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Reformat malloc to gnu style.
This commit is contained in:
Ondřej Bílka
642
malloc/hooks.c
642
malloc/hooks.c
@ -24,29 +24,29 @@
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/* Hooks for debugging versions. The initial hooks just call the
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initialization routine, then do the normal work. */
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static void*
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malloc_hook_ini(size_t sz, const void *caller)
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static void *
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malloc_hook_ini (size_t sz, const void *caller)
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{
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__malloc_hook = NULL;
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ptmalloc_init();
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return __libc_malloc(sz);
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ptmalloc_init ();
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return __libc_malloc (sz);
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}
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static void*
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realloc_hook_ini(void* ptr, size_t sz, const void *caller)
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static void *
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realloc_hook_ini (void *ptr, size_t sz, const void *caller)
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{
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__malloc_hook = NULL;
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__realloc_hook = NULL;
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ptmalloc_init();
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return __libc_realloc(ptr, sz);
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ptmalloc_init ();
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return __libc_realloc (ptr, sz);
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}
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static void*
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memalign_hook_ini(size_t alignment, size_t sz, const void *caller)
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static void *
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memalign_hook_ini (size_t alignment, size_t sz, const void *caller)
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{
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__memalign_hook = NULL;
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ptmalloc_init();
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return __libc_memalign(alignment, sz);
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ptmalloc_init ();
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return __libc_memalign (alignment, sz);
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}
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/* Whether we are using malloc checking. */
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@ -71,10 +71,11 @@ static int disallow_malloc_check;
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void
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__malloc_check_init (void)
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{
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if (disallow_malloc_check) {
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disallow_malloc_check = 0;
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return;
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}
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if (disallow_malloc_check)
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{
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disallow_malloc_check = 0;
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return;
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}
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using_malloc_checking = 1;
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__malloc_hook = malloc_check;
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__free_hook = free_check;
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@ -87,7 +88,7 @@ __malloc_check_init (void)
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overruns. The goal here is to avoid obscure crashes due to invalid
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usage, unlike in the MALLOC_DEBUG code. */
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#define MAGICBYTE(p) ( ( ((size_t)p >> 3) ^ ((size_t)p >> 11)) & 0xFF )
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#define MAGICBYTE(p) ((((size_t) p >> 3) ^ ((size_t) p >> 11)) & 0xFF)
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/* Visualize the chunk as being partitioned into blocks of 256 bytes from the
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highest address of the chunk, downwards. The beginning of each block tells
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@ -96,53 +97,58 @@ __malloc_check_init (void)
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must reach it with this iteration, otherwise we have witnessed a memory
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corruption. */
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static size_t
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malloc_check_get_size(mchunkptr p)
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malloc_check_get_size (mchunkptr p)
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{
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size_t size;
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unsigned char c;
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unsigned char magic = MAGICBYTE(p);
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unsigned char magic = MAGICBYTE (p);
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assert(using_malloc_checking == 1);
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assert (using_malloc_checking == 1);
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for (size = chunksize(p) - 1 + (chunk_is_mmapped(p) ? 0 : SIZE_SZ);
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(c = ((unsigned char*)p)[size]) != magic;
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size -= c) {
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if(c<=0 || size<(c+2*SIZE_SZ)) {
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malloc_printerr(check_action, "malloc_check_get_size: memory corruption",
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chunk2mem(p));
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return 0;
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for (size = chunksize (p) - 1 + (chunk_is_mmapped (p) ? 0 : SIZE_SZ);
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(c = ((unsigned char *) p)[size]) != magic;
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size -= c)
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{
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if (c <= 0 || size < (c + 2 * SIZE_SZ))
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{
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malloc_printerr (check_action, "malloc_check_get_size: memory corruption",
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chunk2mem (p));
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return 0;
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}
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}
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}
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/* chunk2mem size. */
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return size - 2*SIZE_SZ;
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return size - 2 * SIZE_SZ;
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}
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/* Instrument a chunk with overrun detector byte(s) and convert it
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into a user pointer with requested size sz. */
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static void*
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static void *
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internal_function
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mem2mem_check(void *ptr, size_t sz)
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mem2mem_check (void *ptr, size_t sz)
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{
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mchunkptr p;
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unsigned char* m_ptr = ptr;
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unsigned char *m_ptr = ptr;
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size_t i;
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if (!ptr)
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return ptr;
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p = mem2chunk(ptr);
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for(i = chunksize(p) - (chunk_is_mmapped(p) ? 2*SIZE_SZ+1 : SIZE_SZ+1);
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i > sz;
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i -= 0xFF) {
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if(i-sz < 0x100) {
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m_ptr[i] = (unsigned char)(i-sz);
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break;
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p = mem2chunk (ptr);
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for (i = chunksize (p) - (chunk_is_mmapped (p) ? 2 * SIZE_SZ + 1 : SIZE_SZ + 1);
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i > sz;
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i -= 0xFF)
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{
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if (i - sz < 0x100)
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{
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m_ptr[i] = (unsigned char) (i - sz);
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break;
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}
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m_ptr[i] = 0xFF;
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}
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m_ptr[i] = 0xFF;
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}
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m_ptr[sz] = MAGICBYTE(p);
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return (void*)m_ptr;
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m_ptr[sz] = MAGICBYTE (p);
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return (void *) m_ptr;
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}
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/* Convert a pointer to be free()d or realloc()ed to a valid chunk
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@ -150,53 +156,64 @@ mem2mem_check(void *ptr, size_t sz)
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static mchunkptr
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internal_function
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mem2chunk_check(void* mem, unsigned char **magic_p)
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mem2chunk_check (void *mem, unsigned char **magic_p)
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{
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mchunkptr p;
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INTERNAL_SIZE_T sz, c;
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unsigned char magic;
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if(!aligned_OK(mem)) return NULL;
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p = mem2chunk(mem);
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if (!chunk_is_mmapped(p)) {
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/* Must be a chunk in conventional heap memory. */
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int contig = contiguous(&main_arena);
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sz = chunksize(p);
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if((contig &&
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((char*)p<mp_.sbrk_base ||
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((char*)p + sz)>=(mp_.sbrk_base+main_arena.system_mem) )) ||
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sz<MINSIZE || sz&MALLOC_ALIGN_MASK || !inuse(p) ||
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( !prev_inuse(p) && (p->prev_size&MALLOC_ALIGN_MASK ||
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(contig && (char*)prev_chunk(p)<mp_.sbrk_base) ||
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next_chunk(prev_chunk(p))!=p) ))
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return NULL;
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magic = MAGICBYTE(p);
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for(sz += SIZE_SZ-1; (c = ((unsigned char*)p)[sz]) != magic; sz -= c) {
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if(c<=0 || sz<(c+2*SIZE_SZ)) return NULL;
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}
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} else {
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unsigned long offset, page_mask = GLRO(dl_pagesize)-1;
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if (!aligned_OK (mem))
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return NULL;
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/* mmap()ed chunks have MALLOC_ALIGNMENT or higher power-of-two
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alignment relative to the beginning of a page. Check this
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first. */
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offset = (unsigned long)mem & page_mask;
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if((offset!=MALLOC_ALIGNMENT && offset!=0 && offset!=0x10 &&
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offset!=0x20 && offset!=0x40 && offset!=0x80 && offset!=0x100 &&
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offset!=0x200 && offset!=0x400 && offset!=0x800 && offset!=0x1000 &&
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offset<0x2000) ||
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!chunk_is_mmapped(p) || (p->size & PREV_INUSE) ||
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( (((unsigned long)p - p->prev_size) & page_mask) != 0 ) ||
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( (sz = chunksize(p)), ((p->prev_size + sz) & page_mask) != 0 ) )
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return NULL;
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magic = MAGICBYTE(p);
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for(sz -= 1; (c = ((unsigned char*)p)[sz]) != magic; sz -= c) {
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if(c<=0 || sz<(c+2*SIZE_SZ)) return NULL;
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p = mem2chunk (mem);
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if (!chunk_is_mmapped (p))
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{
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/* Must be a chunk in conventional heap memory. */
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int contig = contiguous (&main_arena);
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sz = chunksize (p);
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if ((contig &&
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((char *) p < mp_.sbrk_base ||
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((char *) p + sz) >= (mp_.sbrk_base + main_arena.system_mem))) ||
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sz < MINSIZE || sz & MALLOC_ALIGN_MASK || !inuse (p) ||
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(!prev_inuse (p) && (p->prev_size & MALLOC_ALIGN_MASK ||
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(contig && (char *) prev_chunk (p) < mp_.sbrk_base) ||
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next_chunk (prev_chunk (p)) != p)))
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return NULL;
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magic = MAGICBYTE (p);
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for (sz += SIZE_SZ - 1; (c = ((unsigned char *) p)[sz]) != magic; sz -= c)
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{
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if (c <= 0 || sz < (c + 2 * SIZE_SZ))
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return NULL;
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}
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}
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}
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((unsigned char*)p)[sz] ^= 0xFF;
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else
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{
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unsigned long offset, page_mask = GLRO (dl_pagesize) - 1;
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/* mmap()ed chunks have MALLOC_ALIGNMENT or higher power-of-two
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alignment relative to the beginning of a page. Check this
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first. */
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offset = (unsigned long) mem & page_mask;
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if ((offset != MALLOC_ALIGNMENT && offset != 0 && offset != 0x10 &&
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offset != 0x20 && offset != 0x40 && offset != 0x80 && offset != 0x100 &&
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offset != 0x200 && offset != 0x400 && offset != 0x800 && offset != 0x1000 &&
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offset < 0x2000) ||
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!chunk_is_mmapped (p) || (p->size & PREV_INUSE) ||
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((((unsigned long) p - p->prev_size) & page_mask) != 0) ||
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((sz = chunksize (p)), ((p->prev_size + sz) & page_mask) != 0))
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return NULL;
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magic = MAGICBYTE (p);
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for (sz -= 1; (c = ((unsigned char *) p)[sz]) != magic; sz -= c)
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{
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if (c <= 0 || sz < (c + 2 * SIZE_SZ))
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return NULL;
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}
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}
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((unsigned char *) p)[sz] ^= 0xFF;
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if (magic_p)
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*magic_p = (unsigned char *)p + sz;
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*magic_p = (unsigned char *) p + sz;
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return p;
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}
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@ -205,32 +222,32 @@ mem2chunk_check(void* mem, unsigned char **magic_p)
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static int
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internal_function
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top_check(void)
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top_check (void)
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{
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mchunkptr t = top(&main_arena);
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char* brk, * new_brk;
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mchunkptr t = top (&main_arena);
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char *brk, *new_brk;
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INTERNAL_SIZE_T front_misalign, sbrk_size;
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unsigned long pagesz = GLRO(dl_pagesize);
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unsigned long pagesz = GLRO (dl_pagesize);
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if (t == initial_top(&main_arena) ||
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(!chunk_is_mmapped(t) &&
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chunksize(t)>=MINSIZE &&
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prev_inuse(t) &&
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(!contiguous(&main_arena) ||
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(char*)t + chunksize(t) == mp_.sbrk_base + main_arena.system_mem)))
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if (t == initial_top (&main_arena) ||
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(!chunk_is_mmapped (t) &&
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chunksize (t) >= MINSIZE &&
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prev_inuse (t) &&
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(!contiguous (&main_arena) ||
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(char *) t + chunksize (t) == mp_.sbrk_base + main_arena.system_mem)))
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return 0;
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malloc_printerr (check_action, "malloc: top chunk is corrupt", t);
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/* Try to set up a new top chunk. */
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brk = MORECORE(0);
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front_misalign = (unsigned long)chunk2mem(brk) & MALLOC_ALIGN_MASK;
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brk = MORECORE (0);
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front_misalign = (unsigned long) chunk2mem (brk) & MALLOC_ALIGN_MASK;
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if (front_misalign > 0)
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front_misalign = MALLOC_ALIGNMENT - front_misalign;
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sbrk_size = front_misalign + mp_.top_pad + MINSIZE;
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sbrk_size += pagesz - ((unsigned long)(brk + sbrk_size) & (pagesz - 1));
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new_brk = (char*)(MORECORE (sbrk_size));
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if (new_brk == (char*)(MORECORE_FAILURE))
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sbrk_size += pagesz - ((unsigned long) (brk + sbrk_size) & (pagesz - 1));
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new_brk = (char *) (MORECORE (sbrk_size));
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if (new_brk == (char *) (MORECORE_FAILURE))
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{
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__set_errno (ENOMEM);
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return -1;
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@ -238,128 +255,148 @@ top_check(void)
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/* Call the `morecore' hook if necessary. */
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void (*hook) (void) = atomic_forced_read (__after_morecore_hook);
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if (hook)
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(*hook) ();
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(*hook)();
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main_arena.system_mem = (new_brk - mp_.sbrk_base) + sbrk_size;
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top(&main_arena) = (mchunkptr)(brk + front_misalign);
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set_head(top(&main_arena), (sbrk_size - front_misalign) | PREV_INUSE);
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top (&main_arena) = (mchunkptr) (brk + front_misalign);
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set_head (top (&main_arena), (sbrk_size - front_misalign) | PREV_INUSE);
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return 0;
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}
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static void*
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malloc_check(size_t sz, const void *caller)
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static void *
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malloc_check (size_t sz, const void *caller)
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{
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void *victim;
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if (sz+1 == 0) {
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__set_errno (ENOMEM);
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return NULL;
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}
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if (sz + 1 == 0)
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{
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__set_errno (ENOMEM);
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return NULL;
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}
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(void)mutex_lock(&main_arena.mutex);
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victim = (top_check() >= 0) ? _int_malloc(&main_arena, sz+1) : NULL;
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(void)mutex_unlock(&main_arena.mutex);
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return mem2mem_check(victim, sz);
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(void) mutex_lock (&main_arena.mutex);
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victim = (top_check () >= 0) ? _int_malloc (&main_arena, sz + 1) : NULL;
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(void) mutex_unlock (&main_arena.mutex);
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return mem2mem_check (victim, sz);
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}
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static void
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free_check(void* mem, const void *caller)
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free_check (void *mem, const void *caller)
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{
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mchunkptr p;
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if(!mem) return;
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(void)mutex_lock(&main_arena.mutex);
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p = mem2chunk_check(mem, NULL);
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if(!p) {
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(void)mutex_unlock(&main_arena.mutex);
|
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if (!mem)
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return;
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|
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malloc_printerr(check_action, "free(): invalid pointer", mem);
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return;
|
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}
|
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if (chunk_is_mmapped(p)) {
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(void)mutex_unlock(&main_arena.mutex);
|
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munmap_chunk(p);
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return;
|
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}
|
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_int_free(&main_arena, p, 1);
|
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(void)mutex_unlock(&main_arena.mutex);
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(void) mutex_lock (&main_arena.mutex);
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p = mem2chunk_check (mem, NULL);
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if (!p)
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{
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(void) mutex_unlock (&main_arena.mutex);
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malloc_printerr (check_action, "free(): invalid pointer", mem);
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return;
|
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}
|
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if (chunk_is_mmapped (p))
|
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{
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(void) mutex_unlock (&main_arena.mutex);
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munmap_chunk (p);
|
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return;
|
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}
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_int_free (&main_arena, p, 1);
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(void) mutex_unlock (&main_arena.mutex);
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}
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static void*
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realloc_check(void* oldmem, size_t bytes, const void *caller)
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static void *
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realloc_check (void *oldmem, size_t bytes, const void *caller)
|
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{
|
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INTERNAL_SIZE_T nb;
|
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void* newmem = 0;
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void *newmem = 0;
|
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unsigned char *magic_p;
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|
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if (bytes+1 == 0) {
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__set_errno (ENOMEM);
|
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return NULL;
|
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}
|
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if (oldmem == 0) return malloc_check(bytes, NULL);
|
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if (bytes == 0) {
|
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free_check (oldmem, NULL);
|
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return NULL;
|
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}
|
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(void)mutex_lock(&main_arena.mutex);
|
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const mchunkptr oldp = mem2chunk_check(oldmem, &magic_p);
|
||||
(void)mutex_unlock(&main_arena.mutex);
|
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if(!oldp) {
|
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malloc_printerr(check_action, "realloc(): invalid pointer", oldmem);
|
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return malloc_check(bytes, NULL);
|
||||
}
|
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const INTERNAL_SIZE_T oldsize = chunksize(oldp);
|
||||
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checked_request2size(bytes+1, nb);
|
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(void)mutex_lock(&main_arena.mutex);
|
||||
|
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if (chunk_is_mmapped(oldp)) {
|
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#if HAVE_MREMAP
|
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mchunkptr newp = mremap_chunk(oldp, nb);
|
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if(newp)
|
||||
newmem = chunk2mem(newp);
|
||||
else
|
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#endif
|
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if (bytes + 1 == 0)
|
||||
{
|
||||
/* Note the extra SIZE_SZ overhead. */
|
||||
if(oldsize - SIZE_SZ >= nb)
|
||||
newmem = oldmem; /* do nothing */
|
||||
else {
|
||||
/* Must alloc, copy, free. */
|
||||
if (top_check() >= 0)
|
||||
newmem = _int_malloc(&main_arena, bytes+1);
|
||||
if (newmem) {
|
||||
memcpy(newmem, oldmem, oldsize - 2*SIZE_SZ);
|
||||
munmap_chunk(oldp);
|
||||
}
|
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__set_errno (ENOMEM);
|
||||
return NULL;
|
||||
}
|
||||
if (oldmem == 0)
|
||||
return malloc_check (bytes, NULL);
|
||||
|
||||
if (bytes == 0)
|
||||
{
|
||||
free_check (oldmem, NULL);
|
||||
return NULL;
|
||||
}
|
||||
(void) mutex_lock (&main_arena.mutex);
|
||||
const mchunkptr oldp = mem2chunk_check (oldmem, &magic_p);
|
||||
(void) mutex_unlock (&main_arena.mutex);
|
||||
if (!oldp)
|
||||
{
|
||||
malloc_printerr (check_action, "realloc(): invalid pointer", oldmem);
|
||||
return malloc_check (bytes, NULL);
|
||||
}
|
||||
const INTERNAL_SIZE_T oldsize = chunksize (oldp);
|
||||
|
||||
checked_request2size (bytes + 1, nb);
|
||||
(void) mutex_lock (&main_arena.mutex);
|
||||
|
||||
if (chunk_is_mmapped (oldp))
|
||||
{
|
||||
#if HAVE_MREMAP
|
||||
mchunkptr newp = mremap_chunk (oldp, nb);
|
||||
if (newp)
|
||||
newmem = chunk2mem (newp);
|
||||
else
|
||||
#endif
|
||||
{
|
||||
/* Note the extra SIZE_SZ overhead. */
|
||||
if (oldsize - SIZE_SZ >= nb)
|
||||
newmem = oldmem; /* do nothing */
|
||||
else
|
||||
{
|
||||
/* Must alloc, copy, free. */
|
||||
if (top_check () >= 0)
|
||||
newmem = _int_malloc (&main_arena, bytes + 1);
|
||||
if (newmem)
|
||||
{
|
||||
memcpy (newmem, oldmem, oldsize - 2 * SIZE_SZ);
|
||||
munmap_chunk (oldp);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if (top_check() >= 0) {
|
||||
INTERNAL_SIZE_T nb;
|
||||
checked_request2size(bytes + 1, nb);
|
||||
newmem = _int_realloc(&main_arena, oldp, oldsize, nb);
|
||||
else
|
||||
{
|
||||
if (top_check () >= 0)
|
||||
{
|
||||
INTERNAL_SIZE_T nb;
|
||||
checked_request2size (bytes + 1, nb);
|
||||
newmem = _int_realloc (&main_arena, oldp, oldsize, nb);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* mem2chunk_check changed the magic byte in the old chunk.
|
||||
If newmem is NULL, then the old chunk will still be used though,
|
||||
so we need to invert that change here. */
|
||||
if (newmem == NULL) *magic_p ^= 0xFF;
|
||||
if (newmem == NULL)
|
||||
*magic_p ^= 0xFF;
|
||||
|
||||
(void)mutex_unlock(&main_arena.mutex);
|
||||
(void) mutex_unlock (&main_arena.mutex);
|
||||
|
||||
return mem2mem_check(newmem, bytes);
|
||||
return mem2mem_check (newmem, bytes);
|
||||
}
|
||||
|
||||
static void*
|
||||
memalign_check(size_t alignment, size_t bytes, const void *caller)
|
||||
static void *
|
||||
memalign_check (size_t alignment, size_t bytes, const void *caller)
|
||||
{
|
||||
void* mem;
|
||||
void *mem;
|
||||
|
||||
if (alignment <= MALLOC_ALIGNMENT) return malloc_check(bytes, NULL);
|
||||
if (alignment < MINSIZE) alignment = MINSIZE;
|
||||
if (alignment <= MALLOC_ALIGNMENT)
|
||||
return malloc_check (bytes, NULL);
|
||||
|
||||
if (alignment < MINSIZE)
|
||||
alignment = MINSIZE;
|
||||
|
||||
/* If the alignment is greater than SIZE_MAX / 2 + 1 it cannot be a
|
||||
power of 2 and will cause overflow in the check below. */
|
||||
@ -377,17 +414,19 @@ memalign_check(size_t alignment, size_t bytes, const void *caller)
|
||||
}
|
||||
|
||||
/* Make sure alignment is power of 2. */
|
||||
if (!powerof2(alignment)) {
|
||||
size_t a = MALLOC_ALIGNMENT * 2;
|
||||
while (a < alignment) a <<= 1;
|
||||
alignment = a;
|
||||
}
|
||||
if (!powerof2 (alignment))
|
||||
{
|
||||
size_t a = MALLOC_ALIGNMENT * 2;
|
||||
while (a < alignment)
|
||||
a <<= 1;
|
||||
alignment = a;
|
||||
}
|
||||
|
||||
(void)mutex_lock(&main_arena.mutex);
|
||||
mem = (top_check() >= 0) ? _int_memalign(&main_arena, alignment, bytes+1) :
|
||||
NULL;
|
||||
(void)mutex_unlock(&main_arena.mutex);
|
||||
return mem2mem_check(mem, bytes);
|
||||
(void) mutex_lock (&main_arena.mutex);
|
||||
mem = (top_check () >= 0) ? _int_memalign (&main_arena, alignment, bytes + 1) :
|
||||
NULL;
|
||||
(void) mutex_unlock (&main_arena.mutex);
|
||||
return mem2mem_check (mem, bytes);
|
||||
}
|
||||
|
||||
|
||||
@ -408,59 +447,63 @@ memalign_check(size_t alignment, size_t bytes, const void *caller)
|
||||
then the hooks are reset to 0. */
|
||||
|
||||
#define MALLOC_STATE_MAGIC 0x444c4541l
|
||||
#define MALLOC_STATE_VERSION (0*0x100l + 4l) /* major*0x100 + minor */
|
||||
#define MALLOC_STATE_VERSION (0 * 0x100l + 4l) /* major*0x100 + minor */
|
||||
|
||||
struct malloc_save_state {
|
||||
long magic;
|
||||
long version;
|
||||
mbinptr av[NBINS * 2 + 2];
|
||||
char* sbrk_base;
|
||||
int sbrked_mem_bytes;
|
||||
struct malloc_save_state
|
||||
{
|
||||
long magic;
|
||||
long version;
|
||||
mbinptr av[NBINS * 2 + 2];
|
||||
char *sbrk_base;
|
||||
int sbrked_mem_bytes;
|
||||
unsigned long trim_threshold;
|
||||
unsigned long top_pad;
|
||||
unsigned int n_mmaps_max;
|
||||
unsigned int n_mmaps_max;
|
||||
unsigned long mmap_threshold;
|
||||
int check_action;
|
||||
int check_action;
|
||||
unsigned long max_sbrked_mem;
|
||||
unsigned long max_total_mem;
|
||||
unsigned int n_mmaps;
|
||||
unsigned int max_n_mmaps;
|
||||
unsigned int n_mmaps;
|
||||
unsigned int max_n_mmaps;
|
||||
unsigned long mmapped_mem;
|
||||
unsigned long max_mmapped_mem;
|
||||
int using_malloc_checking;
|
||||
int using_malloc_checking;
|
||||
unsigned long max_fast;
|
||||
unsigned long arena_test;
|
||||
unsigned long arena_max;
|
||||
unsigned long narenas;
|
||||
};
|
||||
|
||||
void*
|
||||
__malloc_get_state(void)
|
||||
void *
|
||||
__malloc_get_state (void)
|
||||
{
|
||||
struct malloc_save_state* ms;
|
||||
struct malloc_save_state *ms;
|
||||
int i;
|
||||
mbinptr b;
|
||||
|
||||
ms = (struct malloc_save_state*)__libc_malloc(sizeof(*ms));
|
||||
ms = (struct malloc_save_state *) __libc_malloc (sizeof (*ms));
|
||||
if (!ms)
|
||||
return 0;
|
||||
(void)mutex_lock(&main_arena.mutex);
|
||||
malloc_consolidate(&main_arena);
|
||||
|
||||
(void) mutex_lock (&main_arena.mutex);
|
||||
malloc_consolidate (&main_arena);
|
||||
ms->magic = MALLOC_STATE_MAGIC;
|
||||
ms->version = MALLOC_STATE_VERSION;
|
||||
ms->av[0] = 0;
|
||||
ms->av[1] = 0; /* used to be binblocks, now no longer used */
|
||||
ms->av[2] = top(&main_arena);
|
||||
ms->av[2] = top (&main_arena);
|
||||
ms->av[3] = 0; /* used to be undefined */
|
||||
for(i=1; i<NBINS; i++) {
|
||||
b = bin_at(&main_arena, i);
|
||||
if(first(b) == b)
|
||||
ms->av[2*i+2] = ms->av[2*i+3] = 0; /* empty bin */
|
||||
else {
|
||||
ms->av[2*i+2] = first(b);
|
||||
ms->av[2*i+3] = last(b);
|
||||
for (i = 1; i < NBINS; i++)
|
||||
{
|
||||
b = bin_at (&main_arena, i);
|
||||
if (first (b) == b)
|
||||
ms->av[2 * i + 2] = ms->av[2 * i + 3] = 0; /* empty bin */
|
||||
else
|
||||
{
|
||||
ms->av[2 * i + 2] = first (b);
|
||||
ms->av[2 * i + 3] = last (b);
|
||||
}
|
||||
}
|
||||
}
|
||||
ms->sbrk_base = mp_.sbrk_base;
|
||||
ms->sbrked_mem_bytes = main_arena.system_mem;
|
||||
ms->trim_threshold = mp_.trim_threshold;
|
||||
@ -475,78 +518,92 @@ __malloc_get_state(void)
|
||||
ms->mmapped_mem = mp_.mmapped_mem;
|
||||
ms->max_mmapped_mem = mp_.max_mmapped_mem;
|
||||
ms->using_malloc_checking = using_malloc_checking;
|
||||
ms->max_fast = get_max_fast();
|
||||
ms->max_fast = get_max_fast ();
|
||||
ms->arena_test = mp_.arena_test;
|
||||
ms->arena_max = mp_.arena_max;
|
||||
ms->narenas = narenas;
|
||||
(void)mutex_unlock(&main_arena.mutex);
|
||||
return (void*)ms;
|
||||
(void) mutex_unlock (&main_arena.mutex);
|
||||
return (void *) ms;
|
||||
}
|
||||
|
||||
int
|
||||
__malloc_set_state(void* msptr)
|
||||
__malloc_set_state (void *msptr)
|
||||
{
|
||||
struct malloc_save_state* ms = (struct malloc_save_state*)msptr;
|
||||
struct malloc_save_state *ms = (struct malloc_save_state *) msptr;
|
||||
size_t i;
|
||||
mbinptr b;
|
||||
|
||||
disallow_malloc_check = 1;
|
||||
ptmalloc_init();
|
||||
if(ms->magic != MALLOC_STATE_MAGIC) return -1;
|
||||
ptmalloc_init ();
|
||||
if (ms->magic != MALLOC_STATE_MAGIC)
|
||||
return -1;
|
||||
|
||||
/* Must fail if the major version is too high. */
|
||||
if((ms->version & ~0xffl) > (MALLOC_STATE_VERSION & ~0xffl)) return -2;
|
||||
(void)mutex_lock(&main_arena.mutex);
|
||||
if ((ms->version & ~0xffl) > (MALLOC_STATE_VERSION & ~0xffl))
|
||||
return -2;
|
||||
|
||||
(void) mutex_lock (&main_arena.mutex);
|
||||
/* There are no fastchunks. */
|
||||
clear_fastchunks(&main_arena);
|
||||
clear_fastchunks (&main_arena);
|
||||
if (ms->version >= 4)
|
||||
set_max_fast(ms->max_fast);
|
||||
set_max_fast (ms->max_fast);
|
||||
else
|
||||
set_max_fast(64); /* 64 used to be the value we always used. */
|
||||
for (i=0; i<NFASTBINS; ++i)
|
||||
set_max_fast (64); /* 64 used to be the value we always used. */
|
||||
for (i = 0; i < NFASTBINS; ++i)
|
||||
fastbin (&main_arena, i) = 0;
|
||||
for (i=0; i<BINMAPSIZE; ++i)
|
||||
for (i = 0; i < BINMAPSIZE; ++i)
|
||||
main_arena.binmap[i] = 0;
|
||||
top(&main_arena) = ms->av[2];
|
||||
top (&main_arena) = ms->av[2];
|
||||
main_arena.last_remainder = 0;
|
||||
for(i=1; i<NBINS; i++) {
|
||||
b = bin_at(&main_arena, i);
|
||||
if(ms->av[2*i+2] == 0) {
|
||||
assert(ms->av[2*i+3] == 0);
|
||||
first(b) = last(b) = b;
|
||||
} else {
|
||||
if(ms->version >= 3 &&
|
||||
(i<NSMALLBINS || (largebin_index(chunksize(ms->av[2*i+2]))==i &&
|
||||
largebin_index(chunksize(ms->av[2*i+3]))==i))) {
|
||||
first(b) = ms->av[2*i+2];
|
||||
last(b) = ms->av[2*i+3];
|
||||
/* Make sure the links to the bins within the heap are correct. */
|
||||
first(b)->bk = b;
|
||||
last(b)->fd = b;
|
||||
/* Set bit in binblocks. */
|
||||
mark_bin(&main_arena, i);
|
||||
} else {
|
||||
/* Oops, index computation from chunksize must have changed.
|
||||
Link the whole list into unsorted_chunks. */
|
||||
first(b) = last(b) = b;
|
||||
b = unsorted_chunks(&main_arena);
|
||||
ms->av[2*i+2]->bk = b;
|
||||
ms->av[2*i+3]->fd = b->fd;
|
||||
b->fd->bk = ms->av[2*i+3];
|
||||
b->fd = ms->av[2*i+2];
|
||||
}
|
||||
for (i = 1; i < NBINS; i++)
|
||||
{
|
||||
b = bin_at (&main_arena, i);
|
||||
if (ms->av[2 * i + 2] == 0)
|
||||
{
|
||||
assert (ms->av[2 * i + 3] == 0);
|
||||
first (b) = last (b) = b;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (ms->version >= 3 &&
|
||||
(i < NSMALLBINS || (largebin_index (chunksize (ms->av[2 * i + 2])) == i &&
|
||||
largebin_index (chunksize (ms->av[2 * i + 3])) == i)))
|
||||
{
|
||||
first (b) = ms->av[2 * i + 2];
|
||||
last (b) = ms->av[2 * i + 3];
|
||||
/* Make sure the links to the bins within the heap are correct. */
|
||||
first (b)->bk = b;
|
||||
last (b)->fd = b;
|
||||
/* Set bit in binblocks. */
|
||||
mark_bin (&main_arena, i);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Oops, index computation from chunksize must have changed.
|
||||
Link the whole list into unsorted_chunks. */
|
||||
first (b) = last (b) = b;
|
||||
b = unsorted_chunks (&main_arena);
|
||||
ms->av[2 * i + 2]->bk = b;
|
||||
ms->av[2 * i + 3]->fd = b->fd;
|
||||
b->fd->bk = ms->av[2 * i + 3];
|
||||
b->fd = ms->av[2 * i + 2];
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
if (ms->version < 3) {
|
||||
/* Clear fd_nextsize and bk_nextsize fields. */
|
||||
b = unsorted_chunks(&main_arena)->fd;
|
||||
while (b != unsorted_chunks(&main_arena)) {
|
||||
if (!in_smallbin_range(chunksize(b))) {
|
||||
b->fd_nextsize = NULL;
|
||||
b->bk_nextsize = NULL;
|
||||
}
|
||||
b = b->fd;
|
||||
if (ms->version < 3)
|
||||
{
|
||||
/* Clear fd_nextsize and bk_nextsize fields. */
|
||||
b = unsorted_chunks (&main_arena)->fd;
|
||||
while (b != unsorted_chunks (&main_arena))
|
||||
{
|
||||
if (!in_smallbin_range (chunksize (b)))
|
||||
{
|
||||
b->fd_nextsize = NULL;
|
||||
b->bk_nextsize = NULL;
|
||||
}
|
||||
b = b->fd;
|
||||
}
|
||||
}
|
||||
}
|
||||
mp_.sbrk_base = ms->sbrk_base;
|
||||
main_arena.system_mem = ms->sbrked_mem_bytes;
|
||||
mp_.trim_threshold = ms->trim_threshold;
|
||||
@ -560,28 +617,31 @@ __malloc_set_state(void* msptr)
|
||||
mp_.mmapped_mem = ms->mmapped_mem;
|
||||
mp_.max_mmapped_mem = ms->max_mmapped_mem;
|
||||
/* add version-dependent code here */
|
||||
if (ms->version >= 1) {
|
||||
/* Check whether it is safe to enable malloc checking, or whether
|
||||
it is necessary to disable it. */
|
||||
if (ms->using_malloc_checking && !using_malloc_checking &&
|
||||
!disallow_malloc_check)
|
||||
__malloc_check_init ();
|
||||
else if (!ms->using_malloc_checking && using_malloc_checking) {
|
||||
__malloc_hook = NULL;
|
||||
__free_hook = NULL;
|
||||
__realloc_hook = NULL;
|
||||
__memalign_hook = NULL;
|
||||
using_malloc_checking = 0;
|
||||
if (ms->version >= 1)
|
||||
{
|
||||
/* Check whether it is safe to enable malloc checking, or whether
|
||||
it is necessary to disable it. */
|
||||
if (ms->using_malloc_checking && !using_malloc_checking &&
|
||||
!disallow_malloc_check)
|
||||
__malloc_check_init ();
|
||||
else if (!ms->using_malloc_checking && using_malloc_checking)
|
||||
{
|
||||
__malloc_hook = NULL;
|
||||
__free_hook = NULL;
|
||||
__realloc_hook = NULL;
|
||||
__memalign_hook = NULL;
|
||||
using_malloc_checking = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (ms->version >= 4) {
|
||||
mp_.arena_test = ms->arena_test;
|
||||
mp_.arena_max = ms->arena_max;
|
||||
narenas = ms->narenas;
|
||||
}
|
||||
check_malloc_state(&main_arena);
|
||||
if (ms->version >= 4)
|
||||
{
|
||||
mp_.arena_test = ms->arena_test;
|
||||
mp_.arena_max = ms->arena_max;
|
||||
narenas = ms->narenas;
|
||||
}
|
||||
check_malloc_state (&main_arena);
|
||||
|
||||
(void)mutex_unlock(&main_arena.mutex);
|
||||
(void) mutex_unlock (&main_arena.mutex);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user