+++ /dev/null
-/*
-Copyright (C) 1995 Pascal Haible. All Rights Reserved.
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the "Software"),
-to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense,
-and/or sell copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-PASCAL HAIBLE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
-OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-
-Except as contained in this notice, the name of Pascal Haible shall
-not be used in advertising or otherwise to promote the sale, use or other
-dealings in this Software without prior written authorization from
-Pascal Haible.
-*/
-
-/* $XFree86: xc/programs/Xserver/os/xalloc.c,v 3.12.2.1 1997/05/10 07:03:02 hohndel Exp $ */
-
-/* Only used if INTERNAL_MALLOC is defined
- * - otherwise xalloc() in utils.c is used
- */
-#ifdef INTERNAL_MALLOC
-
-#if defined(__STDC__) || defined(AMOEBA)
-#ifndef NOSTDHDRS
-#include <stdlib.h> /* for malloc() etc. */
-#endif
-#else
-extern char *malloc();
-extern char *calloc();
-extern char *realloc();
-#endif
-
-#include "Xos.h"
-#include "misc.h"
-#include "X.h"
-
-#ifdef XALLOC_LOG
-#include <stdio.h>
-#endif
-
-extern Bool Must_have_memory;
-
-/*
- ***** New malloc approach for the X server *****
- * Pascal Haible 1995
- *
- * Some statistics about memory allocation of the X server
- * The test session included several clients of different size, including
- * xv, emacs and xpaint with a new canvas of 3000x2000, zoom 5.
- * All clients were running together.
- * A protocolling version of Xalloc recorded 318917 allocating actions
- * (191573 Xalloc, 85942 XNFalloc, 41438 Xrealloc, 279727 Xfree).
- * Results grouped by size, excluding the next lower size
- * (i.e. size=32 means 16<size<=32):
- *
- * size nr of alloc max nr of blocks allocated together
- * 8 1114 287
- * 16 17341 4104
- * 32 147352 2068
- * 64 59053 2518
- * 128 46882 1230
- * 256 20544 1217
- * 512 6808 117
- * 1024 8254 171
- * 2048 4841 287
- * 4096 2429 84
- * 8192 3364 85
- * 16384 573 22
- * 32768 49 7
- * 65536 45 5
- * 131072 48 2
- * 262144 209 2
- * 524288 7 4
- * 1048576 2 1
- * 8388608 2 2
- *
- * The most used sizes:
- * count size
- * 24 136267
- * 40 37055
- * 72 17278
- * 56 13504
- * 80 9372
- * 16 8966
- * 32 8411
- * 136 8399
- * 104 7690
- * 12 7630
- * 120 5512
- * 88 4634
- * 152 3062
- * 52 2881
- * 48 2736
- * 156 1569
- * 168 1487
- * 160 1483
- * 28 1446
- * 1608 1379
- * 184 1305
- * 552 1270
- * 64 934
- * 320 891
- * 8 754
- *
- * Conclusions: more than the half of all allocations are <= 32 bytes.
- * But of these about 150,000 blocks, only a maximum of about 6,000 are
- * allocated together (including memory leaks..).
- * On the other side, only 935 of the 191573 or 0.5% were larger than 8kB
- * (362 or 0.2% larger than 16k).
- *
- * What makes the server really grow is the fragmentation of the heap,
- * and the fact that it can't shrink.
- * To cure this, we do the following:
- * - large blocks (>=11k) are mmapped on xalloc, and unmapped on xfree,
- * so we don't need any free lists etc.
- * As this needs 2 system calls, we only do this for the quite
- * infrequent large (>=11k) blocks.
- * - instead of reinventing the wheel, we use system malloc for medium
- * sized blocks (>256, <11k).
- * - for small blocks (<=256) we use an other approach:
- * As we need many small blocks, and most ones for a short time,
- * we don't go through the system malloc:
- * for each fixed sizes a seperate list of free blocks is kept.
- * to KISS (Keep it Small and Simple), we don't free them
- * (not freeing a block of 32 bytes won't be worse than having fragmented
- * a larger area on allocation).
- * This way, we (almost) allways have a fitting free block right at hand,
- * and don't have to walk any lists.
- */
-
-/*
- * structure layout of a allocated block
- * unsigned long size:
- * rounded up netto size for small and medium blocks
- * brutto size == mmap'ed area for large blocks
- * unsigned long DEBUG ? MAGIC : unused
- * .... data
- * ( unsigned long MAGIC2 ) only if SIZE_TAIL defined
- *
- */
-
-/* use otherwise unused long in the header to store a magic */
-/* shouldn't this be removed for production release ? */
-#define XALLOC_DEBUG
-
-#ifdef XALLOC_DEBUG
-/* Xfree fills the memory with a certain pattern (currently 0xF0) */
-/* this should really be removed for production release! */
-#define XFREE_ERASES
-#endif
-
-/* this must be a multiple of SIZE_STEPS below */
-#define MAX_SMALL 264 /* quite many blocks of 264 */
-
-#define MIN_LARGE (11*1024)
-/* worst case is 25% loss with a page size of 4k */
-
-/* SIZE_STEPS defines the granularity of size of small blocks -
- * this makes blocks align to that, too! */
-#define SIZE_STEPS (sizeof(double))
-#define SIZE_HEADER (2*sizeof(long)) /* = sizeof(double) for 32bit */
-#ifdef XALLOC_DEBUG
-#if defined(__sparc__) || defined(__hppa__)
-#define SIZE_TAIL (2*sizeof(long)) /* = sizeof(double) for 32bit */
-#else
-#define SIZE_TAIL (sizeof(long))
-#endif
-#endif
-
-#undef TAIL_SIZE
-#ifdef SIZE_TAIL
-#define TAIL_SIZE SIZE_TAIL
-#else
-#define TAIL_SIZE 0
-#endif
-
-#ifdef __alpha__
-#define MAGIC 0x1404196414071968
-#define MAGIC2 0x2515207525182079
-#else
-#define MAGIC 0x14071968
-#define MAGIC2 0x25182079
-#endif
-
-/* To get some statistics about memory allocation */
-
-#ifdef XALLOC_LOG
-#define XALLOC_LOG_FILE "/tmp/Xalloc.log" /* unsecure... */
-#define LOG_BODY(_body) \
- { FILE *f; \
- f = fopen(XALLOC_LOG_FILE, "a"); \
- if (NULL!=f) { \
- _body; \
- fclose(f); \
- } \
- }
-#if defined(linux) && defined(i386)
-#define LOG_ALLOC(_fun, _size, _ret) \
- { unsigned long *from; \
- __asm__("movl %%ebp,%0" : /*OUT*/ "=r" (from) : /*IN*/ ); \
- LOG_BODY(fprintf(f, "%s\t%i\t%p\t[%lu]\n", _fun, _size, _ret, *(from+1))) \
- }
-#else
-#define LOG_ALLOC(_fun, _size, _ret) \
- LOG_BODY(fprintf(f, "%s\t%i\t%p\n", _fun, _size, _ret))
-#endif
-#define LOG_REALLOC(_fun, _ptr, _size, _ret) \
- LOG_BODY(fprintf(f, "%s\t%p\t%i\t%p\n", _fun, _ptr, _size, _ret))
-#define LOG_FREE(_fun, _ptr) \
- LOG_BODY(fprintf(f, "%s\t%p\n", _fun, _ptr))
-#else
-#define LOG_ALLOC(_fun, _size, _ret)
-#define LOG_REALLOC(_fun, _ptr, _size, _ret)
-#define LOG_FREE(_fun, _ptr)
-#endif /* XALLOC_LOG */
-
-static unsigned long *free_lists[MAX_SMALL/SIZE_STEPS];
-
-/*
- * systems that support it should define HAS_MMAP_ANON or MMAP_DEV_ZERO
- * and include the appropriate header files for
- * mmap(), munmap(), PROT_READ, PROT_WRITE, MAP_PRIVATE,
- * PAGE_SIZE or _SC_PAGESIZE (and MAP_ANON for HAS_MMAP_ANON).
- *
- * systems that don't support MAP_ANON fall through to the 2 fold behaviour
- */
-
-#if defined(linux)
-#define HAS_MMAP_ANON
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <asm/page.h> /* PAGE_SIZE */
-#endif /* linux */
-
-#if defined(CSRG_BASED)
-#define HAS_MMAP_ANON
-#define HAS_GETPAGESIZE
-#include <sys/types.h>
-#include <sys/mman.h>
-#endif /* CSRG_BASED */
-
-#if defined(SVR4)
-#define MMAP_DEV_ZERO
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <unistd.h>
-#endif /* SVR4 */
-
-#if defined(sun) && !defined(SVR4) /* SunOS */
-#define MMAP_DEV_ZERO /* doesn't SunOS have MAP_ANON ?? */
-#define HAS_GETPAGESIZE
-#include <sys/types.h>
-#include <sys/mman.h>
-#endif /* sun && !SVR4 */
-
-#ifdef XNO_SYSCONF
-#undef _SC_PAGESIZE
-#endif
-
-#if defined(HAS_MMAP_ANON) || defined (MMAP_DEV_ZERO)
-static int pagesize;
-#endif
-
-#ifdef MMAP_DEV_ZERO
-static int devzerofd = -1;
-#include <errno.h>
-#ifdef X_NOT_STDC_ENV
-extern int errno;
-#endif
-#endif
-
-
-unsigned long *
-Xalloc (amount)
- unsigned long amount;
-{
- register unsigned long *ptr;
- int indx;
-
- /* sanity checks */
-
- /* zero size requested */
- if (amount == 0) {
- LOG_ALLOC("Xalloc=0", amount, 0);
- return (unsigned long *)NULL;
- }
- /* negative size (or size > 2GB) - what do we do? */
- if ((long)amount < 0) {
- /* Diagnostic */
-#ifdef FATALERRORS
- FatalError("Xalloc: Xalloc(<0)\n");
-#else
- ErrorF("Xalloc warning: Xalloc(<0) ignored..\n");
-#endif
- LOG_ALLOC("Xalloc<0", amount, 0);
- return (unsigned long *)NULL;
- }
-
- /* alignment check */
-#if defined(__alpha__) || defined(__sparc__) || defined(__mips__) || defined(__hppa__)
- amount = (amount + (sizeof(long)-1)) & ~(sizeof(long)-1);
-#endif
-
- if (amount <= MAX_SMALL) {
- /*
- * small block
- */
- /* pick a ready to use small chunk */
- indx = (amount-1) / SIZE_STEPS;
- ptr = free_lists[indx];
- if (NULL == ptr) {
- /* list empty - get 20 or 40 more */
- /* amount = size rounded up */
- amount = (indx+1) * SIZE_STEPS;
- ptr = (unsigned long *)calloc(1,(amount+SIZE_HEADER+TAIL_SIZE)
- * (amount<100 ? 40 : 20));
- if (NULL!=ptr) {
- int i;
- unsigned long *p1, *p2;
- p2 = (unsigned long *)((char *)ptr + SIZE_HEADER);
- for (i=0; i<(amount<100 ? 40 : 20); i++) {
- p1 = p2;
- p1[-2] = amount;
-#ifdef XALLOC_DEBUG
- p1[-1] = MAGIC;
-#endif /* XALLOC_DEBUG */
-#ifdef SIZE_TAIL
- *(unsigned long *)((unsigned char *)p1 + amount) = MAGIC2;
-#endif /* SIZE_TAIL */
- p2 = (unsigned long *)((char *)p1 + SIZE_HEADER + amount + TAIL_SIZE);
- *(unsigned long **)p1 = p2;
- }
- /* last one has no next one */
- *(unsigned long **)p1 = NULL;
- /* put the second in the list */
- free_lists[indx] = (unsigned long *)((char *)ptr + SIZE_HEADER + amount + TAIL_SIZE + SIZE_HEADER);
- /* take the fist one */
- ptr = (unsigned long *)((char *)ptr + SIZE_HEADER);
- LOG_ALLOC("Xalloc-S", amount, ptr);
- return ptr;
- } /* else fall through to 'Out of memory' */
- } else {
- /* take that piece of mem out of the list */
- free_lists[indx] = *((unsigned long **)ptr);
- /* already has size (and evtl. magic) filled in */
- LOG_ALLOC("Xalloc-S", amount, ptr);
- return ptr;
- }
-
-#if defined(HAS_MMAP_ANON) || defined(MMAP_DEV_ZERO)
- } else if (amount >= MIN_LARGE) {
- /*
- * large block
- */
- /* mmapped malloc */
- /* round up amount */
- amount += SIZE_HEADER + TAIL_SIZE;
- /* round up brutto amount to a multiple of the page size */
- amount = (amount + pagesize-1) & ~(pagesize-1);
-#ifdef MMAP_DEV_ZERO
- ptr = (unsigned long *)mmap((caddr_t)0,
- (size_t)amount,
- PROT_READ | PROT_WRITE,
- MAP_PRIVATE,
- devzerofd,
- (off_t)0);
-#else
- ptr = (unsigned long *)mmap((caddr_t)0,
- (size_t)amount,
- PROT_READ | PROT_WRITE,
- MAP_ANON | MAP_PRIVATE,
- -1,
- (off_t)0);
-#endif
- if (-1!=(long)ptr) {
- ptr[0] = amount - SIZE_HEADER - TAIL_SIZE;
-#ifdef XALLOC_DEBUG
- ptr[1] = MAGIC;
-#endif /* XALLOC_DEBUG */
-#ifdef SIZE_TAIL
-# ifdef __hppa__
- /* reserved space for 2 * sizeof(long), so use correct one */
- /* see SIZE_TAIL macro */
- ((unsigned long *)((char *)ptr + amount))[-2] = MAGIC2;
-# else
- ((unsigned long *)((char *)ptr + amount))[-1] = MAGIC2;
-# endif /* __hppa__ */
-#endif /* SIZE_TAIL */
- ptr = (unsigned long *)((char *)ptr + SIZE_HEADER);
- LOG_ALLOC("Xalloc-L", amount, ptr);
- return ptr;
- } /* else fall through to 'Out of memory' */
-#endif /* HAS_MMAP_ANON || MMAP_DEV_ZERO */
- } else {
- /*
- * medium sized block
- */
- /* 'normal' malloc() */
- ptr=(unsigned long *)calloc(1,amount+SIZE_HEADER+TAIL_SIZE);
- if (ptr != (unsigned long *)NULL) {
- ptr[0] = amount;
-#ifdef XALLOC_DEBUG
- ptr[1] = MAGIC;
-#endif /* XALLOC_DEBUG */
-#ifdef SIZE_TAIL
- *(unsigned long *)((char *)ptr + amount + SIZE_HEADER) = MAGIC2;
-#endif /* SIZE_TAIL */
- ptr = (unsigned long *)((char *)ptr + SIZE_HEADER);
- LOG_ALLOC("Xalloc-M", amount, ptr);
- return ptr;
- }
- }
- if (Must_have_memory)
- FatalError("Out of memory");
- LOG_ALLOC("Xalloc-oom", amount, 0);
- return (unsigned long *)NULL;
-}
-
-/*****************
- * XNFalloc
- * "no failure" realloc, alternate interface to Xalloc w/o Must_have_memory
- *****************/
-
-unsigned long *
-XNFalloc (amount)
- unsigned long amount;
-{
- register unsigned long *ptr;
-
- /* zero size requested */
- if (amount == 0) {
- LOG_ALLOC("XNFalloc=0", amount, 0);
- return (unsigned long *)NULL;
- }
- /* negative size (or size > 2GB) - what do we do? */
- if ((long)amount < 0) {
- /* Diagnostic */
-#ifdef FATALERRORS
- FatalError("Xalloc: XNFalloc(<0)\n");
-#else
- ErrorF("Xalloc warning: XNFalloc(<0) ignored..\n");
-#endif
- LOG_ALLOC("XNFalloc<0", amount, 0);
- return (unsigned long *)NULL;
- }
- ptr = Xalloc(amount);
- if (!ptr)
- {
- FatalError("Out of memory");
- }
- return ptr;
-}
-
-/*****************
- * Xcalloc
- *****************/
-
-unsigned long *
-Xcalloc (amount)
- unsigned long amount;
-{
- unsigned long *ret;
-
- ret = Xalloc (amount);
- if (ret
-#if defined(HAS_MMAP_ANON) || defined(MMAP_DEV_ZERO)
- && (amount < MIN_LARGE) /* mmaped anonymous mem is already cleared */
-#endif
- )
- bzero ((char *) ret, (int) amount);
- return ret;
-}
-
-/*****************
- * Xrealloc
- *****************/
-
-unsigned long *
-Xrealloc (ptr, amount)
- register pointer ptr;
- unsigned long amount;
-{
- register unsigned long *new_ptr;
-
- /* zero size requested */
- if (amount == 0) {
- if (ptr)
- Xfree(ptr);
- LOG_REALLOC("Xrealloc=0", ptr, amount, 0);
- return (unsigned long *)NULL;
- }
- /* negative size (or size > 2GB) - what do we do? */
- if ((long)amount < 0) {
- /* Diagnostic */
-#ifdef FATALERRORS
- FatalError("Xalloc: Xrealloc(<0)\n");
-#else
- ErrorF("Xalloc warning: Xrealloc(<0) ignored..\n");
-#endif
- if (ptr)
- Xfree(ptr); /* ?? */
- LOG_REALLOC("Xrealloc<0", ptr, amount, 0);
- return (unsigned long *)NULL;
- }
-
- new_ptr = Xalloc(amount);
- if ( (new_ptr) && (ptr) ) {
- unsigned long old_size;
- old_size = ((unsigned long *)ptr)[-2];
-#ifdef XALLOC_DEBUG
- if (MAGIC != ((unsigned long *)ptr)[-1]) {
-#ifdef FATALERRORS
- FatalError("Xalloc error: header corrupt in Xrealloc() :-(\n");
-#else
- ErrorF("Xalloc error: header corrupt in Xrealloc() :-(\n");
-#endif
- LOG_REALLOC("Xalloc error: header corrupt in Xrealloc() :-(",
- ptr, amount, 0);
- return (unsigned long *)NULL;
- }
-#endif /* XALLOC_DEBUG */
- /* copy min(old size, new size) */
- memcpy((char *)new_ptr, (char *)ptr, (amount < old_size ? amount : old_size));
- }
- if (ptr)
- Xfree(ptr);
- if (new_ptr) {
- LOG_REALLOC("Xrealloc", ptr, amount, new_ptr);
- return new_ptr;
- }
- if (Must_have_memory)
- FatalError("Out of memory");
- LOG_REALLOC("Xrealloc", ptr, amount, 0);
- return (unsigned long *)NULL;
-}
-
-/*****************
- * XNFrealloc
- * "no failure" realloc, alternate interface to Xrealloc w/o Must_have_memory
- *****************/
-
-unsigned long *
-XNFrealloc (ptr, amount)
- register pointer ptr;
- unsigned long amount;
-{
- if (( ptr = (pointer)Xrealloc( ptr, amount ) ) == NULL)
- {
- FatalError( "Out of memory" );
- }
- return ((unsigned long *)ptr);
-}
-
-/*****************
- * Xfree
- * calls free
- *****************/
-
-void
-Xfree(ptr)
- register pointer ptr;
-{
- unsigned long size;
- unsigned long *pheader;
-
- /* free(NULL) IS valid :-( - and widely used throughout the server.. */
- if (!ptr)
- return;
-
- pheader = (unsigned long *)((char *)ptr - SIZE_HEADER);
-#ifdef XALLOC_DEBUG
- if (MAGIC != pheader[1]) {
- /* Diagnostic */
-#ifdef FATALERRORS
- FatalError("Xalloc error: Header corrupt in Xfree() :-(\n");
-#else
- ErrorF("Xalloc error: Header corrupt in Xfree() :-(\n");
-#endif
- LOG_FREE("Xalloc error: Header corrupt in Xfree() :-(", ptr);
- return;
- }
-#endif /* XALLOC_DEBUG */
-
- size = pheader[0];
- if (size <= MAX_SMALL) {
- int indx;
- /*
- * small block
- */
-#ifdef SIZE_TAIL
- if (MAGIC2 != *(unsigned long *)((char *)ptr + size)) {
- /* Diagnostic */
-#ifdef FATALERRORS
- FatalError("Xalloc error: Tail corrupt in Xfree() for small block (adr=0x%x, val=0x%x)\n",(char *)ptr + size,*(unsigned long *)((char *)ptr + size));
-#else
- ErrorF("Xalloc error: Tail corrupt in Xfree() for small block (adr=0x%x, val=0x%x)\n",(char *)ptr + size,*(unsigned long *)((char *)ptr + size));
-#endif
- LOG_FREE("Xalloc error: Tail corrupt in Xfree() for small block", ptr);
- return;
- }
-#endif /* SIZE_TAIL */
-
-#ifdef XFREE_ERASES
- memset(ptr,0xF0,size);
-#endif /* XFREE_ERASES */
-
- /* put this small block at the head of the list */
- indx = (size-1) / SIZE_STEPS;
- *(unsigned long **)(ptr) = free_lists[indx];
- free_lists[indx] = (unsigned long *)ptr;
- LOG_FREE("Xfree", ptr);
- return;
-
-#if defined(HAS_MMAP_ANON) || defined(MMAP_DEV_ZERO)
- } else if (size >= MIN_LARGE) {
- /*
- * large block
- */
-#ifdef SIZE_TAIL
- if (MAGIC2 != ((unsigned long *)((char *)ptr + size))[0]) {
- /* Diagnostic */
-#ifdef FATALERRORS
- FatalError("Xalloc error: Tail corrupt in Xfree() for big block (adr=0x%x, val=0x%x)\n",(char *)ptr+size,((unsigned long *)((char *)ptr + size))[0]);
-#else
- ErrorF("Xalloc error: Tail corrupt in Xfree() for big block (adr=0x%x, val=0x%x)\n",(char *)ptr+size,((unsigned long *)((char *)ptr + size))[0]);
-#endif
- LOG_FREE("Xalloc error: Tail corrupt in Xfree() for big block", ptr);
- return;
- }
- size += SIZE_TAIL;
-#endif /* SIZE_TAIL */
-
- LOG_FREE("Xfree", ptr);
- size += SIZE_HEADER;
- munmap((caddr_t)pheader, (size_t)size);
- /* no need to clear - mem is inaccessible after munmap.. */
-#endif /* HAS_MMAP_ANON */
-
- } else {
- /*
- * medium sized block
- */
-#ifdef SIZE_TAIL
- if (MAGIC2 != *(unsigned long *)((char *)ptr + size)) {
- /* Diagnostic */
-#ifdef FATALERRORS
- FatalError("Xalloc error: Tail corrupt in Xfree() for medium block (adr=0x%x, val=0x%x)\n",(char *)ptr + size,*(unsigned long *)((char *)ptr + size));
-#else
- ErrorF("Xalloc error: Tail corrupt in Xfree() for medium block (adr=0x%x, val=0x%x)\n",(char *)ptr + size,*(unsigned long *)((char *)ptr + size));
-#endif
- LOG_FREE("Xalloc error: Tail corrupt in Xfree() for medium block", ptr);
- return;
- }
-#endif /* SIZE_TAIL */
-
-#ifdef XFREE_ERASES
- memset(pheader,0xF0,size+SIZE_HEADER);
-#endif /* XFREE_ERASES */
-
- LOG_FREE("Xfree", ptr);
- free((char *)pheader);
- }
-}
-
-void
-OsInitAllocator ()
-{
- static Bool beenhere = FALSE;
-
- if (beenhere)
- return;
- beenhere = TRUE;
-
-#if defined(HAS_MMAP_ANON) || defined (MMAP_DEV_ZERO)
-#if defined(_SC_PAGESIZE) /* || defined(linux) */
- pagesize = sysconf(_SC_PAGESIZE);
-#else
-#ifdef HAS_GETPAGESIZE
- pagesize = getpagesize();
-#else
- pagesize = PAGE_SIZE;
-#endif
-#endif
-#endif
-
- /* set up linked lists of free blocks */
- bzero ((char *) free_lists, MAX_SMALL/SIZE_STEPS*sizeof(unsigned long *));
-
-#ifdef MMAP_DEV_ZERO
- /* open /dev/zero on systems that have mmap, but not MAP_ANON */
- if (devzerofd < 0) {
- if ((devzerofd = open("/dev/zero", O_RDWR, 0)) < 0)
- FatalError("OsInitAllocator: Cannot open /dev/zero (errno=%d)\n",
- errno);
- }
-#endif
-
-#ifdef XALLOC_LOG
- /* reset the log file to zero length */
- {
- FILE *f;
- f = fopen(XALLOC_LOG_FILE, "w");
- if (NULL!=f)
- fclose(f);
- }
-#endif
-}
-
-#else /* !INTERNAL_MALLOC */
-/* This is to avoid an empty .o */
-static int no_internal_xalloc;
-#endif /* INTERNAL_MALLOC */
projects / rdpsrv / blobdiff