mono/utils/lock-free-alloc.h

   1 /**
   2  * \file
   3  * Lock free allocator.
   4  *
   5  * (C) Copyright 2011 Novell, Inc
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining
   8  * a copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sublicense, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be
  16  * included in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  21  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  22  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 #ifndef __MONO_LOCKFREEALLOC_H__
  28 #define __MONO_LOCKFREEALLOC_H__
  29
  30 #include <glib.h>
  31 #include <mono/utils/lock-free-queue.h>
  32 #include <mono/utils/mono-mmap.h>
  33
  34 typedef struct {
  35         MonoLockFreeQueue partial;
  36         unsigned int slot_size;
  37         unsigned int block_size;
  38 } MonoLockFreeAllocSizeClass;
  39
  40 struct _MonoLockFreeAllocDescriptor;
  41
  42 typedef struct {
  43         struct _MonoLockFreeAllocDescriptor *active;
  44         MonoLockFreeAllocSizeClass *sc;
  45         MonoMemAccountType account_type;
  46 } MonoLockFreeAllocator;
  47
  48 #define LOCK_FREE_ALLOC_SB_MAX_SIZE                                     16384
  49 #define LOCK_FREE_ALLOC_SB_HEADER_SIZE                          (sizeof (gpointer))
  50 #define LOCK_FREE_ALLOC_SB_USABLE_SIZE(block_size)      ((block_size) - LOCK_FREE_ALLOC_SB_HEADER_SIZE)
  51
  52 MONO_API void mono_lock_free_allocator_init_size_class (MonoLockFreeAllocSizeClass *sc, unsigned int slot_size, unsigned int block_size);
  53 MONO_API void mono_lock_free_allocator_init_allocator (MonoLockFreeAllocator *heap, MonoLockFreeAllocSizeClass *sc, MonoMemAccountType account_type);
  54
  55 MONO_API gpointer mono_lock_free_alloc (MonoLockFreeAllocator *heap);
  56 MONO_API void mono_lock_free_free (gpointer ptr, size_t block_size);
  57
  58 MONO_API gboolean mono_lock_free_allocator_check_consistency (MonoLockFreeAllocator *heap);
  59
  60 #endif