[lttng-ust.git] / src / lib / lttng-ust-libc-wrapper / README

liblttng-ust-libc is used for instrumenting some calls to libc in a
program, without need for recompiling it.

This library defines a malloc() function that is instrumented with a
tracepoint. It also calls the libc malloc afterwards. When loaded with
LD_PRELOAD, it replaces the libc malloc() function, in effect
instrumenting all calls to malloc(). The same is performed for free().

See the "run" script for a usage example.
Commit	Line	Data
1622ba22 MD	1	liblttng-ust-libc is used for instrumenting some calls to libc in a
	2	program, without need for recompiling it.
	3
	4	This library defines a malloc() function that is instrumented with a
	5	tracepoint. It also calls the libc malloc afterwards. When loaded with
	6	LD_PRELOAD, it replaces the libc malloc() function, in effect
	7	instrumenting all calls to malloc(). The same is performed for free().
	8
	9	See the "run" script for a usage example.