Hooking every hookable targets with independent wrapper fucntion.

[sindney]

Hi, i'm trying to use rebind_symbols_image to add hook for our game. I'm adding mmap/munmap hooks to count overall memory usage, in order to gather the memory usage for every library\executable in the game process. For performance reasons, using a single global hook with frequent call to dladdr is unpractical:

Dl_info Dlinfo;
// Returns caller's return address.
void *Addr = __builtin_return_address(0);
// Determine which library the caller belongs.
if (dladdr(Addr, &Dlinfo))

So i need to provide independent hook(we uses marco tricks to pre-define wrappers) functions for every library/executables. I'm using _dyld_register_func_for_add_image to get noticed when new library is added, and then call fishhook's rebind_symbols_image in the callback to register it hooks.

When running, the actual memory usage data is small and the result seems didn't hook all libraries. The rebind_symbols_image return ok, i'm not sure using rebind_symbols_image in _dyld_register_func_for_add_image callback is a valide usage. I tried to delay the call with timer and it didn't work either. Any suggestions?