-/* Copyright (C) 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
Contributed by Richard Henderson <rth@redhat.com>.
- This file is part of the GNU OpenMP Library (libgomp).
+ 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 Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
+ 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 Lesser General Public License for
+ FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
- You should have received a copy of the GNU Lesser General Public License
- along with libgomp; see the file COPYING.LIB. If not, write to the
- Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- MA 02110-1301, USA. */
+ 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.
-/* As a special exception, if you link this library with other files, some
- of which are compiled with GCC, to produce an executable, this library
- does not by itself cause the resulting executable to be covered by the
- GNU General Public License. This exception does not however invalidate
- any other reasons why the executable file might be covered by the GNU
- General Public License. */
+ 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/>. */
/* This file contains data types and function declarations that are not
- part of the official OpenMP user interface. There are declarations
- in here that are part of the GNU OpenMP ABI, in that the compiler is
- required to know about them and use them.
+ part of the official OpenACC or OpenMP user interfaces. There are
+ declarations in here that are part of the GNU Offloading and Multi
+ Processing ABI, in that the compiler is required to know about them
+ and use them.
The convention is that the all caps prefix "GOMP" is used group items
that are part of the external ABI, and the lower case prefix "gomp"
#ifndef LIBGOMP_H
#define LIBGOMP_H 1
+#ifndef _LIBGOMP_CHECKING_
+/* Define to 1 to perform internal sanity checks. */
+#define _LIBGOMP_CHECKING_ 0
+#endif
+
#include "config.h"
#include "gstdint.h"
+#include "libgomp-plugin.h"
+#ifdef HAVE_PTHREAD_H
#include <pthread.h>
+#endif
#include <stdbool.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+/* Needed for memset in priority_queue.c. */
+#if _LIBGOMP_CHECKING_
+# ifdef STRING_WITH_STRINGS
+# include <string.h>
+# include <strings.h>
+# else
+# ifdef HAVE_STRING_H
+# include <string.h>
+# else
+# ifdef HAVE_STRINGS_H
+# include <strings.h>
+# endif
+# endif
+# endif
+#endif
#ifdef HAVE_ATTRIBUTE_VISIBILITY
# pragma GCC visibility push(hidden)
#endif
+/* If we were a C++ library, we'd get this from <std/atomic>. */
+enum memmodel
+{
+ MEMMODEL_RELAXED = 0,
+ MEMMODEL_CONSUME = 1,
+ MEMMODEL_ACQUIRE = 2,
+ MEMMODEL_RELEASE = 3,
+ MEMMODEL_ACQ_REL = 4,
+ MEMMODEL_SEQ_CST = 5
+};
+
+/* alloc.c */
+
+extern void *gomp_malloc (size_t) __attribute__((malloc));
+extern void *gomp_malloc_cleared (size_t) __attribute__((malloc));
+extern void *gomp_realloc (void *, size_t);
+
+/* Avoid conflicting prototypes of alloca() in system headers by using
+ GCC's builtin alloca(). */
+#define gomp_alloca(x) __builtin_alloca(x)
+
+/* error.c */
+
+extern void gomp_vdebug (int, const char *, va_list);
+extern void gomp_debug (int, const char *, ...)
+ __attribute__ ((format (printf, 2, 3)));
+#define gomp_vdebug(KIND, FMT, VALIST) \
+ do { \
+ if (__builtin_expect (gomp_debug_var, 0)) \
+ (gomp_vdebug) ((KIND), (FMT), (VALIST)); \
+ } while (0)
+#define gomp_debug(KIND, ...) \
+ do { \
+ if (__builtin_expect (gomp_debug_var, 0)) \
+ (gomp_debug) ((KIND), __VA_ARGS__); \
+ } while (0)
+extern void gomp_verror (const char *, va_list);
+extern void gomp_error (const char *, ...)
+ __attribute__ ((format (printf, 1, 2)));
+extern void gomp_vfatal (const char *, va_list)
+ __attribute__ ((noreturn));
+extern void gomp_fatal (const char *, ...)
+ __attribute__ ((noreturn, format (printf, 1, 2)));
+
+struct gomp_task;
+struct gomp_taskgroup;
+struct htab;
+
+#include "priority_queue.h"
#include "sem.h"
#include "mutex.h"
#include "bar.h"
+#include "simple-bar.h"
#include "ptrlock.h"
GFS_AUTO
};
+struct gomp_doacross_work_share
+{
+ union {
+ /* chunk_size copy, as ws->chunk_size is multiplied by incr for
+ GFS_DYNAMIC. */
+ long chunk_size;
+ /* Likewise, but for ull implementation. */
+ unsigned long long chunk_size_ull;
+ /* For schedule(static,0) this is the number
+ of iterations assigned to the last thread, i.e. number of
+ iterations / number of threads. */
+ long q;
+ /* Likewise, but for ull implementation. */
+ unsigned long long q_ull;
+ };
+ /* Size of each array entry (padded to cache line size). */
+ unsigned long elt_sz;
+ /* Number of dimensions in sink vectors. */
+ unsigned int ncounts;
+ /* True if the iterations can be flattened. */
+ bool flattened;
+ /* Actual array (of elt_sz sized units), aligned to cache line size.
+ This is indexed by team_id for GFS_STATIC and outermost iteration
+ / chunk_size for other schedules. */
+ unsigned char *array;
+ /* These two are only used for schedule(static,0). */
+ /* This one is number of iterations % number of threads. */
+ long t;
+ union {
+ /* And this one is cached t * (q + 1). */
+ long boundary;
+ /* Likewise, but for the ull implementation. */
+ unsigned long long boundary_ull;
+ };
+ /* Array of shift counts for each dimension if they can be flattened. */
+ unsigned int shift_counts[];
+};
+
struct gomp_work_share
{
/* This member records the SCHEDULE clause to be used for this construct.
};
};
- /* This is a circular queue that details which threads will be allowed
- into the ordered region and in which order. When a thread allocates
- iterations on which it is going to work, it also registers itself at
- the end of the array. When a thread reaches the ordered region, it
- checks to see if it is the one at the head of the queue. If not, it
- blocks on its RELEASE semaphore. */
- unsigned *ordered_team_ids;
+ union {
+ /* This is a circular queue that details which threads will be allowed
+ into the ordered region and in which order. When a thread allocates
+ iterations on which it is going to work, it also registers itself at
+ the end of the array. When a thread reaches the ordered region, it
+ checks to see if it is the one at the head of the queue. If not, it
+ blocks on its RELEASE semaphore. */
+ unsigned *ordered_team_ids;
+
+ /* This is a pointer to DOACROSS work share data. */
+ struct gomp_doacross_work_share *doacross;
+ };
/* This is the number of threads that have registered themselves in
the circular queue ordered_team_ids. */
/* Active nesting level. Only active parallel regions are counted. */
unsigned active_level;
+ /* Place-partition-var, offset and length into gomp_places_list array. */
+ unsigned place_partition_off;
+ unsigned place_partition_len;
+
#ifdef HAVE_SYNC_BUILTINS
/* Number of single stmts encountered. */
unsigned long single_count;
unsigned long static_trip;
};
-/* These are the OpenMP 3.0 Internal Control Variables described in
+struct target_mem_desc;
+
+/* These are the OpenMP 4.0 Internal Control Variables described in
section 2.3.1. Those described as having one copy per task are
stored within the structure; those described as having one copy
for the whole program are (naturally) global variables. */
-
+
struct gomp_task_icv
{
unsigned long nthreads_var;
enum gomp_schedule_type run_sched_var;
- int run_sched_modifier;
+ int run_sched_chunk_size;
+ int default_device_var;
+ unsigned int thread_limit_var;
bool dyn_var;
bool nest_var;
+ char bind_var;
+ /* Internal ICV. */
+ struct target_mem_desc *target_data;
};
extern struct gomp_task_icv gomp_global_icv;
-extern unsigned long gomp_thread_limit_var;
-extern unsigned long gomp_remaining_threads_count;
#ifndef HAVE_SYNC_BUILTINS
-extern gomp_mutex_t gomp_remaining_threads_lock;
+extern gomp_mutex_t gomp_managed_threads_lock;
#endif
extern unsigned long gomp_max_active_levels_var;
+extern bool gomp_cancel_var;
+extern int gomp_max_task_priority_var;
extern unsigned long long gomp_spin_count_var, gomp_throttled_spin_count_var;
extern unsigned long gomp_available_cpus, gomp_managed_threads;
+extern unsigned long *gomp_nthreads_var_list, gomp_nthreads_var_list_len;
+extern char *gomp_bind_var_list;
+extern unsigned long gomp_bind_var_list_len;
+extern void **gomp_places_list;
+extern unsigned long gomp_places_list_len;
+extern unsigned int gomp_num_teams_var;
+extern int gomp_debug_var;
+extern int goacc_device_num;
+extern char *goacc_device_type;
enum gomp_task_kind
{
+ /* Implicit task. */
GOMP_TASK_IMPLICIT,
- GOMP_TASK_IFFALSE,
+ /* Undeferred task. */
+ GOMP_TASK_UNDEFERRED,
+ /* Task created by GOMP_task and waiting to be run. */
GOMP_TASK_WAITING,
- GOMP_TASK_TIED
+ /* Task currently executing or scheduled and about to execute. */
+ GOMP_TASK_TIED,
+ /* Used for target tasks that have vars mapped and async run started,
+ but not yet completed. Once that completes, they will be readded
+ into the queues as GOMP_TASK_WAITING in order to perform the var
+ unmapping. */
+ GOMP_TASK_ASYNC_RUNNING
+};
+
+struct gomp_task_depend_entry
+{
+ /* Address of dependency. */
+ void *addr;
+ struct gomp_task_depend_entry *next;
+ struct gomp_task_depend_entry *prev;
+ /* Task that provides the dependency in ADDR. */
+ struct gomp_task *task;
+ /* Depend entry is of type "IN". */
+ bool is_in;
+ bool redundant;
+ bool redundant_out;
+};
+
+struct gomp_dependers_vec
+{
+ size_t n_elem;
+ size_t allocated;
+ struct gomp_task *elem[];
+};
+
+/* Used when in GOMP_taskwait or in gomp_task_maybe_wait_for_dependencies. */
+
+struct gomp_taskwait
+{
+ bool in_taskwait;
+ bool in_depend_wait;
+ /* Number of tasks we are waiting for. */
+ size_t n_depend;
+ gomp_sem_t taskwait_sem;
};
/* This structure describes a "task" to be run by a thread. */
struct gomp_task
{
+ /* Parent of this task. */
struct gomp_task *parent;
- struct gomp_task *children;
- struct gomp_task *next_child;
- struct gomp_task *prev_child;
- struct gomp_task *next_queue;
- struct gomp_task *prev_queue;
+ /* Children of this task. */
+ struct priority_queue children_queue;
+ /* Taskgroup this task belongs in. */
+ struct gomp_taskgroup *taskgroup;
+ /* Tasks that depend on this task. */
+ struct gomp_dependers_vec *dependers;
+ struct htab *depend_hash;
+ struct gomp_taskwait *taskwait;
+ /* Number of items in DEPEND. */
+ size_t depend_count;
+ /* Number of tasks this task depends on. Once this counter reaches
+ 0, we have no unsatisfied dependencies, and this task can be put
+ into the various queues to be scheduled. */
+ size_t num_dependees;
+
+ /* Priority of this task. */
+ int priority;
+ /* The priority node for this task in each of the different queues.
+ We put this here to avoid allocating space for each priority
+ node. Then we play offsetof() games to convert between pnode[]
+ entries and the gomp_task in which they reside. */
+ struct priority_node pnode[3];
+
struct gomp_task_icv icv;
void (*fn) (void *);
void *fn_data;
enum gomp_task_kind kind;
- bool in_taskwait;
bool in_tied_task;
- gomp_sem_t taskwait_sem;
+ bool final_task;
+ bool copy_ctors_done;
+ /* Set for undeferred tasks with unsatisfied dependencies which
+ block further execution of their parent until the dependencies
+ are satisfied. */
+ bool parent_depends_on;
+ /* Dependencies provided and/or needed for this task. DEPEND_COUNT
+ is the number of items available. */
+ struct gomp_task_depend_entry depend[];
+};
+
+/* This structure describes a single #pragma omp taskgroup. */
+
+struct gomp_taskgroup
+{
+ struct gomp_taskgroup *prev;
+ /* Queue of tasks that belong in this taskgroup. */
+ struct priority_queue taskgroup_queue;
+ bool in_taskgroup_wait;
+ bool cancelled;
+ gomp_sem_t taskgroup_sem;
+ size_t num_children;
+};
+
+/* Various state of OpenMP async offloading tasks. */
+enum gomp_target_task_state
+{
+ GOMP_TARGET_TASK_DATA,
+ GOMP_TARGET_TASK_BEFORE_MAP,
+ GOMP_TARGET_TASK_FALLBACK,
+ GOMP_TARGET_TASK_READY_TO_RUN,
+ GOMP_TARGET_TASK_RUNNING,
+ GOMP_TARGET_TASK_FINISHED
+};
+
+/* This structure describes a target task. */
+
+struct gomp_target_task
+{
+ struct gomp_device_descr *devicep;
+ void (*fn) (void *);
+ size_t mapnum;
+ size_t *sizes;
+ unsigned short *kinds;
+ unsigned int flags;
+ enum gomp_target_task_state state;
+ struct target_mem_desc *tgt;
+ struct gomp_task *task;
+ struct gomp_team *team;
+ /* Device-specific target arguments. */
+ void **args;
+ void *hostaddrs[];
};
/* This structure describes a "team" of threads. These are the threads
of the threads in the team. */
gomp_sem_t **ordered_release;
+ /* List of work shares on which gomp_fini_work_share hasn't been
+ called yet. If the team hasn't been cancelled, this should be
+ equal to each thr->ts.work_share, but otherwise it can be a possibly
+ long list of workshares. */
+ struct gomp_work_share *work_shares_to_free;
+
/* List of gomp_work_share structs chained through next_free fields.
This is populated and taken off only by the first thread in the
team encountering a new work sharing construct, in a critical
struct gomp_work_share work_shares[8];
gomp_mutex_t task_lock;
- struct gomp_task *task_queue;
- int task_count;
- int task_running_count;
+ /* Scheduled tasks. */
+ struct priority_queue task_queue;
+ /* Number of all GOMP_TASK_{WAITING,TIED} tasks in the team. */
+ unsigned int task_count;
+ /* Number of GOMP_TASK_WAITING tasks currently waiting to be scheduled. */
+ unsigned int task_queued_count;
+ /* Number of GOMP_TASK_{WAITING,TIED} tasks currently running
+ directly in gomp_barrier_handle_tasks; tasks spawned
+ from e.g. GOMP_taskwait or GOMP_taskgroup_end don't count, even when
+ that is called from a task run from gomp_barrier_handle_tasks.
+ task_running_count should be always <= team->nthreads,
+ and if current task isn't in_tied_task, then it will be
+ even < team->nthreads. */
+ unsigned int task_running_count;
+ int work_share_cancelled;
+ int team_cancelled;
/* This array contains structures for implicit tasks. */
struct gomp_task implicit_task[];
/* This semaphore is used for ordered loops. */
gomp_sem_t release;
- /* user pthread thread pool */
+ /* Place this thread is bound to plus one, or zero if not bound
+ to any place. */
+ unsigned int place;
+
+ /* User pthread thread pool */
struct gomp_thread_pool *thread_pool;
};
struct gomp_thread **threads;
unsigned threads_size;
unsigned threads_used;
+ /* The last team is used for non-nested teams to delay their destruction to
+ make sure all the threads in the team move on to the pool's barrier before
+ the team's barrier is destroyed. */
struct gomp_team *last_team;
+ /* Number of threads running in this contention group. */
+ unsigned long threads_busy;
- /* This barrier holds and releases threads waiting in threads. */
- gomp_barrier_t threads_dock;
+ /* This barrier holds and releases threads waiting in thread pools. */
+ gomp_simple_barrier_t threads_dock;
+};
+
+enum gomp_cancel_kind
+{
+ GOMP_CANCEL_PARALLEL = 1,
+ GOMP_CANCEL_LOOP = 2,
+ GOMP_CANCEL_FOR = GOMP_CANCEL_LOOP,
+ GOMP_CANCEL_DO = GOMP_CANCEL_LOOP,
+ GOMP_CANCEL_SECTIONS = 4,
+ GOMP_CANCEL_TASKGROUP = 8
};
/* ... and here is that TLS data. */
-#ifdef HAVE_TLS
+#if defined __nvptx__
+extern struct gomp_thread *nvptx_thrs __attribute__((shared));
+static inline struct gomp_thread *gomp_thread (void)
+{
+ int tid;
+ asm ("mov.u32 %0, %%tid.y;" : "=r" (tid));
+ return nvptx_thrs + tid;
+}
+#elif defined HAVE_TLS || defined USE_EMUTLS
extern __thread struct gomp_thread gomp_tls_data;
static inline struct gomp_thread *gomp_thread (void)
{
return &gomp_global_icv;
}
+#ifdef LIBGOMP_USE_PTHREADS
/* The attributes to be used during thread creation. */
extern pthread_attr_t gomp_thread_attr;
-/* Other variables. */
-
-extern unsigned short *gomp_cpu_affinity;
-extern size_t gomp_cpu_affinity_len;
+extern pthread_key_t gomp_thread_destructor;
+#endif
/* Function prototypes. */
/* affinity.c */
extern void gomp_init_affinity (void);
-extern void gomp_init_thread_affinity (pthread_attr_t *);
-
-/* alloc.c */
-
-extern void *gomp_malloc (size_t) __attribute__((malloc));
-extern void *gomp_malloc_cleared (size_t) __attribute__((malloc));
-extern void *gomp_realloc (void *, size_t);
-
-/* Avoid conflicting prototypes of alloca() in system headers by using
- GCC's builtin alloca(). */
-#define gomp_alloca(x) __builtin_alloca(x)
-
-/* error.c */
-
-extern void gomp_error (const char *, ...)
- __attribute__((format (printf, 1, 2)));
-extern void gomp_fatal (const char *, ...)
- __attribute__((noreturn, format (printf, 1, 2)));
+#ifdef LIBGOMP_USE_PTHREADS
+extern void gomp_init_thread_affinity (pthread_attr_t *, unsigned int);
+#endif
+extern void **gomp_affinity_alloc (unsigned long, bool);
+extern void gomp_affinity_init_place (void *);
+extern bool gomp_affinity_add_cpus (void *, unsigned long, unsigned long,
+ long, bool);
+extern bool gomp_affinity_remove_cpu (void *, unsigned long);
+extern bool gomp_affinity_copy_place (void *, void *, long);
+extern bool gomp_affinity_same_place (void *, void *);
+extern bool gomp_affinity_finalize_place_list (bool);
+extern bool gomp_affinity_init_level (int, unsigned long, bool);
+extern void gomp_affinity_print_place (void *);
+extern void gomp_get_place_proc_ids_8 (int, int64_t *);
/* iter.c */
extern void gomp_ordered_static_init (void);
extern void gomp_ordered_static_next (void);
extern void gomp_ordered_sync (void);
+extern void gomp_doacross_init (unsigned, long *, long);
+extern void gomp_doacross_ull_init (unsigned, unsigned long long *,
+ unsigned long long);
/* parallel.c */
struct gomp_task_icv *);
extern void gomp_end_task (void);
extern void gomp_barrier_handle_tasks (gomp_barrier_state_t);
+extern void gomp_task_maybe_wait_for_dependencies (void **);
+extern bool gomp_create_target_task (struct gomp_device_descr *,
+ void (*) (void *), size_t, void **,
+ size_t *, unsigned short *, unsigned int,
+ void **, void **,
+ enum gomp_target_task_state);
static void inline
gomp_finish_task (struct gomp_task *task)
{
- gomp_sem_destroy (&task->taskwait_sem);
+ if (__builtin_expect (task->depend_hash != NULL, 0))
+ free (task->depend_hash);
}
/* team.c */
extern struct gomp_team *gomp_new_team (unsigned);
extern void gomp_team_start (void (*) (void *), void *, unsigned,
- struct gomp_team *);
+ unsigned, struct gomp_team *);
extern void gomp_team_end (void);
+extern void gomp_free_thread (void *);
+
+/* target.c */
+
+extern void gomp_init_targets_once (void);
+extern int gomp_get_num_devices (void);
+extern bool gomp_target_task_fn (void *);
+
+/* Splay tree definitions. */
+typedef struct splay_tree_node_s *splay_tree_node;
+typedef struct splay_tree_s *splay_tree;
+typedef struct splay_tree_key_s *splay_tree_key;
+
+struct target_var_desc {
+ /* Splay key. */
+ splay_tree_key key;
+ /* True if data should be copied from device to host at the end. */
+ bool copy_from;
+ /* True if data always should be copied from device to host at the end. */
+ bool always_copy_from;
+ /* Relative offset against key host_start. */
+ uintptr_t offset;
+ /* Actual length. */
+ uintptr_t length;
+};
+
+struct target_mem_desc {
+ /* Reference count. */
+ uintptr_t refcount;
+ /* All the splay nodes allocated together. */
+ splay_tree_node array;
+ /* Start of the target region. */
+ uintptr_t tgt_start;
+ /* End of the targer region. */
+ uintptr_t tgt_end;
+ /* Handle to free. */
+ void *to_free;
+ /* Previous target_mem_desc. */
+ struct target_mem_desc *prev;
+ /* Number of items in following list. */
+ size_t list_count;
+
+ /* Corresponding target device descriptor. */
+ struct gomp_device_descr *device_descr;
+
+ /* List of target items to remove (or decrease refcount)
+ at the end of region. */
+ struct target_var_desc list[];
+};
+
+/* Special value for refcount - infinity. */
+#define REFCOUNT_INFINITY (~(uintptr_t) 0)
+/* Special value for refcount - tgt_offset contains target address of the
+ artificial pointer to "omp declare target link" object. */
+#define REFCOUNT_LINK (~(uintptr_t) 1)
+
+struct splay_tree_key_s {
+ /* Address of the host object. */
+ uintptr_t host_start;
+ /* Address immediately after the host object. */
+ uintptr_t host_end;
+ /* Descriptor of the target memory. */
+ struct target_mem_desc *tgt;
+ /* Offset from tgt->tgt_start to the start of the target object. */
+ uintptr_t tgt_offset;
+ /* Reference count. */
+ uintptr_t refcount;
+ /* Pointer to the original mapping of "omp declare target link" object. */
+ splay_tree_key link_key;
+};
+
+/* The comparison function. */
+
+static inline int
+splay_compare (splay_tree_key x, splay_tree_key y)
+{
+ if (x->host_start == x->host_end
+ && y->host_start == y->host_end)
+ return 0;
+ if (x->host_end <= y->host_start)
+ return -1;
+ if (x->host_start >= y->host_end)
+ return 1;
+ return 0;
+}
+
+#include "splay-tree.h"
+
+typedef struct acc_dispatch_t
+{
+ /* This is a linked list of data mapped using the
+ acc_map_data/acc_unmap_data or "acc enter data"/"acc exit data" pragmas.
+ Unlike mapped_data in the goacc_thread struct, unmapping can
+ happen out-of-order with respect to mapping. */
+ /* This is guarded by the lock in the "outer" struct gomp_device_descr. */
+ struct target_mem_desc *data_environ;
+
+ /* Execute. */
+ __typeof (GOMP_OFFLOAD_openacc_exec) *exec_func;
+
+ /* Async cleanup callback registration. */
+ __typeof (GOMP_OFFLOAD_openacc_register_async_cleanup)
+ *register_async_cleanup_func;
+
+ /* Asynchronous routines. */
+ __typeof (GOMP_OFFLOAD_openacc_async_test) *async_test_func;
+ __typeof (GOMP_OFFLOAD_openacc_async_test_all) *async_test_all_func;
+ __typeof (GOMP_OFFLOAD_openacc_async_wait) *async_wait_func;
+ __typeof (GOMP_OFFLOAD_openacc_async_wait_async) *async_wait_async_func;
+ __typeof (GOMP_OFFLOAD_openacc_async_wait_all) *async_wait_all_func;
+ __typeof (GOMP_OFFLOAD_openacc_async_wait_all_async)
+ *async_wait_all_async_func;
+ __typeof (GOMP_OFFLOAD_openacc_async_set_async) *async_set_async_func;
+
+ /* Create/destroy TLS data. */
+ __typeof (GOMP_OFFLOAD_openacc_create_thread_data) *create_thread_data_func;
+ __typeof (GOMP_OFFLOAD_openacc_destroy_thread_data)
+ *destroy_thread_data_func;
+
+ /* NVIDIA target specific routines. */
+ struct {
+ __typeof (GOMP_OFFLOAD_openacc_cuda_get_current_device)
+ *get_current_device_func;
+ __typeof (GOMP_OFFLOAD_openacc_cuda_get_current_context)
+ *get_current_context_func;
+ __typeof (GOMP_OFFLOAD_openacc_cuda_get_stream) *get_stream_func;
+ __typeof (GOMP_OFFLOAD_openacc_cuda_set_stream) *set_stream_func;
+ } cuda;
+} acc_dispatch_t;
+
+/* Various state of the accelerator device. */
+enum gomp_device_state
+{
+ GOMP_DEVICE_UNINITIALIZED,
+ GOMP_DEVICE_INITIALIZED,
+ GOMP_DEVICE_FINALIZED
+};
+
+/* This structure describes accelerator device.
+ It contains name of the corresponding libgomp plugin, function handlers for
+ interaction with the device, ID-number of the device, and information about
+ mapped memory. */
+struct gomp_device_descr
+{
+ /* Immutable data, which is only set during initialization, and which is not
+ guarded by the lock. */
+
+ /* The name of the device. */
+ const char *name;
+
+ /* Capabilities of device (supports OpenACC, OpenMP). */
+ unsigned int capabilities;
+
+ /* This is the ID number of device among devices of the same type. */
+ int target_id;
+
+ /* This is the TYPE of device. */
+ enum offload_target_type type;
+
+ /* Function handlers. */
+ __typeof (GOMP_OFFLOAD_get_name) *get_name_func;
+ __typeof (GOMP_OFFLOAD_get_caps) *get_caps_func;
+ __typeof (GOMP_OFFLOAD_get_type) *get_type_func;
+ __typeof (GOMP_OFFLOAD_get_num_devices) *get_num_devices_func;
+ __typeof (GOMP_OFFLOAD_init_device) *init_device_func;
+ __typeof (GOMP_OFFLOAD_fini_device) *fini_device_func;
+ __typeof (GOMP_OFFLOAD_version) *version_func;
+ __typeof (GOMP_OFFLOAD_load_image) *load_image_func;
+ __typeof (GOMP_OFFLOAD_unload_image) *unload_image_func;
+ __typeof (GOMP_OFFLOAD_alloc) *alloc_func;
+ __typeof (GOMP_OFFLOAD_free) *free_func;
+ __typeof (GOMP_OFFLOAD_dev2host) *dev2host_func;
+ __typeof (GOMP_OFFLOAD_host2dev) *host2dev_func;
+ __typeof (GOMP_OFFLOAD_dev2dev) *dev2dev_func;
+ __typeof (GOMP_OFFLOAD_can_run) *can_run_func;
+ __typeof (GOMP_OFFLOAD_run) *run_func;
+ __typeof (GOMP_OFFLOAD_async_run) *async_run_func;
+
+ /* Splay tree containing information about mapped memory regions. */
+ struct splay_tree_s mem_map;
+
+ /* Mutex for the mutable data. */
+ gomp_mutex_t lock;
+
+ /* Current state of the device. OpenACC allows to move from INITIALIZED state
+ back to UNINITIALIZED state. OpenMP allows only to move from INITIALIZED
+ to FINALIZED state (at program shutdown). */
+ enum gomp_device_state state;
+
+ /* OpenACC-specific data and functions. */
+ /* This is mutable because of its mutable data_environ and target_data
+ members. */
+ acc_dispatch_t openacc;
+};
+
+/* Kind of the pragma, for which gomp_map_vars () is called. */
+enum gomp_map_vars_kind
+{
+ GOMP_MAP_VARS_OPENACC,
+ GOMP_MAP_VARS_TARGET,
+ GOMP_MAP_VARS_DATA,
+ GOMP_MAP_VARS_ENTER_DATA
+};
+
+extern void gomp_acc_insert_pointer (size_t, void **, size_t *, void *);
+extern void gomp_acc_remove_pointer (void *, bool, int, int);
+
+extern struct target_mem_desc *gomp_map_vars (struct gomp_device_descr *,
+ size_t, void **, void **,
+ size_t *, void *, bool,
+ enum gomp_map_vars_kind);
+extern void gomp_unmap_vars (struct target_mem_desc *, bool);
+extern void gomp_init_device (struct gomp_device_descr *);
+extern void gomp_free_memmap (struct splay_tree_s *);
+extern void gomp_unload_device (struct gomp_device_descr *);
/* work.c */
extern void gomp_fini_work_share (struct gomp_work_share *);
extern bool gomp_work_share_start (bool);
extern void gomp_work_share_end (void);
+extern bool gomp_work_share_end_cancel (void);
extern void gomp_work_share_end_nowait (void);
static inline void
#if !defined (HAVE_ATTRIBUTE_VISIBILITY) \
|| !defined (HAVE_ATTRIBUTE_ALIAS) \
|| !defined (HAVE_AS_SYMVER_DIRECTIVE) \
- || !defined (PIC)
+ || !defined (PIC) \
+ || !defined (HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT)
# undef LIBGOMP_GNU_SYMBOL_VERSIONING
#endif
#endif
#ifdef HAVE_ATTRIBUTE_ALIAS
+# define ialias_ulp ialias_str1(__USER_LABEL_PREFIX__)
+# define ialias_str1(x) ialias_str2(x)
+# define ialias_str2(x) #x
# define ialias(fn) \
extern __typeof (fn) gomp_ialias_##fn \
__attribute__ ((alias (#fn))) attribute_hidden;
+# define ialias_redirect(fn) \
+ extern __typeof (fn) fn __asm__ (ialias_ulp "gomp_ialias_" #fn) attribute_hidden;
+# define ialias_call(fn) gomp_ialias_ ## fn
#else
# define ialias(fn)
+# define ialias_redirect(fn)
+# define ialias_call(fn) fn
#endif
+/* Helper function for priority_node_to_task() and
+ task_to_priority_node().
+
+ Return the offset from a task to its priority_node entry. The
+ priority_node entry is has a type of TYPE. */
+
+static inline size_t
+priority_queue_offset (enum priority_queue_type type)
+{
+ return offsetof (struct gomp_task, pnode[(int) type]);
+}
+
+/* Return the task associated with a priority NODE of type TYPE. */
+
+static inline struct gomp_task *
+priority_node_to_task (enum priority_queue_type type,
+ struct priority_node *node)
+{
+ return (struct gomp_task *) ((char *) node - priority_queue_offset (type));
+}
+
+/* Return the priority node of type TYPE for a given TASK. */
+
+static inline struct priority_node *
+task_to_priority_node (enum priority_queue_type type,
+ struct gomp_task *task)
+{
+ return (struct priority_node *) ((char *) task
+ + priority_queue_offset (type));
+}
#endif /* LIBGOMP_H */