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-rw-r--r--libxml2-2.9.10/xmlmemory.c1163
1 files changed, 1163 insertions, 0 deletions
diff --git a/libxml2-2.9.10/xmlmemory.c b/libxml2-2.9.10/xmlmemory.c
new file mode 100644
index 0000000..6f16c4b
--- /dev/null
+++ b/libxml2-2.9.10/xmlmemory.c
@@ -0,0 +1,1163 @@
+/*
+ * xmlmemory.c: libxml memory allocator wrapper.
+ *
+ * daniel@veillard.com
+ */
+
+#define IN_LIBXML
+#include "libxml.h"
+
+#include <string.h>
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#else
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
+#endif
+
+#ifdef HAVE_CTYPE_H
+#include <ctype.h>
+#endif
+
+/* #define DEBUG_MEMORY */
+
+/**
+ * MEM_LIST:
+ *
+ * keep track of all allocated blocks for error reporting
+ * Always build the memory list !
+ */
+#ifdef DEBUG_MEMORY_LOCATION
+#ifndef MEM_LIST
+#define MEM_LIST /* keep a list of all the allocated memory blocks */
+#endif
+#endif
+
+#include <libxml/globals.h> /* must come before xmlmemory.h */
+#include <libxml/xmlmemory.h>
+#include <libxml/xmlerror.h>
+#include <libxml/threads.h>
+
+static int xmlMemInitialized = 0;
+static unsigned long debugMemSize = 0;
+static unsigned long debugMemBlocks = 0;
+static unsigned long debugMaxMemSize = 0;
+static xmlMutexPtr xmlMemMutex = NULL;
+
+void xmlMallocBreakpoint(void);
+
+/************************************************************************
+ * *
+ * Macros, variables and associated types *
+ * *
+ ************************************************************************/
+
+#if !defined(LIBXML_THREAD_ENABLED) && !defined(LIBXML_THREAD_ALLOC_ENABLED)
+#ifdef xmlMalloc
+#undef xmlMalloc
+#endif
+#ifdef xmlRealloc
+#undef xmlRealloc
+#endif
+#ifdef xmlMemStrdup
+#undef xmlMemStrdup
+#endif
+#endif
+
+/*
+ * Each of the blocks allocated begin with a header containing informations
+ */
+
+#define MEMTAG 0x5aa5
+
+#define MALLOC_TYPE 1
+#define REALLOC_TYPE 2
+#define STRDUP_TYPE 3
+#define MALLOC_ATOMIC_TYPE 4
+#define REALLOC_ATOMIC_TYPE 5
+
+typedef struct memnod {
+ unsigned int mh_tag;
+ unsigned int mh_type;
+ unsigned long mh_number;
+ size_t mh_size;
+#ifdef MEM_LIST
+ struct memnod *mh_next;
+ struct memnod *mh_prev;
+#endif
+ const char *mh_file;
+ unsigned int mh_line;
+} MEMHDR;
+
+
+#ifdef SUN4
+#define ALIGN_SIZE 16
+#else
+#define ALIGN_SIZE sizeof(double)
+#endif
+#define HDR_SIZE sizeof(MEMHDR)
+#define RESERVE_SIZE (((HDR_SIZE + (ALIGN_SIZE-1)) \
+ / ALIGN_SIZE ) * ALIGN_SIZE)
+
+#define MAX_SIZE_T ((size_t)-1)
+
+#define CLIENT_2_HDR(a) ((void *) (((char *) (a)) - RESERVE_SIZE))
+#define HDR_2_CLIENT(a) ((void *) (((char *) (a)) + RESERVE_SIZE))
+
+
+static unsigned int block=0;
+static unsigned int xmlMemStopAtBlock = 0;
+static void *xmlMemTraceBlockAt = NULL;
+#ifdef MEM_LIST
+static MEMHDR *memlist = NULL;
+#endif
+
+static void debugmem_tag_error(void *addr);
+#ifdef MEM_LIST
+static void debugmem_list_add(MEMHDR *);
+static void debugmem_list_delete(MEMHDR *);
+#endif
+#define Mem_Tag_Err(a) debugmem_tag_error(a);
+
+#ifndef TEST_POINT
+#define TEST_POINT
+#endif
+
+/**
+ * xmlMallocBreakpoint:
+ *
+ * Breakpoint to use in conjunction with xmlMemStopAtBlock. When the block
+ * number reaches the specified value this function is called. One need to add a breakpoint
+ * to it to get the context in which the given block is allocated.
+ */
+
+void
+xmlMallocBreakpoint(void) {
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlMallocBreakpoint reached on block %d\n", xmlMemStopAtBlock);
+}
+
+/**
+ * xmlMallocLoc:
+ * @size: an int specifying the size in byte to allocate.
+ * @file: the file name or NULL
+ * @line: the line number
+ *
+ * a malloc() equivalent, with logging of the allocation info.
+ *
+ * Returns a pointer to the allocated area or NULL in case of lack of memory.
+ */
+
+void *
+xmlMallocLoc(size_t size, const char * file, int line)
+{
+ MEMHDR *p;
+ void *ret;
+
+ if (!xmlMemInitialized) xmlInitMemory();
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "Malloc(%d)\n",size);
+#endif
+
+ TEST_POINT
+
+ if (size > (MAX_SIZE_T - RESERVE_SIZE)) {
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlMallocLoc : Unsigned overflow\n");
+ xmlMemoryDump();
+ return(NULL);
+ }
+
+ p = (MEMHDR *) malloc(RESERVE_SIZE+size);
+
+ if (!p) {
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlMallocLoc : Out of free space\n");
+ xmlMemoryDump();
+ return(NULL);
+ }
+ p->mh_tag = MEMTAG;
+ p->mh_size = size;
+ p->mh_type = MALLOC_TYPE;
+ p->mh_file = file;
+ p->mh_line = line;
+ xmlMutexLock(xmlMemMutex);
+ p->mh_number = ++block;
+ debugMemSize += size;
+ debugMemBlocks++;
+ if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize;
+#ifdef MEM_LIST
+ debugmem_list_add(p);
+#endif
+ xmlMutexUnlock(xmlMemMutex);
+
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "Malloc(%d) Ok\n",size);
+#endif
+
+ if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint();
+
+ ret = HDR_2_CLIENT(p);
+
+ if (xmlMemTraceBlockAt == ret) {
+ xmlGenericError(xmlGenericErrorContext,
+ "%p : Malloc(%lu) Ok\n", xmlMemTraceBlockAt,
+ (long unsigned)size);
+ xmlMallocBreakpoint();
+ }
+
+ TEST_POINT
+
+ return(ret);
+}
+
+/**
+ * xmlMallocAtomicLoc:
+ * @size: an unsigned int specifying the size in byte to allocate.
+ * @file: the file name or NULL
+ * @line: the line number
+ *
+ * a malloc() equivalent, with logging of the allocation info.
+ *
+ * Returns a pointer to the allocated area or NULL in case of lack of memory.
+ */
+
+void *
+xmlMallocAtomicLoc(size_t size, const char * file, int line)
+{
+ MEMHDR *p;
+ void *ret;
+
+ if (!xmlMemInitialized) xmlInitMemory();
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "Malloc(%d)\n",size);
+#endif
+
+ TEST_POINT
+
+ if (size > (MAX_SIZE_T - RESERVE_SIZE)) {
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlMallocAtomicLoc : Unsigned overflow\n");
+ xmlMemoryDump();
+ return(NULL);
+ }
+
+ p = (MEMHDR *) malloc(RESERVE_SIZE+size);
+
+ if (!p) {
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlMallocAtomicLoc : Out of free space\n");
+ xmlMemoryDump();
+ return(NULL);
+ }
+ p->mh_tag = MEMTAG;
+ p->mh_size = size;
+ p->mh_type = MALLOC_ATOMIC_TYPE;
+ p->mh_file = file;
+ p->mh_line = line;
+ xmlMutexLock(xmlMemMutex);
+ p->mh_number = ++block;
+ debugMemSize += size;
+ debugMemBlocks++;
+ if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize;
+#ifdef MEM_LIST
+ debugmem_list_add(p);
+#endif
+ xmlMutexUnlock(xmlMemMutex);
+
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "Malloc(%d) Ok\n",size);
+#endif
+
+ if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint();
+
+ ret = HDR_2_CLIENT(p);
+
+ if (xmlMemTraceBlockAt == ret) {
+ xmlGenericError(xmlGenericErrorContext,
+ "%p : Malloc(%lu) Ok\n", xmlMemTraceBlockAt,
+ (long unsigned)size);
+ xmlMallocBreakpoint();
+ }
+
+ TEST_POINT
+
+ return(ret);
+}
+/**
+ * xmlMemMalloc:
+ * @size: an int specifying the size in byte to allocate.
+ *
+ * a malloc() equivalent, with logging of the allocation info.
+ *
+ * Returns a pointer to the allocated area or NULL in case of lack of memory.
+ */
+
+void *
+xmlMemMalloc(size_t size)
+{
+ return(xmlMallocLoc(size, "none", 0));
+}
+
+/**
+ * xmlReallocLoc:
+ * @ptr: the initial memory block pointer
+ * @size: an int specifying the size in byte to allocate.
+ * @file: the file name or NULL
+ * @line: the line number
+ *
+ * a realloc() equivalent, with logging of the allocation info.
+ *
+ * Returns a pointer to the allocated area or NULL in case of lack of memory.
+ */
+
+void *
+xmlReallocLoc(void *ptr,size_t size, const char * file, int line)
+{
+ MEMHDR *p, *tmp;
+ unsigned long number;
+#ifdef DEBUG_MEMORY
+ size_t oldsize;
+#endif
+
+ if (ptr == NULL)
+ return(xmlMallocLoc(size, file, line));
+
+ if (!xmlMemInitialized) xmlInitMemory();
+ TEST_POINT
+
+ p = CLIENT_2_HDR(ptr);
+ number = p->mh_number;
+ if (xmlMemStopAtBlock == number) xmlMallocBreakpoint();
+ if (p->mh_tag != MEMTAG) {
+ Mem_Tag_Err(p);
+ goto error;
+ }
+ p->mh_tag = ~MEMTAG;
+ xmlMutexLock(xmlMemMutex);
+ debugMemSize -= p->mh_size;
+ debugMemBlocks--;
+#ifdef DEBUG_MEMORY
+ oldsize = p->mh_size;
+#endif
+#ifdef MEM_LIST
+ debugmem_list_delete(p);
+#endif
+ xmlMutexUnlock(xmlMemMutex);
+
+ if (size > (MAX_SIZE_T - RESERVE_SIZE)) {
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlReallocLoc : Unsigned overflow\n");
+ xmlMemoryDump();
+ return(NULL);
+ }
+
+ tmp = (MEMHDR *) realloc(p,RESERVE_SIZE+size);
+ if (!tmp) {
+ free(p);
+ goto error;
+ }
+ p = tmp;
+ if (xmlMemTraceBlockAt == ptr) {
+ xmlGenericError(xmlGenericErrorContext,
+ "%p : Realloced(%lu -> %lu) Ok\n",
+ xmlMemTraceBlockAt, (long unsigned)p->mh_size,
+ (long unsigned)size);
+ xmlMallocBreakpoint();
+ }
+ p->mh_tag = MEMTAG;
+ p->mh_number = number;
+ p->mh_type = REALLOC_TYPE;
+ p->mh_size = size;
+ p->mh_file = file;
+ p->mh_line = line;
+ xmlMutexLock(xmlMemMutex);
+ debugMemSize += size;
+ debugMemBlocks++;
+ if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize;
+#ifdef MEM_LIST
+ debugmem_list_add(p);
+#endif
+ xmlMutexUnlock(xmlMemMutex);
+
+ TEST_POINT
+
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "Realloced(%d to %d) Ok\n", oldsize, size);
+#endif
+ return(HDR_2_CLIENT(p));
+
+error:
+ return(NULL);
+}
+
+/**
+ * xmlMemRealloc:
+ * @ptr: the initial memory block pointer
+ * @size: an int specifying the size in byte to allocate.
+ *
+ * a realloc() equivalent, with logging of the allocation info.
+ *
+ * Returns a pointer to the allocated area or NULL in case of lack of memory.
+ */
+
+void *
+xmlMemRealloc(void *ptr,size_t size) {
+ return(xmlReallocLoc(ptr, size, "none", 0));
+}
+
+/**
+ * xmlMemFree:
+ * @ptr: the memory block pointer
+ *
+ * a free() equivalent, with error checking.
+ */
+void
+xmlMemFree(void *ptr)
+{
+ MEMHDR *p;
+ char *target;
+#ifdef DEBUG_MEMORY
+ size_t size;
+#endif
+
+ if (ptr == NULL)
+ return;
+
+ if (ptr == (void *) -1) {
+ xmlGenericError(xmlGenericErrorContext,
+ "trying to free pointer from freed area\n");
+ goto error;
+ }
+
+ if (xmlMemTraceBlockAt == ptr) {
+ xmlGenericError(xmlGenericErrorContext,
+ "%p : Freed()\n", xmlMemTraceBlockAt);
+ xmlMallocBreakpoint();
+ }
+
+ TEST_POINT
+
+ target = (char *) ptr;
+
+ p = CLIENT_2_HDR(ptr);
+ if (p->mh_tag != MEMTAG) {
+ Mem_Tag_Err(p);
+ goto error;
+ }
+ if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint();
+ p->mh_tag = ~MEMTAG;
+ memset(target, -1, p->mh_size);
+ xmlMutexLock(xmlMemMutex);
+ debugMemSize -= p->mh_size;
+ debugMemBlocks--;
+#ifdef DEBUG_MEMORY
+ size = p->mh_size;
+#endif
+#ifdef MEM_LIST
+ debugmem_list_delete(p);
+#endif
+ xmlMutexUnlock(xmlMemMutex);
+
+ free(p);
+
+ TEST_POINT
+
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "Freed(%d) Ok\n", size);
+#endif
+
+ return;
+
+error:
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlMemFree(%p) error\n", ptr);
+ xmlMallocBreakpoint();
+ return;
+}
+
+/**
+ * xmlMemStrdupLoc:
+ * @str: the initial string pointer
+ * @file: the file name or NULL
+ * @line: the line number
+ *
+ * a strdup() equivalent, with logging of the allocation info.
+ *
+ * Returns a pointer to the new string or NULL if allocation error occurred.
+ */
+
+char *
+xmlMemStrdupLoc(const char *str, const char *file, int line)
+{
+ char *s;
+ size_t size = strlen(str) + 1;
+ MEMHDR *p;
+
+ if (!xmlMemInitialized) xmlInitMemory();
+ TEST_POINT
+
+ if (size > (MAX_SIZE_T - RESERVE_SIZE)) {
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlMemStrdupLoc : Unsigned overflow\n");
+ xmlMemoryDump();
+ return(NULL);
+ }
+
+ p = (MEMHDR *) malloc(RESERVE_SIZE+size);
+ if (!p) {
+ goto error;
+ }
+ p->mh_tag = MEMTAG;
+ p->mh_size = size;
+ p->mh_type = STRDUP_TYPE;
+ p->mh_file = file;
+ p->mh_line = line;
+ xmlMutexLock(xmlMemMutex);
+ p->mh_number = ++block;
+ debugMemSize += size;
+ debugMemBlocks++;
+ if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize;
+#ifdef MEM_LIST
+ debugmem_list_add(p);
+#endif
+ xmlMutexUnlock(xmlMemMutex);
+
+ s = (char *) HDR_2_CLIENT(p);
+
+ if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint();
+
+ strcpy(s,str);
+
+ TEST_POINT
+
+ if (xmlMemTraceBlockAt == s) {
+ xmlGenericError(xmlGenericErrorContext,
+ "%p : Strdup() Ok\n", xmlMemTraceBlockAt);
+ xmlMallocBreakpoint();
+ }
+
+ return(s);
+
+error:
+ return(NULL);
+}
+
+/**
+ * xmlMemoryStrdup:
+ * @str: the initial string pointer
+ *
+ * a strdup() equivalent, with logging of the allocation info.
+ *
+ * Returns a pointer to the new string or NULL if allocation error occurred.
+ */
+
+char *
+xmlMemoryStrdup(const char *str) {
+ return(xmlMemStrdupLoc(str, "none", 0));
+}
+
+/**
+ * xmlMemUsed:
+ *
+ * Provides the amount of memory currently allocated
+ *
+ * Returns an int representing the amount of memory allocated.
+ */
+
+int
+xmlMemUsed(void) {
+ int res;
+
+ xmlMutexLock(xmlMemMutex);
+ res = debugMemSize;
+ xmlMutexUnlock(xmlMemMutex);
+ return(res);
+}
+
+/**
+ * xmlMemBlocks:
+ *
+ * Provides the number of memory areas currently allocated
+ *
+ * Returns an int representing the number of blocks
+ */
+
+int
+xmlMemBlocks(void) {
+ int res;
+
+ xmlMutexLock(xmlMemMutex);
+ res = debugMemBlocks;
+ xmlMutexUnlock(xmlMemMutex);
+ return(res);
+}
+
+#ifdef MEM_LIST
+/**
+ * xmlMemContentShow:
+ * @fp: a FILE descriptor used as the output file
+ * @p: a memory block header
+ *
+ * tries to show some content from the memory block
+ */
+
+static void
+xmlMemContentShow(FILE *fp, MEMHDR *p)
+{
+ int i,j,k,len;
+ const char *buf;
+
+ if (p == NULL) {
+ fprintf(fp, " NULL");
+ return;
+ }
+ len = p->mh_size;
+ buf = (const char *) HDR_2_CLIENT(p);
+
+ for (i = 0;i < len;i++) {
+ if (buf[i] == 0) break;
+ if (!isprint((unsigned char) buf[i])) break;
+ }
+ if ((i < 4) && ((buf[i] != 0) || (i == 0))) {
+ if (len >= 4) {
+ MEMHDR *q;
+ void *cur;
+
+ for (j = 0;(j < len -3) && (j < 40);j += 4) {
+ cur = *((void **) &buf[j]);
+ q = CLIENT_2_HDR(cur);
+ p = memlist;
+ k = 0;
+ while (p != NULL) {
+ if (p == q) break;
+ p = p->mh_next;
+ if (k++ > 100) break;
+ }
+ if ((p != NULL) && (p == q)) {
+ fprintf(fp, " pointer to #%lu at index %d",
+ p->mh_number, j);
+ return;
+ }
+ }
+ }
+ } else if ((i == 0) && (buf[i] == 0)) {
+ fprintf(fp," null");
+ } else {
+ if (buf[i] == 0) fprintf(fp," \"%.25s\"", buf);
+ else {
+ fprintf(fp," [");
+ for (j = 0;j < i;j++)
+ fprintf(fp,"%c", buf[j]);
+ fprintf(fp,"]");
+ }
+ }
+}
+#endif
+
+/**
+ * xmlMemDisplayLast:
+ * @fp: a FILE descriptor used as the output file, if NULL, the result is
+ * written to the file .memorylist
+ * @nbBytes: the amount of memory to dump
+ *
+ * the last nbBytes of memory allocated and not freed, useful for dumping
+ * the memory left allocated between two places at runtime.
+ */
+
+void
+xmlMemDisplayLast(FILE *fp, long nbBytes)
+{
+#ifdef MEM_LIST
+ MEMHDR *p;
+ unsigned idx;
+ int nb = 0;
+#endif
+ FILE *old_fp = fp;
+
+ if (nbBytes <= 0)
+ return;
+
+ if (fp == NULL) {
+ fp = fopen(".memorylist", "w");
+ if (fp == NULL)
+ return;
+ }
+
+#ifdef MEM_LIST
+ fprintf(fp," Last %li MEMORY ALLOCATED : %lu, MAX was %lu\n",
+ nbBytes, debugMemSize, debugMaxMemSize);
+ fprintf(fp,"BLOCK NUMBER SIZE TYPE\n");
+ idx = 0;
+ xmlMutexLock(xmlMemMutex);
+ p = memlist;
+ while ((p) && (nbBytes > 0)) {
+ fprintf(fp,"%-5u %6lu %6lu ",idx++,p->mh_number,
+ (unsigned long)p->mh_size);
+ switch (p->mh_type) {
+ case STRDUP_TYPE:fprintf(fp,"strdup() in ");break;
+ case MALLOC_TYPE:fprintf(fp,"malloc() in ");break;
+ case REALLOC_TYPE:fprintf(fp,"realloc() in ");break;
+ case MALLOC_ATOMIC_TYPE:fprintf(fp,"atomicmalloc() in ");break;
+ case REALLOC_ATOMIC_TYPE:fprintf(fp,"atomicrealloc() in ");break;
+ default:
+ fprintf(fp,"Unknown memory block, may be corrupted");
+ xmlMutexUnlock(xmlMemMutex);
+ if (old_fp == NULL)
+ fclose(fp);
+ return;
+ }
+ if (p->mh_file != NULL) fprintf(fp,"%s(%u)", p->mh_file, p->mh_line);
+ if (p->mh_tag != MEMTAG)
+ fprintf(fp," INVALID");
+ nb++;
+ if (nb < 100)
+ xmlMemContentShow(fp, p);
+ else
+ fprintf(fp," skip");
+
+ fprintf(fp,"\n");
+ nbBytes -= (unsigned long)p->mh_size;
+ p = p->mh_next;
+ }
+ xmlMutexUnlock(xmlMemMutex);
+#else
+ fprintf(fp,"Memory list not compiled (MEM_LIST not defined !)\n");
+#endif
+ if (old_fp == NULL)
+ fclose(fp);
+}
+
+/**
+ * xmlMemDisplay:
+ * @fp: a FILE descriptor used as the output file, if NULL, the result is
+ * written to the file .memorylist
+ *
+ * show in-extenso the memory blocks allocated
+ */
+
+void
+xmlMemDisplay(FILE *fp)
+{
+#ifdef MEM_LIST
+ MEMHDR *p;
+ unsigned idx;
+ int nb = 0;
+#if defined(HAVE_LOCALTIME) && defined(HAVE_STRFTIME)
+ time_t currentTime;
+ char buf[500];
+ struct tm * tstruct;
+#endif
+#endif
+ FILE *old_fp = fp;
+
+ if (fp == NULL) {
+ fp = fopen(".memorylist", "w");
+ if (fp == NULL)
+ return;
+ }
+
+#ifdef MEM_LIST
+#if defined(HAVE_LOCALTIME) && defined(HAVE_STRFTIME)
+ currentTime = time(NULL);
+ tstruct = localtime(&currentTime);
+ strftime(buf, sizeof(buf) - 1, "%I:%M:%S %p", tstruct);
+ fprintf(fp," %s\n\n", buf);
+#endif
+
+
+ fprintf(fp," MEMORY ALLOCATED : %lu, MAX was %lu\n",
+ debugMemSize, debugMaxMemSize);
+ fprintf(fp,"BLOCK NUMBER SIZE TYPE\n");
+ idx = 0;
+ xmlMutexLock(xmlMemMutex);
+ p = memlist;
+ while (p) {
+ fprintf(fp,"%-5u %6lu %6lu ",idx++,p->mh_number,
+ (unsigned long)p->mh_size);
+ switch (p->mh_type) {
+ case STRDUP_TYPE:fprintf(fp,"strdup() in ");break;
+ case MALLOC_TYPE:fprintf(fp,"malloc() in ");break;
+ case REALLOC_TYPE:fprintf(fp,"realloc() in ");break;
+ case MALLOC_ATOMIC_TYPE:fprintf(fp,"atomicmalloc() in ");break;
+ case REALLOC_ATOMIC_TYPE:fprintf(fp,"atomicrealloc() in ");break;
+ default:
+ fprintf(fp,"Unknown memory block, may be corrupted");
+ xmlMutexUnlock(xmlMemMutex);
+ if (old_fp == NULL)
+ fclose(fp);
+ return;
+ }
+ if (p->mh_file != NULL) fprintf(fp,"%s(%u)", p->mh_file, p->mh_line);
+ if (p->mh_tag != MEMTAG)
+ fprintf(fp," INVALID");
+ nb++;
+ if (nb < 100)
+ xmlMemContentShow(fp, p);
+ else
+ fprintf(fp," skip");
+
+ fprintf(fp,"\n");
+ p = p->mh_next;
+ }
+ xmlMutexUnlock(xmlMemMutex);
+#else
+ fprintf(fp,"Memory list not compiled (MEM_LIST not defined !)\n");
+#endif
+ if (old_fp == NULL)
+ fclose(fp);
+}
+
+#ifdef MEM_LIST
+
+static void debugmem_list_add(MEMHDR *p)
+{
+ p->mh_next = memlist;
+ p->mh_prev = NULL;
+ if (memlist) memlist->mh_prev = p;
+ memlist = p;
+#ifdef MEM_LIST_DEBUG
+ if (stderr)
+ Mem_Display(stderr);
+#endif
+}
+
+static void debugmem_list_delete(MEMHDR *p)
+{
+ if (p->mh_next)
+ p->mh_next->mh_prev = p->mh_prev;
+ if (p->mh_prev)
+ p->mh_prev->mh_next = p->mh_next;
+ else memlist = p->mh_next;
+#ifdef MEM_LIST_DEBUG
+ if (stderr)
+ Mem_Display(stderr);
+#endif
+}
+
+#endif
+
+/*
+ * debugmem_tag_error:
+ *
+ * internal error function.
+ */
+
+static void debugmem_tag_error(void *p)
+{
+ xmlGenericError(xmlGenericErrorContext,
+ "Memory tag error occurs :%p \n\t bye\n", p);
+#ifdef MEM_LIST
+ if (stderr)
+ xmlMemDisplay(stderr);
+#endif
+}
+
+#ifdef MEM_LIST
+static FILE *xmlMemoryDumpFile = NULL;
+#endif
+
+/**
+ * xmlMemShow:
+ * @fp: a FILE descriptor used as the output file
+ * @nr: number of entries to dump
+ *
+ * show a show display of the memory allocated, and dump
+ * the @nr last allocated areas which were not freed
+ */
+
+void
+xmlMemShow(FILE *fp, int nr ATTRIBUTE_UNUSED)
+{
+#ifdef MEM_LIST
+ MEMHDR *p;
+#endif
+
+ if (fp != NULL)
+ fprintf(fp," MEMORY ALLOCATED : %lu, MAX was %lu\n",
+ debugMemSize, debugMaxMemSize);
+#ifdef MEM_LIST
+ xmlMutexLock(xmlMemMutex);
+ if (nr > 0) {
+ fprintf(fp,"NUMBER SIZE TYPE WHERE\n");
+ p = memlist;
+ while ((p) && nr > 0) {
+ fprintf(fp,"%6lu %6lu ",p->mh_number,(unsigned long)p->mh_size);
+ switch (p->mh_type) {
+ case STRDUP_TYPE:fprintf(fp,"strdup() in ");break;
+ case MALLOC_TYPE:fprintf(fp,"malloc() in ");break;
+ case MALLOC_ATOMIC_TYPE:fprintf(fp,"atomicmalloc() in ");break;
+ case REALLOC_TYPE:fprintf(fp,"realloc() in ");break;
+ case REALLOC_ATOMIC_TYPE:fprintf(fp,"atomicrealloc() in ");break;
+ default:fprintf(fp," ??? in ");break;
+ }
+ if (p->mh_file != NULL)
+ fprintf(fp,"%s(%u)", p->mh_file, p->mh_line);
+ if (p->mh_tag != MEMTAG)
+ fprintf(fp," INVALID");
+ xmlMemContentShow(fp, p);
+ fprintf(fp,"\n");
+ nr--;
+ p = p->mh_next;
+ }
+ }
+ xmlMutexUnlock(xmlMemMutex);
+#endif /* MEM_LIST */
+}
+
+/**
+ * xmlMemoryDump:
+ *
+ * Dump in-extenso the memory blocks allocated to the file .memorylist
+ */
+
+void
+xmlMemoryDump(void)
+{
+#ifdef MEM_LIST
+ FILE *dump;
+
+ if (debugMaxMemSize == 0)
+ return;
+ dump = fopen(".memdump", "w");
+ if (dump == NULL)
+ xmlMemoryDumpFile = stderr;
+ else xmlMemoryDumpFile = dump;
+
+ xmlMemDisplay(xmlMemoryDumpFile);
+
+ if (dump != NULL) fclose(dump);
+#endif /* MEM_LIST */
+}
+
+
+/****************************************************************
+ * *
+ * Initialization Routines *
+ * *
+ ****************************************************************/
+
+/**
+ * xmlInitMemory:
+ *
+ * Initialize the memory layer.
+ *
+ * Returns 0 on success
+ */
+int
+xmlInitMemory(void)
+{
+#ifdef HAVE_STDLIB_H
+ char *breakpoint;
+#endif
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlInitMemory()\n");
+#endif
+ /*
+ This is really not good code (see Bug 130419). Suggestions for
+ improvement will be welcome!
+ */
+ if (xmlMemInitialized) return(-1);
+ xmlMemInitialized = 1;
+ xmlMemMutex = xmlNewMutex();
+
+#ifdef HAVE_STDLIB_H
+ breakpoint = getenv("XML_MEM_BREAKPOINT");
+ if (breakpoint != NULL) {
+ sscanf(breakpoint, "%ud", &xmlMemStopAtBlock);
+ }
+#endif
+#ifdef HAVE_STDLIB_H
+ breakpoint = getenv("XML_MEM_TRACE");
+ if (breakpoint != NULL) {
+ sscanf(breakpoint, "%p", &xmlMemTraceBlockAt);
+ }
+#endif
+
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlInitMemory() Ok\n");
+#endif
+ return(0);
+}
+
+/**
+ * xmlCleanupMemory:
+ *
+ * Free up all the memory allocated by the library for its own
+ * use. This should not be called by user level code.
+ */
+void
+xmlCleanupMemory(void) {
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlCleanupMemory()\n");
+#endif
+ if (xmlMemInitialized == 0)
+ return;
+
+ xmlFreeMutex(xmlMemMutex);
+ xmlMemMutex = NULL;
+ xmlMemInitialized = 0;
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlCleanupMemory() Ok\n");
+#endif
+}
+
+/**
+ * xmlMemSetup:
+ * @freeFunc: the free() function to use
+ * @mallocFunc: the malloc() function to use
+ * @reallocFunc: the realloc() function to use
+ * @strdupFunc: the strdup() function to use
+ *
+ * Override the default memory access functions with a new set
+ * This has to be called before any other libxml routines !
+ *
+ * Should this be blocked if there was already some allocations
+ * done ?
+ *
+ * Returns 0 on success
+ */
+int
+xmlMemSetup(xmlFreeFunc freeFunc, xmlMallocFunc mallocFunc,
+ xmlReallocFunc reallocFunc, xmlStrdupFunc strdupFunc) {
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlMemSetup()\n");
+#endif
+ if (freeFunc == NULL)
+ return(-1);
+ if (mallocFunc == NULL)
+ return(-1);
+ if (reallocFunc == NULL)
+ return(-1);
+ if (strdupFunc == NULL)
+ return(-1);
+ xmlFree = freeFunc;
+ xmlMalloc = mallocFunc;
+ xmlMallocAtomic = mallocFunc;
+ xmlRealloc = reallocFunc;
+ xmlMemStrdup = strdupFunc;
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlMemSetup() Ok\n");
+#endif
+ return(0);
+}
+
+/**
+ * xmlMemGet:
+ * @freeFunc: place to save the free() function in use
+ * @mallocFunc: place to save the malloc() function in use
+ * @reallocFunc: place to save the realloc() function in use
+ * @strdupFunc: place to save the strdup() function in use
+ *
+ * Provides the memory access functions set currently in use
+ *
+ * Returns 0 on success
+ */
+int
+xmlMemGet(xmlFreeFunc *freeFunc, xmlMallocFunc *mallocFunc,
+ xmlReallocFunc *reallocFunc, xmlStrdupFunc *strdupFunc) {
+ if (freeFunc != NULL) *freeFunc = xmlFree;
+ if (mallocFunc != NULL) *mallocFunc = xmlMalloc;
+ if (reallocFunc != NULL) *reallocFunc = xmlRealloc;
+ if (strdupFunc != NULL) *strdupFunc = xmlMemStrdup;
+ return(0);
+}
+
+/**
+ * xmlGcMemSetup:
+ * @freeFunc: the free() function to use
+ * @mallocFunc: the malloc() function to use
+ * @mallocAtomicFunc: the malloc() function to use for atomic allocations
+ * @reallocFunc: the realloc() function to use
+ * @strdupFunc: the strdup() function to use
+ *
+ * Override the default memory access functions with a new set
+ * This has to be called before any other libxml routines !
+ * The mallocAtomicFunc is specialized for atomic block
+ * allocations (i.e. of areas useful for garbage collected memory allocators
+ *
+ * Should this be blocked if there was already some allocations
+ * done ?
+ *
+ * Returns 0 on success
+ */
+int
+xmlGcMemSetup(xmlFreeFunc freeFunc, xmlMallocFunc mallocFunc,
+ xmlMallocFunc mallocAtomicFunc, xmlReallocFunc reallocFunc,
+ xmlStrdupFunc strdupFunc) {
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlGcMemSetup()\n");
+#endif
+ if (freeFunc == NULL)
+ return(-1);
+ if (mallocFunc == NULL)
+ return(-1);
+ if (mallocAtomicFunc == NULL)
+ return(-1);
+ if (reallocFunc == NULL)
+ return(-1);
+ if (strdupFunc == NULL)
+ return(-1);
+ xmlFree = freeFunc;
+ xmlMalloc = mallocFunc;
+ xmlMallocAtomic = mallocAtomicFunc;
+ xmlRealloc = reallocFunc;
+ xmlMemStrdup = strdupFunc;
+#ifdef DEBUG_MEMORY
+ xmlGenericError(xmlGenericErrorContext,
+ "xmlGcMemSetup() Ok\n");
+#endif
+ return(0);
+}
+
+/**
+ * xmlGcMemGet:
+ * @freeFunc: place to save the free() function in use
+ * @mallocFunc: place to save the malloc() function in use
+ * @mallocAtomicFunc: place to save the atomic malloc() function in use
+ * @reallocFunc: place to save the realloc() function in use
+ * @strdupFunc: place to save the strdup() function in use
+ *
+ * Provides the memory access functions set currently in use
+ * The mallocAtomicFunc is specialized for atomic block
+ * allocations (i.e. of areas useful for garbage collected memory allocators
+ *
+ * Returns 0 on success
+ */
+int
+xmlGcMemGet(xmlFreeFunc *freeFunc, xmlMallocFunc *mallocFunc,
+ xmlMallocFunc *mallocAtomicFunc, xmlReallocFunc *reallocFunc,
+ xmlStrdupFunc *strdupFunc) {
+ if (freeFunc != NULL) *freeFunc = xmlFree;
+ if (mallocFunc != NULL) *mallocFunc = xmlMalloc;
+ if (mallocAtomicFunc != NULL) *mallocAtomicFunc = xmlMallocAtomic;
+ if (reallocFunc != NULL) *reallocFunc = xmlRealloc;
+ if (strdupFunc != NULL) *strdupFunc = xmlMemStrdup;
+ return(0);
+}
+
+#define bottom_xmlmemory
+#include "elfgcchack.h"
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