1 files changed, 222 insertions, 0 deletions
diff --git a/libid3tag/debug.c b/libid3tag/debug.c
new file mode 100644
index 0000000..d91a2c5
--- /dev/null
+++ b/libid3tag/debug.c
@@ -0,0 +1,222 @@
+/*
+ * libid3tag - ID3 tag manipulation library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: debug.c,v 1.8 2004/01/23 09:41:32 rob Exp $
+ */
+
+# ifdef HAVE_CONFIG_H
+#  include "config.h"
+# endif
+
+# include "global.h"
+
+# undef malloc
+# undef calloc
+# undef realloc
+# undef free
+
+# include <stdio.h>
+# include <stdlib.h>
+# include <string.h>
+
+# include "debug.h"
+
+# if defined(DEBUG)
+
+# define DEBUG_MAGIC  0xdeadbeefL
+
+struct debug {
+  char const *file;
+  unsigned int line;
+  size_t size;
+  struct debug *next;
+  struct debug *prev;
+  long int magic;
+};
+
+static struct debug *allocated;
+static int registered;
+
+static
+void check(void)
+{
+  struct debug *debug;
+
+  for (debug = allocated; debug; debug = debug->next) {
+    if (debug->magic != DEBUG_MAGIC) {
+      fprintf(stderr, "memory corruption\n");
+      break;
+    }
+
+    fprintf(stderr, "%s:%u: leaked %lu bytes\n",
+	    debug->file, debug->line, debug->size);
+  }
+}
+
+void *id3_debug_malloc(size_t size, char const *file, unsigned int line)
+{
+  struct debug *debug;
+
+  if (!registered) {
+    atexit(check);
+    registered = 1;
+  }
+
+  if (size == 0)
+    fprintf(stderr, "%s:%u: malloc(0)\n", file, line);
+
+  debug = malloc(sizeof(*debug) + size);
+  if (debug == 0) {
+    fprintf(stderr, "%s:%u: malloc(%lu) failed\n", file, line, size);
+    return 0;
+  }
+
+  debug->magic = DEBUG_MAGIC;
+
+  debug->file = file;
+  debug->line = line;
+  debug->size = size;
+
+  debug->next = allocated;
+  debug->prev = 0;
+
+  if (allocated)
+    allocated->prev = debug;
+
+  allocated = debug;
+
+  return ++debug;
+}
+
+void *id3_debug_calloc(size_t nmemb, size_t size,
+		       char const *file, unsigned int line)
+{
+  void *ptr;
+
+  ptr = id3_debug_malloc(nmemb * size, file, line);
+  if (ptr)
+    memset(ptr, 0, nmemb * size);
+
+  return ptr;
+}
+
+void *id3_debug_realloc(void *ptr, size_t size,
+			char const *file, unsigned int line)
+{
+  struct debug *debug, *new;
+
+  if (size == 0) {
+    id3_debug_free(ptr, file, line);
+    return 0;
+  }
+
+  if (ptr == 0)
+    return id3_debug_malloc(size, file, line);
+
+  debug = ptr;
+  --debug;
+
+  if (debug->magic != DEBUG_MAGIC) {
+    fprintf(stderr, "%s:%u: realloc(%p, %lu) memory not allocated\n",
+	    file, line, ptr, size);
+    return 0;
+  }
+
+  new = realloc(debug, sizeof(*debug) + size);
+  if (new == 0) {
+    fprintf(stderr, "%s:%u: realloc(%p, %lu) failed\n", file, line, ptr, size);
+    return 0;
+  }
+
+  if (allocated == debug)
+    allocated = new;
+
+  debug = new;
+
+  debug->file = file;
+  debug->line = line;
+  debug->size = size;
+
+  if (debug->next)
+    debug->next->prev = debug;
+  if (debug->prev)
+    debug->prev->next = debug;
+
+  return ++debug;
+}
+
+void id3_debug_free(void *ptr, char const *file, unsigned int line)
+{
+  struct debug *debug;
+
+  if (ptr == 0) {
+    fprintf(stderr, "%s:%u: free(0)\n", file, line);
+    return;
+  }
+
+  debug = ptr;
+  --debug;
+
+  if (debug->magic != DEBUG_MAGIC) {
+    fprintf(stderr, "%s:%u: free(%p) memory not allocated\n", file, line, ptr);
+    return;
+  }
+
+  debug->magic = 0;
+
+  if (debug->next)
+    debug->next->prev = debug->prev;
+  if (debug->prev)
+    debug->prev->next = debug->next;
+
+  if (allocated == debug)
+    allocated = debug->next;
+
+  free(debug);
+}
+
+void *id3_debug_release(void *ptr, char const *file, unsigned int line)
+{
+  struct debug *debug;
+
+  if (ptr == 0)
+    return 0;
+
+  debug = ptr;
+  --debug;
+
+  if (debug->magic != DEBUG_MAGIC) {
+    fprintf(stderr, "%s:%u: release(%p) memory not allocated\n",
+	    file, line, ptr);
+    return ptr;
+  }
+
+  if (debug->next)
+    debug->next->prev = debug->prev;
+  if (debug->prev)
+    debug->prev->next = debug->next;
+
+  if (allocated == debug)
+    allocated = debug->next;
+
+  memmove(debug, debug + 1, debug->size);
+
+  return debug;
+}
+
+# endif