Changes between Version 1 and Version 2 of zzuf/internals Tweet

Timestamp:

11/22/2009 05:18:50 PM (14 years ago)

Author:

Sam Hocevar

Comment:

memory functions

zzuf/internals

@@ -33 +33 @@
 #!c
 #include <malloc.h>
+
 #include "libzzuf.h"
 #include "lib-load.h"
@@ -56 +57 @@
 }}}
 
+== Memory functions ==
+
+Functions such as '''`malloc`''' need to be diverted by zzuf in order to monitor global memory usage and detect severe memory leaks.
+
+This creates a bootstrapping problem on some platforms: the diverted '''`calloc`''' calls the real '''`calloc`''', which needs to be loaded using '''`dlsym`'''. On Linux, '''`dlsym`''' calls '''`calloc`''', resulting in an infinite loop. To avoid this, we declare a private static buffer that memory allocation functions can use if the original function is not yet loaded.
+
 === Standard file descriptor functions ===