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backporting of xma

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hyung-hwan
2025-07-16 23:18:46 +09:00
parent 437205c3ea
commit 9afb8e3898
2 changed files with 272 additions and 181 deletions
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38
lib/moo-xma.h
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@ -1,6 +1,4 @@
/*
* $Id$
*
Copyright (c) 2014-2019 Chung, Hyung-Hwan. All rights reserved.
Redistribution and use in source and binary forms, with or without
@ -52,15 +50,15 @@
* moo_xma_t* xma;
* void* ptr1, * ptr2;
*
* // create a new memory allocator obtaining a 100K byte zone
* // create a new memory allocator obtaining a 100K byte zone
* // with the default memory allocator
* xma = moo_xma_open(MOO_NULL, 0, 100000L);
* xma = moo_xma_open(MOO_NULL, 0, 100000L);
*
* ptr1 = moo_xma_alloc(xma, 5000); // allocate a 5K block from the zone
* ptr2 = moo_xma_alloc(xma, 1000); // allocate a 1K block from the zone
* ptr1 = moo_xma_realloc(xma, ptr1, 6000); // resize the 5K block to 6K.
*
* moo_xma_dump (xma, dumper, MOO_NULL); // dump memory blocks
* moo_xma_dump (xma, dumper, MOO_NULL); // dump memory blocks
*
* // the following two lines are not actually needed as the allocator
* // is closed after them.
@ -74,9 +72,7 @@
*/
#include <moo-cmn.h>
#ifdef MOO_BUILD_DEBUG
# define MOO_XMA_ENABLE_STAT
#endif
#define MOO_XMA_ENABLE_STAT
/** @struct moo_xma_t
* The moo_xma_t type defines a simple memory allocator over a memory zone.
@ -90,7 +86,7 @@ typedef struct moo_xma_t moo_xma_t;
typedef struct moo_xma_fblk_t moo_xma_fblk_t;
typedef struct moo_xma_mblk_t moo_xma_mblk_t;
#define MOO_XMA_FIXED 32
#define MOO_XMA_FIXED (32)
#define MOO_XMA_SIZE_BITS ((MOO_SIZEOF_OOW_T*8)-1)
struct moo_xma_t
@ -102,19 +98,27 @@ struct moo_xma_t
int internal;
/** pointer array to free memory blocks */
moo_xma_fblk_t* xfree[MOO_XMA_FIXED + MOO_XMA_SIZE_BITS + 1];
moo_xma_fblk_t* xfree[MOO_XMA_FIXED + MOO_XMA_SIZE_BITS + 1];
/** pre-computed value for fast xfree index calculation */
moo_oow_t bdec;
#ifdef MOO_XMA_ENABLE_STAT
#if defined(MOO_XMA_ENABLE_STAT)
struct
{
moo_oow_t total;
moo_oow_t alloc;
moo_oow_t avail;
moo_oow_t nused;
moo_oow_t nfree;
moo_oow_t alloc; /* allocated size */
moo_oow_t avail; /* available size */
moo_oow_t nused; /* nubmer of used blocks */
moo_oow_t nfree; /* number of free blocks */
moo_oow_t alloc_hwmark; /* high watermark - highest total memory ever allocated */
moo_oow_t nallocops; /* number of alloc operations */
moo_oow_t nallocgoodops; /* number of successful alloc operations */
moo_oow_t nallocbadops; /* number of failed alloc operations */
moo_oow_t nreallocops; /* number of realloc operations */
moo_oow_t nreallocgoodops; /* number of good realloc operations */
moo_oow_t nreallocbadops; /* number of failed realloc operations - could fall back to normal alloc*/
moo_oow_t nfreeops; /* number of free operations */
} stat;
#endif
};
@ -150,7 +154,7 @@ MOO_EXPORT moo_xma_t* moo_xma_open (
/**
* The moo_xma_close() function destroys a memory allocator. It also frees
* the memory zone obtained, which invalidates the memory blocks within
* the memory zone obtained, which invalidates the memory blocks within
* the zone. Call this function to destroy a memory allocator created with
* moo_xma_open().
*/
@ -186,7 +190,7 @@ MOO_EXPORT int moo_xma_init (
);
/**
* The moo_xma_fini() function finalizes a memory allocator. Call this
* The moo_xma_fini() function finalizes a memory allocator. Call this
* function to finalize a memory allocator initialized with moo_xma_init().
*/
MOO_EXPORT void moo_xma_fini (