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-rw-r--r--kpdf/xpdf/goo/gmem.cc315
1 files changed, 315 insertions, 0 deletions
diff --git a/kpdf/xpdf/goo/gmem.cc b/kpdf/xpdf/goo/gmem.cc
new file mode 100644
index 00000000..d8962aba
--- /dev/null
+++ b/kpdf/xpdf/goo/gmem.cc
@@ -0,0 +1,315 @@
+/*
+ * gmem.c
+ *
+ * Memory routines with out-of-memory checking.
+ *
+ * Copyright 1996-2003 Glyph & Cog, LLC
+ */
+
+#include <aconf.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <limits.h>
+#include "gmem.h"
+
+#ifdef DEBUG_MEM
+
+typedef struct _GMemHdr {
+ unsigned int magic;
+ int size;
+ int index;
+ struct _GMemHdr *next, *prev;
+} GMemHdr;
+
+#define gMemHdrSize ((sizeof(GMemHdr) + 7) & ~7)
+#define gMemTrlSize (sizeof(long))
+
+#define gMemMagic 0xabcd9999
+
+#if gmemTrlSize==8
+#define gMemDeadVal 0xdeadbeefdeadbeefUL
+#else
+#define gMemDeadVal 0xdeadbeefUL
+#endif
+
+/* round data size so trailer will be aligned */
+#define gMemDataSize(size) \
+ ((((size) + gMemTrlSize - 1) / gMemTrlSize) * gMemTrlSize)
+
+static GMemHdr *gMemHead = NULL;
+static GMemHdr *gMemTail = NULL;
+
+static int gMemIndex = 0;
+static int gMemAlloc = 0;
+static int gMemInUse = 0;
+
+#endif /* DEBUG_MEM */
+
+void *gmalloc(int size) GMEM_EXCEP {
+#ifdef DEBUG_MEM
+ int size1;
+ char *mem;
+ GMemHdr *hdr;
+ void *data;
+ unsigned long *trl, *p;
+
+ if (size < 0) {
+#if USE_EXCEPTIONS
+ throw GMemException();
+#else
+ fprintf(stderr, "Invalid memory allocation size\n");
+ exit(1);
+#endif
+ }
+ if (size == 0) {
+ return NULL;
+ }
+ size1 = gMemDataSize(size);
+ if (!(mem = (char *)malloc(size1 + gMemHdrSize + gMemTrlSize))) {
+#if USE_EXCEPTIONS
+ throw GMemException();
+#else
+ fprintf(stderr, "Out of memory\n");
+ exit(1);
+#endif
+ }
+ hdr = (GMemHdr *)mem;
+ data = (void *)(mem + gMemHdrSize);
+ trl = (unsigned long *)(mem + gMemHdrSize + size1);
+ hdr->magic = gMemMagic;
+ hdr->size = size;
+ hdr->index = gMemIndex++;
+ if (gMemTail) {
+ gMemTail->next = hdr;
+ hdr->prev = gMemTail;
+ gMemTail = hdr;
+ } else {
+ hdr->prev = NULL;
+ gMemHead = gMemTail = hdr;
+ }
+ hdr->next = NULL;
+ ++gMemAlloc;
+ gMemInUse += size;
+ for (p = (unsigned long *)data; p <= trl; ++p) {
+ *p = gMemDeadVal;
+ }
+ return data;
+#else
+ void *p;
+
+ if (size < 0) {
+#if USE_EXCEPTIONS
+ throw GMemException();
+#else
+ fprintf(stderr, "Invalid memory allocation size\n");
+ exit(1);
+#endif
+ }
+ if (size == 0) {
+ return NULL;
+ }
+ if (!(p = malloc(size))) {
+#if USE_EXCEPTIONS
+ throw GMemException();
+#else
+ fprintf(stderr, "Out of memory\n");
+ exit(1);
+#endif
+ }
+ return p;
+#endif
+}
+
+void *grealloc(void *p, int size) GMEM_EXCEP {
+#ifdef DEBUG_MEM
+ GMemHdr *hdr;
+ void *q;
+ int oldSize;
+
+ if (size < 0) {
+#if USE_EXCEPTIONS
+ throw GMemException();
+#else
+ fprintf(stderr, "Invalid memory allocation size\n");
+ exit(1);
+#endif
+ }
+ if (size == 0) {
+ if (p) {
+ gfree(p);
+ }
+ return NULL;
+ }
+ if (p) {
+ hdr = (GMemHdr *)((char *)p - gMemHdrSize);
+ oldSize = hdr->size;
+ q = gmalloc(size);
+ memcpy(q, p, size < oldSize ? size : oldSize);
+ gfree(p);
+ } else {
+ q = gmalloc(size);
+ }
+ return q;
+#else
+ void *q;
+
+ if (size < 0) {
+#if USE_EXCEPTIONS
+ throw GMemException();
+#else
+ fprintf(stderr, "Invalid memory allocation size\n");
+ exit(1);
+#endif
+ }
+ if (size == 0) {
+ if (p) {
+ free(p);
+ }
+ return NULL;
+ }
+ if (p) {
+ q = realloc(p, size);
+ } else {
+ q = malloc(size);
+ }
+ if (!q) {
+#if USE_EXCEPTIONS
+ throw GMemException();
+#else
+ fprintf(stderr, "Out of memory\n");
+ exit(1);
+#endif
+ }
+ return q;
+#endif
+}
+
+void *gmallocn(int nObjs, int objSize) GMEM_EXCEP {
+ int n;
+
+ if (nObjs == 0) {
+ return NULL;
+ }
+ n = nObjs * objSize;
+ if (objSize <= 0 || nObjs < 0 || nObjs >= INT_MAX / objSize) {
+#if USE_EXCEPTIONS
+ throw GMemException();
+#else
+ fprintf(stderr, "Bogus memory allocation size\n");
+ exit(1);
+#endif
+ }
+ return gmalloc(n);
+}
+
+void *gmallocn_checkoverflow(int nObjs, int objSize) GMEM_EXCEP {
+ int n;
+
+ if (nObjs == 0) {
+ return NULL;
+ }
+ n = nObjs * objSize;
+ if (objSize <= 0 || nObjs < 0 || nObjs >= INT_MAX / objSize) {
+#if USE_EXCEPTIONS
+ throw GMemException();
+#else
+ fprintf(stderr, "Bogus memory allocation size\n");
+ return NULL;
+#endif
+ }
+ return gmalloc(n);
+}
+
+
+void *greallocn(void *p, int nObjs, int objSize) GMEM_EXCEP {
+ int n;
+
+ if (nObjs == 0) {
+ if (p) {
+ gfree(p);
+ }
+ return NULL;
+ }
+ n = nObjs * objSize;
+ if (objSize <= 0 || nObjs < 0 || nObjs >= INT_MAX / objSize) {
+#if USE_EXCEPTIONS
+ throw GMemException();
+#else
+ fprintf(stderr, "Bogus memory allocation size\n");
+ exit(1);
+#endif
+ }
+ return grealloc(p, n);
+}
+
+void gfree(void *p) {
+#ifdef DEBUG_MEM
+ int size;
+ GMemHdr *hdr;
+ unsigned long *trl, *clr;
+
+ if (p) {
+ hdr = (GMemHdr *)((char *)p - gMemHdrSize);
+ if (hdr->magic == gMemMagic &&
+ ((hdr->prev == NULL) == (hdr == gMemHead)) &&
+ ((hdr->next == NULL) == (hdr == gMemTail))) {
+ if (hdr->prev) {
+ hdr->prev->next = hdr->next;
+ } else {
+ gMemHead = hdr->next;
+ }
+ if (hdr->next) {
+ hdr->next->prev = hdr->prev;
+ } else {
+ gMemTail = hdr->prev;
+ }
+ --gMemAlloc;
+ gMemInUse -= hdr->size;
+ size = gMemDataSize(hdr->size);
+ trl = (unsigned long *)((char *)hdr + gMemHdrSize + size);
+ if (*trl != gMemDeadVal) {
+ fprintf(stderr, "Overwrite past end of block %d at address %p\n",
+ hdr->index, p);
+ }
+ for (clr = (unsigned long *)hdr; clr <= trl; ++clr) {
+ *clr = gMemDeadVal;
+ }
+ free(hdr);
+ } else {
+ fprintf(stderr, "Attempted to free bad address %p\n", p);
+ }
+ }
+#else
+ if (p) {
+ free(p);
+ }
+#endif
+}
+
+#ifdef DEBUG_MEM
+void gMemReport(FILE *f) {
+ GMemHdr *p;
+
+ fprintf(f, "%d memory allocations in all\n", gMemIndex);
+ if (gMemAlloc > 0) {
+ fprintf(f, "%d memory blocks left allocated:\n", gMemAlloc);
+ fprintf(f, " index size\n");
+ fprintf(f, "-------- --------\n");
+ for (p = gMemHead; p; p = p->next) {
+ fprintf(f, "%8d %8d\n", p->index, p->size);
+ }
+ } else {
+ fprintf(f, "No memory blocks left allocated\n");
+ }
+}
+#endif
+
+char *copyString(char *s) {
+ char *s1;
+
+ s1 = (char *)gmalloc(strlen(s) + 1);
+ strcpy(s1, s);
+ return s1;
+}
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