_active_levels): New.
	(omp_set_max_active_levels): Update.  Add reference to
	omp_get_supported_active_levels.
	* omp.h.in (omp_get_supported_active_levels): New.
	* omp_lib.f90.in (omp_get_supported_active_levels): New.
	* omp_lib.h.in (omp_get_supported_active_levels): New.
	* testsuite/libgomp.c/lib-2.c (main): Check omp_get_max_active_levels
	against omp_get_supported_active_levels.
	* testsuite/libgomp.fortran/lib4.f90 (lib4): Likewise.
2020-10-13 13:21:02 -07:00

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/* Copyright (C) 2005-2020 Free Software Foundation, Inc.
Contributed by Richard Henderson <rth@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/>. */
#ifndef _OMP_H
#define _OMP_H 1
#ifndef _LIBGOMP_OMP_LOCK_DEFINED
#define _LIBGOMP_OMP_LOCK_DEFINED 1
/* These two structures get edited by the libgomp build process to
reflect the shape of the two types. Their internals are private
to the library. */
typedef struct
{
unsigned char _x[@OMP_LOCK_SIZE@]
__attribute__((__aligned__(@OMP_LOCK_ALIGN@)));
} omp_lock_t;
typedef struct
{
unsigned char _x[@OMP_NEST_LOCK_SIZE@]
__attribute__((__aligned__(@OMP_NEST_LOCK_ALIGN@)));
} omp_nest_lock_t;
#endif
typedef enum omp_sched_t
{
omp_sched_static = 1,
omp_sched_dynamic = 2,
omp_sched_guided = 3,
omp_sched_auto = 4,
omp_sched_monotonic = 0x80000000U
} omp_sched_t;
typedef enum omp_proc_bind_t
{
omp_proc_bind_false = 0,
omp_proc_bind_true = 1,
omp_proc_bind_master = 2,
omp_proc_bind_close = 3,
omp_proc_bind_spread = 4
} omp_proc_bind_t;
typedef enum omp_sync_hint_t
{
omp_sync_hint_none = 0,
omp_lock_hint_none = omp_sync_hint_none,
omp_sync_hint_uncontended = 1,
omp_lock_hint_uncontended = omp_sync_hint_uncontended,
omp_sync_hint_contended = 2,
omp_lock_hint_contended = omp_sync_hint_contended,
omp_sync_hint_nonspeculative = 4,
omp_lock_hint_nonspeculative = omp_sync_hint_nonspeculative,
omp_sync_hint_speculative = 8,
omp_lock_hint_speculative = omp_sync_hint_speculative
} omp_sync_hint_t;
typedef omp_sync_hint_t omp_lock_hint_t;
typedef struct __attribute__((__aligned__ (sizeof (void *)))) omp_depend_t
{
char __omp_depend_t__[2 * sizeof (void *)];
} omp_depend_t;
typedef enum omp_pause_resource_t
{
omp_pause_soft = 1,
omp_pause_hard = 2
} omp_pause_resource_t;
typedef __UINTPTR_TYPE__ omp_uintptr_t;
#if __cplusplus >= 201103L
# define __GOMP_UINTPTR_T_ENUM : omp_uintptr_t
#else
# define __GOMP_UINTPTR_T_ENUM
#endif
typedef enum omp_memspace_handle_t __GOMP_UINTPTR_T_ENUM
{
omp_default_mem_space = 0,
omp_large_cap_mem_space = 1,
omp_const_mem_space = 2,
omp_high_bw_mem_space = 3,
omp_low_lat_mem_space = 4,
__omp_memspace_handle_t_max__ = __UINTPTR_MAX__
} omp_memspace_handle_t;
typedef enum omp_allocator_handle_t __GOMP_UINTPTR_T_ENUM
{
omp_null_allocator = 0,
omp_default_mem_alloc = 1,
omp_large_cap_mem_alloc = 2,
omp_const_mem_alloc = 3,
omp_high_bw_mem_alloc = 4,
omp_low_lat_mem_alloc = 5,
omp_cgroup_mem_alloc = 6,
omp_pteam_mem_alloc = 7,
omp_thread_mem_alloc = 8,
__omp_allocator_handle_t_max__ = __UINTPTR_MAX__
} omp_allocator_handle_t;
typedef enum omp_alloctrait_key_t
{
omp_atk_sync_hint = 1,
omp_atk_alignment = 2,
omp_atk_access = 3,
omp_atk_pool_size = 4,
omp_atk_fallback = 5,
omp_atk_fb_data = 6,
omp_atk_pinned = 7,
omp_atk_partition = 8
} omp_alloctrait_key_t;
typedef enum omp_alloctrait_value_t
{
omp_atv_default = (__UINTPTR_TYPE__) -1,
omp_atv_false = 0,
omp_atv_true = 1,
omp_atv_contended = 3,
omp_atv_uncontended = 4,
omp_atv_serialized = 5,
omp_atv_sequential = omp_atv_serialized,
omp_atv_private = 6,
omp_atv_all = 7,
omp_atv_thread = 8,
omp_atv_pteam = 9,
omp_atv_cgroup = 10,
omp_atv_default_mem_fb = 11,
omp_atv_null_fb = 12,
omp_atv_abort_fb = 13,
omp_atv_allocator_fb = 14,
omp_atv_environment = 15,
omp_atv_nearest = 16,
omp_atv_blocked = 17,
omp_atv_interleaved = 18
} omp_alloctrait_value_t;
typedef struct omp_alloctrait_t
{
omp_alloctrait_key_t key;
omp_uintptr_t value;
} omp_alloctrait_t;
#ifdef __cplusplus
extern "C" {
# define __GOMP_NOTHROW throw ()
# define __GOMP_DEFAULT_NULL_ALLOCATOR = omp_null_allocator
#else
# define __GOMP_NOTHROW __attribute__((__nothrow__))
# define __GOMP_DEFAULT_NULL_ALLOCATOR
#endif
extern void omp_set_num_threads (int) __GOMP_NOTHROW;
extern int omp_get_num_threads (void) __GOMP_NOTHROW;
extern int omp_get_max_threads (void) __GOMP_NOTHROW;
extern int omp_get_thread_num (void) __GOMP_NOTHROW;
extern int omp_get_num_procs (void) __GOMP_NOTHROW;
extern int omp_in_parallel (void) __GOMP_NOTHROW;
extern void omp_set_dynamic (int) __GOMP_NOTHROW;
extern int omp_get_dynamic (void) __GOMP_NOTHROW;
extern void omp_set_nested (int) __GOMP_NOTHROW;
extern int omp_get_nested (void) __GOMP_NOTHROW;
extern void omp_init_lock (omp_lock_t *) __GOMP_NOTHROW;
extern void omp_init_lock_with_hint (omp_lock_t *, omp_sync_hint_t)
__GOMP_NOTHROW;
extern void omp_destroy_lock (omp_lock_t *) __GOMP_NOTHROW;
extern void omp_set_lock (omp_lock_t *) __GOMP_NOTHROW;
extern void omp_unset_lock (omp_lock_t *) __GOMP_NOTHROW;
extern int omp_test_lock (omp_lock_t *) __GOMP_NOTHROW;
extern void omp_init_nest_lock (omp_nest_lock_t *) __GOMP_NOTHROW;
extern void omp_init_nest_lock_with_hint (omp_nest_lock_t *, omp_sync_hint_t)
__GOMP_NOTHROW;
extern void omp_destroy_nest_lock (omp_nest_lock_t *) __GOMP_NOTHROW;
extern void omp_set_nest_lock (omp_nest_lock_t *) __GOMP_NOTHROW;
extern void omp_unset_nest_lock (omp_nest_lock_t *) __GOMP_NOTHROW;
extern int omp_test_nest_lock (omp_nest_lock_t *) __GOMP_NOTHROW;
extern double omp_get_wtime (void) __GOMP_NOTHROW;
extern double omp_get_wtick (void) __GOMP_NOTHROW;
extern void omp_set_schedule (omp_sched_t, int) __GOMP_NOTHROW;
extern void omp_get_schedule (omp_sched_t *, int *) __GOMP_NOTHROW;
extern int omp_get_thread_limit (void) __GOMP_NOTHROW;
extern void omp_set_max_active_levels (int) __GOMP_NOTHROW;
extern int omp_get_max_active_levels (void) __GOMP_NOTHROW;
extern int omp_get_supported_active_levels (void) __GOMP_NOTHROW;
extern int omp_get_level (void) __GOMP_NOTHROW;
extern int omp_get_ancestor_thread_num (int) __GOMP_NOTHROW;
extern int omp_get_team_size (int) __GOMP_NOTHROW;
extern int omp_get_active_level (void) __GOMP_NOTHROW;
extern int omp_in_final (void) __GOMP_NOTHROW;
extern int omp_get_cancellation (void) __GOMP_NOTHROW;
extern omp_proc_bind_t omp_get_proc_bind (void) __GOMP_NOTHROW;
extern int omp_get_num_places (void) __GOMP_NOTHROW;
extern int omp_get_place_num_procs (int) __GOMP_NOTHROW;
extern void omp_get_place_proc_ids (int, int *) __GOMP_NOTHROW;
extern int omp_get_place_num (void) __GOMP_NOTHROW;
extern int omp_get_partition_num_places (void) __GOMP_NOTHROW;
extern void omp_get_partition_place_nums (int *) __GOMP_NOTHROW;
extern void omp_set_default_device (int) __GOMP_NOTHROW;
extern int omp_get_default_device (void) __GOMP_NOTHROW;
extern int omp_get_num_devices (void) __GOMP_NOTHROW;
extern int omp_get_num_teams (void) __GOMP_NOTHROW;
extern int omp_get_team_num (void) __GOMP_NOTHROW;
extern int omp_is_initial_device (void) __GOMP_NOTHROW;
extern int omp_get_initial_device (void) __GOMP_NOTHROW;
extern int omp_get_max_task_priority (void) __GOMP_NOTHROW;
extern void *omp_target_alloc (__SIZE_TYPE__, int) __GOMP_NOTHROW;
extern void omp_target_free (void *, int) __GOMP_NOTHROW;
extern int omp_target_is_present (const void *, int) __GOMP_NOTHROW;
extern int omp_target_memcpy (void *, const void *, __SIZE_TYPE__,
__SIZE_TYPE__, __SIZE_TYPE__, int, int)
__GOMP_NOTHROW;
extern int omp_target_memcpy_rect (void *, const void *, __SIZE_TYPE__, int,
const __SIZE_TYPE__ *,
const __SIZE_TYPE__ *,
const __SIZE_TYPE__ *,
const __SIZE_TYPE__ *,
const __SIZE_TYPE__ *, int, int)
__GOMP_NOTHROW;
extern int omp_target_associate_ptr (const void *, const void *, __SIZE_TYPE__,
__SIZE_TYPE__, int) __GOMP_NOTHROW;
extern int omp_target_disassociate_ptr (const void *, int) __GOMP_NOTHROW;
extern void omp_set_affinity_format (const char *) __GOMP_NOTHROW;
extern __SIZE_TYPE__ omp_get_affinity_format (char *, __SIZE_TYPE__)
__GOMP_NOTHROW;
extern void omp_display_affinity (const char *) __GOMP_NOTHROW;
extern __SIZE_TYPE__ omp_capture_affinity (char *, __SIZE_TYPE__, const char *)
__GOMP_NOTHROW;
extern int omp_pause_resource (omp_pause_resource_t, int) __GOMP_NOTHROW;
extern int omp_pause_resource_all (omp_pause_resource_t) __GOMP_NOTHROW;
extern omp_allocator_handle_t omp_init_allocator (omp_memspace_handle_t,
int,
const omp_alloctrait_t [])
__GOMP_NOTHROW;
extern void omp_destroy_allocator (omp_allocator_handle_t) __GOMP_NOTHROW;
extern void omp_set_default_allocator (omp_allocator_handle_t) __GOMP_NOTHROW;
extern omp_allocator_handle_t omp_get_default_allocator (void) __GOMP_NOTHROW;
extern void *omp_alloc (__SIZE_TYPE__,
omp_allocator_handle_t __GOMP_DEFAULT_NULL_ALLOCATOR)
__GOMP_NOTHROW;
extern void omp_free (void *,
omp_allocator_handle_t __GOMP_DEFAULT_NULL_ALLOCATOR)
__GOMP_NOTHROW;
#ifdef __cplusplus
}
#endif
#endif /* _OMP_H */
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