1 gslice.h |
1 /* GLIB sliced memory - fast threaded memory chunk allocator |
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2 * Copyright (C) 2005 Tim Janik |
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3 * Portions copyright (c) 2006 Nokia Corporation. All rights reserved. |
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4 * |
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5 * This library is free software; you can redistribute it and/or |
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6 * modify it under the terms of the GNU Lesser General Public |
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7 * License as published by the Free Software Foundation; either |
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8 * version 2 of the License, or (at your option) any later version. |
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9 * |
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10 * This library is distributed in the hope that it will be useful, |
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 * Lesser General Public License for more details. |
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14 * |
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15 * You should have received a copy of the GNU Lesser General Public |
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16 * License along with this library; if not, write to the |
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17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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18 * Boston, MA 02111-1307, USA. |
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19 */ |
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20 #ifndef __G_SLICE_H__ |
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21 #define __G_SLICE_H__ |
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22 |
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23 #ifndef __G_MEM_H__ |
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24 #error Include <glib.h> instead of <gslice.h> |
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25 #endif |
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26 |
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27 #include <glib/gtypes.h> |
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28 |
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29 G_BEGIN_DECLS |
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30 |
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31 /* slices - fast allocation/release of small memory blocks |
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32 */ |
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33 IMPORT_C gpointer g_slice_alloc (gsize block_size) G_GNUC_MALLOC; |
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34 IMPORT_C gpointer g_slice_alloc0 (gsize block_size) G_GNUC_MALLOC; |
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35 IMPORT_C void g_slice_free1 (gsize block_size, |
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36 gpointer mem_block); |
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37 IMPORT_C void g_slice_free_chain_with_offset (gsize block_size, |
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38 gpointer mem_chain, |
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39 gsize next_offset); |
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40 #define g_slice_new(type) ((type*) g_slice_alloc (sizeof (type))) |
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41 #define g_slice_new0(type) ((type*) g_slice_alloc0 (sizeof (type))) |
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42 /* g_slice_free (MemoryBlockType, |
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43 * MemoryBlockType *mem_block); |
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44 * g_slice_free_chain (MemoryBlockType, |
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45 * MemoryBlockType *first_chain_block, |
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46 * memory_block_next_field); |
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47 * pseudo prototypes for the macro |
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48 * definitions following below. |
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49 */ |
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50 |
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51 /* we go through extra hoops to ensure type safety */ |
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52 #define g_slice_free(type, mem) do { \ |
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53 if (1) g_slice_free1 (sizeof (type), (mem)); \ |
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54 else (void) ((type*) 0 == (mem)); \ |
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55 } while (0) |
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56 #define g_slice_free_chain(type, mem_chain, next) do { \ |
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57 if (1) g_slice_free_chain_with_offset (sizeof (type), \ |
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58 (mem_chain), G_STRUCT_OFFSET (type, next)); \ |
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59 else (void) ((type*) 0 == (mem_chain)); \ |
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60 } while (0) |
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61 |
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62 |
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63 /* --- internal debugging API --- */ |
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64 typedef enum { |
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65 G_SLICE_CONFIG_ALWAYS_MALLOC = 1, |
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66 G_SLICE_CONFIG_BYPASS_MAGAZINES, |
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67 G_SLICE_CONFIG_WORKING_SET_MSECS, |
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68 G_SLICE_CONFIG_COLOR_INCREMENT, |
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69 G_SLICE_CONFIG_CHUNK_SIZES, |
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70 G_SLICE_CONFIG_CONTENTION_COUNTER |
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71 } GSliceConfig; |
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72 void g_slice_set_config (GSliceConfig ckey, gint64 value); |
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73 gint64 g_slice_get_config (GSliceConfig ckey); |
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74 gint64* g_slice_get_config_state (GSliceConfig ckey, gint64 address, guint *n_values); |
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75 |
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76 G_END_DECLS |
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77 |
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78 #endif /* __G_SLICE_H__ */ |