- add a systemtap tapset defining "python.function.entry" and

"python.function.return" to make it easy to use the static probepoint
    within Python; add an example of using the tapset to the docs
This commit is contained in:
dmalcolm 2010-02-09 22:46:34 +00:00
parent 5ae15cdb9b
commit 3dde1c9650
3 changed files with 80 additions and 1 deletions

17
libpython.stp Normal file
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@ -0,0 +1,17 @@
/* Systemtap tapset to make it easier to trace Python */
/*
Define python.function.entry/return:
*/
probe python.function.entry = process("python").library("LIBRARY_PATH").mark("function__entry")
{
filename = user_string($arg1);
funcname = user_string($arg2);
lineno = $arg3;
}
probe python.function.return = process("python").library("LIBRARY_PATH").mark("function__return")
{
filename = user_string($arg1);
funcname = user_string($arg2);
lineno = $arg3;
}

View File

@ -52,7 +52,7 @@
Summary: An interpreted, interactive, object-oriented programming language
Name: %{python}
Version: 2.6.4
Release: 17%{?dist}
Release: 18%{?dist}
License: Python
Group: Development/Languages
Provides: python-abi = %{pybasever}
@ -82,6 +82,16 @@ Source1: libpython-36a517ef7848cbd0b3dcc7371f32e47ac4c87eba.tar.gz
Source2: pythondeps.sh
%global __python_requires %{SOURCE2}
# Systemtap tapset to make it easier to use the systemtap static probes
# (actually a template; LIBRARY_PATH will get fixed up during install)
# Written by dmalcolm; not yet sent upstream
Source3: libpython.stp
# Example systemtap script using the tapset
# Written by wcohen, mjw, dmalcolm; not yet sent upstream
Source4: systemtap-example.stp
# Modules/Setup.dist is ultimately used by the "makesetup" script to construct
# the Makefile and config.c
@ -416,6 +426,11 @@ code that uses more than just unittest and/or test_support.py.
%setup -q -n Python-%{version} -T -D -a 1
%endif # with_gdb_hooks
%if 0%{?with_systemtap}
# Provide an example of usage of the tapset:
cp -a %{SOURCE4} .
%endif # with_systemtap
# Ensure that we're using the system copy of various libraries, rather than
# copies shipped by upstream in the tarball:
# Remove embedded copy of expat:
@ -696,6 +711,25 @@ LD_LIBRARY_PATH=. ./python -c "import compileall; import sys; compileall.compile
LD_LIBRARY_PATH=. ./python -O -c "import compileall; import sys; compileall.compile_dir('%{buildroot}%{dir_holding_gdb_py}', ddir='%{dir_holding_gdb_py}')"
%endif # with_gdb_hooks
#
# Systemtap hooks:
#
%if 0%{?with_systemtap}
# Install a tapset for this libpython into tapsetdir, fixing up the path to the
# library:
mkdir -p %{buildroot}%{tapsetdir}
%ifarch ppc64 s390x x86_64 ia64 alpha sparc64
%global libpython_stp libpython%{pybasever}-64.stp
%else
%global libpython_stp libpython%{pybasever}-32.stp
%endif
sed \
-e "s|LIBRARY_PATH|%{_libdir}/%{py_INSTSONAME}|" \
%{SOURCE3} \
> %{buildroot}%{tapsetdir}/%{libpython_stp}
%endif # with_systemtap
%clean
rm -fr %{buildroot}
@ -842,6 +876,10 @@ rm -fr %{buildroot}
%defattr(-,root,root,-)
%doc LICENSE README
%{_libdir}/%{py_INSTSONAME}
%if 0%{?with_systemtap}
%{tapsetdir}/%{libpython_stp}
%doc systemtap-example.stp
%endif
%files devel
%defattr(-,root,root,-)
@ -903,6 +941,11 @@ rm -fr %{buildroot}
# payload file would be unpackaged)
%changelog
* Tue Feb 9 2010 David Malcolm <dmalcolm@redhat.com> - 2.6.4-18
- add a systemtap tapset defining "python.function.entry" and
"python.function.return" to make it easy to use the static probepoint within
Python; add an example of using the tapset to the docs
* Tue Feb 9 2010 David Malcolm <dmalcolm@redhat.com> - 2.6.4-17
- add systemtap static probes (wcohen; patch 55; rh bug #545179)
- update some comments in specfile relating to gdb work

19
systemtap-example.stp Normal file
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@ -0,0 +1,19 @@
/*
Example usage of the Python systemtap tapset to show a nested view of all
Python function calls (and returns) across the whole system.
Run this using
stap systemtap-example.stp
to instrument all Python processes on the system, or (for example) using
stap systemtap-example.stp -c COMMAND
to instrument a specific program (implemented in Python)
*/
probe python.function.entry
{
printf("%s => %s in %s:%d\n", thread_indent(1), funcname, filename, lineno);
}
probe python.function.return
{
printf("%s <= %s in %s:%d\n", thread_indent(-1), funcname, filename, lineno);
}