Index: mojo/public/python/src/python_system_helper.cc |
diff --git a/mojo/public/python/src/python_system_helper.cc b/mojo/public/python/src/python_system_helper.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..91032053bff05d706deb63771da6bef7f32739fd |
--- /dev/null |
+++ b/mojo/public/python/src/python_system_helper.cc |
@@ -0,0 +1,79 @@ |
+// Copyright 2014 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "mojo/public/python/src/python_system_helper.h" |
+ |
+#include "Python.h" |
+ |
+#include "mojo/public/cpp/environment/logging.h" |
+#include "mojo/public/cpp/system/macros.h" |
+#include "mojo/public/cpp/utility/run_loop.h" |
+ |
+namespace { |
+ |
+class ScopedGIL { |
+ public: |
+ ScopedGIL() { |
+ state_ = PyGILState_Ensure(); |
+ } |
+ |
+ ~ScopedGIL() { |
+ PyGILState_Release(state_); |
+ } |
+ |
+ private: |
+ PyGILState_STATE state_; |
+ |
+ MOJO_DISALLOW_COPY_AND_ASSIGN(ScopedGIL); |
+}; |
+ |
+class PythonClosure : public mojo::Closure::Runnable { |
+ public: |
+ PythonClosure(PyObject* callable) : callable_(callable) { |
+ MOJO_CHECK(callable); |
+ Py_XINCREF(callable); |
+ } |
+ |
+ virtual ~PythonClosure() { |
+ ScopedGIL acquire_gil; |
+ Py_DECREF(callable_); |
+ } |
+ |
+ virtual void Run() const MOJO_OVERRIDE { |
+ ScopedGIL acquire_gil; |
+ PyObject* empty_tuple = PyTuple_New(0); |
+ if (!empty_tuple) { |
+ mojo::RunLoop::current()->Quit(); |
+ return; |
+ } |
+ |
+ PyObject* result = PyObject_CallObject(callable_, empty_tuple); |
+ Py_DECREF(empty_tuple); |
+ if (result) { |
+ Py_DECREF(result); |
+ } else { |
+ mojo::RunLoop::current()->Quit(); |
+ return; |
+ } |
+ } |
+ |
+ private: |
+ PyObject* callable_; |
+ |
+ MOJO_DISALLOW_COPY_AND_ASSIGN(PythonClosure); |
+}; |
+ |
+} // namespace |
+ |
+namespace mojo { |
+ |
+Closure BuildClosure(PyObject* callable) { |
+ if (!PyCallable_Check(callable)) |
+ return Closure(); |
+ |
+ return Closure( |
+ static_cast<mojo::Closure::Runnable*>(new PythonClosure(callable))); |
+} |
+ |
+} // namespace mojo |