add hg and python

1 files changed, 76 insertions, 0 deletions

diff --git a/sys/lib/python/hotshot/__init__.py b/sys/lib/python/hotshot/__init__.py
new file mode 100644
index 000000000..b9f7866e4
--- /dev/null
+++ b/sys/lib/python/hotshot/__init__.py
@@ -0,0 +1,76 @@
+"""High-perfomance logging profiler, mostly written in C."""
+
+import _hotshot
+
+from _hotshot import ProfilerError
+
+
+class Profile:
+    def __init__(self, logfn, lineevents=0, linetimings=1):
+        self.lineevents = lineevents and 1 or 0
+        self.linetimings = (linetimings and lineevents) and 1 or 0
+        self._prof = p = _hotshot.profiler(
+            logfn, self.lineevents, self.linetimings)
+
+        # Attempt to avoid confusing results caused by the presence of
+        # Python wrappers around these functions, but only if we can
+        # be sure the methods have not been overridden or extended.
+        if self.__class__ is Profile:
+            self.close = p.close
+            self.start = p.start
+            self.stop = p.stop
+            self.addinfo = p.addinfo
+
+    def close(self):
+        """Close the logfile and terminate the profiler."""
+        self._prof.close()
+
+    def fileno(self):
+        """Return the file descriptor of the profiler's log file."""
+        return self._prof.fileno()
+
+    def start(self):
+        """Start the profiler."""
+        self._prof.start()
+
+    def stop(self):
+        """Stop the profiler."""
+        self._prof.stop()
+
+    def addinfo(self, key, value):
+        """Add an arbitrary labelled value to the profile log."""
+        self._prof.addinfo(key, value)
+
+    # These methods offer the same interface as the profile.Profile class,
+    # but delegate most of the work to the C implementation underneath.
+
+    def run(self, cmd):
+        """Profile an exec-compatible string in the script
+        environment.
+
+        The globals from the __main__ module are used as both the
+        globals and locals for the script.
+        """
+        import __main__
+        dict = __main__.__dict__
+        return self.runctx(cmd, dict, dict)
+
+    def runctx(self, cmd, globals, locals):
+        """Evaluate an exec-compatible string in a specific
+        environment.
+
+        The string is compiled before profiling begins.
+        """
+        code = compile(cmd, "<string>", "exec")
+        self._prof.runcode(code, globals, locals)
+        return self
+
+    def runcall(self, func, *args, **kw):
+        """Profile a single call of a callable.
+
+        Additional positional and keyword arguments may be passed
+        along; the result of the call is returned, and exceptions are
+        allowed to propogate cleanly, while ensuring that profiling is
+        disabled on the way out.
+        """
+        return self._prof.runcall(func, args, kw)