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python2/00055-systemtap.patch

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diff -up Python-2.7rc1/configure.ac.systemtap Python-2.7rc1/configure.ac
--- Python-2.7rc1/configure.ac.systemtap 2010-06-06 10:53:15.514975012 -0400
+++ Python-2.7rc1/configure.ac 2010-06-06 10:53:15.520974361 -0400
@@ -2616,6 +2616,38 @@ if test "$with_valgrind" != no; then
)
fi
+# Check for dtrace support
+AC_MSG_CHECKING(for --with-dtrace)
+AC_ARG_WITH(dtrace,
+ AC_HELP_STRING(--with(out)-dtrace, disable/enable dtrace support))
+
+if test ! -z "$with_dtrace"
+then
+ if dtrace -G -o /dev/null -s $srcdir/Include/pydtrace.d 2>/dev/null
+ then
+ AC_DEFINE(WITH_DTRACE, 1,
+ [Define if you want to compile in Dtrace support])
+ with_dtrace="Sun"
+ DTRACEOBJS="Python/dtrace.o"
+ DTRADEHDRS=""
+ elif dtrace -h -o /dev/null -s $srcdir/Include/pydtrace.d
+ then
+ AC_DEFINE(WITH_DTRACE, 1,
+ [Define if you want to compile in Dtrace support])
+ with_dtrace="Apple"
+ DTRACEOBJS=""
+ DTRADEHDRS="pydtrace.h"
+ else
+ with_dtrace="no"
+ fi
+else
+ with_dtrace="no"
+fi
+
+AC_MSG_RESULT($with_dtrace)
+AC_SUBST(DTRACEOBJS)
+AC_SUBST(DTRACEHDRS)
+
# Check for --with-wctype-functions
AC_MSG_CHECKING(for --with-wctype-functions)
AC_ARG_WITH(wctype-functions,
diff -up Python-2.7rc1/Include/pydtrace.d.systemtap Python-2.7rc1/Include/pydtrace.d
--- Python-2.7rc1/Include/pydtrace.d.systemtap 2010-06-06 10:53:15.520974361 -0400
+++ Python-2.7rc1/Include/pydtrace.d 2010-06-06 10:53:15.520974361 -0400
@@ -0,0 +1,10 @@
+provider python {
+ probe function__entry(const char *, const char *, int);
+ probe function__return(const char *, const char *, int);
+};
+
+#pragma D attributes Evolving/Evolving/Common provider python provider
+#pragma D attributes Private/Private/Common provider python module
+#pragma D attributes Private/Private/Common provider python function
+#pragma D attributes Evolving/Evolving/Common provider python name
+#pragma D attributes Evolving/Evolving/Common provider python args
diff -up Python-2.7rc1/Makefile.pre.in.systemtap Python-2.7rc1/Makefile.pre.in
--- Python-2.7rc1/Makefile.pre.in.systemtap 2010-06-06 10:53:15.488978775 -0400
+++ Python-2.7rc1/Makefile.pre.in 2010-06-06 11:05:30.411100568 -0400
@@ -298,6 +298,7 @@ PYTHON_OBJS= \
Python/formatter_unicode.o \
Python/formatter_string.o \
Python/$(DYNLOADFILE) \
+ @DTRACEOBJS@ \
$(LIBOBJS) \
$(MACHDEP_OBJS) \
$(THREADOBJ)
@@ -599,6 +600,18 @@ Python/formatter_unicode.o: $(srcdir)/Py
Python/formatter_string.o: $(srcdir)/Python/formatter_string.c \
$(STRINGLIB_HEADERS)
+# Only needed with --with-dtrace
+buildinclude:
+ mkdir -p Include
+
+Include/pydtrace.h: buildinclude $(srcdir)/Include/pydtrace.d
+ dtrace -o $@ $(DFLAGS) -C -h -s $(srcdir)/Include/pydtrace.d
+
+Python/ceval.o: Include/pydtrace.h
+
+Python/dtrace.o: buildinclude $(srcdir)/Include/pydtrace.d Python/ceval.o
+ dtrace -o $@ $(DFLAGS) -C -G -s $(srcdir)/Include/pydtrace.d Python/ceval.o
+
############################################################################
# Header files
@@ -1251,7 +1264,7 @@ Python/thread.o: @THREADHEADERS@
.PHONY: frameworkinstall frameworkinstallframework frameworkinstallstructure
.PHONY: frameworkinstallmaclib frameworkinstallapps frameworkinstallunixtools
.PHONY: frameworkaltinstallunixtools recheck clean clobber distclean
-.PHONY: smelly funny patchcheck altmaninstall commoninstall
+.PHONY: smelly funny patchcheck altmaninstall commoninstall buildinclude
.PHONY: gdbhooks
# IF YOU PUT ANYTHING HERE IT WILL GO AWAY
diff -up Python-2.7rc1/pyconfig.h.in.systemtap Python-2.7rc1/pyconfig.h.in
--- Python-2.7rc1/pyconfig.h.in.systemtap 2010-05-08 07:04:18.000000000 -0400
+++ Python-2.7rc1/pyconfig.h.in 2010-06-06 10:53:15.521974070 -0400
@@ -1074,6 +1074,9 @@
/* Define if you want documentation strings in extension modules */
#undef WITH_DOC_STRINGS
+/* Define if you want to compile in Dtrace support */
+#undef WITH_DTRACE
+
/* Define if you want to use the new-style (Openstep, Rhapsody, MacOS) dynamic
linker (dyld) instead of the old-style (NextStep) dynamic linker (rld).
Dyld is necessary to support frameworks. */
diff -up Python-2.7rc1/Python/ceval.c.systemtap Python-2.7rc1/Python/ceval.c
--- Python-2.7rc1/Python/ceval.c.systemtap 2010-05-09 10:46:46.000000000 -0400
+++ Python-2.7rc1/Python/ceval.c 2010-06-06 11:08:40.683100500 -0400
@@ -19,6 +19,10 @@
#include <ctype.h>
+#ifdef WITH_DTRACE
+#include "pydtrace.h"
+#endif
+
#ifndef WITH_TSC
#define READ_TIMESTAMP(var)
@@ -671,6 +675,55 @@ PyEval_EvalCode(PyCodeObject *co, PyObje
NULL);
}
+#ifdef WITH_DTRACE
+static void
+dtrace_entry(PyFrameObject *f)
+{
+ const char *filename;
+ const char *fname;
+ int lineno;
+
+ filename = PyString_AsString(f->f_code->co_filename);
+ fname = PyString_AsString(f->f_code->co_name);
+ lineno = PyCode_Addr2Line(f->f_code, f->f_lasti);
+
+ PYTHON_FUNCTION_ENTRY((char *)filename, (char *)fname, lineno);
+
+ /*
+ * Currently a USDT tail-call will not receive the correct arguments.
+ * Disable the tail call here.
+ */
+#if defined(__sparc)
+ asm("nop");
+#endif
+}
+
+static void
+dtrace_return(PyFrameObject *f)
+{
+ const char *filename;
+ const char *fname;
+ int lineno;
+
+ filename = PyString_AsString(f->f_code->co_filename);
+ fname = PyString_AsString(f->f_code->co_name);
+ lineno = PyCode_Addr2Line(f->f_code, f->f_lasti);
+ PYTHON_FUNCTION_RETURN((char *)filename, (char *)fname, lineno);
+
+ /*
+ * Currently a USDT tail-call will not receive the correct arguments.
+ * Disable the tail call here.
+ */
+#if defined(__sparc)
+ asm("nop");
+#endif
+}
+#else
+#define PYTHON_FUNCTION_ENTRY_ENABLED() 0
+#define PYTHON_FUNCTION_RETURN_ENABLED() 0
+#define dtrace_entry(f)
+#define dtrace_return(f)
+#endif
/* Interpreter main loop */
@@ -909,6 +962,9 @@ PyEval_EvalFrameEx(PyFrameObject *f, int
}
}
+ if (PYTHON_FUNCTION_ENTRY_ENABLED())
+ dtrace_entry(f);
+
co = f->f_code;
names = co->co_names;
consts = co->co_consts;
@@ -3000,6 +3056,9 @@ fast_yield:
/* pop frame */
exit_eval_frame:
+ if (PYTHON_FUNCTION_RETURN_ENABLED())
+ dtrace_return(f);
+
Py_LeaveRecursiveCall();
tstate->frame = f->f_back;
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