612 lines
18 KiB
C
612 lines
18 KiB
C
#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "Eina.h"
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#include "eina_private.h"
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#ifdef HAVE_VALGRIND
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# include <valgrind.h>
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# include <memcheck.h>
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#endif
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// ========================================================================= //
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#define ITEM_FILLPAT_MAX 0
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#define ITEM_TOTAL_MAX ( 256 * 1024)
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#define ITEM_MEM_MAX ( 32 * 1024 * 1024)
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#if __WORDSIZE == 32
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// 4kb blocks
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//# define ITEM_BLOCK_COUNT 340
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// 64k blocks
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# define ITEM_BLOCK_COUNT 5459
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// 256k blocks
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//# define ITEM_BLOCK_COUNT 21844
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#else // __WORDSIZE == 64
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// 4kb blocks
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//# define ITEM_BLOCK_COUNT 170
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// 64k blocks
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# define ITEM_BLOCK_COUNT 2730
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// 256k blocks
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//# define ITEM_BLOCK_COUNT 10922
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#endif
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// ========================================================================= //
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typedef struct _Eina_FreeQ_Item Eina_FreeQ_Item;
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typedef struct _Eina_FreeQ_Block Eina_FreeQ_Block;
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// ========================================================================= //
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// these items are highly compressable. here is a dump of F: ptr freefunc size
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// ...
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// F: 0xaaab0454dd00 0xffff8b83b628 0x10
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// F: 0xaaab0454bd00 0xffff8b83b648 0x20
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// F: 0xaaab0454dd10 0xffff8b83b628 0x10
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// F: 0xaaab0454bd20 0xffff8b83b648 0x20
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// F: 0xaaab0454dd20 0xffff8b83b628 0x10
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// F: 0xaaab0454bd40 0xffff8b83b648 0x20
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// F: 0xaaab0454dd30 0xffff8b83b628 0x10
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// F: 0xaaab0454bd60 0xffff8b83b648 0x20
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// F: 0xaaab0454bda0 0xffff8b83b648 0x20
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// F: 0xaaab0454bdc0 0xffff8b83b648 0x20
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// ...
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// F: 0xaaab049176d0 0xffff8b83b648 0x20
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// F: 0xaaab04917750 0xffff8b83b648 0x20
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// F: 0xaaab04917770 0xffff8b83b648 0x20
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// F: 0xaaab04917330 0xffff8b83b648 0x20
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// F: 0xaaab0481b3c0 0xffff8b83b628 0x10
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// F: 0xaaab049177f0 0xffff8b83b648 0x20
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// F: 0xaaab049259a0 0xffff8af1c638 0x38
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// F: 0xaaab049172d0 0xffff8b83b648 0x20
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// F: 0xaaab049172f0 0xffff8b83b648 0x20
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// F: 0xaaab04925c00 0xffff8af1c638 0x38
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// F: 0xaaab04925c40 0xffff8af1c638 0x38
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// F: 0xaaab0481b3b0 0xffff8b83b628 0x10
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// F: 0xaaab04917310 0xffff8b83b648 0x20
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// F: 0xaaab04925bc0 0xffff8af1c638 0x38
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// F: 0xaaab0491d240 0xffff8af1c638 0x40
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// F: 0xaaab0492b3a0 0xffff8af1c638 0x38
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// F: 0xaaab049225c0 0xffff8af1c638 (nil)
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// F: 0xaaab04917730 0xffff8b83b648 0x20
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// F: 0xaaab04917790 0xffff8b83b648 0x20
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// F: 0xaaab049177b0 0xffff8b83b648 0x20
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// F: 0xaaab0492b710 0xffff8af1c638 0x38
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// F: 0xaaab0492b750 0xffff8af1c638 0x38
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// F: 0xaaab0481b420 0xffff8b83b628 0x10
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// F: 0xaaab049177d0 0xffff8b83b648 0x20
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// F: 0xaaab0492b2d0 0xffff8af1c638 0x38
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// F: 0xaaab0481b410 0xffff8b83b628 0x10
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// F: 0xaaab04917710 0xffff8b83b648 0x20
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// F: 0xaaab0492b280 0xffff8af1c638 0x40
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// F: 0xaaab0481b430 0xffff8b83b628 0x10
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// F: 0xaaab04917810 0xffff8b83b648 0x20
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// F: 0xaaab0492b6d0 0xffff8af1c638 0x38
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// F: 0xaaab0491ca80 0xffff8af1c638 (nil)
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// F: 0xaaab0492b350 0xffff8af1c638 0x40
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// F: 0xaaab0490fef0 0xffff8af1c638 0x38
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// F: 0xaaab0481b320 0xffff8b83b628 0x10
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// F: 0xaaab04916ff0 0xffff8b83b648 0x20
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// F: 0xaaab0481b330 0xffff8b83b628 0x10
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// F: 0xaaab04917030 0xffff8b83b648 0x20
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// F: 0xaaab04920560 0xffff8af1c638 0x38
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// F: 0xaaab0481b350 0xffff8b83b628 0x10
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// F: 0xaaab049170f0 0xffff8b83b648 0x20
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// F: 0xaaab04917050 0xffff8b83b648 0x20
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// F: 0xaaab04920510 0xffff8af1c638 0x40
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// F: 0xaaab04920850 0xffff8af1c638 0x38
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// F: 0xaaab04917070 0xffff8b83b648 0x20
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// F: 0xaaab04920800 0xffff8af1c638 0x40
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// F: 0xaaab04920c30 0xffff8af1c638 0x38
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// F: 0xaaab04917090 0xffff8b83b648 0x20
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// F: 0xaaab04920be0 0xffff8af1c638 0x40
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// F: 0xaaab04920e60 0xffff8af1c638 0x38
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// F: 0xaaab04920e10 0xffff8af1c638 0x40
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// F: 0xaaab049212b0 0xffff8af1c638 0x38
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// F: 0xaaab0481b340 0xffff8b83b628 0x10
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// F: 0xaaab049170d0 0xffff8b83b648 0x20
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// F: 0xaaab04921260 0xffff8af1c638 0x40
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// F: 0xaaab0481b1f0 0xffff8b83b628 0x10
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// F: 0xaaab04875d50 0xffff8b83b648 0x20
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// F: 0xaaab0490fea0 0xffff8af1c638 0x40
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// F: 0xaaab049102e0 0xffff8af1c638 0x38
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// F: 0xaaab04917010 0xffff8b83b648 0x20
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// F: 0xaaab0490b4f0 0xffff8af1c638 (nil)
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// F: 0xaaab04910290 0xffff8af1c638 0x40
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// F: 0xaaab0481b460 0xffff8b83b628 0x10
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// F: 0xaaab049178b0 0xffff8b83b648 0x20
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// F: 0xaaab0481b450 0xffff8b83b628 0x10
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// F: 0xaaab04917870 0xffff8b83b648 0x20
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// F: 0xaaab0481b490 0xffff8b83b628 0x10
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// F: 0xaaab049e56f0 0xffff8b83b648 0x20
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// F: 0xaaab0481b4a0 0xffff8b83b628 0x10
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// F: 0xaaab049e5710 0xffff8b83b648 0x20
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// F: 0xaaab0481b4b0 0xffff8b83b628 0x10
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// F: 0xaaab049e5730 0xffff8b83b648 0x20
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// F: 0xaaab0481b4c0 0xffff8b83b628 0x10
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// F: 0xaaab049e5750 0xffff8b83b648 0x20
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// F: 0xaaab0481b4f0 0xffff8b83b628 0x10
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// F: 0xaaab049e57d0 0xffff8b83b648 0x20
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// F: 0xaaab049e5990 0xffff8b83b648 0x20
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// F: 0xaaab049e5770 0xffff8b83b648 0x20
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// F: 0xaaab0481b4d0 0xffff8b83b628 0x10
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// F: 0xaaab049e5790 0xffff8b83b648 0x20
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// F: 0xaaab049e5a50 0xffff8b83b648 0x20
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// F: 0xaaab049e57b0 0xffff8b83b648 0x20
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// ...
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// F: 0xaaab04d9f330 0xffff8b83b648 0x20
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// F: 0xaaab04b18920 0xffff8b83b628 0x10
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// F: 0xaaab04d9f350 0xffff8b83b648 0x20
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// F: 0xaaab04d4d000 0xffff8b83b648 0x20
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// F: 0xaaab04d9f370 0xffff8b83b648 0x20
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// F: 0xaaab04d9f390 0xffff8b83b648 0x20
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// F: 0xaaab04d9f3b0 0xffff8b83b648 0x20
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// F: 0xaaab04b18930 0xffff8b83b628 0x10
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// F: 0xaaab04d9f3d0 0xffff8b83b648 0x20
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// F: 0xaaab04d9f3f0 0xffff8b83b648 0x20
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// F: 0xaaab04d9f410 0xffff8b83b648 0x20
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// F: 0xaaab04d9f430 0xffff8b83b648 0x20
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// F: 0xaaab04b18940 0xffff8b83b628 0x10
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// F: 0xaaab04d9f450 0xffff8b83b648 0x20
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// F: 0xaaab04d4d020 0xffff8b83b648 0x20
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// F: 0xaaab04d9f470 0xffff8b83b648 0x20
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// F: 0xaaab04d9f490 0xffff8b83b648 0x20
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// F: 0xaaab04d9f4b0 0xffff8b83b648 0x20
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// F: 0xaaab04b18950 0xffff8b83b628 0x10
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// F: 0xaaab04d9f4d0 0xffff8b83b648 0x20
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// F: 0xaaab04d9f4f0 0xffff8b83b648 0x20
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// F: 0xaaab04d9f510 0xffff8b83b648 0x20
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// F: 0xaaab04d9f530 0xffff8b83b648 0x20
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// F: 0xaaab04b18960 0xffff8b83b628 0x10
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// F: 0xaaab04d9f550 0xffff8b83b648 0x20
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// F: 0xaaab04640ce0 0xffff8b83b628 0x10
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// F: 0xaaab04d9ee10 0xffff8b83b648 0x20
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// F: 0xaaab04577e50 0xffff8af1c638 (nil)
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// F: 0xaaab04571570 0xffff8af1c638 (nil)
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// F: 0xaaab04577ee0 0xffff8af1c638 0x40
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// F: 0xaaab0457af50 0xffff8af1c638 (nil)
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// F: 0xaaab04571590 0xffff8af1c638 (nil)
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// F: 0xaaab0457afe0 0xffff8af1c638 0x40
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// F: 0xaaab0457e0c0 0xffff8af1c638 (nil)
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// F: 0xaaab0457b360 0xffff8af1c638 (nil)
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// F: 0xaaab0457e150 0xffff8af1c638 0x40
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// F: 0xaaab04581860 0xffff8af1c638 (nil)
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// F: 0xaaab04581330 0xffff8af1c638 (nil)
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// F: 0xaaab045818f0 0xffff8af1c638 0x40
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// F: 0xaaab0490ed00 0xffff8af1c638 0xc0
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// F: 0xaaab0490f090 0xffff8af1c638 0xc0
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// F: 0xaaab04922760 0xffff8af1c638 0xc0
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// F: 0xaaab04922880 0xffff8af1c638 0xc0
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// F: 0xaaab04922a20 0xffff8af1c638 0xc0
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// F: 0xaaab0491cb80 0xffff8af1c638 0xc0
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// F: 0xaaab0492b8e0 0xffff8af1c638 0xc0
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// F: 0xaaab0492c4b0 0xffff8af1c638 0xc0
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// F: 0xaaab0492c5c0 0xffff8af1c638 0xc0
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// F: 0xaaab0492c750 0xffff8af1c638 0xc0
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// F: 0xaaab04926230 0xffff8af1c638 0xc0
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// F: 0xaaab04920d00 0xffff8af1c638 0xc0
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// F: 0xaaab04920aa0 0xffff8af1c638 0xc0
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// F: 0xaaab04a05280 0xffff8af1c638 0xc0
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// F: 0xaaab04a053d0 0xffff8af1c638 0xc0
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// F: 0xaaab04a05520 0xffff8af1c638 0xc0
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// F: 0xaaab049f3860 0xffff8af1c638 0xc0
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// F: 0xaaab049f3a30 0xffff8af1c638 0xc0
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// F: 0xaaab04a06e60 0xffff8af1c638 0xc0
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// F: 0xaaab04a25490 0xffff8af1c638 0xc0
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// F: 0xaaab04a55170 0xffff8af1c638 0xc0
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// F: 0xaaab04a55ca0 0xffff8af1c638 0xc0
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// ...
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// so in future maybe create delta compression. keep a "start value" in the
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// Eina_FreeQ_Block block for each to begin from (and update these as we
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// march blcok->start forward (or at least update them when we finish a run
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// of processing items at the end of the processing.
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//
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// we can store things as DELTAS from the preview value. ptr, func, size all
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// are ptr sized values so we can compress them with deltas and thus encode
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// them in variable runs of bytes depending on the size of the delta. e.g.
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// use LEB128 maybe or PrefixVariant.
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//
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// after some playng leb128 seems to be the best from simplicity (so fast
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// encode which matters and decode needs to be good too) and size. i saw
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// a reduction to 24% of the original data size this way based on the sample
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// data i collected like above. is it worth the extra cycles? don't know.
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//
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// when looking at the deltas i noticed that func and sie delats are very
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// often 0 for long runs. this means we can probably use RLE effectively
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// if we split this into 3 streams wahc delta compressed then RLE compressed
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// per stream. walking is more complex and filling the block means taking
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// a guess at pre-allocating offsets per stream so it may not fill the blocks
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// as affectively then. again - is it worth it? need to measure if RLE helps
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// a lot or not in keeping size down in addition to delta + leb128.
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struct _Eina_FreeQ_Item
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{
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void *ptr;
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void (*free_func) (void *ptr);
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size_t size;
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};
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struct _Eina_FreeQ_Block
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{
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int start;
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int end;
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Eina_FreeQ_Block *next;
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Eina_FreeQ_Item items[ITEM_BLOCK_COUNT];
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};
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struct _Eina_FreeQ
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{
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Eina_Lock lock; // recursive lock, unused for postponed queues (thread-local)
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int count; // number of item slots used
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int count_max; // maximum number of slots allowed to be used or -1
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size_t mem_max; // the maximum amount of memory allowed to be used
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size_t mem_total; // current total memory known about in the queue
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Eina_FreeQ_Block *blocks; // the list of blocks of free items
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Eina_FreeQ_Block *block_last; // the last block to append items to
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Eina_Bool bypass; // 0 if not to bypass, 1 if we should bypass
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Eina_Bool postponed; // 1 if postponed type of freeq (eg. temp strings)
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Eina_Bool unlocked; // 0 by default, 1 if thread-local (lock not used)
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};
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// ========================================================================= //
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static Eina_FreeQ *_eina_freeq_main = NULL;
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static int _eina_freeq_bypass = -1;
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static unsigned int _eina_freeq_fillpat_max = ITEM_FILLPAT_MAX;
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static unsigned char _eina_freeq_fillpat_val = 0x55;
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static unsigned char _eina_freeq_fillpat_freed_val = 0x77;
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static int _eina_freeq_total_max = ITEM_TOTAL_MAX;
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static size_t _eina_freeq_mem_max = ITEM_MEM_MAX;
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// debgging/tuning info to enable in future when gathering stats
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#if 0
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static int _max_seen = 0;
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# define FQMAX(fq) \
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if (fq == _eina_freeq_main) { \
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if (fq->count > _max_seen) { \
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_max_seen = fq->count; \
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printf("FQ max: %i\n", _max_seen); \
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} \
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}
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#else
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# define FQMAX(fq)
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#endif
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// ========================================================================= //
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#define LOCK_FQ(fq); do { \
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if (!fq->unlocked) eina_lock_take(&(fq->lock)); } while(0)
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#define UNLOCK_FQ(fq); do { \
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if (!fq->unlocked) eina_lock_release(&(fq->lock)); } while(0)
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// ========================================================================= //
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static inline void
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_eina_freeq_fill_do(void *ptr, size_t size)
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{
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if (ptr) memset(ptr, _eina_freeq_fillpat_val, size);
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}
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static inline void
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_eina_freeq_freed_fill_do(void *ptr, size_t size)
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{
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if (_eina_freeq_fillpat_freed_val == 0) return;
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if (ptr) memset(ptr, _eina_freeq_fillpat_freed_val, size);
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}
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static void
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_eina_freeq_fill_check(void *ptr, void (*free_func) (void *ptr), size_t size)
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{
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unsigned char *p0 = ptr, *p = p0, *pe = p + size;
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for (; p < pe; p++)
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{
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if (*p != _eina_freeq_fillpat_val) goto err;
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}
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return;
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err:
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EINA_LOG_ERR("Pointer %p size %lu freed by %p has fill error %x != %x @ %lu",
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p0, (unsigned long)size, free_func,
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(unsigned int)*p, (unsigned int)_eina_freeq_fillpat_val,
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(unsigned long)(p - p0));
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}
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static void
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_eina_freeq_free_do(void *ptr,
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void (*free_func) (void *ptr),
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size_t size)
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{
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if (EINA_LIKELY((size > 0) && (size < _eina_freeq_fillpat_max)))
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{
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_eina_freeq_fill_check(ptr, free_func, size);
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_eina_freeq_freed_fill_do(ptr, size);
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}
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free_func(ptr);
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return;
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}
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static Eina_Bool
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_eina_freeq_block_append(Eina_FreeQ *fq)
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{
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Eina_FreeQ_Block *fb = malloc(sizeof(Eina_FreeQ_Block));
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if (!fb) return EINA_FALSE;
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fb->start = 0;
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fb->end = 0;
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fb->next = NULL;
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if (!fq->blocks) fq->blocks = fb;
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else fq->block_last->next = fb;
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fq->block_last = fb;
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return EINA_TRUE;
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}
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static void
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_eina_freeq_process(Eina_FreeQ *fq)
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{
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Eina_FreeQ_Block *fb = fq->blocks;
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if (!fb) return;
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_eina_freeq_free_do(fb->items[fb->start].ptr,
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fb->items[fb->start].free_func,
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fb->items[fb->start].size);
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fq->mem_total -= fb->items[fb->start].size;
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fb->start++;
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fq->count--;
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if (fb->start == fb->end)
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{
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fq->blocks = fb->next;
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if (!fq->blocks) fq->block_last = NULL;
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free(fb);
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}
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}
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static void
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_eina_freeq_flush_nolock(Eina_FreeQ *fq)
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{
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if (fq->postponed) return;
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FQMAX(fq);
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while ((fq->count > fq->count_max) || (fq->mem_total > fq->mem_max))
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_eina_freeq_process(fq);
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}
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// ========================================================================= //
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static Eina_FreeQ *
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_eina_freeq_new_default(void)
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{
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Eina_FreeQ *fq;
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if (EINA_UNLIKELY(_eina_freeq_bypass == -1))
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{
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const char *s;
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int v;
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s = getenv("EINA_FREEQ_BYPASS");
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if (s)
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{
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v = atoi(s);
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if (v == 0) _eina_freeq_bypass = 0;
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else _eina_freeq_bypass = 1;
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}
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if (_eina_freeq_bypass == -1)
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{
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#ifdef HAVE_VALGRIND
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if (RUNNING_ON_VALGRIND) _eina_freeq_bypass = 1;
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else
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#endif
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_eina_freeq_bypass = 0;
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}
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s = getenv("EINA_FREEQ_FILL_MAX");
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if (s) _eina_freeq_fillpat_max = atoi(s);
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s = getenv("EINA_FREEQ_TOTAL_MAX");
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if (s) _eina_freeq_total_max = atoi(s);
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s = getenv("EINA_FREEQ_MEM_MAX");
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if (s) _eina_freeq_mem_max = atoi(s) * 1024;
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s = getenv("EINA_FREEQ_FILL");
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if (s) _eina_freeq_fillpat_val = atoi(s);
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s = getenv("EINA_FREEQ_FILL_FREED");
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if (s) _eina_freeq_fillpat_freed_val = atoi(s);
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}
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fq = calloc(1, sizeof(Eina_FreeQ));
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if (!fq) return NULL;
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eina_lock_recursive_new(&(fq->lock));
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fq->count_max = _eina_freeq_total_max;
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fq->mem_max = _eina_freeq_mem_max;
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fq->bypass = _eina_freeq_bypass;
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return fq;
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}
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static Eina_FreeQ *
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_eina_freeq_new_postponed(void)
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{
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Eina_FreeQ *fq;
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fq= calloc(1, sizeof(*fq));
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if (!fq) return NULL;
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fq->mem_max = 0;
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fq->count_max = -1;
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fq->postponed = EINA_TRUE;
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fq->unlocked = EINA_TRUE;
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return fq;
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}
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EAPI Eina_FreeQ *
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eina_freeq_new(Eina_FreeQ_Type type)
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{
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switch (type)
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{
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case EINA_FREEQ_DEFAULT:
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return _eina_freeq_new_default();
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case EINA_FREEQ_POSTPONED:
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return _eina_freeq_new_postponed();
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default:
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return NULL;
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}
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}
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EAPI void
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eina_freeq_free(Eina_FreeQ *fq)
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{
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if (!fq) return;
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if (fq == _eina_freeq_main) _eina_freeq_main = NULL;
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eina_freeq_clear(fq);
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if (!fq->unlocked) eina_lock_free(&(fq->lock));
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free(fq);
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}
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EAPI Eina_FreeQ_Type
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eina_freeq_type_get(Eina_FreeQ *fq)
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{
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if (fq && fq->postponed)
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return EINA_FREEQ_POSTPONED;
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return EINA_FREEQ_DEFAULT;
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}
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void
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eina_freeq_main_set(Eina_FreeQ *fq)
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{
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if (!fq) return;
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_eina_freeq_main = fq;
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}
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EAPI Eina_FreeQ *
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eina_freeq_main_get(void)
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{
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return _eina_freeq_main;
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}
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EAPI void
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eina_freeq_count_max_set(Eina_FreeQ *fq, int count)
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{
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if (!fq) return;
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if (fq->postponed) return;
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if (count < 0) count = -1;
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LOCK_FQ(fq);
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fq->bypass = 0;
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fq->count_max = count;
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_eina_freeq_flush_nolock(fq);
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UNLOCK_FQ(fq);
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}
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EAPI int
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eina_freeq_count_max_get(Eina_FreeQ *fq)
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{
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int count;
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if (!fq) return 0;
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LOCK_FQ(fq);
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if (fq->bypass) count = 0;
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else count = fq->count_max;
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UNLOCK_FQ(fq);
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return count;
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}
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EAPI void
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eina_freeq_mem_max_set(Eina_FreeQ *fq, size_t mem)
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{
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if (!fq) return;
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if (fq->postponed) return;
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LOCK_FQ(fq);
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fq->bypass = 0;
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fq->mem_max = mem;
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_eina_freeq_flush_nolock(fq);
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UNLOCK_FQ(fq);
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}
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EAPI size_t
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eina_freeq_mem_max_get(Eina_FreeQ *fq)
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{
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size_t mem;
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if (!fq) return 0;
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LOCK_FQ(fq);
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if (fq->bypass) mem = 0;
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else mem = fq->mem_max;
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UNLOCK_FQ(fq);
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return mem;
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}
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EAPI void
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eina_freeq_clear(Eina_FreeQ *fq)
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{
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if (!fq) return;
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LOCK_FQ(fq);
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FQMAX(fq);
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while (fq->count > 0) _eina_freeq_process(fq);
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UNLOCK_FQ(fq);
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}
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EAPI void
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eina_freeq_reduce(Eina_FreeQ *fq, int count)
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{
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if (!fq) return;
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LOCK_FQ(fq);
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FQMAX(fq);
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while ((fq->count > 0) && (count > 0))
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{
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_eina_freeq_process(fq);
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count--;
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}
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UNLOCK_FQ(fq);
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}
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EAPI Eina_Bool
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eina_freeq_ptr_pending(Eina_FreeQ *fq)
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{
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Eina_Bool pending;
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if (!fq) return EINA_FALSE;
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LOCK_FQ(fq);
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if (fq->blocks) pending = EINA_TRUE;
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else pending = EINA_FALSE;
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UNLOCK_FQ(fq);
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return pending;
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}
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EAPI void
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eina_freeq_ptr_add(Eina_FreeQ *fq,
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void *ptr,
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void (*free_func) (void *ptr),
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size_t size)
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{
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Eina_FreeQ_Block *fb;
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if (!ptr) return;
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if (!free_func) free_func = free;
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if ((((fq) && !fq->postponed) || (!fq)) &&
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(size < _eina_freeq_fillpat_max) && (size > 0))
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_eina_freeq_fill_do(ptr, size);
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if (!fq || fq->bypass)
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{
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_eina_freeq_free_do(ptr, free_func, size);
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return;
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}
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LOCK_FQ(fq);
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if ((!fq->block_last) || (fq->block_last->end == ITEM_BLOCK_COUNT))
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{
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if (!_eina_freeq_block_append(fq))
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{
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UNLOCK_FQ(fq);
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if (!fq->postponed)
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_eina_freeq_free_do(ptr, free_func, size);
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else
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EINA_LOG_ERR("Could not add a pointer to the free queue! This "
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"program will leak resources!");
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return;
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}
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}
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fb = fq->block_last;
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fb->items[fb->end].ptr = ptr;
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fb->items[fb->end].free_func = free_func;
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fb->items[fb->end].size = size;
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fb->end++;
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fq->count++;
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fq->mem_total += size;
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_eina_freeq_flush_nolock(fq);
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UNLOCK_FQ(fq);
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}
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