[srvx-commits] commit: More debug allocator fixes and enhancements

[Michael P. <md...@tr...>]

Revision: srvx--devo--1.3--patch-6
Archive: sr...@sr...--2005-srvx
Creator: Michael Poole <md...@tr...>
Date: Fri Jan 21 10:10:49 EST 2005
Standard-date: 2005-01-21 15:10:49 GMT
Modified-files: ChangeLog src/alloc-srvx.c src/dict-splay.c
New-patches: sr...@sr...--2005-srvx/srvx--devo--1.3--patch-6
Summary: More debug allocator fixes and enhancements
Keywords: 

src/alloc-srvx.c (*_MAGIC): ASk recognized the CCSDS ASM sequence.
(srvx_free): Overwrite with 0xDE bytes to distinguish from
uninitialized values.  As SailorFrag suggested, only overwrite the
user region.

src/dict-splay.c (dict_insert): Check whether free functions need to
be worked around here as well.

* added files

    {arch}/srvx/srvx--devo/srvx--devo--1.3/sr...@sr...--2005-srvx/patch-log/patch-6

* modified files

--- orig/ChangeLog
+++ mod/ChangeLog
@@ -2,6 +2,25 @@
 # arch-tag: aut...@sr...--2005-srvx/srvx--devo--1.3
 #
 
+2005-01-21 15:10:49 GMT	Michael Poole <md...@tr...>	patch-6
+
+    Summary:
+      More debug allocator fixes and enhancements
+    Revision:
+      srvx--devo--1.3--patch-6
+
+    src/alloc-srvx.c (*_MAGIC): ASk recognized the CCSDS ASM sequence.
+    (srvx_free): Overwrite with 0xDE bytes to distinguish from
+    uninitialized values.  As SailorFrag suggested, only overwrite the
+    user region.
+    
+    src/dict-splay.c (dict_insert): Check whether free functions need to
+    be worked around here as well.
+
+    modified files:
+     ChangeLog src/alloc-srvx.c src/dict-splay.c
+
+
 2005-01-21 00:48:35 GMT	Michael Poole <md...@tr...>	patch-5
 
     Summary:


--- orig/src/alloc-srvx.c
+++ mod/src/alloc-srvx.c
@@ -19,7 +19,6 @@
 #undef malloc
 #undef free
 
-/* cookies for anybody who recognizes these bytes without help :) */
 #define ALLOC_MAGIC 0x1acf
 #define FREE_MAGIC  0xfc1d
 const char redzone[] = { '\x03', '\x47', '\x76', '\xc7' };
@@ -132,11 +131,11 @@
     block = (struct alloc_header *)ptr - 1;
     assert(block->magic == ALLOC_MAGIC);
     assert(0 == memcmp((char*)(block + 1) + block->size, redzone, sizeof(redzone)));
-    size = block->size + sizeof(*block);
-    memset(block, 0, size);
+    size = block->size;
+    memset(block + 1, 0xde, size);
     block->magic = FREE_MAGIC;
     free(block);
     alloc_count--;
-    alloc_size -= size - sizeof(*block);
+    alloc_size -= size;
     (void)file; (void)line;
 }


--- orig/src/dict-splay.c
+++ mod/src/dict-splay.c
@@ -186,8 +186,18 @@
 	    dict->root = new_node;
 	} else {
 	    /* maybe we don't want to overwrite it .. oh well */
-	    if (dict->free_data) dict->free_data(dict->root->data);
-            if (dict->free_keys) dict->free_keys((void*)dict->root->key);
+	    if (dict->free_data) {
+                if (dict->free_data == free)
+                    free(dict->root->data);
+                else
+                    dict->free_data(dict->root->data);
+            }
+            if (dict->free_keys) {
+                if (dict->free_keys == free)
+                    free((void*)dict->root->key);
+                else
+                    dict->free_keys((void*)dict->root->key);
+            }
             free(new_node);
             dict->root->key = key;
 	    dict->root->data = data;