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Diffstat (limited to 'src/3rdparty/ptmalloc/malloc-private.h')
| -rw-r--r-- | src/3rdparty/ptmalloc/malloc-private.h | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/src/3rdparty/ptmalloc/malloc-private.h b/src/3rdparty/ptmalloc/malloc-private.h deleted file mode 100644 index 680c36bac0..0000000000 --- a/src/3rdparty/ptmalloc/malloc-private.h +++ /dev/null @@ -1,170 +0,0 @@ -/* - $Id: malloc-private.h,v 1.4 2006/03/31 12:56:52 wg Exp $ - Private header file for ptmalloc3, created by Wolfram Gloger - and released to the public domain, as explained at - http://creativecommons.org/licenses/publicdomain. -*/ - -/* The following file is replicated from malloc.c */ - -#ifndef MALLOC_PRIVATE_H -#define MALLOC_PRIVATE_H - -#ifndef MALLOC_ALIGNMENT -# define MALLOC_ALIGNMENT ((size_t)8U) -#endif -#ifndef USE_LOCKS -# define USE_LOCKS 0 -#endif - -/* The bit mask value corresponding to MALLOC_ALIGNMENT */ -#define CHUNK_ALIGN_MASK (MALLOC_ALIGNMENT - SIZE_T_ONE) - -/* the number of bytes to offset an address to align it */ -#define align_offset(A)\ - ((((size_t)(A) & CHUNK_ALIGN_MASK) == 0)? 0 :\ - ((MALLOC_ALIGNMENT - ((size_t)(A) & CHUNK_ALIGN_MASK)) & CHUNK_ALIGN_MASK)) - -#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON) -#define MAP_ANONYMOUS MAP_ANON -#endif /* MAP_ANON */ -#ifdef MAP_ANONYMOUS -#define MMAP_FLAGS (MAP_PRIVATE|MAP_ANONYMOUS) -#define CALL_MMAP(s) mmap(0, (s), PROT_READ|PROT_WRITE, MMAP_FLAGS, -1, 0) -#else /* MAP_ANONYMOUS */ -/* - Nearly all versions of mmap support MAP_ANONYMOUS, so the following - is unlikely to be needed, but is supplied just in case. -*/ -#include <fcntl.h> /* for O_RDWR */ -#define MMAP_FLAGS (MAP_PRIVATE) -static int dev_zero_fd = -1; /* Cached file descriptor for /dev/zero. */ -#define CALL_MMAP(s) ((dev_zero_fd < 0) ? \ - (dev_zero_fd = open("/dev/zero", O_RDWR), \ - mmap(0, (s), PROT_READ|PROT_WRITE, MMAP_FLAGS, dev_zero_fd, 0)) : \ - mmap(0, (s), PROT_READ|PROT_WRITE, MMAP_FLAGS, dev_zero_fd, 0)) -#endif /* MAP_ANONYMOUS */ -#define CALL_MUNMAP(a, s) munmap((a), (s)) - -struct malloc_chunk { - size_t prev_foot; /* Size of previous chunk (if free). */ - size_t head; /* Size and inuse bits. */ - struct malloc_chunk* fd; /* double links -- used only if free. */ - struct malloc_chunk* bk; -}; - -typedef struct malloc_chunk mchunk; -typedef struct malloc_chunk* mchunkptr; - -typedef unsigned int binmap_t; -typedef unsigned int flag_t; - -struct malloc_tree_chunk; -typedef struct malloc_tree_chunk* tbinptr; - -struct malloc_segment { - char* base; /* base address */ - size_t size; /* allocated size */ - struct malloc_segment* next; /* ptr to next segment */ - flag_t sflags; /* mmap and extern flag */ -}; - -typedef struct malloc_segment msegment; - -#define NSMALLBINS (32U) -#define NTREEBINS (32U) - -struct malloc_state { - binmap_t smallmap; - binmap_t treemap; - size_t dvsize; - size_t topsize; - char* least_addr; - mchunkptr dv; - mchunkptr top; - size_t trim_check; - size_t release_checks; - size_t magic; - mchunkptr smallbins[(NSMALLBINS+1)*2]; - tbinptr treebins[NTREEBINS]; - size_t footprint; - size_t max_footprint; - flag_t mflags; -#if USE_LOCKS - MLOCK_T mutex; -#endif /* USE_LOCKS */ - msegment seg; - void* extp; - size_t exts; -}; - -/* - TOP_FOOT_SIZE is padding at the end of a segment, including space - that may be needed to place segment records and fenceposts when new - noncontiguous segments are added. -*/ -#define TOP_FOOT_SIZE\ - (align_offset(chunk2mem(0))+pad_request(sizeof(struct malloc_segment))+MIN_CHUNK_SIZE) - -/* ------------------- Chunks sizes and alignments ----------------------- */ - -#define MCHUNK_SIZE (sizeof(mchunk)) - -#define CHUNK_OVERHEAD (SIZE_T_SIZE) - -/* MMapped chunks need a second word of overhead ... */ -#define MMAP_CHUNK_OVERHEAD (TWO_SIZE_T_SIZES) -/* ... and additional padding for fake next-chunk at foot */ -#define MMAP_FOOT_PAD (FOUR_SIZE_T_SIZES) - -/* The smallest size we can malloc is an aligned minimal chunk */ -#define MIN_CHUNK_SIZE\ - ((MCHUNK_SIZE + CHUNK_ALIGN_MASK) & ~CHUNK_ALIGN_MASK) - -/* conversion from malloc headers to user pointers, and back */ -#define chunk2mem(p) ((void*)((char*)(p) + TWO_SIZE_T_SIZES)) -#define mem2chunk(mem) ((mchunkptr)((char*)(mem) - TWO_SIZE_T_SIZES)) -/* chunk associated with aligned address A */ -#define align_as_chunk(A) (mchunkptr)((A) + align_offset(chunk2mem(A))) - -/* pad request bytes into a usable size */ -#define pad_request(req) \ - (((req) + CHUNK_OVERHEAD + CHUNK_ALIGN_MASK) & ~CHUNK_ALIGN_MASK) - -/* The byte and bit size of a size_t */ -#define SIZE_T_SIZE (sizeof(size_t)) -#define SIZE_T_BITSIZE (sizeof(size_t) << 3) - -/* Some constants coerced to size_t */ -/* Annoying but necessary to avoid errors on some platforms */ -#define SIZE_T_ZERO ((size_t)0) -#define SIZE_T_ONE ((size_t)1) -#define SIZE_T_TWO ((size_t)2) -#define SIZE_T_FOUR ((size_t)4) -#define TWO_SIZE_T_SIZES (SIZE_T_SIZE<<1) -#define FOUR_SIZE_T_SIZES (SIZE_T_SIZE<<2) -#define SIX_SIZE_T_SIZES (FOUR_SIZE_T_SIZES+TWO_SIZE_T_SIZES) -#define HALF_MAX_SIZE_T (MAX_SIZE_T / 2U) - -#define IS_MMAPPED_BIT (SIZE_T_ONE) -#define PINUSE_BIT (SIZE_T_ONE) -#define CINUSE_BIT (SIZE_T_TWO) -#define FLAG_BITS (PINUSE_BIT|CINUSE_BIT|SIZE_T_FOUR) - -/* head field is or'ed with NON_MAIN_ARENA if the chunk was obtained - from a non-main arena. This is only set immediately before handing - the chunk to the user, if necessary. */ -#define NON_MAIN_ARENA (SIZE_T_FOUR) - -#define cinuse(p) ((p)->head & CINUSE_BIT) -#define pinuse(p) ((p)->head & PINUSE_BIT) -#define chunksize(p) ((p)->head & ~(FLAG_BITS)) - -#define is_mmapped(p)\ - (!((p)->head & PINUSE_BIT) && ((p)->prev_foot & IS_MMAPPED_BIT)) - -/* Get the internal overhead associated with chunk p */ -#define overhead_for(p)\ - (is_mmapped(p)? MMAP_CHUNK_OVERHEAD : CHUNK_OVERHEAD) - -#endif /* MALLOC_PRIVATE_H */ |