diff options
Diffstat (limited to 'man3/malloc_hook.3')
| -rw-r--r-- | man3/malloc_hook.3 | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/man3/malloc_hook.3 b/man3/malloc_hook.3 index 83b213cd56..e524d59397 100644 --- a/man3/malloc_hook.3 +++ b/man3/malloc_hook.3 @@ -105,45 +105,45 @@ Here is a short example of how to use these variables. .EX #include <stdio.h> #include <malloc.h> - +\& /* Prototypes for our hooks */ static void my_init_hook(void); static void *my_malloc_hook(size_t, const void *); - +\& /* Variables to save original hooks */ static void *(*old_malloc_hook)(size_t, const void *); - +\& /* Override initializing hook from the C library */ void (*__malloc_initialize_hook)(void) = my_init_hook; - +\& static void my_init_hook(void) { old_malloc_hook = __malloc_hook; __malloc_hook = my_malloc_hook; } - +\& static void * my_malloc_hook(size_t size, const void *caller) { void *result; - +\& /* Restore all old hooks */ __malloc_hook = old_malloc_hook; - +\& /* Call recursively */ result = malloc(size); - +\& /* Save underlying hooks */ old_malloc_hook = __malloc_hook; - +\& /* printf() might call malloc(), so protect it too */ printf("malloc(%zu) called from %p returns %p\en", size, caller, result); - +\& /* Restore our own hooks */ __malloc_hook = my_malloc_hook; - +\& return result; } .EE |