libgupc/smp/upc_sysdep.h

   1 /* GNU UPC Runtime Operating System and Target Platform Dependent Support
   2    Copyright (C) 2003-2013 Free Software Foundation, Inc.
   3    Free Software Foundation, Inc.
   4    This file is part of the UPC runtime Library.
   5    Written by Gary Funck <gary@intrepid.com>
   6    and Nenad Vukicevic <nenad@intrepid.com>
   7
   8    This library is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This library is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this library; see the file COPYING.  If not, write to
  20    the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  21    MA 02111-1307, USA.
  22
  23    As a special exception, if you link this library with files
  24    compiled with a GNU compiler to produce an executable, this does
  25    not cause the resulting executable to be covered by the GNU General
  26    Public License.  This exception does not however invalidate any
  27    other reasons why the executable file might be covered by the GNU
  28    General Public License.  */
  29
  30 #ifndef _UPC_OS_H_
  31 #define _UPC_OS_H_
  32
  33
  34 /* An actual heap is required only for the SGI Irix
  35    based systems, because spin lock related data
  36    structures must live there.  The runtime doesn't
  37    otherwise need its own heap, so a null handle is
  38    passed around.  */
  39 #ifdef __sgi__
  40 typedef usptr_t os_heap_t;
  41 #else
  42 typedef void *os_heap_t;
  43 #endif
  44 typedef os_heap_t *os_heap_p;
  45
  46 #ifdef __sgi__
  47 typedef volatile ptrdiff_t os_atomic_t;
  48 #else
  49 typedef volatile int os_atomic_t;
  50 #endif
  51 typedef os_atomic_t *os_atomic_p;
  52
  53 #define OS_ATOMIC_WORD_SIZE (sizeof(os_atomic_t))
  54 #define OS_BITS_PER_ATOMIC_WORD (OS_ATOMIC_WORD_SIZE * 8)
  55
  56 #ifdef __sgi__
  57 typedef ulock_t os_lock_t;
  58 #else
  59 typedef os_atomic_t os_lock_t;
  60 #endif
  61 typedef os_lock_t *os_lock_p;
  62
  63 extern void __upc_sys_init (void);
  64
  65 extern int __upc_atomic_get_bit (os_atomic_p, int);
  66 extern void __upc_atomic_set_bit (os_atomic_p, int);
  67
  68 extern void __upc_init_lock (os_lock_p);
  69 extern void __upc_acquire_lock (os_lock_p);
  70 extern int __upc_try_acquire_lock (os_lock_p);
  71 extern void __upc_release_lock (os_lock_p);
  72
  73 extern os_heap_p __upc_create_runtime_heap (size_t, const char **);
  74 extern void *__upc_runtime_alloc (size_t, os_heap_p *, const char **);
  75 extern int __upc_create_temp_file (const char *tag, char *tmp_fname,
  76                                    const char **err_msg);
  77 extern int __upc_create_global_mem_file (char *tmp_fname, const char **err_msg);
  78 extern char *__upc_strsignal (int);
  79
  80 #endif /* !_UPC_OS_H_ */