#include "zend.h"
#include "zend_alloc.h"
#include "zend_globals.h"
#include "zend_operators.h"
#include "zend_multiply.h"
#include "zend_bitset.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
# if defined(_SC_PAGESIZE) || (_SC_PAGE_SIZE)
# define REAL_PAGE_SIZE _real_page_size
static size_t _real_page_size = ZEND_MM_PAGE_SIZE;
# endif
#endif
#ifndef REAL_PAGE_SIZE
# define REAL_PAGE_SIZE ZEND_MM_PAGE_SIZE
#endif
#ifndef ZEND_MM_STAT
# define ZEND_MM_STAT 1
#endif
#ifndef ZEND_MM_LIMIT
# define ZEND_MM_LIMIT 1
#endif
#ifndef ZEND_MM_CUSTOM
# define ZEND_MM_CUSTOM 1
#endif
#ifndef ZEND_MM_STORAGE
# define ZEND_MM_STORAGE 1
#endif
#ifndef ZEND_MM_ERROR
# define ZEND_MM_ERROR 1
#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;
typedef zend_ulong zend_mm_bitset;
#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_SIZE_TO_NUM(size, alignment) \
(((size_t)(size) + ((alignment) - 1)) / (alignment))
#define ZEND_MM_BITSET_LEN (sizeof(zend_mm_bitset) * 8)
#define ZEND_MM_PAGE_MAP_LEN (ZEND_MM_PAGES / ZEND_MM_BITSET_LEN)
typedef zend_mm_bitset zend_mm_page_map[ZEND_MM_PAGE_MAP_LEN];
#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_SRUN_FREE_COUNTER_MASK 0x01ff0000
#define ZEND_MM_SRUN_FREE_COUNTER_OFFSET 16
#define ZEND_MM_NRUN_OFFSET_MASK 0x01ff0000
#define ZEND_MM_NRUN_OFFSET_OFFSET 16
#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_SRUN_FREE_COUNTER(info) (((info) & ZEND_MM_SRUN_FREE_COUNTER_MASK) >> ZEND_MM_SRUN_FREE_COUNTER_OFFSET)
#define ZEND_MM_NRUN_OFFSET(info) (((info) & ZEND_MM_NRUN_OFFSET_MASK) >> ZEND_MM_NRUN_OFFSET_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_SRUN_EX(bin_num, count) (ZEND_MM_IS_SRUN | ((bin_num) << ZEND_MM_SRUN_BIN_NUM_OFFSET) | ((count) << ZEND_MM_SRUN_FREE_COUNTER_OFFSET))
#define ZEND_MM_NRUN(bin_num, offset) (ZEND_MM_IS_SRUN | ZEND_MM_IS_LRUN | ((bin_num) << ZEND_MM_SRUN_BIN_NUM_OFFSET) | ((offset) << ZEND_MM_NRUN_OFFSET_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 MAP_HUGETLB
int zend_mm_use_huge_pages = 0;
#endif
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;
size_t peak;
#endif
zend_mm_free_slot *free_slot[ZEND_MM_BINS];
#if ZEND_MM_STAT || ZEND_MM_LIMIT
size_t real_size;
#endif
#if ZEND_MM_STAT
size_t real_peak;
#endif
#if ZEND_MM_LIMIT
size_t limit;
int overflow;
#endif
zend_mm_huge_list *huge_list;
zend_mm_chunk *main_chunk;
zend_mm_chunk *cached_chunks;
int chunks_count;
int peak_chunks_count;
int cached_chunks_count;
double avg_chunks_count;
int last_chunks_delete_boundary;
int last_chunks_delete_count;
#if ZEND_MM_CUSTOM
union {
struct {
void *(*_malloc)(size_t);
void (*_free)(void*);
void *(*_realloc)(void*, size_t);
} std;
struct {
void *(*_malloc)(size_t ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
void (*_free)(void* ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
void *(*_realloc)(void*, size_t ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
} debug;
} custom_heap;
#endif
};
struct _zend_mm_chunk {
zend_mm_heap *heap;
zend_mm_chunk *next;
zend_mm_chunk *prev;
uint32_t free_pages;
uint32_t free_tail;
uint32_t num;
char reserve[64 - (sizeof(void*) * 3 + sizeof(uint32_t) * 3)];
zend_mm_heap heap_slot;
zend_mm_page_map free_map;
zend_mm_page_info map[ZEND_MM_PAGES];
};
struct _zend_mm_page {
char bytes[ZEND_MM_PAGE_SIZE];
};
struct _zend_mm_bin {
char bytes[ZEND_MM_PAGE_SIZE * 8];
};
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 uint32_t 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 uint32_t bin_elements[] = {
ZEND_MM_BINS_INFO(_BIN_DATA_ELEMENTS, x, y)
};
#define _BIN_DATA_PAGES(num, size, elements, pages, x, y) pages,
static const uint32_t bin_pages[] = {
ZEND_MM_BINS_INFO(_BIN_DATA_PAGES, x, y)
};
#if ZEND_DEBUG
ZEND_COLD 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_COLD ZEND_NORETURN void zend_mm_panic(const char *message)
{
fprintf(stderr, "%s\n", message);
#ifdef ZEND_WIN32
fflush(stderr);
#endif
#if ZEND_DEBUG && defined(HAVE_KILL) && defined(HAVE_GETPID)
kill(getpid(), SIGSEGV);
#endif
exit(1);
}
static ZEND_COLD 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)
{
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%08lx]\n", msg, err);
}
else {
fprintf(stderr, "\n%s: [0x%08lx] %s\n", msg, err, buf);
}
}
#endif
static void *zend_mm_mmap_fixed(void *addr, size_t size)
{
#ifdef _WIN32
return VirtualAlloc(addr, size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
#else
void *ptr = mmap(addr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON , -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;
#ifdef MAP_HUGETLB
if (zend_mm_use_huge_pages && size == ZEND_MM_CHUNK_SIZE) {
ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON | MAP_HUGETLB, -1, 0);
if (ptr != MAP_FAILED) {
return ptr;
}
}
#endif
ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -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
}
static zend_always_inline int zend_mm_bitset_nts(zend_mm_bitset bitset)
{
#if (defined(__GNUC__) || __has_builtin(__builtin_ctzl)) && SIZEOF_ZEND_LONG == SIZEOF_LONG && defined(PHP_HAVE_BUILTIN_CTZL)
return __builtin_ctzl(~bitset);
#elif (defined(__GNUC__) || __has_builtin(__builtin_ctzll)) && defined(PHP_HAVE_BUILTIN_CTZLL)
return __builtin_ctzll(~bitset);
#elif defined(_WIN32)
unsigned long index;
#if defined(_WIN64)
if (!BitScanForward64(&index, ~bitset)) {
#else
if (!BitScanForward(&index, ~bitset)) {
#endif
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
}
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_ulong_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) {
tmp = (zend_mm_bitset)-1 << bit;
bitset[pos++] |= tmp;
while (pos != end) {
bitset[pos++] = (zend_mm_bitset)-1;
}
end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
tmp = (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
bitset[pos] |= tmp;
} else {
end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
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) {
tmp = ~((Z_L(1) << bit) - 1);
bitset[pos++] &= ~tmp;
while (pos != end) {
bitset[pos++] = 0;
}
end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
tmp = (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
bitset[pos] &= ~tmp;
} else {
end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
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) {
tmp = (zend_mm_bitset)-1 << bit;
if ((bitset[pos++] & tmp) != 0) {
return 0;
}
while (pos != end) {
if (bitset[pos++] != 0) {
return 0;
}
}
end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
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);
tmp = (zend_mm_bitset)-1 << bit;
tmp &= (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
return (bitset[pos] & tmp) == 0;
}
}
}
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;
zend_mm_munmap(ptr, size);
ptr = zend_mm_mmap(size + alignment - REAL_PAGE_SIZE);
#ifdef _WIN32
offset = ZEND_MM_ALIGNED_OFFSET(ptr, alignment);
zend_mm_munmap(ptr, size + alignment - REAL_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;
alignment -= offset;
}
if (alignment > REAL_PAGE_SIZE) {
zend_mm_munmap((char*)ptr + size, alignment - REAL_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->handlers.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->handlers.chunk_free(heap->storage, addr, size);
return;
}
#endif
zend_mm_munmap(addr, size);
}
static int 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)) {
if (heap->storage->handlers.chunk_truncate) {
return heap->storage->handlers.chunk_truncate(heap->storage, addr, old_size, new_size);
} else {
return 0;
}
}
#endif
#ifndef _WIN32
zend_mm_munmap((char*)addr + new_size, old_size - new_size);
return 1;
#else
return 0;
#endif
}
static int zend_mm_chunk_extend(zend_mm_heap *heap, void *addr, size_t old_size, size_t new_size)
{
#if ZEND_MM_STORAGE
if (UNEXPECTED(heap->storage)) {
if (heap->storage->handlers.chunk_extend) {
return heap->storage->handlers.chunk_extend(heap->storage, addr, old_size, new_size);
} else {
return 0;
}
}
#endif
#ifndef _WIN32
return (zend_mm_mmap_fixed((char*)addr + old_size, new_size - old_size) != NULL);
#else
return 0;
#endif
}
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;
chunk->free_pages = ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE;
chunk->free_tail = ZEND_MM_FIRST_PAGE;
chunk->num = chunk->prev->num + 1;
chunk->free_map[0] = (1L << ZEND_MM_FIRST_PAGE) - 1;
chunk->map[0] = ZEND_MM_LRUN(ZEND_MM_FIRST_PAGE);
}
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
#if ZEND_DEBUG
static void *zend_mm_alloc_pages(zend_mm_heap *heap, uint32_t 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, uint32_t pages_count ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
#endif
{
zend_mm_chunk *chunk = heap->main_chunk;
uint32_t page_num, len;
int steps = 0;
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) {
int free_tail = chunk->free_tail;
zend_mm_bitset *bitset = chunk->free_map;
zend_mm_bitset tmp = *(bitset++);
int i = 0;
while (1) {
while (tmp == (zend_mm_bitset)-1) {
i += ZEND_MM_BITSET_LEN;
if (i == ZEND_MM_PAGES) {
goto not_found;
}
tmp = *(bitset++);
}
page_num = i + zend_mm_bitset_nts(tmp);
tmp &= tmp + 1;
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++);
}
len = (i + zend_ulong_ntz(tmp)) - page_num;
if (len >= pages_count) {
goto found;
}
tmp |= tmp - 1;
}
#endif
} else {
int best = -1;
uint32_t best_len = ZEND_MM_PAGES;
uint32_t free_tail = chunk->free_tail;
zend_mm_bitset *bitset = chunk->free_map;
zend_mm_bitset tmp = *(bitset++);
uint32_t i = 0;
while (1) {
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++);
}
page_num = i + zend_mm_bitset_nts(tmp);
tmp &= tmp + 1;
while (tmp == 0) {
i += ZEND_MM_BITSET_LEN;
if (i >= free_tail || i == ZEND_MM_PAGES) {
len = ZEND_MM_PAGES - page_num;
if (len >= pages_count && len < best_len) {
chunk->free_tail = page_num + pages_count;
goto found;
} else {
chunk->free_tail = page_num;
if (best > 0) {
page_num = best;
goto found;
} else {
goto not_found;
}
}
}
tmp = *(bitset++);
}
len = i + zend_ulong_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;
}
}
tmp |= tmp - 1;
}
}
not_found:
if (chunk->next == heap->main_chunk) {
get_chunk:
if (heap->cached_chunks) {
heap->cached_chunks_count--;
chunk = heap->cached_chunks;
heap->cached_chunks = chunk->next;
} else {
#if ZEND_MM_LIMIT
if (UNEXPECTED(heap->real_size + ZEND_MM_CHUNK_SIZE > heap->limit)) {
if (zend_mm_gc(heap)) {
goto get_chunk;
} else 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)) {
if (zend_mm_gc(heap) &&
(chunk = (zend_mm_chunk*)zend_mm_chunk_alloc(heap, ZEND_MM_CHUNK_SIZE, ZEND_MM_CHUNK_SIZE)) != NULL) {
} else {
#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;
steps++;
}
}
found:
if (steps > 2 && pages_count < 8) {
chunk->prev->next = chunk->next;
chunk->next->prev = chunk->prev;
chunk->next = heap->main_chunk->next;
chunk->prev = heap->main_chunk;
chunk->prev->next = chunk;
chunk->next->prev = chunk;
}
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 zend_always_inline void zend_mm_delete_chunk(zend_mm_heap *heap, zend_mm_chunk *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
|| (heap->chunks_count == heap->last_chunks_delete_boundary
&& heap->last_chunks_delete_count >= 4)) {
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) {
if (heap->chunks_count != heap->last_chunks_delete_boundary) {
heap->last_chunks_delete_boundary = heap->chunks_count;
heap->last_chunks_delete_count = 0;
} else {
heap->last_chunks_delete_count++;
}
}
if (!heap->cached_chunks || chunk->num > heap->cached_chunks->num) {
zend_mm_chunk_free(heap, chunk, ZEND_MM_CHUNK_SIZE);
} else {
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_pages_ex(zend_mm_heap *heap, zend_mm_chunk *chunk, uint32_t page_num, uint32_t pages_count, int free_chunk)
{
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) {
chunk->free_tail = page_num;
}
if (free_chunk && chunk->free_pages == ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE) {
zend_mm_delete_chunk(heap, chunk);
}
}
static void zend_mm_free_pages(zend_mm_heap *heap, zend_mm_chunk *chunk, int page_num, int pages_count)
{
zend_mm_free_pages_ex(heap, chunk, page_num, pages_count, 1);
}
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);
}
static zend_always_inline int zend_mm_small_size_to_bit(int size)
{
#if (defined(__GNUC__) || __has_builtin(__builtin_clz)) && defined(PHP_HAVE_BUILTIN_CLZ)
return (__builtin_clz(size) ^ 0x1f) + 1;
#elif defined(_WIN32)
unsigned long index;
if (!BitScanReverse(&index, (unsigned long)size)) {
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;
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
unsigned int t1, t2;
if (size <= 64) {
return (size - !!size) >> 3;
} else {
t1 = size - 1;
t2 = zend_mm_small_size_to_bit(t1) - 3;
t1 = t1 >> t2;
t2 = t2 - 3;
t2 = t2 << 2;
return (int)(t1 + t2);
}
#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, uint32_t 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)) {
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) {
uint32_t i = 1;
do {
chunk->map[page_num+i] = ZEND_MM_NRUN(bin_num, i);
i++;
} while (i < bin_pages[bin_num]);
}
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);
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 (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;
}
#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 {
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;
size = MAX(size, 1);
size = ZEND_MM_ALIGNED_SIZE(size) + ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info));
if (UNEXPECTED(size < real_size)) {
zend_error_noreturn(E_ERROR, "Possible integer overflow in memory allocation (%zu + %zu)", ZEND_MM_ALIGNED_SIZE(real_size), ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
return NULL;
}
#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 {
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 {
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, size_t copy_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
#ifdef ZEND_WIN32
new_size = ZEND_MM_ALIGNED_SIZE_EX(size, MAX(REAL_PAGE_SIZE, ZEND_MM_CHUNK_SIZE));
#else
new_size = ZEND_MM_ALIGNED_SIZE_EX(size, REAL_PAGE_SIZE);
#endif
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;
} else if (new_size < old_size) {
if (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 ZEND_MM_LIMIT
if (UNEXPECTED(heap->real_size + (new_size - old_size) > heap->limit)) {
if (zend_mm_gc(heap) && heap->real_size + (new_size - old_size) <= heap->limit) {
} else 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
if (zend_mm_chunk_extend(heap, ptr, old_size, new_size)) {
#if ZEND_MM_STAT || ZEND_MM_LIMIT
heap->real_size += new_size - old_size;
#endif
#if ZEND_MM_STAT
heap->real_peak = MAX(heap->real_peak, heap->real_size);
heap->size += new_size - old_size;
heap->peak = MAX(heap->peak, heap->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 {
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 = ZEND_MM_SRUN_BIN_NUM(info);
old_size = bin_data_size[old_bin_num];
if (size <= ZEND_MM_MAX_SMALL_SIZE) {
int 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 {
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) {
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 {
int new_pages_count = (int)(new_size / ZEND_MM_PAGE_SIZE);
int old_pages_count = (int)(old_size / ZEND_MM_PAGE_SIZE);
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
}
#if ZEND_MM_STAT
do {
size_t orig_peak = heap->peak;
size_t orig_real_peak = heap->real_peak;
#endif
ret = zend_mm_alloc_heap(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
memcpy(ret, ptr, MIN(old_size, copy_size));
zend_mm_free_heap(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
#if ZEND_MM_STAT
heap->peak = MAX(orig_peak, heap->size);
heap->real_peak = MAX(orig_real_peak, heap->real_size);
} while (0);
#endif
return ret;
}
#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)
{
#ifdef ZEND_WIN32
size_t new_size = ZEND_MM_ALIGNED_SIZE_EX(size, MAX(REAL_PAGE_SIZE, ZEND_MM_CHUNK_SIZE));
#else
size_t new_size = ZEND_MM_ALIGNED_SIZE_EX(size, REAL_PAGE_SIZE);
#endif
void *ptr;
#if ZEND_MM_LIMIT
if (UNEXPECTED(heap->real_size + new_size > heap->limit)) {
if (zend_mm_gc(heap) && heap->real_size + new_size <= heap->limit) {
} else 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)) {
if (zend_mm_gc(heap) &&
(ptr = zend_mm_chunk_alloc(heap, new_size, ZEND_MM_CHUNK_SIZE)) != NULL) {
} else {
#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
}
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;
heap->last_chunks_delete_boundary = 0;
heap->last_chunks_delete_count = 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 = ((size_t)Z_L(-1) >> (size_t)Z_L(1));
heap->overflow = 0;
#endif
#if ZEND_MM_CUSTOM
heap->use_custom_heap = ZEND_MM_CUSTOM_HEAP_NONE;
#endif
#if ZEND_MM_STORAGE
heap->storage = NULL;
#endif
heap->huge_list = NULL;
return heap;
}
ZEND_API size_t zend_mm_gc(zend_mm_heap *heap)
{
zend_mm_free_slot *p, **q;
zend_mm_chunk *chunk;
size_t page_offset;
int page_num;
zend_mm_page_info info;
uint32_t i, free_counter;
int has_free_pages;
size_t collected = 0;
#if ZEND_MM_CUSTOM
if (heap->use_custom_heap) {
return 0;
}
#endif
for (i = 0; i < ZEND_MM_BINS; i++) {
has_free_pages = 0;
p = heap->free_slot[i];
while (p != NULL) {
chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(p, ZEND_MM_CHUNK_SIZE);
ZEND_MM_CHECK(chunk->heap == heap, "zend_mm_heap corrupted");
page_offset = ZEND_MM_ALIGNED_OFFSET(p, ZEND_MM_CHUNK_SIZE);
ZEND_ASSERT(page_offset != 0);
page_num = (int)(page_offset / ZEND_MM_PAGE_SIZE);
info = chunk->map[page_num];
ZEND_ASSERT(info & ZEND_MM_IS_SRUN);
if (info & ZEND_MM_IS_LRUN) {
page_num -= ZEND_MM_NRUN_OFFSET(info);
info = chunk->map[page_num];
ZEND_ASSERT(info & ZEND_MM_IS_SRUN);
ZEND_ASSERT(!(info & ZEND_MM_IS_LRUN));
}
ZEND_ASSERT(ZEND_MM_SRUN_BIN_NUM(info) == i);
free_counter = ZEND_MM_SRUN_FREE_COUNTER(info) + 1;
if (free_counter == bin_elements[i]) {
has_free_pages = 1;
}
chunk->map[page_num] = ZEND_MM_SRUN_EX(i, free_counter);;
p = p->next_free_slot;
}
if (!has_free_pages) {
continue;
}
q = &heap->free_slot[i];
p = *q;
while (p != NULL) {
chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(p, ZEND_MM_CHUNK_SIZE);
ZEND_MM_CHECK(chunk->heap == heap, "zend_mm_heap corrupted");
page_offset = ZEND_MM_ALIGNED_OFFSET(p, ZEND_MM_CHUNK_SIZE);
ZEND_ASSERT(page_offset != 0);
page_num = (int)(page_offset / ZEND_MM_PAGE_SIZE);
info = chunk->map[page_num];
ZEND_ASSERT(info & ZEND_MM_IS_SRUN);
if (info & ZEND_MM_IS_LRUN) {
page_num -= ZEND_MM_NRUN_OFFSET(info);
info = chunk->map[page_num];
ZEND_ASSERT(info & ZEND_MM_IS_SRUN);
ZEND_ASSERT(!(info & ZEND_MM_IS_LRUN));
}
ZEND_ASSERT(ZEND_MM_SRUN_BIN_NUM(info) == i);
if (ZEND_MM_SRUN_FREE_COUNTER(info) == bin_elements[i]) {
p = p->next_free_slot;;
*q = p;
} else {
q = &p->next_free_slot;
p = *q;
}
}
}
chunk = heap->main_chunk;
do {
i = ZEND_MM_FIRST_PAGE;
while (i < chunk->free_tail) {
if (zend_mm_bitset_is_set(chunk->free_map, i)) {
info = chunk->map[i];
if (info & ZEND_MM_IS_SRUN) {
int bin_num = ZEND_MM_SRUN_BIN_NUM(info);
int pages_count = bin_pages[bin_num];
if (ZEND_MM_SRUN_FREE_COUNTER(info) == bin_elements[bin_num]) {
zend_mm_free_pages_ex(heap, chunk, i, pages_count, 0);
collected += pages_count;
} else {
chunk->map[i] = ZEND_MM_SRUN(bin_num);
}
i += bin_pages[bin_num];
} else {
i += ZEND_MM_LRUN_PAGES(info);
}
} else {
i++;
}
}
if (chunk->free_pages == ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE) {
zend_mm_chunk *next_chunk = chunk->next;
zend_mm_delete_chunk(heap, chunk);
chunk = next_chunk;
} else {
chunk = chunk->next;
}
} while (chunk != heap->main_chunk);
return collected * ZEND_MM_PAGE_SIZE;
}
#if ZEND_DEBUG
static zend_long zend_mm_find_leaks_small(zend_mm_chunk *p, uint32_t i, uint32_t 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, uint32_t 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 {
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 zend_long zend_mm_find_leaks_huge(zend_mm_heap *heap, zend_mm_huge_list *list)
{
zend_long count = 0;
zend_mm_huge_list *prev = list;
zend_mm_huge_list *p = list->next;
while (p) {
if (p->dbg.filename == list->dbg.filename && p->dbg.lineno == list->dbg.lineno) {
prev->next = p->next;
zend_mm_chunk_free(heap, p->ptr, p->size);
zend_mm_free_heap(heap, p, NULL, 0, NULL, 0);
count++;
} else {
prev = p;
}
p = prev->next;
}
return count;
}
static void zend_mm_check_leaks(zend_mm_heap *heap)
{
zend_mm_huge_list *list;
zend_mm_chunk *p;
zend_leak_info leak;
zend_long repeated = 0;
uint32_t total = 0;
uint32_t i, j;
list = heap->huge_list;
while (list) {
zend_mm_huge_list *q = list;
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);
zend_message_dispatcher(ZMSG_MEMORY_LEAK_DETECTED, &leak);
repeated = zend_mm_find_leaks_huge(heap, list);
total += 1 + repeated;
if (repeated) {
zend_message_dispatcher(ZMSG_MEMORY_LEAK_REPEATED, (void *)(zend_uintptr_t)repeated);
}
heap->huge_list = list = list->next;
zend_mm_chunk_free(heap, q->ptr, q->size);
zend_mm_free_heap(heap, q, NULL, 0, NULL, 0);
}
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);
zend_message_dispatcher(ZMSG_MEMORY_LEAK_DETECTED, &leak);
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);
}
}
dbg = (zend_mm_debug_info*)((char*)dbg + bin_data_size[bin_num]);
j++;
}
i += bin_pages[bin_num];
} else {
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);
zend_message_dispatcher(ZMSG_MEMORY_LEAK_DETECTED, &leak);
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);
}
i += pages_count;
}
} else {
i++;
}
}
p = p->next;
} while (p != heap->main_chunk);
if (total) {
zend_message_dispatcher(ZMSG_MEMORY_LEAKS_GRAND_TOTAL, &total);
}
}
#endif
void zend_mm_shutdown(zend_mm_heap *heap, int full, int silent)
{
zend_mm_chunk *p;
zend_mm_huge_list *list;
#if ZEND_MM_CUSTOM
if (heap->use_custom_heap) {
if (full) {
if (ZEND_DEBUG && heap->use_custom_heap == ZEND_MM_CUSTOM_HEAP_DEBUG) {
heap->custom_heap.debug._free(heap ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC);
} else {
heap->custom_heap.std._free(heap);
}
}
return;
}
#endif
#if ZEND_DEBUG
if (!silent) {
zend_mm_check_leaks(heap);
}
#endif
list = heap->huge_list;
heap->huge_list = NULL;
while (list) {
zend_mm_huge_list *q = list;
list = list->next;
zend_mm_chunk_free(heap, q->ptr, q->size);
}
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) {
while (heap->cached_chunks) {
p = heap->cached_chunks;
heap->cached_chunks = p->next;
zend_mm_chunk_free(heap, p, ZEND_MM_CHUNK_SIZE);
}
zend_mm_chunk_free(heap, heap->main_chunk, ZEND_MM_CHUNK_SIZE);
} else {
zend_mm_heap old_heap;
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--;
}
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;
}
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;
heap->last_chunks_delete_boundary = 0;
heap->last_chunks_delete_count = 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 = heap->peak = 0;
#endif
}
}
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, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
void* ZEND_FASTCALL _zend_mm_realloc2(zend_mm_heap *heap, void *ptr, size_t size, size_t copy_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
return zend_mm_realloc_heap(heap, ptr, size, copy_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);
}
typedef struct _zend_alloc_globals {
zend_mm_heap *mm_heap;
} zend_alloc_globals;
#ifdef ZTS
static int alloc_globals_id;
# define AG(v) ZEND_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(void)
{
#if ZEND_MM_CUSTOM
return !AG(mm_heap)->use_custom_heap;
#else
return 1;
#endif
}
#if !ZEND_DEBUG && defined(HAVE_BUILTIN_CONSTANT_P)
#undef _emalloc
#if ZEND_MM_CUSTOM
# define ZEND_MM_CUSTOM_ALLOCATOR(size) do { \
if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) { \
if (ZEND_DEBUG && AG(mm_heap)->use_custom_heap == ZEND_MM_CUSTOM_HEAP_DEBUG) { \
return AG(mm_heap)->custom_heap.debug._malloc(size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC); \
} else { \
return AG(mm_heap)->custom_heap.std._malloc(size); \
} \
} \
} while (0)
# define ZEND_MM_CUSTOM_DEALLOCATOR(ptr) do { \
if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) { \
if (ZEND_DEBUG && AG(mm_heap)->use_custom_heap == ZEND_MM_CUSTOM_HEAP_DEBUG) { \
AG(mm_heap)->custom_heap.debug._free(ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC); \
} else { \
AG(mm_heap)->custom_heap.std._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) { \
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)
{
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)
{
ZEND_MM_CUSTOM_ALLOCATOR(size);
return zend_mm_alloc_huge(AG(mm_heap), size);
}
#if ZEND_DEBUG
# define _ZEND_BIN_FREE(_num, _size, _elements, _pages, x, y) \
ZEND_API void ZEND_FASTCALL _efree_ ## _size(void *ptr) { \
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); \
} \
}
#else
# define _ZEND_BIN_FREE(_num, _size, _elements, _pages, x, y) \
ZEND_API void ZEND_FASTCALL _efree_ ## _size(void *ptr) { \
ZEND_MM_CUSTOM_DEALLOCATOR(ptr); \
{ \
zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE); \
ZEND_MM_CHECK(chunk->heap == AG(mm_heap), "zend_mm_heap corrupted"); \
zend_mm_free_small(AG(mm_heap), ptr, _num); \
} \
}
#endif
ZEND_MM_BINS_INFO(_ZEND_BIN_FREE, x, y)
ZEND_API void ZEND_FASTCALL _efree_large(void *ptr, size_t size)
{
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;
uint32_t 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)
{
ZEND_MM_CUSTOM_DEALLOCATOR(ptr);
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)
{
#if ZEND_MM_CUSTOM
if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
if (ZEND_DEBUG && AG(mm_heap)->use_custom_heap == ZEND_MM_CUSTOM_HEAP_DEBUG) {
return AG(mm_heap)->custom_heap.debug._malloc(size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
} else {
return AG(mm_heap)->custom_heap.std._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)
{
#if ZEND_MM_CUSTOM
if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
if (ZEND_DEBUG && AG(mm_heap)->use_custom_heap == ZEND_MM_CUSTOM_HEAP_DEBUG) {
AG(mm_heap)->custom_heap.debug._free(ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
} else {
AG(mm_heap)->custom_heap.std._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 ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
if (ZEND_DEBUG && AG(mm_heap)->use_custom_heap == ZEND_MM_CUSTOM_HEAP_DEBUG) {
return AG(mm_heap)->custom_heap.debug._realloc(ptr, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
} else {
return AG(mm_heap)->custom_heap.std._realloc(ptr, size);
}
}
return zend_mm_realloc_heap(AG(mm_heap), ptr, size, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
ZEND_API void* ZEND_FASTCALL _erealloc2(void *ptr, size_t size, size_t copy_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
if (ZEND_DEBUG && AG(mm_heap)->use_custom_heap == ZEND_MM_CUSTOM_HEAP_DEBUG) {
return AG(mm_heap)->custom_heap.debug._realloc(ptr, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
} else {
return AG(mm_heap)->custom_heap.std._realloc(ptr, size);
}
}
return zend_mm_realloc_heap(AG(mm_heap), ptr, size, copy_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
ZEND_API size_t ZEND_FASTCALL _zend_mem_block_size(void *ptr 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);
}
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(zend_safe_address_guarded(nmemb, size, offset));
}
ZEND_API void* ZEND_FASTCALL _safe_malloc(size_t nmemb, size_t size, size_t offset)
{
return pemalloc(zend_safe_address_guarded(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, zend_safe_address_guarded(nmemb, size, offset));
}
ZEND_API void* ZEND_FASTCALL _safe_realloc(void *ptr, size_t nmemb, size_t size, size_t offset)
{
return perealloc(ptr, zend_safe_address_guarded(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;
p = _safe_emalloc(nmemb, size, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
if (UNEXPECTED(p == NULL)) {
return p;
}
memset(p, 0, size * nmemb);
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;
length = strlen(s);
if (UNEXPECTED(length + 1 == 0)) {
zend_error_noreturn(E_ERROR, "Possible integer overflow in memory allocation (1 * %zu + 1)", length);
}
p = (char *) _emalloc(length + 1 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
if (UNEXPECTED(p == NULL)) {
return p;
}
memcpy(p, s, length+1);
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;
if (UNEXPECTED(length + 1 == 0)) {
zend_error_noreturn(E_ERROR, "Possible integer overflow in memory allocation (1 * %zu + 1)", length);
}
p = (char *) _emalloc(length + 1 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
if (UNEXPECTED(p == NULL)) {
return p;
}
memcpy(p, s, length);
p[length] = 0;
return p;
}
ZEND_API char* ZEND_FASTCALL zend_strndup(const char *s, size_t length)
{
char *p;
if (UNEXPECTED(length + 1 == 0)) {
zend_error_noreturn(E_ERROR, "Possible integer overflow in memory allocation (1 * %zu + 1)", length);
}
p = (char *) malloc(length + 1);
if (UNEXPECTED(p == NULL)) {
return p;
}
if (EXPECTED(length)) {
memcpy(p, s, length);
}
p[length] = 0;
return p;
}
ZEND_API int zend_set_memory_limit(size_t memory_limit)
{
#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)
{
#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)
{
#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)
{
zend_mm_shutdown(AG(mm_heap), full_shutdown, silent);
}
static void alloc_globals_ctor(zend_alloc_globals *alloc_globals)
{
#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 = ZEND_MM_CUSTOM_HEAP_STD;
alloc_globals->mm_heap->custom_heap.std._malloc = __zend_malloc;
alloc_globals->mm_heap->custom_heap.std._free = free;
alloc_globals->mm_heap->custom_heap.std._realloc = __zend_realloc;
return;
}
#endif
#ifdef MAP_HUGETLB
tmp = getenv("USE_ZEND_ALLOC_HUGE_PAGES");
if (tmp && zend_atoi(tmp, 0)) {
zend_mm_use_huge_pages = 1;
}
#endif
ZEND_TSRMLS_CACHE_UPDATE();
alloc_globals->mm_heap = zend_mm_init();
}
#ifdef ZTS
static void alloc_globals_dtor(zend_alloc_globals *alloc_globals)
{
zend_mm_shutdown(alloc_globals->mm_heap, 1, 1);
}
#endif
ZEND_API void start_memory_manager(void)
{
#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
#ifndef _WIN32
# if defined(_SC_PAGESIZE)
REAL_PAGE_SIZE = sysconf(_SC_PAGESIZE);
# elif defined(_SC_PAGE_SIZE)
REAL_PAGE_SIZE = sysconf(_SC_PAGE_SIZE);
# endif
#endif
}
ZEND_API zend_mm_heap *zend_mm_set_heap(zend_mm_heap *new_heap)
{
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 zend_mm_heap *zend_mm_get_heap(void)
{
return AG(mm_heap);
}
ZEND_API int zend_mm_is_custom_heap(zend_mm_heap *new_heap)
{
#if ZEND_MM_CUSTOM
return AG(mm_heap)->use_custom_heap;
#else
return 0;
#endif
}
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 = ZEND_MM_CUSTOM_HEAP_STD;
_heap->custom_heap.std._malloc = _malloc;
_heap->custom_heap.std._free = _free;
_heap->custom_heap.std._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->custom_heap.std._malloc;
*_free = _heap->custom_heap.std._free;
*_realloc = _heap->custom_heap.std._realloc;
} else {
*_malloc = NULL;
*_free = NULL;
*_realloc = NULL;
}
#else
*_malloc = NULL;
*_free = NULL;
*_realloc = NULL;
#endif
}
#if ZEND_DEBUG
ZEND_API void zend_mm_set_custom_debug_handlers(zend_mm_heap *heap,
void* (*_malloc)(size_t ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC),
void (*_free)(void* ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC),
void* (*_realloc)(void*, size_t ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC))
{
#if ZEND_MM_CUSTOM
zend_mm_heap *_heap = (zend_mm_heap*)heap;
_heap->use_custom_heap = ZEND_MM_CUSTOM_HEAP_DEBUG;
_heap->custom_heap.debug._malloc = _malloc;
_heap->custom_heap.debug._free = _free;
_heap->custom_heap.debug._realloc = _realloc;
#endif
}
#endif
ZEND_API zend_mm_storage *zend_mm_get_storage(zend_mm_heap *heap)
{
#if ZEND_MM_STORAGE
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(const zend_mm_handlers *handlers, void *data, size_t data_size)
{
#if ZEND_MM_STORAGE
zend_mm_storage tmp_storage, *storage;
zend_mm_chunk *chunk;
zend_mm_heap *heap;
memcpy((zend_mm_handlers*)&tmp_storage.handlers, handlers, sizeof(zend_mm_handlers));
tmp_storage.data = data;
chunk = (zend_mm_chunk*)handlers->chunk_alloc(&tmp_storage, ZEND_MM_CHUNK_SIZE, ZEND_MM_CHUNK_SIZE);
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;
heap->last_chunks_delete_boundary = 0;
heap->last_chunks_delete_count = 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 = &tmp_storage;
heap->huge_list = NULL;
memset(heap->free_slot, 0, sizeof(heap->free_slot));
storage = _zend_mm_alloc(heap, sizeof(zend_mm_storage) + data_size ZEND_FILE_LINE_CC ZEND_FILE_LINE_CC);
if (!storage) {
handlers->chunk_free(&tmp_storage, chunk, ZEND_MM_CHUNK_SIZE);
#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;
}
memcpy(storage, &tmp_storage, sizeof(zend_mm_storage));
if (data) {
storage->data = (void*)(((char*)storage + sizeof(zend_mm_storage)));
memcpy(storage->data, data, data_size);
}
heap->storage = storage;
return heap;
#else
return NULL;
#endif
}
static ZEND_COLD ZEND_NORETURN void zend_out_of_memory(void)
{
fprintf(stderr, "Out of memory\n");
exit(1);
}
ZEND_API void * __zend_malloc(size_t len)
{
void *tmp = malloc(len);
if (EXPECTED(tmp || !len)) {
return tmp;
}
zend_out_of_memory();
}
ZEND_API void * __zend_calloc(size_t nmemb, size_t len)
{
void *tmp = _safe_malloc(nmemb, len, 0);
memset(tmp, 0, nmemb * len);
return tmp;
}
ZEND_API void * __zend_realloc(void *p, size_t len)
{
p = realloc(p, len);
if (EXPECTED(p || !len)) {
return p;
}
zend_out_of_memory();
}