libgomp/oacc-int.h

   1 /* OpenACC Runtime - internal declarations
   2
   3    Copyright (C) 2013-2017 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
  51 static inline enum acc_device_t
  52 acc_device_type (enum offload_target_type type)
  53 {
  54   return (enum acc_device_t) type;
  55 }
  56
  57 struct 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
  79 extern __thread struct goacc_thread *goacc_tls_data;
  80 static inline struct goacc_thread *
  81 goacc_thread (void)
  82 {
  83   return goacc_tls_data;
  84 }
  85 #else
  86 extern pthread_key_t goacc_tls_key;
  87 static inline struct goacc_thread *
  88 goacc_thread (void)
  89 {
  90   return pthread_getspecific (goacc_tls_key);
  91 }
  92 #endif
  93
  94 void goacc_register (struct gomp_device_descr *) __GOACC_NOTHROW;
  95 void goacc_attach_host_thread_to_device (int);
  96 void goacc_runtime_initialize (void);
  97 void goacc_save_and_set_bind (acc_device_t);
  98 void goacc_restore_bind (void);
  99 void goacc_lazy_initialize (void);
 100 void goacc_host_init (void);
 101
 102 #ifdef HAVE_ATTRIBUTE_VISIBILITY
 103 # pragma GCC visibility pop
 104 #endif
 105
 106 #endif