-#endif
-
-#if USE_MEMCPY
-
-/* The following macros are only invoked with (2n+1)-multiples of
- INTERNAL_SIZE_T units, with a positive integer n. This is exploited
- for fast inline execution when n is small. */
-
-#define MALLOC_ZERO(charp, nbytes) \
-do { \
- INTERNAL_SIZE_T mzsz = (nbytes); \
- if(mzsz <= 9*sizeof(mzsz)) { \
- INTERNAL_SIZE_T* mz = (INTERNAL_SIZE_T*) (charp); \
- if(mzsz >= 5*sizeof(mzsz)) { *mz++ = 0; \
- *mz++ = 0; \
- if(mzsz >= 7*sizeof(mzsz)) { *mz++ = 0; \
- *mz++ = 0; \
- if(mzsz >= 9*sizeof(mzsz)) { *mz++ = 0; \
- *mz++ = 0; }}} \
- *mz++ = 0; \
- *mz++ = 0; \
- *mz = 0; \
- } else memset((charp), 0, mzsz); \
-} while(0)
-
-#define MALLOC_COPY(dest,src,nbytes) \
-do { \
- INTERNAL_SIZE_T mcsz = (nbytes); \
- if(mcsz <= 9*sizeof(mcsz)) { \
- INTERNAL_SIZE_T* mcsrc = (INTERNAL_SIZE_T*) (src); \
- INTERNAL_SIZE_T* mcdst = (INTERNAL_SIZE_T*) (dest); \
- if(mcsz >= 5*sizeof(mcsz)) { *mcdst++ = *mcsrc++; \
- *mcdst++ = *mcsrc++; \
- if(mcsz >= 7*sizeof(mcsz)) { *mcdst++ = *mcsrc++; \
- *mcdst++ = *mcsrc++; \
- if(mcsz >= 9*sizeof(mcsz)) { *mcdst++ = *mcsrc++; \
- *mcdst++ = *mcsrc++; }}} \
- *mcdst++ = *mcsrc++; \
- *mcdst++ = *mcsrc++; \
- *mcdst = *mcsrc ; \
- } else memcpy(dest, src, mcsz); \
-} while(0)
-
-#else /* !USE_MEMCPY */
-
-/* Use Duff's device for good zeroing/copying performance. */
-
-#define MALLOC_ZERO(charp, nbytes) \
-do { \
- INTERNAL_SIZE_T* mzp = (INTERNAL_SIZE_T*)(charp); \
- long mctmp = (nbytes)/sizeof(INTERNAL_SIZE_T), mcn; \
- if (mctmp < 8) mcn = 0; else { mcn = (mctmp-1)/8; mctmp %= 8; } \
- switch (mctmp) { \
- case 0: for(;;) { *mzp++ = 0; \
- case 7: *mzp++ = 0; \
- case 6: *mzp++ = 0; \
- case 5: *mzp++ = 0; \
- case 4: *mzp++ = 0; \
- case 3: *mzp++ = 0; \
- case 2: *mzp++ = 0; \
- case 1: *mzp++ = 0; if(mcn <= 0) break; mcn--; } \
- } \
-} while(0)
-
-#define MALLOC_COPY(dest,src,nbytes) \
-do { \
- INTERNAL_SIZE_T* mcsrc = (INTERNAL_SIZE_T*) src; \
- INTERNAL_SIZE_T* mcdst = (INTERNAL_SIZE_T*) dest; \
- long mctmp = (nbytes)/sizeof(INTERNAL_SIZE_T), mcn; \
- if (mctmp < 8) mcn = 0; else { mcn = (mctmp-1)/8; mctmp %= 8; } \
- switch (mctmp) { \
- case 0: for(;;) { *mcdst++ = *mcsrc++; \
- case 7: *mcdst++ = *mcsrc++; \
- case 6: *mcdst++ = *mcsrc++; \
- case 5: *mcdst++ = *mcsrc++; \
- case 4: *mcdst++ = *mcsrc++; \
- case 3: *mcdst++ = *mcsrc++; \
- case 2: *mcdst++ = *mcsrc++; \
- case 1: *mcdst++ = *mcsrc++; if(mcn <= 0) break; mcn--; } \
- } \
-} while(0)
-
-#endif
-
-
-/*
- Define HAVE_MMAP to optionally make malloc() use mmap() to
- allocate very large blocks. These will be returned to the
- operating system immediately after a free().
-*/
-
-#ifndef HAVE_MMAP
-#define HAVE_MMAP 1
-#endif
-
-/*
- Define HAVE_MREMAP to make realloc() use mremap() to re-allocate
- large blocks. This is currently only possible on Linux with
- kernel versions newer than 1.3.77.
-*/
-
-#ifndef HAVE_MREMAP
-#ifdef INTERNAL_LINUX_C_LIB
-#define HAVE_MREMAP 1
-#else
-#define HAVE_MREMAP 0
-#endif
-#endif
-
-#if HAVE_MMAP
-
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-
-#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
-#define MAP_ANONYMOUS MAP_ANON
-#endif
-
-#endif /* HAVE_MMAP */
-
-/*
- Access to system page size. To the extent possible, this malloc
- manages memory from the system in page-size units.
-
- The following mechanics for getpagesize were adapted from
- bsd/gnu getpagesize.h
-*/
-
-#ifndef LACKS_UNISTD_H
-# include <unistd.h>
-#endif
-
-#ifndef malloc_getpagesize
-# ifdef _SC_PAGESIZE /* some SVR4 systems omit an underscore */
-# ifndef _SC_PAGE_SIZE
-# define _SC_PAGE_SIZE _SC_PAGESIZE
-# endif
-# endif
-# ifdef _SC_PAGE_SIZE
-# define malloc_getpagesize sysconf(_SC_PAGE_SIZE)
-# else
-# if defined(BSD) || defined(DGUX) || defined(HAVE_GETPAGESIZE)
- extern size_t getpagesize();
-# define malloc_getpagesize getpagesize()
-# else
-# ifdef WIN32
-# define malloc_getpagesize (4096) /* TBD: Use 'GetSystemInfo' instead */
-# else
-# ifndef LACKS_SYS_PARAM_H
-# include <sys/param.h>
-# endif
-# ifdef EXEC_PAGESIZE
-# define malloc_getpagesize EXEC_PAGESIZE
-# else
-# ifdef NBPG
-# ifndef CLSIZE
-# define malloc_getpagesize NBPG
-# else
-# define malloc_getpagesize (NBPG * CLSIZE)
-# endif
-# else
-# ifdef NBPC
-# define malloc_getpagesize NBPC
-# else
-# ifdef PAGESIZE
-# define malloc_getpagesize PAGESIZE
-# else
-# define malloc_getpagesize (4096) /* just guess */
-# endif
-# endif
-# endif
-# endif
-# endif
-# endif
-# endif
-#endif
-
-
-/*
-
- This version of malloc supports the standard SVID/XPG mallinfo
- routine that returns a struct containing the same kind of
- information you can get from malloc_stats. It should work on
- any SVID/XPG compliant system that has a /usr/include/malloc.h
- defining struct mallinfo. (If you'd like to install such a thing
- yourself, cut out the preliminary declarations as described above
- and below and save them in a malloc.h file. But there's no
- compelling reason to bother to do this.)
-
- The main declaration needed is the mallinfo struct that is returned
- (by-copy) by mallinfo(). The SVID/XPG malloinfo struct contains a
- bunch of fields, most of which are not even meaningful in this
- version of malloc. Some of these fields are are instead filled by
- mallinfo() with other numbers that might possibly be of interest.
-
- HAVE_USR_INCLUDE_MALLOC_H should be set if you have a
- /usr/include/malloc.h file that includes a declaration of struct
- mallinfo. If so, it is included; else an SVID2/XPG2 compliant
- version is declared below. These must be precisely the same for
- mallinfo() to work.
-
-*/
-
-/* #define HAVE_USR_INCLUDE_MALLOC_H */
-
-#if HAVE_USR_INCLUDE_MALLOC_H
-#include "/usr/include/malloc.h"
-#else
-
-/* SVID2/XPG mallinfo structure */
-
-struct mallinfo {
- int arena; /* total space allocated from system */
- int ordblks; /* number of non-inuse chunks */
- int smblks; /* unused -- always zero */
- int hblks; /* number of mmapped regions */
- int hblkhd; /* total space in mmapped regions */
- int usmblks; /* unused -- always zero */
- int fsmblks; /* unused -- always zero */
- int uordblks; /* total allocated space */
- int fordblks; /* total non-inuse space */
- int keepcost; /* top-most, releasable (via malloc_trim) space */
-};
-
-/* SVID2/XPG mallopt options */
-
-#define M_MXFAST 1 /* UNUSED in this malloc */
-#define M_NLBLKS 2 /* UNUSED in this malloc */
-#define M_GRAIN 3 /* UNUSED in this malloc */
-#define M_KEEP 4 /* UNUSED in this malloc */
-
-#endif
-
-/* mallopt options that actually do something */
-
-#define M_TRIM_THRESHOLD -1
-#define M_TOP_PAD -2
-#define M_MMAP_THRESHOLD -3
-#define M_MMAP_MAX -4
-
-
-#ifndef DEFAULT_TRIM_THRESHOLD
-#define DEFAULT_TRIM_THRESHOLD (128 * 1024)
-#endif
-
-/*
- M_TRIM_THRESHOLD is the maximum amount of unused top-most memory
- to keep before releasing via malloc_trim in free().
-
- Automatic trimming is mainly useful in long-lived programs.
- Because trimming via sbrk can be slow on some systems, and can
- sometimes be wasteful (in cases where programs immediately
- afterward allocate more large chunks) the value should be high
- enough so that your overall system performance would improve by
- releasing.
-
- The trim threshold and the mmap control parameters (see below)
- can be traded off with one another. Trimming and mmapping are
- two different ways of releasing unused memory back to the
- system. Between these two, it is often possible to keep
- system-level demands of a long-lived program down to a bare
- minimum. For example, in one test suite of sessions measuring
- the XF86 X server on Linux, using a trim threshold of 128K and a
- mmap threshold of 192K led to near-minimal long term resource
- consumption.
-
- If you are using this malloc in a long-lived program, it should
- pay to experiment with these values. As a rough guide, you
- might set to a value close to the average size of a process
- (program) running on your system. Releasing this much memory
- would allow such a process to run in memory. Generally, it's
- worth it to tune for trimming rather tham memory mapping when a
- program undergoes phases where several large chunks are
- allocated and released in ways that can reuse each other's
- storage, perhaps mixed with phases where there are no such
- chunks at all. And in well-behaved long-lived programs,
- controlling release of large blocks via trimming versus mapping
- is usually faster.
-
- However, in most programs, these parameters serve mainly as
- protection against the system-level effects of carrying around
- massive amounts of unneeded memory. Since frequent calls to
- sbrk, mmap, and munmap otherwise degrade performance, the default
- parameters are set to relatively high values that serve only as
- safeguards.
-
- The default trim value is high enough to cause trimming only in
- fairly extreme (by current memory consumption standards) cases.
- It must be greater than page size to have any useful effect. To
- disable trimming completely, you can set to (unsigned long)(-1);
-
-
-*/
-
-
-#ifndef DEFAULT_TOP_PAD
-#define DEFAULT_TOP_PAD (0)
-#endif
-
-/*
- M_TOP_PAD is the amount of extra `padding' space to allocate or
- retain whenever sbrk is called. It is used in two ways internally:
-
- * When sbrk is called to extend the top of the arena to satisfy
- a new malloc request, this much padding is added to the sbrk
- request.
-
- * When malloc_trim is called automatically from free(),
- it is used as the `pad' argument.
-
- In both cases, the actual amount of padding is rounded
- so that the end of the arena is always a system page boundary.
-
- The main reason for using padding is to avoid calling sbrk so
- often. Having even a small pad greatly reduces the likelihood
- that nearly every malloc request during program start-up (or
- after trimming) will invoke sbrk, which needlessly wastes
- time.
-
- Automatic rounding-up to page-size units is normally sufficient
- to avoid measurable overhead, so the default is 0. However, in
- systems where sbrk is relatively slow, it can pay to increase
- this value, at the expense of carrying around more memory than
- the program needs.
-
-*/
-
-
-#ifndef DEFAULT_MMAP_THRESHOLD
-#define DEFAULT_MMAP_THRESHOLD (128 * 1024)
-#endif
-
-/*
-
- M_MMAP_THRESHOLD is the request size threshold for using mmap()
- to service a request. Requests of at least this size that cannot
- be allocated using already-existing space will be serviced via mmap.
- (If enough normal freed space already exists it is used instead.)
-
- Using mmap segregates relatively large chunks of memory so that
- they can be individually obtained and released from the host
- system. A request serviced through mmap is never reused by any
- other request (at least not directly; the system may just so
- happen to remap successive requests to the same locations).
-
- Segregating space in this way has the benefit that mmapped space
- can ALWAYS be individually released back to the system, which
- helps keep the system level memory demands of a long-lived
- program low. Mapped memory can never become `locked' between
- other chunks, as can happen with normally allocated chunks, which
- menas that even trimming via malloc_trim would not release them.
-
- However, it has the disadvantages that:
-
- 1. The space cannot be reclaimed, consolidated, and then
- used to service later requests, as happens with normal chunks.
- 2. It can lead to more wastage because of mmap page alignment
- requirements
- 3. It causes malloc performance to be more dependent on host
- system memory management support routines which may vary in
- implementation quality and may impose arbitrary
- limitations. Generally, servicing a request via normal
- malloc steps is faster than going through a system's mmap.
-
- All together, these considerations should lead you to use mmap
- only for relatively large requests.
-
-
-*/
-
-
-#ifndef DEFAULT_MMAP_MAX
-#if HAVE_MMAP
-#define DEFAULT_MMAP_MAX (64)
-#else
-#define DEFAULT_MMAP_MAX (0)
-#endif
-#endif
-
-/*
- M_MMAP_MAX is the maximum number of requests to simultaneously
- service using mmap. This parameter exists because:
-
- 1. Some systems have a limited number of internal tables for
- use by mmap.
- 2. In most systems, overreliance on mmap can degrade overall
- performance.
- 3. If a program allocates many large regions, it is probably
- better off using normal sbrk-based allocation routines that
- can reclaim and reallocate normal heap memory. Using a
- small value allows transition into this mode after the
- first few allocations.
-
- Setting to 0 disables all use of mmap. If HAVE_MMAP is not set,
- the default value is 0, and attempts to set it to non-zero values
- in mallopt will fail.
-*/
-
-
-/*
- USE_DL_PREFIX will prefix all public routines with the string 'dl'.
- Useful to quickly avoid procedure declaration conflicts and linker
- symbol conflicts with existing memory allocation routines.
-
-*/
-
-/* #define USE_DL_PREFIX */
-
-
-/*
-
- Special defines for linux libc
-
- Except when compiled using these special defines for Linux libc
- using weak aliases, this malloc is NOT designed to work in
- multithreaded applications. No semaphores or other concurrency
- control are provided to ensure that multiple malloc or free calls
- don't run at the same time, which could be disasterous. A single
- semaphore could be used across malloc, realloc, and free (which is
- essentially the effect of the linux weak alias approach). It would
- be hard to obtain finer granularity.
-
-*/
-
-
-#ifdef INTERNAL_LINUX_C_LIB
-
-#if __STD_C
-
-Void_t * __default_morecore_init (ptrdiff_t);
-Void_t *(*__morecore)(ptrdiff_t) = __default_morecore_init;
-
-#else
-
-Void_t * __default_morecore_init ();
-Void_t *(*__morecore)() = __default_morecore_init;
-
-#endif
-
-#define MORECORE (*__morecore)
-#define MORECORE_FAILURE 0
-#define MORECORE_CLEARS 1
-
-#else /* INTERNAL_LINUX_C_LIB */
-
-#if __STD_C
-extern Void_t* sbrk(ptrdiff_t);
-#else
-extern Void_t* sbrk();
-#endif
-
-#ifndef MORECORE
-#define MORECORE sbrk
-#endif
-
-#ifndef MORECORE_FAILURE
-#define MORECORE_FAILURE -1
-#endif
-
-#ifndef MORECORE_CLEARS
-#define MORECORE_CLEARS 1
-#endif
-
-#endif /* INTERNAL_LINUX_C_LIB */
-
-#if defined(INTERNAL_LINUX_C_LIB) && defined(__ELF__)
-
-#define cALLOc __libc_calloc
-#define fREe __libc_free
-#define mALLOc __libc_malloc
-#define mEMALIGn __libc_memalign
-#define rEALLOc __libc_realloc
-#define vALLOc __libc_valloc
-#define pvALLOc __libc_pvalloc
-#define mALLINFo __libc_mallinfo
-#define mALLOPt __libc_mallopt
-
-#pragma weak calloc = __libc_calloc
-#pragma weak free = __libc_free
-#pragma weak cfree = __libc_free
-#pragma weak malloc = __libc_malloc
-#pragma weak memalign = __libc_memalign
-#pragma weak realloc = __libc_realloc
-#pragma weak valloc = __libc_valloc
-#pragma weak pvalloc = __libc_pvalloc
-#pragma weak mallinfo = __libc_mallinfo
-#pragma weak mallopt = __libc_mallopt
-
-#else
-
-#ifdef USE_DL_PREFIX
-#define cALLOc dlcalloc
-#define fREe dlfree
-#define mALLOc dlmalloc
-#define mEMALIGn dlmemalign
-#define rEALLOc dlrealloc
-#define vALLOc dlvalloc
-#define pvALLOc dlpvalloc
-#define mALLINFo dlmallinfo
-#define mALLOPt dlmallopt
-#else /* USE_DL_PREFIX */
-#define cALLOc calloc
-#define fREe free
-#define mALLOc malloc
-#define mEMALIGn memalign
-#define rEALLOc realloc
-#define vALLOc valloc
-#define pvALLOc pvalloc
-#define mALLINFo mallinfo
-#define mALLOPt mallopt
-#endif /* USE_DL_PREFIX */
-
-#endif
-
-/* Public routines */
-
-#if __STD_C
-
-Void_t* mALLOc(size_t);
-void fREe(Void_t*);
-Void_t* rEALLOc(Void_t*, size_t);
-Void_t* mEMALIGn(size_t, size_t);
-Void_t* vALLOc(size_t);
-Void_t* pvALLOc(size_t);
-Void_t* cALLOc(size_t, size_t);
-void cfree(Void_t*);
-int malloc_trim(size_t);
-size_t malloc_usable_size(Void_t*);
-void malloc_stats();
-int mALLOPt(int, int);
-struct mallinfo mALLINFo(void);
-#else
-Void_t* mALLOc();
-void fREe();
-Void_t* rEALLOc();
-Void_t* mEMALIGn();
-Void_t* vALLOc();
-Void_t* pvALLOc();
-Void_t* cALLOc();
-void cfree();
-int malloc_trim();
-size_t malloc_usable_size();
-void malloc_stats();
-int mALLOPt();
-struct mallinfo mALLINFo();
-#endif
-
-
-#ifdef __cplusplus
-}; /* end of extern "C" */
-#endif
-
-/* ---------- To make a malloc.h, end cutting here ------------ */
-#endif /* 0 */ /* Moved to malloc.h */