1/* OpenACC Runtime - internal declarations
2
3   Copyright (C) 2013-2015 Free Software Foundation, Inc.
4
5   Contributed by Mentor Embedded.
6
7   This file is part of the GNU Offloading and Multi Processing Library
8   (libgomp).
9
10   Libgomp is free software; you can redistribute it and/or modify it
11   under the terms of the GNU General Public License as published by
12   the Free Software Foundation; either version 3, or (at your option)
13   any later version.
14
15   Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
16   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17   FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
18   more details.
19
20   Under Section 7 of GPL version 3, you are granted additional
21   permissions described in the GCC Runtime Library Exception, version
22   3.1, as published by the Free Software Foundation.
23
24   You should have received a copy of the GNU General Public License and
25   a copy of the GCC Runtime Library Exception along with this program;
26   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
27   <http://www.gnu.org/licenses/>.  */
28
29/* This file contains data types and function declarations that are not
30   part of the official OpenACC user interface.  There are declarations
31   in here that are part of the GNU OpenACC ABI, in that the compiler is
32   required to know about them and use them.
33
34   The convention is that the all caps prefix "GOACC" is used group items
35   that are part of the external ABI, and the lower case prefix "goacc"
36   is used group items that are completely private to the library.  */
37
38#ifndef OACC_INT_H
39#define OACC_INT_H 1
40
41#include "openacc.h"
42#include "config.h"
43#include <stddef.h>
44#include <stdbool.h>
45#include <stdarg.h>
46
47#ifdef HAVE_ATTRIBUTE_VISIBILITY
48# pragma GCC visibility push(hidden)
49#endif
50
51static inline enum acc_device_t
52acc_device_type (enum offload_target_type type)
53{
54  return (enum acc_device_t) type;
55}
56
57struct goacc_thread
58{
59  /* The base device for the current thread.  */
60  struct gomp_device_descr *base_dev;
61
62  /* The device for the current thread.  */
63  struct gomp_device_descr *dev;
64
65  struct gomp_device_descr *saved_bound_dev;
66
67  /* This is a linked list of data mapped by the "acc data" pragma, following
68     strictly push/pop semantics according to lexical scope.  */
69  struct target_mem_desc *mapped_data;
70
71  /* These structures form a list: this is the next thread in that list.  */
72  struct goacc_thread *next;
73
74  /* Target-specific data (used by plugin).  */
75  void *target_tls;
76};
77
78#if defined HAVE_TLS || defined USE_EMUTLS
79extern __thread struct goacc_thread *goacc_tls_data;
80static inline struct goacc_thread *
81goacc_thread (void)
82{
83  return goacc_tls_data;
84}
85#else
86extern pthread_key_t goacc_tls_key;
87static inline struct goacc_thread *
88goacc_thread (void)
89{
90  return pthread_getspecific (goacc_tls_key);
91}
92#endif
93
94void goacc_register (struct gomp_device_descr *) __GOACC_NOTHROW;
95void goacc_attach_host_thread_to_device (int);
96void goacc_runtime_initialize (void);
97void goacc_save_and_set_bind (acc_device_t);
98void goacc_restore_bind (void);
99void goacc_lazy_initialize (void);
100void goacc_host_init (void);
101
102#ifdef HAVE_ATTRIBUTE_VISIBILITY
103# pragma GCC visibility pop
104#endif
105
106#endif
107