Removed memory debugging code. It's a lot easier to check for buffer

overflows with electric fence and memory leaks with memprof.


git-svn-id: http://svn.irssi.org/repos/irssi/trunk@2095 dbcabf3a-b0e7-0310-adc4-f8d773084564

2 files changed, 0 insertions, 417 deletions

diff --git a/src/core/memdebug.c b/src/core/memdebug.c
deleted file mode 100644
index 213d4542..00000000
--- a/src/core/memdebug.c
+++ /dev/null
@@ -1,379 +0,0 @@
-/*
- memdebug.c : irssi
-
-    Copyright (C) 1999-2000 Timo Sirainen
-
-    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
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <glib.h>
-#include <gmodule.h>
-
-/*#define ENABLE_BUFFER_CHECKS*/
-#define BUFFER_CHECK_SIZE 5
-#define MIN_BUFFER_CHECK_SIZE 2
-
-typedef struct {
-	void *p;
-	int size;
-	char *file;
-	int line;
-	char *comment;
-} MEM_REC;
-
-static GHashTable *data = NULL, *preallocs = NULL;
-static const char *comment = "";
-
-static void add_flow_checks(char *p, unsigned long size)
-{
-#ifdef ENABLE_BUFFER_CHECKS
-	int n;
-
-	for (n = 0; n < BUFFER_CHECK_SIZE; n++)
-		p[n] = n ^ 0x7f;
-	for (n = 0; n < BUFFER_CHECK_SIZE; n++)
-		p[size-BUFFER_CHECK_SIZE+n] = n ^ 0x7f;
-#endif
-}
-
-void ig_memcheck_rec(void *key, MEM_REC *rec)
-{
-	guchar *p;
-	int n;
-
-	if (rec->size != INT_MIN){
-		p = rec->p;
-
-		for (n = 0; n < MIN_BUFFER_CHECK_SIZE; n++)
-			if (p[n] != (n ^ 0x7f))
-				g_error("buffer underflow, file %s line %d!\n", rec->file, rec->line);
-
-		for (n = 0; n < MIN_BUFFER_CHECK_SIZE; n++)
-			if (p[rec->size-BUFFER_CHECK_SIZE+n] != (n ^ 0x7f))
-				g_error("buffer overflow, file %s line %d!\n", rec->file, rec->line);
-	}
-}
-
-static void mem_check(void)
-{
-#ifdef ENABLE_BUFFER_CHECKS
-	g_hash_table_foreach(data, (GHFunc) ig_memcheck_rec, NULL);
-#endif
-}
-
-static void data_add(char *p, int size, const char *file, int line)
-{
-	MEM_REC *rec;
-
-	if (size <= 0 && size != INT_MIN)
-		g_error("size = %d, file %s line %d", size, file, line);
-
-	if (data == NULL) {
-		data = g_hash_table_new((GHashFunc) g_direct_hash, (GCompareFunc) g_direct_equal);
-		preallocs = g_hash_table_new((GHashFunc) g_direct_hash, (GCompareFunc) g_direct_equal);
-	}
-
-	if (g_hash_table_lookup(data, p) != NULL)
-		g_error("data_add() already malloc()'ed %p (in %s:%d)", p, file, line);
-
-	rec = g_new(MEM_REC, 1);
-	g_hash_table_insert(data, p, rec);
-
-	rec->p = p;
-	rec->size = size;
-	rec->file = g_strdup(file);
-	rec->line = line;
-	rec->comment = g_strdup(comment);
-
-	if (size == INT_MIN)
-		g_hash_table_insert(preallocs, p-BUFFER_CHECK_SIZE, p);
-	else
-		add_flow_checks(p, size);
-	mem_check();
-}
-
-static void data_clear(char *p)
-{
-	MEM_REC *rec;
-
-	if (g_hash_table_lookup(preallocs, p) != NULL)
-		p += BUFFER_CHECK_SIZE;
-
-	rec = g_hash_table_lookup(data, p);
-	if (rec != NULL && rec->size > 0)
-		memset(p, 'F', rec->size);
-}
-
-static void *data_remove(char *p, const char *file, int line)
-{
-	MEM_REC *rec;
-
-	mem_check();
-
-	if (g_hash_table_lookup(preallocs, p) != NULL) {
-		g_hash_table_remove(preallocs, p);
-		p += BUFFER_CHECK_SIZE;
-	}
-
-	rec = g_hash_table_lookup(data, p);
-	if (rec == NULL) {
-		g_warning("data_remove() data %p not found (in %s:%d)", p, file, line);
-		return p+BUFFER_CHECK_SIZE;
-	}
-
-	g_hash_table_remove(data, p);
-	g_free(rec->file);
-	g_free(rec->comment);
-	g_free(rec);
-
-	return p;
-}
-
-void *ig_malloc(int size, const char *file, int line)
-{
-	char *p;
-
-	size += BUFFER_CHECK_SIZE*2;
-	p = g_malloc(size);
-	data_add(p, size, file, line);
-	return (void *) (p+BUFFER_CHECK_SIZE);
-}
-
-void *ig_malloc0(int size, const char *file, int line)
-{
-	char *p;
-
-	size += BUFFER_CHECK_SIZE*2;
-	p = g_malloc0(size);
-	data_add(p, size, file, line);
-	return (void *) (p+BUFFER_CHECK_SIZE);
-}
-
-void *ig_realloc(void *mem, unsigned long size, const char *file, int line)
-{
-	char *p, *oldmem = mem;
-
-	size += BUFFER_CHECK_SIZE*2;
-	oldmem -= BUFFER_CHECK_SIZE;
-	data_remove(oldmem, file, line);
-	p = g_realloc(oldmem, size);
-	data_add(p, size, file, line);
-	return (void *) (p+BUFFER_CHECK_SIZE);
-}
-
-char *ig_strdup(const char *str, const char *file, int line)
-{
-	void *p;
-
-	if (str == NULL) return NULL;
-
-	p = ig_malloc(strlen(str)+1, file, line);
-	strcpy(p, str);
-
-	return p;
-}
-
-char *ig_strndup(const char *str, int count, const char *file, int line)
-{
-	char *p;
-
-	if (str == NULL) return NULL;
-
-	p = ig_malloc(count+1, file, line);
-	strncpy(p, str, count); p[count] = '\0';
-
-	return p;
-}
-
-char *ig_strconcat(const char *file, int line, const char *str, ...)
-{
-  guint	  l;
-  va_list args;
-  char	  *s;
-  char	  *concat;
-
-  g_return_val_if_fail (str != NULL, NULL);
-
-  l = 1 + strlen (str);
-  va_start (args, str);
-  s = va_arg (args, char*);
-  while (s)
-    {
-      l += strlen (s);
-      s = va_arg (args, char*);
-    }
-  va_end (args);
-
-  concat = ig_malloc(l, file, line);
-  concat[0] = 0;
-
-  strcat (concat, str);
-  va_start (args, str);
-  s = va_arg (args, char*);
-  while (s)
-    {
-      strcat (concat, s);
-      s = va_arg (args, char*);
-    }
-  va_end (args);
-
-  return concat;
-}
-
-char *ig_strdup_printf(const char *file, int line, const char *format, ...)
-{
-	char *buffer, *p;
-	va_list args;
-
-	va_start (args, format);
-	buffer = g_strdup_vprintf (format, args);
-	va_end (args);
-
-	p = ig_malloc(strlen(buffer)+1, file, line);
-	strcpy(p, buffer);
-	g_free(buffer);
-
-	return p;
-}
-
-char *ig_strdup_vprintf(const char *file, int line, const char *format, va_list args)
-{
-	char *buffer, *p;
-
-	buffer = g_strdup_vprintf (format, args);
-
-	p = ig_malloc(strlen(buffer)+1, file, line);
-	strcpy(p, buffer);
-	g_free(buffer);
-
-	return p;
-}
-
-void ig_free(void *p)
-{
-	char *cp = p;
-
-	if (cp == NULL) g_error("ig_free() : trying to free NULL");
-
-	cp -= BUFFER_CHECK_SIZE;
-	data_clear(cp);
-	cp = data_remove(cp, "??", 0);
-	if (cp != NULL) g_free(cp);
-}
-
-GString *ig_string_new(const char *file, int line, const char *str)
-{
-	GString *ret;
-
-	ret = g_string_new(str);
-	data_add((void *) ret, INT_MIN, file, line);
-	return ret;
-}
-
-void ig_string_free(const char *file, int line, GString *str, gboolean freeit)
-{
-	data_remove((void *) str, file, line);
-	if (!freeit)
-		data_add(str->str, INT_MIN, file, line);
-
-	g_string_free(str, freeit);
-}
-
-char *ig_strjoinv(const char *file, int line, const char *sepa, char **array)
-{
-	char *ret;
-
-	ret = g_strjoinv(sepa, array);
-	data_add(ret, INT_MIN, file, line);
-	return ret;
-}
-
-char *ig_dirname(const char *file, int line, const char *fname)
-{
-	char *ret;
-
-	ret = g_dirname(fname);
-	data_add(ret, INT_MIN, file, line);
-	return ret;
-}
-
-char *ig_module_build_path(const char *file, int line, const char *dir, const char *module)
-{
-	char *ret;
-
-	ret = g_module_build_path(dir, module);
-	data_add(ret, INT_MIN, file, line);
-	return ret;
-}
-
-void ig_profile_line(void *key, MEM_REC *rec)
-{
-	char *data;
-
-	if (*rec->comment == '\0' &&
-	    (strcmp(rec->file, "ig_strdup_printf") == 0 ||
-	     strcmp(rec->file, "ig_strdup_vprintf") == 0 ||
-	     strcmp(rec->file, "ig_strconcat") == 0 ||
-	     strcmp(rec->file, "ig_string_free (free = FALSE)") == 0))
-		data = (char *) rec->p + BUFFER_CHECK_SIZE;
-	else
-		data = rec->comment;
-	fprintf(stderr, "%s:%d %d bytes (%s)\n", rec->file, rec->line, rec->size, data);
-}
-
-void ig_mem_profile(void)
-{
-    g_hash_table_foreach(data, (GHFunc) ig_profile_line, NULL);
-    g_hash_table_destroy(data);
-    g_hash_table_destroy(preallocs);
-}
-
-static MEM_REC *largest[10];
-
-void ig_profile_largest(void *key, MEM_REC *rec)
-{
-    int n;
-
-    for (n = 0; n < 10; n++)
-    {
-	if (largest[n] == NULL || rec->size > largest[n]->size)
-	{
-	    g_memmove(largest+n+1, largest+n, sizeof(void *)*(9-n));
-	    largest[n] = rec;
-	}
-    }
-}
-
-void ig_mem_profile_largest(void)
-{
-    /*int n;*/
-
-    memset(&largest, 0, sizeof(MEM_REC*)*10);
-    /*g_hash_table_foreach(data, (GHFunc) ig_profile_largest, NULL);
-
-    for (n = 0; n < 10 && largest[n] != NULL; n++)
-    {
-	ig_profile_line(NULL, largest[n]);
-    }*/
-}
-
-void ig_set_data(const char *data)
-{
-    comment = data;
-}
diff --git a/src/core/memdebug.h b/src/core/memdebug.h
deleted file mode 100644
index 3f328805..00000000
--- a/src/core/memdebug.h
+++ /dev/null
@@ -1,38 +0,0 @@
-#ifdef MEM_DEBUG
-void ig_mem_profile(void);
-
-void ig_set_data(const char *data);
-
-void *ig_malloc(int size, const char *file, int line);
-void *ig_malloc0(int size, const char *file, int line);
-void *ig_realloc(void *mem, unsigned long size, const char *file, int line);
-char *ig_strdup(const char *str, const char *file, int line);
-char *ig_strndup(const char *str, int count, const char *file, int line);
-char *ig_strconcat(const char *file, int line, const char *str, ...);
-char *ig_strdup_printf(const char *file, int line, const char *format, ...) G_GNUC_PRINTF (3, 4);
-char *ig_strdup_vprintf(const char *file, int line, const char *format, va_list args);
-void ig_free(void *p);
-GString *ig_string_new(const char *file, int line, const char *str);
-void ig_string_free(const char *file, int line, GString *str, int freeit);
-char *ig_strjoinv(const char *file, int line, const char *sepa, char **array);
-char *ig_dirname(const char *file, int line, const char *fname);
-char *ig_module_build_path(const char *file, int line, const char *dir, const char *module);
-
-#define g_malloc(a) ig_malloc(a, __FILE__, __LINE__)
-#define g_malloc0(a) ig_malloc0(a, __FILE__, __LINE__)
-#define g_free ig_free
-#define g_realloc(a,b) ig_realloc(a, b, __FILE__, __LINE__)
-#define g_strdup(a) ig_strdup(a, __FILE__, __LINE__)
-#define g_strndup(a, b) ig_strndup(a, b, __FILE__, __LINE__)
-#define g_string_new(a) ig_string_new(__FILE__, __LINE__, a)
-#define g_string_free(a, b) ig_string_free(__FILE__, __LINE__, a, b)
-#define g_strjoinv(a,b) ig_strjoinv(__FILE__, __LINE__, a, b)
-#define g_dirname(a) ig_dirname(__FILE__, __LINE__, a)
-#define g_module_build_path(a, b) ig_module_build_path(__FILE__, __LINE__, a, b)
-
-#ifndef __STRICT_ANSI__
-#define g_strconcat(a...) ig_strconcat(__FILE__, __LINE__, ##a)
-#define g_strdup_printf(a, b...) ig_strdup_printf(__FILE__, __LINE__, a, ##b)
-#define g_strdup_vprintf(a, b...) ig_strdup_vprintf(__FILE__, __LINE__, a, ##b)
-#endif
-#endif