text: /*
     +----------------------------------------------------------------------+
     | Zend Engine                                                          |
     +----------------------------------------------------------------------+
     | Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) |
     +----------------------------------------------------------------------+
     | This source file is subject to version 2.00 of the Zend license,     |
     | that is bundled with this package in the file LICENSE, and is        |
     | available through the world-wide-web at the following url:           |
     | http://www.zend.com/license/2_00.txt.                                |
     | If you did not receive a copy of the Zend license and are unable to  |
     | obtain it through the world-wide-web, please send a note to          |
     | license@zend.com so we can mail you a copy immediately.              |
     +----------------------------------------------------------------------+
     | Authors: Andi Gutmans <andi@zend.com>                                |
     |          Zeev Suraski <zeev@zend.com>                                |
     |          Dmitry Stogov <dmitry@zend.com>                             |
     +----------------------------------------------------------------------+
  */
  
  /* $Id$ */
  
  /*
   * zend_alloc is designed to be a modern CPU cache friendly memory manager
   * for PHP. Most ideas are taken from jemalloc and tcmalloc implementations.
   *
   * All allocations are split into 3 categories:
   *
   * Huge  - the size is greater than CHUNK size (~2M by default), allocation is
   *         performed using mmap(). The result is aligned on 2M boundary.
   *
   * Large - a number of 4096K pages inside a CHUNK. Large blocks
   *         are always alligned on page boundary.
   *
   * Small - less than 3/4 of page size. Small sizes are rounded up to nearest
   *         greater predefined small size (there are 30 predefined sizes:
   *         8, 16, 24, 32, ... 3072). Small blocks are allocated from
   *         RUNs. Each RUN is allocated as a single or few following pages.
   *         Allocation inside RUNs implemented using linked list of free
   *         elements. The result is aligned to 8 bytes.
   *
   * zend_alloc allocates memory from OS by CHUNKs, these CHUNKs and huge memory
   * blocks are always aligned to CHUNK boundary. So it's very easy to determine
   * the CHUNK owning the certain pointer. Regular CHUNKs reserve a single
   * page at start for special purpose. It contains bitset of free pages,
   * few bitset for available runs of predefined small sizes, map of pages that
   * keeps information about usage of each page in this CHUNK, etc.
   *
   * zend_alloc provides familiar emalloc/efree/erealloc API, but in addition it
   * provides specialized and optimized routines to allocate blocks of predefined
   * sizes (e.g. emalloc_2(), emallc_4(), ..., emalloc_large(), etc)
   * The library uses C preprocessor tricks that substitute calls to emalloc()
   * with more specialized routines when the requested size is known.
   */
  
  #include "zend.h"
  #include "zend_alloc.h"
  #include "zend_globals.h"
  #include "zend_operators.h"
  #include "zend_multiply.h"
  
  #ifdef HAVE_SIGNAL_H
  # include <signal.h>
  #endif
  #ifdef HAVE_UNISTD_H
  # include <unistd.h>
  #endif
  
  #ifdef ZEND_WIN32
  # include <wincrypt.h>
  # include <process.h>
  #endif
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  #include <sys/types.h>
  #include <sys/stat.h>
  #if HAVE_LIMITS_H
  #include <limits.h>
  #endif
  #include <fcntl.h>
  #include <errno.h>
  
  #ifndef _WIN32
  # ifdef HAVE_MREMAP
  #  ifndef _GNU_SOURCE
  #   define _GNU_SOURCE
  #  endif
  #  ifndef __USE_GNU
  #   define __USE_GNU
  #  endif
  # endif
  # include <sys/mman.h>
  # ifndef MAP_ANON
  #  ifdef MAP_ANONYMOUS
  #   define MAP_ANON MAP_ANONYMOUS
  #  endif
  # endif
  # ifndef MREMAP_MAYMOVE
  #  define MREMAP_MAYMOVE 0
  # endif
  # ifndef MAP_FAILED
  #  define MAP_FAILED ((void*)-1)
  # endif
  # ifndef MAP_POPULATE
  #  define MAP_POPULATE 0
  #endif
  #endif
  
  #ifndef ZEND_MM_STAT
  # define ZEND_MM_STAT 1    /* track current and peak memory usage            */
  #endif
  #ifndef ZEND_MM_LIMIT
  # define ZEND_MM_LIMIT 1   /* support for user-defined memory limit          */
  #endif
  #ifndef ZEND_MM_CUSTOM
  # define ZEND_MM_CUSTOM 1  /* support for custom memory allocator            */
                             /* USE_ZEND_ALLOC=0 may switch to system malloc() */
  #endif
  #ifndef ZEND_MM_STORAGE
  # define ZEND_MM_STORAGE 1 /* support for custom memory storage              */
  #endif
  #ifndef ZEND_MM_ERROR
  # define ZEND_MM_ERROR 1   /* report system errors                           */
  #endif
  
  #ifndef ZEND_MM_CHECK
  # define ZEND_MM_CHECK(condition, message)  do { \
  		if (UNEXPECTED(!(condition))) { \
  			zend_mm_panic(message); \
  		} \
  	} while (0)
  #endif
  
  typedef uint32_t   zend_mm_page_info; /* 4-byte integer */
  typedef zend_ulong zend_mm_bitset;    /* 4-byte or 8-byte integer */
  
  #define ZEND_MM_ALIGNED_OFFSET(size, alignment) \
  	(((size_t)(size)) & ((alignment) - 1))
  #define ZEND_MM_ALIGNED_BASE(size, alignment) \
  	(((size_t)(size)) & ~((alignment) - 1))
  #define ZEND_MM_ALIGNED_SIZE_EX(size, alignment) \
  	(((size_t)(size) + ((alignment) - 1)) & ~((alignment) - 1))
  #define ZEND_MM_SIZE_TO_NUM(size, alignment) \
  	(((size_t)(size) + ((alignment) - 1)) / (alignment))
  
  #define ZEND_MM_BITSET_LEN		(sizeof(zend_mm_bitset) * 8)       /* 32 or 64 */
  #define ZEND_MM_PAGE_MAP_LEN	(ZEND_MM_PAGES / ZEND_MM_BITSET_LEN) /* 16 or 8 */
  
  typedef zend_mm_bitset zend_mm_page_map[ZEND_MM_PAGE_MAP_LEN];     /* 64B */
  
  #define ZEND_MM_IS_FRUN                  0x00000000
  #define ZEND_MM_IS_LRUN                  0x40000000
  #define ZEND_MM_IS_SRUN                  0x80000000
  
  #define ZEND_MM_LRUN_PAGES_MASK          0x000003ff
  #define ZEND_MM_LRUN_PAGES_OFFSET        0
  
  #define ZEND_MM_SRUN_BIN_NUM_MASK        0x0000001f
  #define ZEND_MM_SRUN_BIN_NUM_OFFSET      0
  
  #define ZEND_MM_LRUN_PAGES(info)         (((info) & ZEND_MM_LRUN_PAGES_MASK) >> ZEND_MM_LRUN_PAGES_OFFSET)
  #define ZEND_MM_SRUN_BIN_NUM(info)       (((info) & ZEND_MM_SRUN_BIN_NUM_MASK) >> ZEND_MM_SRUN_BIN_NUM_OFFSET)
  
  #define ZEND_MM_FRUN()                   ZEND_MM_IS_FRUN
  #define ZEND_MM_LRUN(count)              (ZEND_MM_IS_LRUN | ((count) << ZEND_MM_LRUN_PAGES_OFFSET))
  #define ZEND_MM_SRUN(bin_num)            (ZEND_MM_IS_SRUN | ((bin_num) << ZEND_MM_SRUN_BIN_NUM_OFFSET))
  
  #define ZEND_MM_BINS 30
  
  typedef struct  _zend_mm_page      zend_mm_page;
  typedef struct  _zend_mm_bin       zend_mm_bin;
  typedef struct  _zend_mm_free_slot zend_mm_free_slot;
  typedef struct  _zend_mm_chunk     zend_mm_chunk;
  typedef struct  _zend_mm_huge_list zend_mm_huge_list;
  
  #ifdef _WIN64
  # define PTR_FMT "0x%0.16I64x"
  #elif SIZEOF_LONG == 8
  # define PTR_FMT "0x%0.16lx"
  #else
  # define PTR_FMT "0x%0.8lx"
  #endif
  
  /*
   * Memory is retrived from OS by chunks of fixed size 2MB.
   * Inside chunk it's managed by pages of fixed size 4096B.
   * So each chunk consists from 512 pages.
   * The first page of each chunk is reseved for chunk header.
   * It contains service information about all pages.
   *
   * free_pages - current number of free pages in this chunk
   *
   * free_tail  - number of continuous free pages at the end of chunk
   *
   * free_map   - bitset (a bit for each page). The bit is set if the corresponding
   *              page is allocated. Allocator for "lage sizes" may easily find a
   *              free page (or a continuous number of pages) searching for zero
   *              bits.
   *
   * map        - contains service information for each page. (32-bits for each
   *              page).
   *    usage:
   *				(2 bits)
   * 				FRUN - free page,
   *              LRUN - first page of "large" allocation
   *              SRUN - first page of a bin used for "small" allocation
   *
   *    lrun_pages:
   *              (10 bits) number of allocated pages
   *
   *    srun_bin_num:
   *              (5 bits) bin number (e.g. 0 for sizes 0-2, 1 for 3-4,
   *               2 for 5-8, 3 for 9-16 etc) see zend_alloc_sizes.h
   */
  
  struct _zend_mm_heap {
  #if ZEND_MM_CUSTOM
  	int                use_custom_heap;
  #endif
  #if ZEND_MM_STORAGE
  	zend_mm_storage   *storage;
  #endif
  #if ZEND_MM_STAT
  	size_t             size;                    /* current memory usage */
  	size_t             peak;                    /* peak memory usage */
  #endif
  	zend_mm_free_slot *free_slot[ZEND_MM_BINS]; /* free lists for small sizes */
  #if ZEND_MM_STAT || ZEND_MM_LIMIT
  	size_t             real_size;               /* current size of allocated pages */
  #endif
  #if ZEND_MM_STAT
  	size_t             real_peak;               /* peak size of allocated pages */
  #endif
  #if ZEND_MM_LIMIT
  	size_t             limit;                   /* memory limit */
  	int                overflow;                /* memory overflow flag */
  #endif
  
  	zend_mm_huge_list *huge_list;               /* list of huge allocated blocks */
  
  	zend_mm_chunk     *main_chunk;
  	zend_mm_chunk     *cached_chunks;			/* list of unused chunks */
  	int                chunks_count;			/* number of alocated chunks */
  	int                peak_chunks_count;		/* peak number of allocated chunks for current request */
  	int                cached_chunks_count;		/* number of cached chunks */
  	double             avg_chunks_count;		/* average number of chunks allocated per request */
  #if ZEND_MM_CUSTOM
  	void              *(*_malloc)(size_t);
  	void               (*_free)(void*);
  	void              *(*_realloc)(void*, size_t);
  #endif
  };
  
  struct _zend_mm_chunk {
  	zend_mm_heap      *heap;
  	zend_mm_chunk     *next;
  	zend_mm_chunk     *prev;
  	int                free_pages;				/* number of free pages */
  	int                free_tail;               /* number of free pages at the end of chunk */
  	int                num;
  	char               reserve[64 - (sizeof(void*) * 3 + sizeof(int) * 3)];
  	zend_mm_heap       heap_slot;               /* used only in main chunk */
  	zend_mm_page_map   free_map;                /* 512 bits or 64 bytes */
  	zend_mm_page_info  map[ZEND_MM_PAGES];      /* 2 KB = 512 * 4 */
  };
  
  struct _zend_mm_page {
  	char               bytes[ZEND_MM_PAGE_SIZE];
  };
  
  /*
   * bin - is one or few continuous pages (up to 8) used for alocation of
   * a particular "small size".
   */
  struct _zend_mm_bin {
  	char               bytes[ZEND_MM_PAGE_SIZE * 8];
  };
  
  #if ZEND_DEBUG
  typedef struct _zend_mm_debug_info {
  	size_t             size;
  	const char        *filename;
  	const char        *orig_filename;
  	uint               lineno;
  	uint               orig_lineno;
  } zend_mm_debug_info;
  #endif
  
  struct _zend_mm_free_slot {
  	zend_mm_free_slot *next_free_slot;
  };
  
  struct _zend_mm_huge_list {
  	void              *ptr;
  	size_t             size;
  	zend_mm_huge_list *next;
  #if ZEND_DEBUG
  	zend_mm_debug_info dbg;
  #endif
  };
  
  #define ZEND_MM_PAGE_ADDR(chunk, page_num) \
  	((void*)(((zend_mm_page*)(chunk)) + (page_num)))
  
  #define _BIN_DATA_SIZE(num, size, elements, pages, x, y) size,
  static const unsigned int bin_data_size[] = {
    ZEND_MM_BINS_INFO(_BIN_DATA_SIZE, x, y)
  };
  
  #define _BIN_DATA_ELEMENTS(num, size, elements, pages, x, y) elements,
  static const int bin_elements[] = {
    ZEND_MM_BINS_INFO(_BIN_DATA_ELEMENTS, x, y)
  };
  
  #define _BIN_DATA_PAGES(num, size, elements, pages, x, y) pages,
  static const int bin_pages[] = {
    ZEND_MM_BINS_INFO(_BIN_DATA_PAGES, x, y)
  };
  
  #if ZEND_DEBUG
  void zend_debug_alloc_output(char *format, ...)
  {
  	char output_buf[256];
  	va_list args;
  
  	va_start(args, format);
  	vsprintf(output_buf, format, args);
  	va_end(args);
  
  #ifdef ZEND_WIN32
  	OutputDebugString(output_buf);
  #else
  	fprintf(stderr, "%s", output_buf);
  #endif
  }
  #endif
  
  static ZEND_NORETURN void zend_mm_panic(const char *message)
  {
  	fprintf(stderr, "%s\n", message);
  /* See http://support.microsoft.com/kb/190351 */
  #ifdef PHP_WIN32
  	fflush(stderr);
  #endif
  #if ZEND_DEBUG && defined(HAVE_KILL) && defined(HAVE_GETPID)
  	kill(getpid(), SIGSEGV);
  #endif
  	exit(1);
  }
  
  static ZEND_NORETURN void zend_mm_safe_error(zend_mm_heap *heap,
  	const char *format,
  	size_t limit,
  #if ZEND_DEBUG
  	const char *filename,
  	uint lineno,
  #endif
  	size_t size)
  {
  	TSRMLS_FETCH();
  
  	heap->overflow = 1;
  	zend_try {
  		zend_error_noreturn(E_ERROR,
  			format,
  			limit,
  #if ZEND_DEBUG
  			filename,
  			lineno,
  #endif
  			size);
  	} zend_catch {
  	}  zend_end_try();
  	heap->overflow = 0;
  	zend_bailout();
  	exit(1);
  }
  
  #ifdef _WIN32
  void
  stderr_last_error(char *msg)
  {
  	LPSTR buf = NULL;
  	DWORD err = GetLastError();
  
  	if (!FormatMessage(
  			FORMAT_MESSAGE_ALLOCATE_BUFFER |
  			FORMAT_MESSAGE_FROM_SYSTEM |
  			FORMAT_MESSAGE_IGNORE_INSERTS,
  			NULL,
  			err,
  			MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
  			(LPSTR)&buf,
  		0, NULL)) {
  		fprintf(stderr, "\n%s: [0x%08x]\n", msg, err);
  	}
  	else {
  		fprintf(stderr, "\n%s: [0x%08x] %s\n", msg, err, buf);
  	}
  }
  #endif
  
  /*****************/
  /* OS Allocation */
  /*****************/
  
  static void *zend_mm_mmap_fixed(void *addr, size_t size)
  {
  #ifdef _WIN32
  	return VirtualAlloc(addr, size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
  #else
  	/* MAP_FIXED leads to discarding of the old mapping, so it can't be used. */
  	void *ptr = mmap(addr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON /*| MAP_POPULATE | MAP_HUGETLB*/, -1, 0);
  
  	if (ptr == MAP_FAILED) {
  #if ZEND_MM_ERROR
  		fprintf(stderr, "\nmmap() failed: [%d] %s\n", errno, strerror(errno));
  #endif
  		return NULL;
  	} else if (ptr != addr) {
  		if (munmap(ptr, size) != 0) {
  #if ZEND_MM_ERROR
  			fprintf(stderr, "\nmunmap() failed: [%d] %s\n", errno, strerror(errno));
  #endif
  		}
  		return NULL;
  	}
  	return ptr;
  #endif
  }
  
  static void *zend_mm_mmap(size_t size)
  {
  #ifdef _WIN32
  	void *ptr = VirtualAlloc(NULL, size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
  
  	if (ptr == NULL) {
  #if ZEND_MM_ERROR
  		stderr_last_error("VirtualAlloc() failed");
  #endif
  		return NULL;
  	}
  	return ptr;
  #else
  	void *ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON /*| MAP_POPULATE | MAP_HUGETLB*/, -1, 0);
  
  	if (ptr == MAP_FAILED) {
  #if ZEND_MM_ERROR
  		fprintf(stderr, "\nmmap() failed: [%d] %s\n", errno, strerror(errno));
  #endif
  		return NULL;
  	}
  	return ptr;
  #endif
  }
  
  static void zend_mm_munmap(void *addr, size_t size)
  {
  #ifdef _WIN32
  	if (VirtualFree(addr, 0, MEM_RELEASE) == 0) {
  #if ZEND_MM_ERROR
  		stderr_last_error("VirtualFree() failed");
  #endif
  	}
  #else
  	if (munmap(addr, size) != 0) {
  #if ZEND_MM_ERROR
  		fprintf(stderr, "\nmunmap() failed: [%d] %s\n", errno, strerror(errno));
  #endif
  	}
  #endif
  }
  
  /***********/
  /* Bitmask */
  /***********/
  
  /* number of trailing set (1) bits */
  static zend_always_inline int zend_mm_bitset_nts(zend_mm_bitset bitset)
  {
  #if defined(__GNUC__)
  # if SIZEOF_ZEND_LONG == SIZEOF_LONG
  	return __builtin_ctzl(~bitset);
  # else
  	return __builtin_ctzll(~bitset);
  # endif
  #elif defined(_WIN32)
  	unsigned long index;
  
  #if defined(_WIN64)
  	if (!BitScanForward64(&index, ~bitset)) {
  #else
  	if (!BitScanForward(&index, ~bitset)) {
  #endif
  		/* undefined behavior */
  		return 32;
  	}
  
  	return (int)index;
  #else
  	int n;
  
  	if (bitset == (zend_mm_bitset)-1) return ZEND_MM_BITSET_LEN;
  
  	n = 0;
  #if SIZEOF_ZEND_LONG == 8
  	if (sizeof(zend_mm_bitset) == 8) {
  		if ((bitset & 0xffffffff) == 0xffffffff) {n += 32; bitset = bitset >> Z_UL(32);}
  	}
  #endif
  	if ((bitset & 0x0000ffff) == 0x0000ffff) {n += 16; bitset = bitset >> 16;}
  	if ((bitset & 0x000000ff) == 0x000000ff) {n +=  8; bitset = bitset >>  8;}
  	if ((bitset & 0x0000000f) == 0x0000000f) {n +=  4; bitset = bitset >>  4;}
  	if ((bitset & 0x00000003) == 0x00000003) {n +=  2; bitset = bitset >>  2;}
  	return n + (bitset & 1);
  #endif
  }
  
  /* number of trailing zero bits (0x01 -> 1; 0x40 -> 6; 0x00 -> LEN) */
  static zend_always_inline int zend_mm_bitset_ntz(zend_mm_bitset bitset)
  {
  #if defined(__GNUC__)
  # if SIZEOF_ZEND_LONG == SIZEOF_LONG
  	return __builtin_ctzl(bitset);
  # else
  	return __builtin_ctzll(bitset);
  # endif
  #elif defined(_WIN32)
  	unsigned long index;
  
  #if defined(_WIN64)
  	if (!BitScanForward64(&index, bitset)) {
  #else
  	if (!BitScanForward(&index, bitset)) {
  #endif
  		/* undefined behavior */
  		return 32;
  	}
  
  	return (int)index;
  #else
  	int n;
  
  	if (bitset == (zend_mm_bitset)0) return ZEND_MM_BITSET_LEN;
  
  	n = 1;
  #if SIZEOF_ZEND_LONG == 8
  	if (sizeof(zend_mm_bitset) == 8) {
  		if ((bitset & 0xffffffff) == 0) {n += 32; bitset = bitset >> Z_UL(32);}
  	}
  #endif
  	if ((bitset & 0x0000ffff) == 0) {n += 16; bitset = bitset >> 16;}
  	if ((bitset & 0x000000ff) == 0) {n +=  8; bitset = bitset >>  8;}
  	if ((bitset & 0x0000000f) == 0) {n +=  4; bitset = bitset >>  4;}
  	if ((bitset & 0x00000003) == 0) {n +=  2; bitset = bitset >>  2;}
  	return n - (bitset & 1);
  #endif
  }
  
  static zend_always_inline int zend_mm_bitset_find_zero(zend_mm_bitset *bitset, int size)
  {
  	int i = 0;
  
  	do {
  		zend_mm_bitset tmp = bitset[i];
  		if (tmp != (zend_mm_bitset)-1) {
  			return i * ZEND_MM_BITSET_LEN + zend_mm_bitset_nts(tmp);
  		}
  		i++;
  	} while (i < size);
  	return -1;
  }
  
  static zend_always_inline int zend_mm_bitset_find_one(zend_mm_bitset *bitset, int size)
  {
  	int i = 0;
  
  	do {
  		zend_mm_bitset tmp = bitset[i];
  		if (tmp != 0) {
  			return i * ZEND_MM_BITSET_LEN + zend_mm_bitset_ntz(tmp);
  		}
  		i++;
  	} while (i < size);
  	return -1;
  }
  
  static zend_always_inline int zend_mm_bitset_find_zero_and_set(zend_mm_bitset *bitset, int size)
  {
  	int i = 0;
  
  	do {
  		zend_mm_bitset tmp = bitset[i];
  		if (tmp != (zend_mm_bitset)-1) {
  			int n = zend_mm_bitset_nts(tmp);
  			bitset[i] |= Z_UL(1) << n;
  			return i * ZEND_MM_BITSET_LEN + n;
  		}
  		i++;
  	} while (i < size);
  	return -1;
  }
  
  static zend_always_inline int zend_mm_bitset_is_set(zend_mm_bitset *bitset, int bit)
  {
  	return (bitset[bit / ZEND_MM_BITSET_LEN] & (Z_L(1) << (bit & (ZEND_MM_BITSET_LEN-1)))) != 0;
  }
  
  static zend_always_inline void zend_mm_bitset_set_bit(zend_mm_bitset *bitset, int bit)
  {
  	bitset[bit / ZEND_MM_BITSET_LEN] |= (Z_L(1) << (bit & (ZEND_MM_BITSET_LEN-1)));
  }
  
  static zend_always_inline void zend_mm_bitset_reset_bit(zend_mm_bitset *bitset, int bit)
  {
  	bitset[bit / ZEND_MM_BITSET_LEN] &= ~(Z_L(1) << (bit & (ZEND_MM_BITSET_LEN-1)));
  }
  
  static zend_always_inline void zend_mm_bitset_set_range(zend_mm_bitset *bitset, int start, int len)
  {
  	if (len == 1) {
  		zend_mm_bitset_set_bit(bitset, start);
  	} else {
  		int pos = start / ZEND_MM_BITSET_LEN;
  		int end = (start + len - 1) / ZEND_MM_BITSET_LEN;
  		int bit = start & (ZEND_MM_BITSET_LEN - 1);
  		zend_mm_bitset tmp;
  
  		if (pos != end) {
  			/* set bits from "bit" to ZEND_MM_BITSET_LEN-1 */
  			tmp = (zend_mm_bitset)-1 << bit;
  			bitset[pos++] |= tmp;
  			while (pos != end) {
  				/* set all bits */
  				bitset[pos++] = (zend_mm_bitset)-1;
  			}
  			end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
  			/* set bits from "0" to "end" */
  			tmp = (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
  			bitset[pos] |= tmp;
  		} else {
  			end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
  			/* set bits from "bit" to "end" */
  			tmp = (zend_mm_bitset)-1 << bit;
  			tmp &= (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
  			bitset[pos] |= tmp;
  		}
  	}
  }
  
  static zend_always_inline void zend_mm_bitset_reset_range(zend_mm_bitset *bitset, int start, int len)
  {
  	if (len == 1) {
  		zend_mm_bitset_reset_bit(bitset, start);
  	} else {
  		int pos = start / ZEND_MM_BITSET_LEN;
  		int end = (start + len - 1) / ZEND_MM_BITSET_LEN;
  		int bit = start & (ZEND_MM_BITSET_LEN - 1);
  		zend_mm_bitset tmp;
  
  		if (pos != end) {
  			/* reset bits from "bit" to ZEND_MM_BITSET_LEN-1 */
  			tmp = ~((Z_L(1) << bit) - 1);
  			bitset[pos++] &= ~tmp;
  			while (pos != end) {
  				/* set all bits */
  				bitset[pos++] = 0;
  			}
  			end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
  			/* reset bits from "0" to "end" */
  			tmp = (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
  			bitset[pos] &= ~tmp;
  		} else {
  			end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
  			/* reset bits from "bit" to "end" */
  			tmp = (zend_mm_bitset)-1 << bit;
  			tmp &= (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
  			bitset[pos] &= ~tmp;
  		}
  	}
  }
  
  static zend_always_inline int zend_mm_bitset_is_free_range(zend_mm_bitset *bitset, int start, int len)
  {
  	if (len == 1) {
  		return !zend_mm_bitset_is_set(bitset, start);
  	} else {
  		int pos = start / ZEND_MM_BITSET_LEN;
  		int end = (start + len - 1) / ZEND_MM_BITSET_LEN;
  		int bit = start & (ZEND_MM_BITSET_LEN - 1);
  		zend_mm_bitset tmp;
  
  		if (pos != end) {
  			/* set bits from "bit" to ZEND_MM_BITSET_LEN-1 */
  			tmp = (zend_mm_bitset)-1 << bit;
  			if ((bitset[pos++] & tmp) != 0) {
  				return 0;
  			}
  			while (pos != end) {
  				/* set all bits */
  				if (bitset[pos++] != 0) {
  					return 0;
  				}
  			}
  			end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
  			/* set bits from "0" to "end" */
  			tmp = (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
  			return (bitset[pos] & tmp) == 0;
  		} else {
  			end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
  			/* set bits from "bit" to "end" */
  			tmp = (zend_mm_bitset)-1 << bit;
  			tmp &= (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
  			return (bitset[pos] & tmp) == 0;
  		}
  	}
  }
  
  /**********/
  /* Chunks */
  /**********/
  
  static void *zend_mm_chunk_alloc_int(size_t size, size_t alignment)
  {
  	void *ptr = zend_mm_mmap(size);
  
  	if (ptr == NULL) {
  		return NULL;
  	} else if (ZEND_MM_ALIGNED_OFFSET(ptr, alignment) == 0) {
  #ifdef MADV_HUGEPAGE
  	    madvise(ptr, size, MADV_HUGEPAGE);
  #endif
  		return ptr;
  	} else {
  		size_t offset;
  
  		/* chunk has to be aligned */
  		zend_mm_munmap(ptr, size);
  		ptr = zend_mm_mmap(size + alignment - ZEND_MM_PAGE_SIZE);
  #ifdef _WIN32
  		offset = ZEND_MM_ALIGNED_OFFSET(ptr, alignment);
  		zend_mm_munmap(ptr, size + alignment - ZEND_MM_PAGE_SIZE);
  		ptr = zend_mm_mmap_fixed((void*)((char*)ptr + (alignment - offset)), size);
  		offset = ZEND_MM_ALIGNED_OFFSET(ptr, alignment);
  		if (offset != 0) {
  			zend_mm_munmap(ptr, size);
  			return NULL;
  		}
  		return ptr;
  #else
  		offset = ZEND_MM_ALIGNED_OFFSET(ptr, alignment);
  		if (offset != 0) {
  			offset = alignment - offset;
  			zend_mm_munmap(ptr, offset);
  			ptr = (char*)ptr + offset;
  		} else {
  			zend_mm_munmap((char*)ptr + size, alignment - ZEND_MM_PAGE_SIZE);
  		}
  # ifdef MADV_HUGEPAGE
  	    madvise(ptr, size, MADV_HUGEPAGE);
  # endif
  #endif
  		return ptr;
  	}
  }
  
  static void *zend_mm_chunk_alloc(zend_mm_heap *heap, size_t size, size_t alignment)
  {
  #if ZEND_MM_STORAGE
  	if (UNEXPECTED(heap->storage)) {
  		void *ptr = heap->storage->chunk_alloc(heap->storage, size, alignment);
  		ZEND_ASSERT(((zend_uintptr_t)((char*)ptr + (alignment-1)) & (alignment-1)) == (zend_uintptr_t)ptr);
  		return ptr;
  	}
  #endif
  	return zend_mm_chunk_alloc_int(size, alignment);
  }
  
  static void zend_mm_chunk_free(zend_mm_heap *heap, void *addr, size_t size)
  {
  #if ZEND_MM_STORAGE
  	if (UNEXPECTED(heap->storage)) {
  		heap->storage->chunk_free(heap->storage, addr, size);
  		return;
  	}
  #endif
  	zend_mm_munmap(addr, size);
  }
  
  static void zend_mm_chunk_truncate(zend_mm_heap *heap, void *addr, size_t old_size, size_t new_size)
  {
  #if ZEND_MM_STORAGE
  	if (UNEXPECTED(heap->storage)) {
  		heap->storage->chunk_truncate(heap->storage, addr, old_size, new_size);
  		return;
  	}
  #endif
  	zend_mm_munmap((char*)addr + new_size, old_size - new_size);
  }
  
  static zend_always_inline void zend_mm_chunk_init(zend_mm_heap *heap, zend_mm_chunk *chunk)
  {
  	chunk->heap = heap;
  	chunk->next = heap->main_chunk;
  	chunk->prev = heap->main_chunk->prev;
  	chunk->prev->next = chunk;
  	chunk->next->prev = chunk;
  	/* mark first pages as allocated */
  	chunk->free_pages = ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE;
  	chunk->free_tail = ZEND_MM_FIRST_PAGE;
  	/* the younger chunks have bigger number */
  	chunk->num = chunk->prev->num + 1;
  	/* mark first pages as allocated */
  	chunk->free_map[0] = (1L << ZEND_MM_FIRST_PAGE) - 1;
  	chunk->map[0] = ZEND_MM_LRUN(ZEND_MM_FIRST_PAGE);
  }
  
  /***********************/
  /* Huge Runs (forward) */
  /***********************/
  
  static size_t zend_mm_get_huge_block_size(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
  static void *zend_mm_alloc_huge(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
  static void zend_mm_free_huge(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
  
  #if ZEND_DEBUG
  static void zend_mm_change_huge_block_size(zend_mm_heap *heap, void *ptr, size_t size, size_t dbg_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
  #else
  static void zend_mm_change_huge_block_size(zend_mm_heap *heap, void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
  #endif
  
  /**************/
  /* Large Runs */
  /**************/
  
  #if ZEND_DEBUG
  static void *zend_mm_alloc_pages(zend_mm_heap *heap, int pages_count, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  #else
  static void *zend_mm_alloc_pages(zend_mm_heap *heap, int pages_count ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  #endif
  {
  	zend_mm_chunk *chunk = heap->main_chunk;
  	int page_num, len;
  
  	while (1) {
  		if (UNEXPECTED(chunk->free_pages < pages_count)) {
  			goto not_found;
  #if 0
  		} else if (UNEXPECTED(chunk->free_pages + chunk->free_tail == ZEND_MM_PAGES)) {
  			if (UNEXPECTED(ZEND_MM_PAGES - chunk->free_tail < pages_count)) {
  				goto not_found;
  			} else {
  				page_num = chunk->free_tail;
  				goto found;
  			}
  		} else if (0) {
  			/* First-Fit Search */
  			int free_tail = chunk->free_tail;
  			zend_mm_bitset *bitset = chunk->free_map;
  			zend_mm_bitset tmp = *(bitset++);
  			int i = 0;
  
  			while (1) {
  				/* skip allocated blocks */
  				while (tmp == (zend_mm_bitset)-1) {
  					i += ZEND_MM_BITSET_LEN;
  					if (i == ZEND_MM_PAGES) {
  						goto not_found;
  					}
  					tmp = *(bitset++);
  				}
  				/* find first 0 bit */
  				page_num = i + zend_mm_bitset_nts(tmp);
  				/* reset bits from 0 to "bit" */
  				tmp &= tmp + 1;
  				/* skip free blocks */
  				while (tmp == 0) {
  					i += ZEND_MM_BITSET_LEN;
  					len = i - page_num;
  					if (len >= pages_count) {
  						goto found;
  					} else if (i >= free_tail) {
  						goto not_found;
  					}
  					tmp = *(bitset++);
  				}
  				/* find first 1 bit */
  				len = (i + zend_mm_bitset_ntz(tmp)) - page_num;
  				if (len >= pages_count) {
  					goto found;
  				}
  				/* set bits from 0 to "bit" */
  				tmp |= tmp - 1;
  			}
  #endif
  		} else {
  			/* Best-Fit Search */
  			int best = -1;
  			int best_len = ZEND_MM_PAGES;
  			int free_tail = chunk->free_tail;
  			zend_mm_bitset *bitset = chunk->free_map;
  			zend_mm_bitset tmp = *(bitset++);
  			int i = 0;
  
  			while (1) {
  				/* skip allocated blocks */
  				while (tmp == (zend_mm_bitset)-1) {
  					i += ZEND_MM_BITSET_LEN;
  					if (i == ZEND_MM_PAGES) {
  						if (best > 0) {
  							page_num = best;
  							goto found;
  						} else {
  							goto not_found;
  						}
  					}
  					tmp = *(bitset++);
  				}
  				/* find first 0 bit */
  				page_num = i + zend_mm_bitset_nts(tmp);
  				/* reset bits from 0 to "bit" */
  				tmp &= tmp + 1;
  				/* skip free blocks */
  				while (tmp == 0) {
  					i += ZEND_MM_BITSET_LEN;
  					if (i >= free_tail) {
  						len = ZEND_MM_PAGES - page_num;
  						if (len >= pages_count && len < best_len) {
  							chunk->free_tail = page_num + pages_count;
  							goto found;
  						} else {
  							/* set accurate value */
  							chunk->free_tail = page_num;
  							if (best > 0) {
  								page_num = best;
  								goto found;
  							} else {
  								goto not_found;
  							}
  						}
  					}
  					tmp = *(bitset++);
  				}
  				/* find first 1 bit */
  				len = i + zend_mm_bitset_ntz(tmp) - page_num;
  				if (len >= pages_count) {
  					if (len == pages_count) {
  						goto found;
  					} else if (len < best_len) {
  						best_len = len;
  						best = page_num;
  					}
  				}
  				/* set bits from 0 to "bit" */
  				tmp |= tmp - 1;
  			}
  		}
  
  not_found:
  		if (chunk->next == heap->main_chunk) {
  			if (heap->cached_chunks) {
  				heap->cached_chunks_count--;
  				chunk = heap->cached_chunks;
  				heap->cached_chunks = chunk->next;
  			} else {
  #if ZEND_MM_LIMIT
  				if (heap->real_size + ZEND_MM_CHUNK_SIZE > heap->limit) {
  					if (heap->overflow == 0) {
  #if ZEND_DEBUG
  						zend_mm_safe_error(heap, "Allowed memory size of %zu bytes exhausted at %s:%d (tried to allocate %zu bytes)", heap->limit, __zend_filename, __zend_lineno, size);
  #else
  						zend_mm_safe_error(heap, "Allowed memory size of %zu bytes exhausted (tried to allocate %zu bytes)", heap->limit, ZEND_MM_PAGE_SIZE * pages_count);
  #endif
  						return NULL;
  					}
  				}
  #endif
  				chunk = (zend_mm_chunk*)zend_mm_chunk_alloc(heap, ZEND_MM_CHUNK_SIZE, ZEND_MM_CHUNK_SIZE);
  				if (UNEXPECTED(chunk == NULL)) {
  					/* insufficient memory */
  #if !ZEND_MM_LIMIT
  					zend_mm_safe_error(heap, "Out of memory");
  #elif ZEND_DEBUG
  					zend_mm_safe_error(heap, "Out of memory (allocated %zu) at %s:%d (tried to allocate %zu bytes)", heap->real_size, __zend_filename, __zend_lineno, size);
  #else
  					zend_mm_safe_error(heap, "Out of memory (allocated %zu) (tried to allocate %zu bytes)", heap->real_size, ZEND_MM_PAGE_SIZE * pages_count);
  #endif
  					return NULL;
  				}
  #if ZEND_MM_STAT
  				do {
  					size_t size = heap->real_size + ZEND_MM_CHUNK_SIZE;
  					size_t peak = MAX(heap->real_peak, size);
  					heap->real_size = size;
  					heap->real_peak = peak;
  				} while (0);
  #elif ZEND_MM_LIMIT
  				heap->real_size += ZEND_MM_CHUNK_SIZE;
  
  #endif
  			}
  			heap->chunks_count++;
  			if (heap->chunks_count > heap->peak_chunks_count) {
  				heap->peak_chunks_count = heap->chunks_count;
  			}
  			zend_mm_chunk_init(heap, chunk);
  			page_num = ZEND_MM_FIRST_PAGE;
  			len = ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE;
  			goto found;
  		} else {
  			chunk = chunk->next;
  		}
  	}
  
  found:
  	/* mark run as allocated */
  	chunk->free_pages -= pages_count;
  	zend_mm_bitset_set_range(chunk->free_map, page_num, pages_count);
  	chunk->map[page_num] = ZEND_MM_LRUN(pages_count);
  	if (page_num == chunk->free_tail) {
  		chunk->free_tail = page_num + pages_count;
  	}
  	return ZEND_MM_PAGE_ADDR(chunk, page_num);
  }
  
  static zend_always_inline void *zend_mm_alloc_large(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	int pages_count = (int)ZEND_MM_SIZE_TO_NUM(size, ZEND_MM_PAGE_SIZE);
  #if ZEND_DEBUG
  	void *ptr = zend_mm_alloc_pages(heap, pages_count, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #else
  	void *ptr = zend_mm_alloc_pages(heap, pages_count ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #endif
  #if ZEND_MM_STAT
  	do {
  		size_t size = heap->size + pages_count * ZEND_MM_PAGE_SIZE;
  		size_t peak = MAX(heap->peak, size);
  		heap->size = size;
  		heap->peak = peak;
  	} while (0);
  #endif
  	return ptr;
  }
  
  static void zend_mm_free_pages(zend_mm_heap *heap, zend_mm_chunk *chunk, int page_num, int pages_count)
  {
  	chunk->free_pages += pages_count;
  	zend_mm_bitset_reset_range(chunk->free_map, page_num, pages_count);
  	chunk->map[page_num] = 0;
  	if (chunk->free_tail == page_num + pages_count) {
  		/* this setting may be not accurate */
  		chunk->free_tail = page_num;
  	}
  	if (chunk->free_pages == ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE) {
  		/* delete chunk */
  		chunk->next->prev = chunk->prev;
  		chunk->prev->next = chunk->next;
  		heap->chunks_count--;
  		if (heap->chunks_count + heap->cached_chunks_count < heap->avg_chunks_count + 0.1) {
  			/* delay deletion */
  			heap->cached_chunks_count++;
  			chunk->next = heap->cached_chunks;
  			heap->cached_chunks = chunk;
  		} else {
  #if ZEND_MM_STAT || ZEND_MM_LIMIT
  			heap->real_size -= ZEND_MM_CHUNK_SIZE;
  #endif
  			if (!heap->cached_chunks || chunk->num > heap->cached_chunks->num) {
  				zend_mm_chunk_free(heap, chunk, ZEND_MM_CHUNK_SIZE);
  			} else {
  //TODO: select the best chunk to delete???
  				chunk->next = heap->cached_chunks->next;
  				zend_mm_chunk_free(heap, heap->cached_chunks, ZEND_MM_CHUNK_SIZE);
  				heap->cached_chunks = chunk;
  			}
  		}
  	}
  }
  
  static zend_always_inline void zend_mm_free_large(zend_mm_heap *heap, zend_mm_chunk *chunk, int page_num, int pages_count)
  {
  #if ZEND_MM_STAT
  	heap->size -= pages_count * ZEND_MM_PAGE_SIZE;
  #endif
  	zend_mm_free_pages(heap, chunk, page_num, pages_count);
  }
  
  /**************/
  /* Small Runs */
  /**************/
  
  /* higher set bit number (0->N/A, 1->1, 2->2, 4->3, 8->4, 127->7, 128->8 etc) */
  static zend_always_inline int zend_mm_small_size_to_bit(int size)
  {
  #if defined(__GNUC__)
  	return (__builtin_clz(size) ^ 0x1f) + 1;
  #elif defined(_WIN32)
  	unsigned long index;
  
  	if (!BitScanReverse(&index, (unsigned long)size)) {
  		/* undefined behavior */
  		return 64;
  	}
  
  	return (((31 - (int)index) ^ 0x1f) + 1);
  #else
  	int n = 16;
  	if (size <= 0x00ff) {n -= 8; size = size << 8;}
  	if (size <= 0x0fff) {n -= 4; size = size << 4;}
  	if (size <= 0x3fff) {n -= 2; size = size << 2;}
  	if (size <= 0x7fff) {n -= 1;}
  	return n;
  #endif
  }
  
  #ifndef MAX
  # define MAX(a, b) (((a) > (b)) ? (a) : (b))
  #endif
  
  #ifndef MIN
  # define MIN(a, b) (((a) < (b)) ? (a) : (b))
  #endif
  
  static zend_always_inline int zend_mm_small_size_to_bin(size_t size)
  {
  #if 0
  	int n;
                              /*0,  1,  2,  3,  4,  5,  6,  7,  8,  9  10, 11, 12*/
  	static const int f1[] = { 3,  3,  3,  3,  3,  3,  3,  4,  5,  6,  7,  8,  9};
  	static const int f2[] = { 0,  0,  0,  0,  0,  0,  0,  4,  8, 12, 16, 20, 24};
  
  	if (UNEXPECTED(size <= 2)) return 0;
  	n = zend_mm_small_size_to_bit(size - 1);
  	return ((size-1) >> f1[n]) + f2[n];
  #else
  	int t1, t2, t3;
  
  	if (UNEXPECTED(size <= 8)) return 0;
  	t1 = (int)(size - 1);
  	t2 = zend_mm_small_size_to_bit(t1);
  	t3 = t2 - 6;
  	t3 = (t3 < 0) ? 0 : t3;
  	t2 = t3 + 3;
  	t1 = t1 >> t2;
  	t3 = t3 << 2;
  	return t1 + t3;
  #endif
  }
  
  #define ZEND_MM_SMALL_SIZE_TO_BIN(size)  zend_mm_small_size_to_bin(size)
  
  static zend_never_inline void *zend_mm_alloc_small_slow(zend_mm_heap *heap, int bin_num ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
      zend_mm_chunk *chunk;
      int page_num;
  	zend_mm_bin *bin;
  	zend_mm_free_slot *p, *end;
  
  #if ZEND_DEBUG
  	bin = (zend_mm_bin*)zend_mm_alloc_pages(heap, bin_pages[bin_num], bin_data_size[bin_num] ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #else
  	bin = (zend_mm_bin*)zend_mm_alloc_pages(heap, bin_pages[bin_num] ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #endif
  	if (UNEXPECTED(bin == NULL)) {
  		/* insufficient memory */
  		return NULL;
  	}
  
  	chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(bin, ZEND_MM_CHUNK_SIZE);
  	page_num = ZEND_MM_ALIGNED_OFFSET(bin, ZEND_MM_CHUNK_SIZE) / ZEND_MM_PAGE_SIZE;
  	chunk->map[page_num] = ZEND_MM_SRUN(bin_num);
  	if (bin_pages[bin_num] > 1) {
  		int i = 1;
  		do {
  			chunk->map[page_num+i] = ZEND_MM_SRUN(bin_num);
  			i++;
  		} while (i < bin_pages[bin_num]);
  	}
  
  	/* create a linked list of elements from 1 to last */
  	end = (zend_mm_free_slot*)((char*)bin + (bin_data_size[bin_num] * (bin_elements[bin_num] - 1)));
  	heap->free_slot[bin_num] = p = (zend_mm_free_slot*)((char*)bin + bin_data_size[bin_num]);
  	do {
  		p->next_free_slot = (zend_mm_free_slot*)((char*)p + bin_data_size[bin_num]);;
  #if ZEND_DEBUG
  		do {
  			zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + bin_data_size[bin_num] - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
  			dbg->size = 0;
  		} while (0);
  #endif
  		p = (zend_mm_free_slot*)((char*)p + bin_data_size[bin_num]);
  	} while (p != end);
  
  	/* terminate list using NULL */
  	p->next_free_slot = NULL;
  #if ZEND_DEBUG
  		do {
  			zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + bin_data_size[bin_num] - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
  			dbg->size = 0;
  		} while (0);
  #endif
  
  	/* return first element */
  	return (char*)bin;
  }
  
  static zend_always_inline void *zend_mm_alloc_small(zend_mm_heap *heap, size_t size, int bin_num ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  #if ZEND_MM_STAT
  	do {
  		size_t size = heap->size + bin_data_size[bin_num];
  		size_t peak = MAX(heap->peak, size);
  		heap->size = size;
  		heap->peak = peak;
  	} while (0);
  #endif
  
  	if (EXPECTED(heap->free_slot[bin_num] != NULL)) {
  		zend_mm_free_slot *p = heap->free_slot[bin_num];
  		heap->free_slot[bin_num] = p->next_free_slot;
  		return (void*)p;
  	} else {
  		return zend_mm_alloc_small_slow(heap, bin_num ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  	}
  }
  
  static zend_always_inline void zend_mm_free_small(zend_mm_heap *heap, void *ptr, int bin_num)
  {
  	zend_mm_free_slot *p;
  
  #if ZEND_MM_STAT
  	heap->size -= bin_data_size[bin_num];
  #endif
  
  #if ZEND_DEBUG
  	do {
  		zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)ptr + bin_data_size[bin_num] - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
  		dbg->size = 0;
  	} while (0);
  #endif
  
      p = (zend_mm_free_slot*)ptr;
      p->next_free_slot = heap->free_slot[bin_num];
      heap->free_slot[bin_num] = p;
  }
  
  /********/
  /* Heap */
  /********/
  
  #if ZEND_DEBUG
  static zend_always_inline zend_mm_debug_info *zend_mm_get_debug_info(zend_mm_heap *heap, void *ptr)
  {
  	size_t page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE);
  	zend_mm_chunk *chunk;
  	int page_num;
  	zend_mm_page_info info;
  
  	ZEND_MM_CHECK(page_offset != 0, "zend_mm_heap corrupted");
  	chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE);
  	page_num = (int)(page_offset / ZEND_MM_PAGE_SIZE);
  	info = chunk->map[page_num];
  	ZEND_MM_CHECK(chunk->heap == heap, "zend_mm_heap corrupted");
  	if (EXPECTED(info & ZEND_MM_IS_SRUN)) {
  		int bin_num = ZEND_MM_SRUN_BIN_NUM(info);
  		return (zend_mm_debug_info*)((char*)ptr + bin_data_size[bin_num] - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
  	} else /* if (info & ZEND_MM_IS_LRUN) */ {
  		int pages_count = ZEND_MM_LRUN_PAGES(info);
  
  		return (zend_mm_debug_info*)((char*)ptr + ZEND_MM_PAGE_SIZE * pages_count - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
  	}
  }
  #endif
  
  static zend_always_inline void *zend_mm_alloc_heap(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	void *ptr;
  #if ZEND_DEBUG
  	size_t real_size = size;
  	zend_mm_debug_info *dbg;
  
  	/* special handling for zero-size allocation */
  	size = MAX(size, 1);
  	size = ZEND_MM_ALIGNED_SIZE(size) + ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info));
  #endif
  	if (size <= ZEND_MM_MAX_SMALL_SIZE) {
  		ptr = zend_mm_alloc_small(heap, size, ZEND_MM_SMALL_SIZE_TO_BIN(size) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #if ZEND_DEBUG
  		dbg = zend_mm_get_debug_info(heap, ptr);
  		dbg->size = real_size;
  		dbg->filename = __zend_filename;
  		dbg->orig_filename = __zend_orig_filename;
  		dbg->lineno = __zend_lineno;
  		dbg->orig_lineno = __zend_orig_lineno;
  #endif
  		return ptr;
  	} else if (size <= ZEND_MM_MAX_LARGE_SIZE) {
  		ptr = zend_mm_alloc_large(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #if ZEND_DEBUG
  		dbg = zend_mm_get_debug_info(heap, ptr);
  		dbg->size = real_size;
  		dbg->filename = __zend_filename;
  		dbg->orig_filename = __zend_orig_filename;
  		dbg->lineno = __zend_lineno;
  		dbg->orig_lineno = __zend_orig_lineno;
  #endif
  		return ptr;
  	} else {
  #if ZEND_DEBUG
  		size = real_size;
  #endif
  		return zend_mm_alloc_huge(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  	}
  }
  
  static zend_always_inline void zend_mm_free_heap(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	size_t page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE);
  
  	if (UNEXPECTED(page_offset == 0)) {
  		if (ptr != NULL) {
  			zend_mm_free_huge(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  		}
  	} else {
  		zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE);
  		int page_num = (int)(page_offset / ZEND_MM_PAGE_SIZE);
  		zend_mm_page_info info = chunk->map[page_num];
  
  		ZEND_MM_CHECK(chunk->heap == heap, "zend_mm_heap corrupted");
  		if (EXPECTED(info & ZEND_MM_IS_SRUN)) {
  			zend_mm_free_small(heap, ptr, ZEND_MM_SRUN_BIN_NUM(info));
  		} else /* if (info & ZEND_MM_IS_LRUN) */ {
  			int pages_count = ZEND_MM_LRUN_PAGES(info);
  
  			ZEND_MM_CHECK(ZEND_MM_ALIGNED_OFFSET(page_offset, ZEND_MM_PAGE_SIZE) == 0, "zend_mm_heap corrupted");
  			zend_mm_free_large(heap, chunk, page_num, pages_count);
  		}
  	}
  }
  
  static size_t zend_mm_size(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	size_t page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE);
  
  	if (UNEXPECTED(page_offset == 0)) {
  		return zend_mm_get_huge_block_size(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  	} else {
  		zend_mm_chunk *chunk;
  #if 0 && ZEND_DEBUG
  		zend_mm_debug_info *dbg = zend_mm_get_debug_info(heap, ptr);
  		return dbg->size;
  #else
  		int page_num;
  		zend_mm_page_info info;
  
  		chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE);
  		page_num = (int)(page_offset / ZEND_MM_PAGE_SIZE);
  		info = chunk->map[page_num];
  		ZEND_MM_CHECK(chunk->heap == heap, "zend_mm_heap corrupted");
  		if (EXPECTED(info & ZEND_MM_IS_SRUN)) {
  			return bin_data_size[ZEND_MM_SRUN_BIN_NUM(info)];
  		} else /* if (info & ZEND_MM_IS_LARGE_RUN) */ {
  			return ZEND_MM_LRUN_PAGES(info) * ZEND_MM_PAGE_SIZE;
  		}
  #endif
  	}
  }
  
  static void *zend_mm_realloc_heap(zend_mm_heap *heap, void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	size_t page_offset;
  	size_t old_size;
  	size_t new_size;
  	void *ret;
  #if ZEND_DEBUG
  	size_t real_size;
  	zend_mm_debug_info *dbg;
  #endif
  
  	page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE);
  	if (UNEXPECTED(page_offset == 0)) {
  		if (UNEXPECTED(ptr == NULL)) {
  			return zend_mm_alloc_heap(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  		}
  		old_size = zend_mm_get_huge_block_size(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #if ZEND_DEBUG
  		real_size = size;
  		size = ZEND_MM_ALIGNED_SIZE(size) + ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info));
  #endif
  		if (size > ZEND_MM_MAX_LARGE_SIZE) {
  #if ZEND_DEBUG
  			size = real_size;
  #endif
  			new_size = ZEND_MM_ALIGNED_SIZE_EX(size, ZEND_MM_PAGE_SIZE);
  			if (new_size == old_size) {
  #if ZEND_DEBUG
  				zend_mm_change_huge_block_size(heap, ptr, new_size, real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #else
  				zend_mm_change_huge_block_size(heap, ptr, new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #endif
  				return ptr;
  #ifndef _WIN32
  			} else if (new_size < old_size) {
  				/* unmup tail */
  				zend_mm_chunk_truncate(heap, ptr, old_size, new_size);
  #if ZEND_MM_STAT || ZEND_MM_LIMIT
  				heap->real_size -= old_size - new_size;
  #endif
  #if ZEND_MM_STAT
  				heap->size -= old_size - new_size;
  #endif
  #if ZEND_DEBUG
  				zend_mm_change_huge_block_size(heap, ptr, new_size, real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #else
  				zend_mm_change_huge_block_size(heap, ptr, new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #endif
  				return ptr;
  			} else /* if (new_size > old_size) */ {
  #if ZEND_MM_LIMIT
  				if (heap->real_size + (new_size - old_size) > heap->limit) {
  					if (heap->overflow == 0) {
  #if ZEND_DEBUG
  						zend_mm_safe_error(heap, "Allowed memory size of %zu bytes exhausted at %s:%d (tried to allocate %zu bytes)", heap->limit, __zend_filename, __zend_lineno, size);
  #else
  						zend_mm_safe_error(heap, "Allowed memory size of %zu bytes exhausted (tried to allocate %zu bytes)", heap->limit, size);
  #endif
  						return NULL;
  					}
  				}
  #endif
  				/* try to map tail right after this block */
  				if (zend_mm_mmap_fixed((char*)ptr + old_size, new_size - old_size)) {
  #if ZEND_MM_STAT || ZEND_MM_LIMIT
  					heap->real_size += new_size - old_size;
  #endif
  #if ZEND_MM_STAT
  					heap->size += new_size - old_size;
  #endif
  #if ZEND_DEBUG
  					zend_mm_change_huge_block_size(heap, ptr, new_size, real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #else
  					zend_mm_change_huge_block_size(heap, ptr, new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #endif
  					return ptr;
  				}
  #endif
  			}
  		}
  	} else {
  		zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE);
  		int page_num = (int)(page_offset / ZEND_MM_PAGE_SIZE);
  		zend_mm_page_info info = chunk->map[page_num];
  #if ZEND_DEBUG
  		size_t real_size = size;
  
  		size = ZEND_MM_ALIGNED_SIZE(size) + ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info));
  #endif
  
  		ZEND_MM_CHECK(chunk->heap == heap, "zend_mm_heap corrupted");
  		if (info & ZEND_MM_IS_SRUN) {
  			int old_bin_num, bin_num;
  
  			old_bin_num = ZEND_MM_SRUN_BIN_NUM(info);
  			old_size = bin_data_size[old_bin_num];
  			bin_num = ZEND_MM_SMALL_SIZE_TO_BIN(size);
  			if (old_bin_num == bin_num) {
  #if ZEND_DEBUG
  				dbg = zend_mm_get_debug_info(heap, ptr);
  				dbg->size = real_size;
  				dbg->filename = __zend_filename;
  				dbg->orig_filename = __zend_orig_filename;
  				dbg->lineno = __zend_lineno;
  				dbg->orig_lineno = __zend_orig_lineno;
  #endif
  				return ptr;
  			}
  		} else /* if (info & ZEND_MM_IS_LARGE_RUN) */ {
  			ZEND_MM_CHECK(ZEND_MM_ALIGNED_OFFSET(page_offset, ZEND_MM_PAGE_SIZE) == 0, "zend_mm_heap corrupted");
  			old_size = ZEND_MM_LRUN_PAGES(info) * ZEND_MM_PAGE_SIZE;
  			if (size > ZEND_MM_MAX_SMALL_SIZE && size <= ZEND_MM_MAX_LARGE_SIZE) {
  				new_size = ZEND_MM_ALIGNED_SIZE_EX(size, ZEND_MM_PAGE_SIZE);
  				if (new_size == old_size) {
  #if ZEND_DEBUG
  					dbg = zend_mm_get_debug_info(heap, ptr);
  					dbg->size = real_size;
  					dbg->filename = __zend_filename;
  					dbg->orig_filename = __zend_orig_filename;
  					dbg->lineno = __zend_lineno;
  					dbg->orig_lineno = __zend_orig_lineno;
  #endif
  					return ptr;
  				} else if (new_size < old_size) {
  					/* free tail pages */
  					int new_pages_count = (int)(new_size / ZEND_MM_PAGE_SIZE);
  					int rest_pages_count = (int)((old_size - new_size) / ZEND_MM_PAGE_SIZE);
  
  #if ZEND_MM_STAT
  					heap->size -= rest_pages_count * ZEND_MM_PAGE_SIZE;
  #endif
  					chunk->map[page_num] = ZEND_MM_LRUN(new_pages_count);
  					chunk->free_pages += rest_pages_count;
  					zend_mm_bitset_reset_range(chunk->free_map, page_num + new_pages_count, rest_pages_count);
  #if ZEND_DEBUG
  					dbg = zend_mm_get_debug_info(heap, ptr);
  					dbg->size = real_size;
  					dbg->filename = __zend_filename;
  					dbg->orig_filename = __zend_orig_filename;
  					dbg->lineno = __zend_lineno;
  					dbg->orig_lineno = __zend_orig_lineno;
  #endif
  					return ptr;
  				} else /* if (new_size > old_size) */ {
  					int new_pages_count = (int)(new_size / ZEND_MM_PAGE_SIZE);
  					int old_pages_count = (int)(old_size / ZEND_MM_PAGE_SIZE);
  
  					/* try to allocate tail pages after this block */
  					if (page_num + new_pages_count <= ZEND_MM_PAGES &&
  					    zend_mm_bitset_is_free_range(chunk->free_map, page_num + old_pages_count, new_pages_count - old_pages_count)) {
  #if ZEND_MM_STAT
  						do {
  							size_t size = heap->size + (new_size - old_size);
  							size_t peak = MAX(heap->peak, size);
  							heap->size = size;
  							heap->peak = peak;
  						} while (0);
  #endif
  						chunk->free_pages -= new_pages_count - old_pages_count;
  						zend_mm_bitset_set_range(chunk->free_map, page_num + old_pages_count, new_pages_count - old_pages_count);
  						chunk->map[page_num] = ZEND_MM_LRUN(new_pages_count);
  #if ZEND_DEBUG
  						dbg = zend_mm_get_debug_info(heap, ptr);
  						dbg->size = real_size;
  						dbg->filename = __zend_filename;
  						dbg->orig_filename = __zend_orig_filename;
  						dbg->lineno = __zend_lineno;
  						dbg->orig_lineno = __zend_orig_lineno;
  #endif
  						return ptr;
  					}
  				}
  			}
  		}
  #if ZEND_DEBUG
  		size = real_size;
  #endif
  	}
  
  	/* Naive reallocation */
  	old_size = zend_mm_size(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  	ret = zend_mm_alloc_heap(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  	memcpy(ret, ptr, MIN(old_size, size));
  	zend_mm_free_heap(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  	return ret;
  }
  
  /*********************/
  /* Huge Runs (again) */
  /*********************/
  
  #if ZEND_DEBUG
  static void zend_mm_add_huge_block(zend_mm_heap *heap, void *ptr, size_t size, size_t dbg_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  #else
  static void zend_mm_add_huge_block(zend_mm_heap *heap, void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  #endif
  {
  	zend_mm_huge_list *list = (zend_mm_huge_list*)zend_mm_alloc_heap(heap, sizeof(zend_mm_huge_list) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  	list->ptr = ptr;
  	list->size = size;
  	list->next = heap->huge_list;
  #if ZEND_DEBUG
  	list->dbg.size = dbg_size;
  	list->dbg.filename = __zend_filename;
  	list->dbg.orig_filename = __zend_orig_filename;
  	list->dbg.lineno = __zend_lineno;
  	list->dbg.orig_lineno = __zend_orig_lineno;
  #endif
  	heap->huge_list = list;
  }
  
  static size_t zend_mm_del_huge_block(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	zend_mm_huge_list *prev = NULL;
  	zend_mm_huge_list *list = heap->huge_list;
  	while (list != NULL) {
  		if (list->ptr == ptr) {
  			size_t size;
  
  			if (prev) {
  				prev->next = list->next;
  			} else {
  				heap->huge_list = list->next;
  			}
  			size = list->size;
  			zend_mm_free_heap(heap, list ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  			return size;
  		}
  		prev = list;
  		list = list->next;
  	}
  	ZEND_MM_CHECK(0, "zend_mm_heap corrupted");
  	return 0;
  }
  
  static size_t zend_mm_get_huge_block_size(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	zend_mm_huge_list *list = heap->huge_list;
  	while (list != NULL) {
  		if (list->ptr == ptr) {
  			return list->size;
  		}
  		list = list->next;
  	}
  	ZEND_MM_CHECK(0, "zend_mm_heap corrupted");
  	return 0;
  }
  
  #if ZEND_DEBUG
  static void zend_mm_change_huge_block_size(zend_mm_heap *heap, void *ptr, size_t size, size_t dbg_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  #else
  static void zend_mm_change_huge_block_size(zend_mm_heap *heap, void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  #endif
  {
  	zend_mm_huge_list *list = heap->huge_list;
  	while (list != NULL) {
  		if (list->ptr == ptr) {
  			list->size = size;
  #if ZEND_DEBUG
  			list->dbg.size = dbg_size;
  			list->dbg.filename = __zend_filename;
  			list->dbg.orig_filename = __zend_orig_filename;
  			list->dbg.lineno = __zend_lineno;
  			list->dbg.orig_lineno = __zend_orig_lineno;
  #endif
  			return;
  		}
  		list = list->next;
  	}
  }
  
  static void *zend_mm_alloc_huge(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	size_t new_size = ZEND_MM_ALIGNED_SIZE_EX(size, ZEND_MM_PAGE_SIZE);
  	void *ptr;
  
  #if ZEND_MM_LIMIT
  	if (heap->real_size + new_size > heap->limit) {
  		if (heap->overflow == 0) {
  #if ZEND_DEBUG
  			zend_mm_safe_error(heap, "Allowed memory size of %zu bytes exhausted at %s:%d (tried to allocate %zu bytes)", heap->limit, __zend_filename, __zend_lineno, size);
  #else
  			zend_mm_safe_error(heap, "Allowed memory size of %zu bytes exhausted (tried to allocate %zu bytes)", heap->limit, size);
  #endif
  			return NULL;
  		}
  	}
  #endif
  	ptr = zend_mm_chunk_alloc(heap, new_size, ZEND_MM_CHUNK_SIZE);
  	if (UNEXPECTED(ptr == NULL)) {
  		/* insufficient memory */
  #if !ZEND_MM_LIMIT
  		zend_mm_safe_error(heap, "Out of memory");
  #elif ZEND_DEBUG
  		zend_mm_safe_error(heap, "Out of memory (allocated %zu) at %s:%d (tried to allocate %zu bytes)", heap->real_size, __zend_filename, __zend_lineno, size);
  #else
  		zend_mm_safe_error(heap, "Out of memory (allocated %zu) (tried to allocate %zu bytes)", heap->real_size, size);
  #endif
  		return NULL;
  	}
  #if ZEND_DEBUG
  	zend_mm_add_huge_block(heap, ptr, new_size, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #else
  	zend_mm_add_huge_block(heap, ptr, new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  #endif
  #if ZEND_MM_STAT
  	do {
  		size_t size = heap->real_size + new_size;
  		size_t peak = MAX(heap->real_peak, size);
  		heap->real_size = size;
  		heap->real_peak = peak;
  	} while (0);
  	do {
  		size_t size = heap->size + new_size;
  		size_t peak = MAX(heap->peak, size);
  		heap->size = size;
  		heap->peak = peak;
  	} while (0);
  #elif ZEND_MM_LIMIT
  	heap->real_size += new_size;
  #endif
  	return ptr;
  }
  
  static void zend_mm_free_huge(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	size_t size;
  
  	ZEND_MM_CHECK(ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE) == 0, "zend_mm_heap corrupted");
  	size = zend_mm_del_huge_block(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  	zend_mm_chunk_free(heap, ptr, size);
  #if ZEND_MM_STAT || ZEND_MM_LIMIT
  	heap->real_size -= size;
  #endif
  #if ZEND_MM_STAT
  	heap->size -= size;
  #endif
  }
  
  /******************/
  /* Initialization */
  /******************/
  
  static zend_mm_heap *zend_mm_init(void)
  {
  	zend_mm_chunk *chunk = (zend_mm_chunk*)zend_mm_chunk_alloc_int(ZEND_MM_CHUNK_SIZE, ZEND_MM_CHUNK_SIZE);
  	zend_mm_heap *heap;
  
  	if (UNEXPECTED(chunk == NULL)) {
  #if ZEND_MM_ERROR
  #ifdef _WIN32
  		stderr_last_error("Can't initialize heap");
  #else
  		fprintf(stderr, "\nCan't initialize heap: [%d] %s\n", errno, strerror(errno));
  #endif
  #endif
  		return NULL;
  	}
  	heap = &chunk->heap_slot;
  	chunk->heap = heap;
  	chunk->next = chunk;
  	chunk->prev = chunk;
  	chunk->free_pages = ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE;
  	chunk->free_tail = ZEND_MM_FIRST_PAGE;
  	chunk->num = 0;
  	chunk->free_map[0] = (Z_L(1) << ZEND_MM_FIRST_PAGE) - 1;
  	chunk->map[0] = ZEND_MM_LRUN(ZEND_MM_FIRST_PAGE);
  	heap->main_chunk = chunk;
  	heap->cached_chunks = NULL;
  	heap->chunks_count = 1;
  	heap->peak_chunks_count = 1;
  	heap->cached_chunks_count = 0;
  	heap->avg_chunks_count = 1.0;
  #if ZEND_MM_STAT || ZEND_MM_LIMIT
  	heap->real_size = ZEND_MM_CHUNK_SIZE;
  #endif
  #if ZEND_MM_STAT
  	heap->real_peak = ZEND_MM_CHUNK_SIZE;
  	heap->size = 0;
  	heap->peak = 0;
  #endif
  #if ZEND_MM_LIMIT
  	heap->limit = (Z_L(-1) >> Z_L(1));
  	heap->overflow = 0;
  #endif
  #if ZEND_MM_CUSTOM
  	heap->use_custom_heap = 0;
  #endif
  #if ZEND_MM_STORAGE
  	heap->storage = NULL;
  #endif
  	heap->huge_list = NULL;
  	return heap;
  }
  
  #if ZEND_DEBUG
  /******************/
  /* Leak detection */
  /******************/
  
  static zend_long zend_mm_find_leaks_small(zend_mm_chunk *p, int i, int j, zend_leak_info *leak)
  {
      int empty = 1;
  	zend_long count = 0;
  	int bin_num = ZEND_MM_SRUN_BIN_NUM(p->map[i]);
  	zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * i + bin_data_size[bin_num] * (j + 1) - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
  
  	while (j < bin_elements[bin_num]) {
  		if (dbg->size != 0) {
  			if (dbg->filename == leak->filename && dbg->lineno == leak->lineno) {
  				count++;
  				dbg->size = 0;
  				dbg->filename = NULL;
  				dbg->lineno = 0;
  			} else {
  				empty = 0;
  			}
  		}
  		j++;
  		dbg = (zend_mm_debug_info*)((char*)dbg + bin_data_size[bin_num]);
  	}
  	if (empty) {
  		zend_mm_bitset_reset_range(p->free_map, i, bin_pages[bin_num]);
  	}
  	return count;
  }
  
  static zend_long zend_mm_find_leaks(zend_mm_heap *heap, zend_mm_chunk *p, int i, zend_leak_info *leak)
  {
  	zend_long count = 0;
  
  	do {
  		while (i < p->free_tail) {
  			if (zend_mm_bitset_is_set(p->free_map, i)) {
  				if (p->map[i] & ZEND_MM_IS_SRUN) {
  					int bin_num = ZEND_MM_SRUN_BIN_NUM(p->map[i]);
  					count += zend_mm_find_leaks_small(p, i, 0, leak);
  					i += bin_pages[bin_num];
  				} else /* if (p->map[i] & ZEND_MM_IS_LRUN) */ {
  					int pages_count = ZEND_MM_LRUN_PAGES(p->map[i]);
  					zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * (i + pages_count) - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
  
  					if (dbg->filename == leak->filename && dbg->lineno == leak->lineno) {
  						count++;
  					}
  					zend_mm_bitset_reset_range(p->free_map, i, pages_count);
  					i += pages_count;
  				}
  			} else {
  				i++;
  			}
  		}
  		p = p->next;
  	} while (p != heap->main_chunk);
  	return count;
  }
  
  static void zend_mm_check_leaks(zend_mm_heap *heap TSRMLS_DC)
  {
  	zend_mm_huge_list *list;
  	zend_mm_chunk *p;
  	zend_leak_info leak;
  	zend_long repeated = 0;
  	uint32_t total = 0;
  	int i, j;
  
  	/* find leaked huge blocks and free them */
  	list = heap->huge_list;
  	while (list) {
  		zend_mm_huge_list *q = list;
  
  		heap->huge_list = list->next;
  
  		leak.addr = list->ptr;
  		leak.size = list->dbg.size;
  		leak.filename = list->dbg.filename;
  		leak.orig_filename = list->dbg.orig_filename;
  		leak.lineno = list->dbg.lineno;
  		leak.orig_lineno = list->dbg.orig_lineno;
  
  		zend_message_dispatcher(ZMSG_LOG_SCRIPT_NAME, NULL TSRMLS_CC);
  		zend_message_dispatcher(ZMSG_MEMORY_LEAK_DETECTED, &leak TSRMLS_CC);
  //???		repeated = zend_mm_find_leaks_huge(segment, p);
  		total += 1 + repeated;
  		if (repeated) {
  			zend_message_dispatcher(ZMSG_MEMORY_LEAK_REPEATED, (void *)(zend_uintptr_t)repeated TSRMLS_CC);
  		}
  
  		list = list->next;
  		zend_mm_chunk_free(heap, q->ptr, q->size);
  		zend_mm_free_heap(heap, q, NULL, 0, NULL, 0);
  	}
  
  	/* for each chunk */
  	p = heap->main_chunk;
  	do {
  		i = ZEND_MM_FIRST_PAGE;
  		while (i < p->free_tail) {
  			if (zend_mm_bitset_is_set(p->free_map, i)) {
  				if (p->map[i] & ZEND_MM_IS_SRUN) {
  					int bin_num = ZEND_MM_SRUN_BIN_NUM(p->map[i]);
  					zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * i + bin_data_size[bin_num] - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
  
  					j = 0;
  					while (j < bin_elements[bin_num]) {
  						if (dbg->size != 0) {
  							leak.addr = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * i + bin_data_size[bin_num] * j);
  							leak.size = dbg->size;
  							leak.filename = dbg->filename;
  							leak.orig_filename = dbg->orig_filename;
  							leak.lineno = dbg->lineno;
  							leak.orig_lineno = dbg->orig_lineno;
  
  							zend_message_dispatcher(ZMSG_LOG_SCRIPT_NAME, NULL TSRMLS_CC);
  							zend_message_dispatcher(ZMSG_MEMORY_LEAK_DETECTED, &leak TSRMLS_CC);
  
  							dbg->size = 0;
  							dbg->filename = NULL;
  							dbg->lineno = 0;
  
  							repeated = zend_mm_find_leaks_small(p, i, j + 1, &leak) +
  							           zend_mm_find_leaks(heap, p, i + bin_pages[bin_num], &leak);
  							total += 1 + repeated;
  							if (repeated) {
  								zend_message_dispatcher(ZMSG_MEMORY_LEAK_REPEATED, (void *)(zend_uintptr_t)repeated TSRMLS_CC);
  							}
  						}
  						dbg = (zend_mm_debug_info*)((char*)dbg + bin_data_size[bin_num]);
  						j++;
  					}
  					i += bin_pages[bin_num];
  				} else /* if (p->map[i] & ZEND_MM_IS_LRUN) */ {
  					int pages_count = ZEND_MM_LRUN_PAGES(p->map[i]);
  					zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * (i + pages_count) - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
  
  					leak.addr = (void*)((char*)p + ZEND_MM_PAGE_SIZE * i);
  					leak.size = dbg->size;
  					leak.filename = dbg->filename;
  					leak.orig_filename = dbg->orig_filename;
  					leak.lineno = dbg->lineno;
  					leak.orig_lineno = dbg->orig_lineno;
  
  					zend_message_dispatcher(ZMSG_LOG_SCRIPT_NAME, NULL TSRMLS_CC);
  					zend_message_dispatcher(ZMSG_MEMORY_LEAK_DETECTED, &leak TSRMLS_CC);
  
  					zend_mm_bitset_reset_range(p->free_map, i, pages_count);
  
  					repeated = zend_mm_find_leaks(heap, p, i + pages_count, &leak);
  					total += 1 + repeated;
  					if (repeated) {
  						zend_message_dispatcher(ZMSG_MEMORY_LEAK_REPEATED, (void *)(zend_uintptr_t)repeated TSRMLS_CC);
  					}
  					i += pages_count;
  				}
  			} else {
  				i++;
  			}
  		}
  		p = p->next;
  	} while (p != heap->main_chunk);
  	if (total) {
  		zend_message_dispatcher(ZMSG_MEMORY_LEAKS_GRAND_TOTAL, &total TSRMLS_CC);
  	}
  }
  #endif
  
  void zend_mm_shutdown(zend_mm_heap *heap, int full, int silent TSRMLS_DC)
  {
  	zend_mm_chunk *p;
  	zend_mm_huge_list *list;
  
  #if ZEND_MM_CUSTOM
  	if (heap->use_custom_heap) {
  		return;
  	}
  #endif
  
  #if ZEND_DEBUG
  	if (!silent) {
  		zend_mm_check_leaks(heap TSRMLS_CC);
  	}
  #endif
  
  	/* free huge blocks */
  	list = heap->huge_list;
  	while (list) {
  		zend_mm_huge_list *q = list;
  		list = list->next;
  		zend_mm_chunk_free(heap, q->ptr, q->size);
  	}
  
  	/* move all chunks except of the first one into the cache */
  	p = heap->main_chunk->next;
  	while (p != heap->main_chunk) {
  		zend_mm_chunk *q = p->next;
  		p->next = heap->cached_chunks;
  		heap->cached_chunks = p;
  		p = q;
  		heap->chunks_count--;
  		heap->cached_chunks_count++;
  	}
  
  	if (full) {
  		/* free all cached chunks */
  		while (heap->cached_chunks) {
  			p = heap->cached_chunks;
  			heap->cached_chunks = p->next;
  			zend_mm_chunk_free(heap, p, ZEND_MM_CHUNK_SIZE);
  		}
  		/* free the first chunk */
  #if ZEND_MM_STORAGE
  		if (UNEXPECTED(heap->storage)) {
  			zend_mm_storage *storage = heap->storage;
  			zend_mm_chunk_free(heap, heap->main_chunk, ZEND_MM_CHUNK_SIZE);
  			storage->dtor(storage);
  		} else {
  			zend_mm_chunk_free(heap, heap->main_chunk, ZEND_MM_CHUNK_SIZE);
  		}
  #else
  		zend_mm_chunk_free(heap, heap->main_chunk, ZEND_MM_CHUNK_SIZE);
  #endif
  	} else {
  		zend_mm_heap old_heap;
  
  		/* free some cached chunks to keep average count */
  		heap->avg_chunks_count = (heap->avg_chunks_count + (double)heap->peak_chunks_count) / 2.0;
  		while ((double)heap->cached_chunks_count + 0.9 > heap->avg_chunks_count &&
  		       heap->cached_chunks) {
  			p = heap->cached_chunks;
  			heap->cached_chunks = p->next;
  			zend_mm_chunk_free(heap, p, ZEND_MM_CHUNK_SIZE);
  			heap->cached_chunks_count--;
  		}
  		/* clear cached chunks */
  		p = heap->cached_chunks;
  		while (p != NULL) {
  			zend_mm_chunk *q = p->next;
  			memset(p, 0, sizeof(zend_mm_chunk));
  			p->next = q;
  			p = q;
  		}
  
  		/* reinitialize the first chunk and heap */
  		old_heap = *heap;
  		p = heap->main_chunk;
  		memset(p, 0, ZEND_MM_FIRST_PAGE * ZEND_MM_PAGE_SIZE);
  		*heap = old_heap;
  		memset(heap->free_slot, 0, sizeof(heap->free_slot));
  		heap->main_chunk = p;
  		p->heap = &p->heap_slot;
  		p->next = p;
  		p->prev = p;
  		p->free_pages = ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE;
  		p->free_tail = ZEND_MM_FIRST_PAGE;
  		p->free_map[0] = (1L << ZEND_MM_FIRST_PAGE) - 1;
  		p->map[0] = ZEND_MM_LRUN(ZEND_MM_FIRST_PAGE);
  		heap->chunks_count = 1;
  		heap->peak_chunks_count = 1;
  #if ZEND_MM_STAT || ZEND_MM_LIMIT
  		heap->real_size = ZEND_MM_CHUNK_SIZE;
  #endif
  #if ZEND_MM_STAT
  		heap->real_peak = ZEND_MM_CHUNK_SIZE;
  #endif
  	}
  }
  
  /**************/
  /* PUBLIC API */
  /**************/
  
  ZEND_API void* ZEND_FASTCALL _zend_mm_alloc(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	return zend_mm_alloc_heap(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  }
  
  ZEND_API void ZEND_FASTCALL _zend_mm_free(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	zend_mm_free_heap(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  }
  
  void* ZEND_FASTCALL _zend_mm_realloc(zend_mm_heap *heap, void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	return zend_mm_realloc_heap(heap, ptr, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  }
  
  ZEND_API size_t ZEND_FASTCALL _zend_mm_block_size(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	return zend_mm_size(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  }
  
  /**********************/
  /* Allocation Manager */
  /**********************/
  
  typedef struct _zend_alloc_globals {
  	zend_mm_heap *mm_heap;
  } zend_alloc_globals;
  
  #ifdef ZTS
  static int alloc_globals_id;
  # define AG(v) TSRMG(alloc_globals_id, zend_alloc_globals *, v)
  #else
  # define AG(v) (alloc_globals.v)
  static zend_alloc_globals alloc_globals;
  #endif
  
  ZEND_API int is_zend_mm(TSRMLS_D)
  {
  #if ZEND_MM_CUSTOM
  	return !AG(mm_heap)->use_custom_heap;
  #else
  	return 1;
  #endif
  }
  
  #if !ZEND_DEBUG && !defined(_WIN32)
  #undef _emalloc
  
  #if ZEND_MM_CUSTOM
  # define ZEND_MM_CUSTOM_ALLOCATOR(size) do { \
  		if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) { \
  			return AG(mm_heap)->_malloc(size); \
  		} \
  	} while (0)
  # define ZEND_MM_CUSTOM_DEALLOCATOR(ptr) do { \
  		if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) { \
  			AG(mm_heap)->_free(ptr); \
  			return; \
  		} \
  	} while (0)
  #else
  # define ZEND_MM_CUSTOM_ALLOCATOR(size)
  # define ZEND_MM_CUSTOM_DEALLOCATOR(ptr)
  #endif
  
  # define _ZEND_BIN_ALLOCATOR(_num, _size, _elements, _pages, x, y) \
  	ZEND_API void* ZEND_FASTCALL _emalloc_ ## _size(void) { \
  		TSRMLS_FETCH(); \
  		ZEND_MM_CUSTOM_ALLOCATOR(_size); \
  		return zend_mm_alloc_small(AG(mm_heap), _size, _num ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC); \
  	}
  
  ZEND_MM_BINS_INFO(_ZEND_BIN_ALLOCATOR, x, y)
  
  ZEND_API void* ZEND_FASTCALL _emalloc_large(size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	TSRMLS_FETCH();
  
  	ZEND_MM_CUSTOM_ALLOCATOR(size);
  	return zend_mm_alloc_large(AG(mm_heap), size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  }
  
  ZEND_API void* ZEND_FASTCALL _emalloc_huge(size_t size)
  {
  	TSRMLS_FETCH();
  
  	ZEND_MM_CUSTOM_ALLOCATOR(size);
  	return zend_mm_alloc_huge(AG(mm_heap), size);
  }
  
  # define _ZEND_BIN_FREE(_num, _size, _elements, _pages, x, y) \
  	ZEND_API void ZEND_FASTCALL _efree_ ## _size(void *ptr) { \
  		TSRMLS_FETCH(); \
  		ZEND_MM_CUSTOM_DEALLOCATOR(ptr); \
  		{ \
  			size_t page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE); \
  			zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE); \
  			int page_num = page_offset / ZEND_MM_PAGE_SIZE; \
  			ZEND_MM_CHECK(chunk->heap == AG(mm_heap), "zend_mm_heap corrupted"); \
  			ZEND_ASSERT(chunk->map[page_num] & ZEND_MM_IS_SRUN); \
  			ZEND_ASSERT(ZEND_MM_SRUN_BIN_NUM(chunk->map[page_num]) == _num); \
  			zend_mm_free_small(AG(mm_heap), ptr, _num); \
  		} \
  	}
  
  ZEND_MM_BINS_INFO(_ZEND_BIN_FREE, x, y)
  
  ZEND_API void ZEND_FASTCALL _efree_large(void *ptr, size_t size)
  {
  	TSRMLS_FETCH();
  
  	ZEND_MM_CUSTOM_DEALLOCATOR(ptr);
  	{
  		size_t page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE);
  		zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE);
  		int page_num = page_offset / ZEND_MM_PAGE_SIZE;
  		int pages_count = ZEND_MM_ALIGNED_SIZE_EX(size, ZEND_MM_PAGE_SIZE) / ZEND_MM_PAGE_SIZE;
  
  		ZEND_MM_CHECK(chunk->heap == AG(mm_heap) && ZEND_MM_ALIGNED_OFFSET(page_offset, ZEND_MM_PAGE_SIZE) == 0, "zend_mm_heap corrupted");
  		ZEND_ASSERT(chunk->map[page_num] & ZEND_MM_IS_LRUN);
  		ZEND_ASSERT(ZEND_MM_LRUN_PAGES(chunk->map[page_num]) == pages_count);
  		zend_mm_free_large(AG(mm_heap), chunk, page_num, pages_count);
  	}
  }
  
  ZEND_API void ZEND_FASTCALL _efree_huge(void *ptr, size_t size)
  {
  	TSRMLS_FETCH();
  
  	ZEND_MM_CUSTOM_DEALLOCATOR(ptr);
  	// TODO: use size???
  	zend_mm_free_huge(AG(mm_heap), ptr);
  }
  #endif
  
  ZEND_API void* ZEND_FASTCALL _emalloc(size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	TSRMLS_FETCH();
  
  #if ZEND_MM_CUSTOM
  	if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
  		return AG(mm_heap)->_malloc(size);
  	}
  #endif
  	return zend_mm_alloc_heap(AG(mm_heap), size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  }
  
  ZEND_API void ZEND_FASTCALL _efree(void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	TSRMLS_FETCH();
  
  #if ZEND_MM_CUSTOM
  	if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
  		AG(mm_heap)->_free(ptr);
  		return;
  	}
  #endif
  	zend_mm_free_heap(AG(mm_heap), ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  }
  
  ZEND_API void* ZEND_FASTCALL _erealloc(void *ptr, size_t size, int allow_failure ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	TSRMLS_FETCH();
  
  	if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
  		return AG(mm_heap)->_realloc(ptr, size);
  	}
  	return zend_mm_realloc_heap(AG(mm_heap), ptr, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  }
  
  ZEND_API size_t ZEND_FASTCALL _zend_mem_block_size(void *ptr TSRMLS_DC ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
  		return 0;
  	}
  	return zend_mm_size(AG(mm_heap), ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  }
  
  static zend_always_inline size_t safe_address(size_t nmemb, size_t size, size_t offset)
  {
  	int overflow;
  	size_t ret = zend_safe_address(nmemb, size, offset, &overflow);
  
  	if (UNEXPECTED(overflow)) {
  		zend_error_noreturn(E_ERROR, "Possible integer overflow in memory allocation (%zu * %zu + %zu)", nmemb, size, offset);
  		return 0;
  	}
  	return ret;
  }
  
  
  ZEND_API void* ZEND_FASTCALL _safe_emalloc(size_t nmemb, size_t size, size_t offset ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	return emalloc_rel(safe_address(nmemb, size, offset));
  }
  
  ZEND_API void* ZEND_FASTCALL _safe_malloc(size_t nmemb, size_t size, size_t offset)
  {
  	return pemalloc(safe_address(nmemb, size, offset), 1);
  }
  
  ZEND_API void* ZEND_FASTCALL _safe_erealloc(void *ptr, size_t nmemb, size_t size, size_t offset ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	return erealloc_rel(ptr, safe_address(nmemb, size, offset));
  }
  
  ZEND_API void* ZEND_FASTCALL _safe_realloc(void *ptr, size_t nmemb, size_t size, size_t offset)
  {
  	return perealloc(ptr, safe_address(nmemb, size, offset), 1);
  }
  
  
  ZEND_API void* ZEND_FASTCALL _ecalloc(size_t nmemb, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	void *p;
  #ifdef ZEND_SIGNALS
  	TSRMLS_FETCH();
  #endif
  	HANDLE_BLOCK_INTERRUPTIONS();
  
  	p = _safe_emalloc(nmemb, size, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  	if (UNEXPECTED(p == NULL)) {
  		HANDLE_UNBLOCK_INTERRUPTIONS();
  		return p;
  	}
  	memset(p, 0, size * nmemb);
  	HANDLE_UNBLOCK_INTERRUPTIONS();
  	return p;
  }
  
  ZEND_API char* ZEND_FASTCALL _estrdup(const char *s ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	size_t length;
  	char *p;
  #ifdef ZEND_SIGNALS
  	TSRMLS_FETCH();
  #endif
  
  	HANDLE_BLOCK_INTERRUPTIONS();
  
  	length = strlen(s)+1;
  	p = (char *) _emalloc(length ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  	if (UNEXPECTED(p == NULL)) {
  		HANDLE_UNBLOCK_INTERRUPTIONS();
  		return p;
  	}
  	memcpy(p, s, length);
  	HANDLE_UNBLOCK_INTERRUPTIONS();
  	return p;
  }
  
  ZEND_API char* ZEND_FASTCALL _estrndup(const char *s, size_t length ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
  {
  	char *p;
  #ifdef ZEND_SIGNALS
  	TSRMLS_FETCH();
  #endif
  
  	HANDLE_BLOCK_INTERRUPTIONS();
  
  	p = (char *) _emalloc(length+1 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
  	if (UNEXPECTED(p == NULL)) {
  		HANDLE_UNBLOCK_INTERRUPTIONS();
  		return p;
  	}
  	memcpy(p, s, length);
  	p[length] = 0;
  	HANDLE_UNBLOCK_INTERRUPTIONS();
  	return p;
  }
  
  
  ZEND_API char* ZEND_FASTCALL zend_strndup(const char *s, size_t length)
  {
  	char *p;
  #ifdef ZEND_SIGNALS
  	TSRMLS_FETCH();
  #endif
  
  	HANDLE_BLOCK_INTERRUPTIONS();
  
  	p = (char *) malloc(length+1);
  	if (UNEXPECTED(p == NULL)) {
  		HANDLE_UNBLOCK_INTERRUPTIONS();
  		return p;
  	}
  	if (length) {
  		memcpy(p, s, length);
  	}
  	p[length] = 0;
  	HANDLE_UNBLOCK_INTERRUPTIONS();
  	return p;
  }
  
  
  ZEND_API int zend_set_memory_limit(size_t memory_limit TSRMLS_DC)
  {
  #if ZEND_MM_LIMIT
  	AG(mm_heap)->limit = (memory_limit >= ZEND_MM_CHUNK_SIZE) ? memory_limit : ZEND_MM_CHUNK_SIZE;
  #endif
  	return SUCCESS;
  }
  
  ZEND_API size_t zend_memory_usage(int real_usage TSRMLS_DC)
  {
  #if ZEND_MM_STAT
  	if (real_usage) {
  		return AG(mm_heap)->real_size;
  	} else {
  		size_t usage = AG(mm_heap)->size;
  		return usage;
  	}
  #endif
  	return 0;
  }
  
  ZEND_API size_t zend_memory_peak_usage(int real_usage TSRMLS_DC)
  {
  #if ZEND_MM_STAT
  	if (real_usage) {
  		return AG(mm_heap)->real_peak;
  	} else {
  		return AG(mm_heap)->peak;
  	}
  #endif
  	return 0;
  }
  
  ZEND_API void shutdown_memory_manager(int silent, int full_shutdown TSRMLS_DC)
  {
  	zend_mm_shutdown(AG(mm_heap), full_shutdown, silent TSRMLS_CC);
  }
  
  static void alloc_globals_ctor(zend_alloc_globals *alloc_globals TSRMLS_DC)
  {
  #if ZEND_MM_CUSTOM
  	char *tmp = getenv("USE_ZEND_ALLOC");
  
  	if (tmp && !zend_atoi(tmp, 0)) {
  		alloc_globals->mm_heap = malloc(sizeof(zend_mm_heap));
  		memset(alloc_globals->mm_heap, 0, sizeof(zend_mm_heap));
  		alloc_globals->mm_heap->use_custom_heap = 1;
  		alloc_globals->mm_heap->_malloc = malloc;
  		alloc_globals->mm_heap->_free = free;
  		alloc_globals->mm_heap->_realloc = realloc;
  		return;
  	}
  #endif
  	alloc_globals->mm_heap = zend_mm_init();
  }
  
  #ifdef ZTS
  static void alloc_globals_dtor(zend_alloc_globals *alloc_globals TSRMLS_DC)
  {
  	shutdown_memory_manager(1, 1 TSRMLS_CC);
  }
  #endif
  
  ZEND_API void start_memory_manager(TSRMLS_D)
  {
  #ifdef ZTS
  	ts_allocate_id(&alloc_globals_id, sizeof(zend_alloc_globals), (ts_allocate_ctor) alloc_globals_ctor, (ts_allocate_dtor) alloc_globals_dtor);
  #else
  	alloc_globals_ctor(&alloc_globals);
  #endif
  }
  
  ZEND_API zend_mm_heap *zend_mm_set_heap(zend_mm_heap *new_heap TSRMLS_DC)
  {
  	zend_mm_heap *old_heap;
  
  	old_heap = AG(mm_heap);
  	AG(mm_heap) = (zend_mm_heap*)new_heap;
  	return (zend_mm_heap*)old_heap;
  }
  
  ZEND_API void zend_mm_set_custom_handlers(zend_mm_heap *heap,
                                            void* (*_malloc)(size_t),
                                            void  (*_free)(void*),
                                            void* (*_realloc)(void*, size_t))
  {
  #if ZEND_MM_CUSTOM
  	zend_mm_heap *_heap = (zend_mm_heap*)heap;
  
  	_heap->use_custom_heap = 1;
  	_heap->_malloc = _malloc;
  	_heap->_free = _free;
  	_heap->_realloc = _realloc;
  #endif
  }
  
  ZEND_API void zend_mm_get_custom_handlers(zend_mm_heap *heap,
                                            void* (**_malloc)(size_t),
                                            void  (**_free)(void*),
                                            void* (**_realloc)(void*, size_t))
  {
  #if ZEND_MM_CUSTOM
  	zend_mm_heap *_heap = (zend_mm_heap*)heap;
  
  	if (heap->use_custom_heap) {
  		*_malloc = _heap->_malloc;
  		*_free = _heap->_free;
  		*_realloc = _heap->_realloc;
  	} else {
  		*_malloc = NULL;
  		*_free = NULL;
  		*_realloc = NULL;
  	}
  #else
  	*_malloc = NULL;
  	*_free = NULL;
  	*_realloc = NULL;
  #endif
  }
  
  ZEND_API zend_mm_storage *zend_mm_get_storage(zend_mm_heap *heap)
  {
  #if ZEND_MM_CUSTOM
  	return heap->storage;
  #else
  	return NULL
  #endif
  }
  
  ZEND_API zend_mm_heap *zend_mm_startup(void)
  {
  	return zend_mm_init();
  }
  
  ZEND_API zend_mm_heap *zend_mm_startup_ex(zend_mm_storage *storage)
  {
  #if ZEND_MM_STORAGE
  	zend_mm_chunk *chunk = (zend_mm_chunk*)storage->chunk_alloc(storage, ZEND_MM_CHUNK_SIZE, ZEND_MM_CHUNK_SIZE);
  	zend_mm_heap *heap;
  
  	if (UNEXPECTED(chunk == NULL)) {
  #if ZEND_MM_ERROR
  #ifdef _WIN32
  		stderr_last_error("Can't initialize heap");
  #else
  		fprintf(stderr, "\nCan't initialize heap: [%d] %s\n", errno, strerror(errno));
  #endif
  #endif
  		return NULL;
  	}
  	heap = &chunk->heap_slot;
  	chunk->heap = heap;
  	chunk->next = chunk;
  	chunk->prev = chunk;
  	chunk->free_pages = ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE;
  	chunk->free_tail = ZEND_MM_FIRST_PAGE;
  	chunk->num = 0;
  	chunk->free_map[0] = (Z_L(1) << ZEND_MM_FIRST_PAGE) - 1;
  	chunk->map[0] = ZEND_MM_LRUN(ZEND_MM_FIRST_PAGE);
  	heap->main_chunk = chunk;
  	heap->cached_chunks = NULL;
  	heap->chunks_count = 1;
  	heap->peak_chunks_count = 1;
  	heap->cached_chunks_count = 0;
  	heap->avg_chunks_count = 1.0;
  #if ZEND_MM_STAT || ZEND_MM_LIMIT
  	heap->real_size = ZEND_MM_CHUNK_SIZE;
  #endif
  #if ZEND_MM_STAT
  	heap->real_peak = ZEND_MM_CHUNK_SIZE;
  	heap->size = 0;
  	heap->peak = 0;
  #endif
  #if ZEND_MM_LIMIT
  	heap->limit = (Z_L(-1) >> Z_L(1));
  	heap->overflow = 0;
  #endif
  #if ZEND_MM_CUSTOM
  	heap->use_custom_heap = 0;
  #endif
  	heap->storage = storage;
  	heap->huge_list = NULL;
  	return heap;
  #else
  	return NULL;
  #endif
  }
  
  /*
   * Local variables:
   * tab-width: 4
   * c-basic-offset: 4
   * indent-tabs-mode: t
   * End:
   */
  