Hooking into tcmalloc allocations and deallocations?

[rjaber]

Is there an equivalent in tcmalloc to gperftool's interfaces found in malloc_hook.h, such as AddNewHook and AddDeleteHook?

[ckennelly]

There have been internal discussion around alternative, more-featureful APIs for malloc hooks, but these aren't quite ready yet.

[erin2722]

Have there been any updates/future considerations on this @ckennelly?

[AustinSchuh]

I just hit this as well, trying to update from gperftools to this version. We use these hooks to disallow allocations in hard realtime code. Any hints on where to patch in a callback until the more featureful API merges?

[torshepherd]

@AustinSchuh operator new and malloc and the like are implemented as attribute(alias(TcmallocInternalNew)) or something like that. You could alias that to your hook function instead and then call InternalNew yourself

The other option is dynamically loading with dlsym and monkey-patching the function symbol to your own function