libgomp/oacc-int.h

   1 /* OpenACC Runtime - internal declarations
   2
   3    Copyright (C) 2013-2014 Free Software Foundation, Inc.
   4
   5    Contributed by Mentor Embedded.
   6
   7    This file is part of the GNU OpenMP Library (libgomp).
   8
   9    Libgomp is free software; you can redistribute it and/or modify it
  10    under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3, or (at your option)
  12    any later version.
  13
  14    Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
  15    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  16    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17    more details.
  18
  19    Under Section 7 of GPL version 3, you are granted additional
  20    permissions described in the GCC Runtime Library Exception, version
  21    3.1, as published by the Free Software Foundation.
  22
  23    You should have received a copy of the GNU General Public License and
  24    a copy of the GCC Runtime Library Exception along with this program;
  25    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  26    <http://www.gnu.org/licenses/>.  */
  27
  28 /* This file contains data types and function declarations that are not
  29    part of the official OpenACC user interface.  There are declarations
  30    in here that are part of the GNU OpenACC ABI, in that the compiler is
  31    required to know about them and use them.
  32
  33    The convention is that the all caps prefix "GOACC" is used group items
  34    that are part of the external ABI, and the lower case prefix "goacc"
  35    is used group items that are completely private to the library.  */
  36
  37 #ifndef _OACC_INT_H
  38 #define _OACC_INT_H 1
  39
  40 #include "openacc.h"
  41 #include "config.h"
  42 #include <stddef.h>
  43 #include <stdbool.h>
  44 #include <stdarg.h>
  45
  46 #ifdef HAVE_ATTRIBUTE_VISIBILITY
  47 # pragma GCC visibility push(hidden)
  48 #endif
  49
  50 static inline enum acc_device_t
  51 acc_device_type (enum offload_target_type type)
  52 {
  53   return (enum acc_device_t) type;
  54 }
  55
  56 struct goacc_thread
  57 {
  58   /* The device for the current thread.  */
  59   struct gomp_device_descr *dev;
  60
  61   struct gomp_device_descr *saved_bound_dev;
  62
  63   /* This is a linked list of data mapped by the "acc data" pragma, following
  64      strictly push/pop semantics according to lexical scope.  */
  65   struct target_mem_desc *mapped_data;
  66
  67   /* These structures form a list: this is the next thread in that list.  */
  68   struct goacc_thread *next;
  69
  70   /* Target-specific data (used by plugin).  */
  71   void *target_tls;
  72 };
  73
  74 #if defined HAVE_TLS || defined USE_EMUTLS
  75 extern __thread struct goacc_thread *goacc_tls_data;
  76 static inline struct goacc_thread *
  77 goacc_thread (void)
  78 {
  79   return goacc_tls_data;
  80 }
  81 #else
  82 extern pthread_key_t goacc_tls_key;
  83 static inline struct goacc_thread *
  84 goacc_thread (void)
  85 {
  86   return pthread_getspecific (goacc_tls_key);
  87 }
  88 #endif
  89
  90 struct gomp_device_descr;
  91
  92 void ACC_register (struct gomp_device_descr const *) __GOACC_NOTHROW;
  93
  94 /* Current dispatcher.  */
  95 extern struct gomp_device_descr const *base_dev;
  96
  97 void ACC_runtime_initialize (void);
  98 void ACC_save_and_set_bind (acc_device_t);
  99 void ACC_restore_bind (void);
 100 void ACC_lazy_initialize (void);
 101
 102 #ifdef HAVE_ATTRIBUTE_VISIBILITY
 103 # pragma GCC visibility pop
 104 #endif
 105
 106 #endif /* _OACC_INT_H */