8580c65f81
The added hooks hooks.prof_sample and hooks.prof_sample_free are intended to allow advanced users to track additional information, to enable new ways of profiling on top of the jemalloc heap profile and sample features. The sample hook is invoked after the allocation and backtracing, and forwards the both the allocation and backtrace to the user hook; the sample_free hook happens before the actual deallocation, and forwards only the ptr and usz to the hook.
28 lines
939 B
C
28 lines
939 B
C
#ifndef JEMALLOC_INTERNAL_PROF_HOOK_H
|
|
#define JEMALLOC_INTERNAL_PROF_HOOK_H
|
|
|
|
/*
|
|
* The hooks types of which are declared in this file are experimental and
|
|
* undocumented, thus the typedefs are located in an 'internal' header.
|
|
*/
|
|
|
|
/*
|
|
* A hook to mock out backtrace functionality. This can be handy, since it's
|
|
* otherwise difficult to guarantee that two allocations are reported as coming
|
|
* from the exact same stack trace in the presence of an optimizing compiler.
|
|
*/
|
|
typedef void (*prof_backtrace_hook_t)(void **, unsigned *, unsigned);
|
|
|
|
/*
|
|
* A callback hook that notifies about recently dumped heap profile.
|
|
*/
|
|
typedef void (*prof_dump_hook_t)(const char *filename);
|
|
|
|
/* ptr, size, backtrace vector, backtrace vector length */
|
|
typedef void (*prof_sample_hook_t)(const void *, size_t, void **, unsigned);
|
|
|
|
/* ptr, size */
|
|
typedef void (*prof_sample_free_hook_t)(const void *, size_t);
|
|
|
|
#endif /* JEMALLOC_INTERNAL_PROF_HOOK_H */
|