переводчик / драйвер скрипта systemtap (systemtap script translator/driver)
Описание (Description)
The stap program is the front-end to the Systemtap tool. It
accepts probing instructions written in a simple domain-specific
language, translates those instructions into C code, compiles
this C code, and loads the resulting module into a running Linux
kernel or a Dyninst user-space mutator, to perform the requested
system trace/probe functions. You can supply the script in a
named file (FILENAME), from standard input (use - instead of
FILENAME), or from the command line (using -e SCRIPT). The
program runs until it is interrupted by the user, or if the
script voluntarily invokes the exit() function, or by sufficient
number of soft errors.
The language, which is described the SCRIPT LANGUAGE section
below, is strictly typed, expressive, declaration free,
procedural, prototyping-friendly, and inspired by awk and C. It
allows source code points or events in the system to be
associated with handlers, which are subroutines that are executed
synchronously. It is somewhat similar conceptually to
"breakpoint command lists" in the gdb debugger.
