memory_atomic.h

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*****************************************************************************
   3  *
   4  *   Non-sleeping memory allocation
   5  *   This file is part of gmidimonitor
   6  *
   7  *   Copyright (C) 2006,2007,2008,2011 Nedko Arnaudov <nedko@arnaudov.name>
   8  *
   9  *   This program is free software; you can redistribute it and/or modify
  10  *   it under the terms of the GNU General Public License as published by
  11  *   the Free Software Foundation; version 2 of the License
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program; if not, write to the Free Software
  20  *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  21  *
  22  *****************************************************************************/
  23
  24 #ifndef MEMORY_ATOMIC_H__7B572547_304D_4597_8808_990BE4476CC3__INCLUDED
  25 #define MEMORY_ATOMIC_H__7B572547_304D_4597_8808_990BE4476CC3__INCLUDED
  26
  27 #ifdef __cplusplus
  28 extern "C" {
  29 #endif
  30 #if 0
  31 } /* Adjust editor indent */
  32 #endif
  33
  34 typedef void * rtsafe_memory_pool_handle;
  35
  36 /* will sleep */
  37 gboolean
  38 rtsafe_memory_pool_create(
  39   size_t data_size,             /* chunk size */
  40   size_t min_preallocated,      /* min chunks preallocated */
  41   size_t max_preallocated,      /* max chunks preallocated */
  42   rtsafe_memory_pool_handle * pool_ptr);
  43
  44 /* will sleep */
  45 void
  46 rtsafe_memory_pool_destroy(
  47   rtsafe_memory_pool_handle pool);
  48
  49 /* may sleep */
  50 void
  51 rtsafe_memory_pool_sleepy(
  52   rtsafe_memory_pool_handle pool);
  53
  54 /* will not sleep, returns NULL if no memory is available */
  55 void *
  56 rtsafe_memory_pool_allocate(
  57   rtsafe_memory_pool_handle pool);
  58
  59 /* may sleep, returns NULL if no memory is available */
  60 void *
  61 rtsafe_memory_pool_allocate(
  62   rtsafe_memory_pool_handle pool);
  63
  64 /* may sleep */
  65 void *
  66 rtsafe_memory_pool_allocate_sleepy(
  67   rtsafe_memory_pool_handle pool);
  68
  69 /* will not sleep */
  70 void
  71 rtsafe_memory_pool_deallocate(
  72   rtsafe_memory_pool_handle pool,
  73   void * data);
  74
  75 typedef void * rtsafe_memory_handle;
  76
  77 /* will sleep */
  78 gboolean
  79 rtsafe_memory_init(
  80   size_t max_size,
  81   size_t prealloc_min,
  82   size_t prealloc_max,
  83   rtsafe_memory_handle * handle_ptr);
  84
  85 /* will not sleep */
  86 void *
  87 rtsafe_memory_allocate(
  88   rtsafe_memory_handle handle_ptr,
  89   size_t size);
  90
  91 void
  92 rtsafe_memory_sleepy(
  93   rtsafe_memory_handle handle_ptr);
  94
  95 /* will not sleep */
  96 void
  97 rtsafe_memory_deallocate(
  98   void * data);
  99
 100 void
 101 rtsafe_memory_uninit(
 102   rtsafe_memory_handle handle_ptr);
 103
 104 #if 0
 105 { /* Adjust editor indent */
 106 #endif
 107 #ifdef __cplusplus
 108 } /* extern "C" */
 109 #endif
 110
 111 #endif /* #ifndef MEMORY_ATOMIC_H__7B572547_304D_4597_8808_990BE4476CC3__INCLUDED */