Expose uv_loop_t pointer for integration with other C-extensions

Author: pranavtbhat

tests/test_pointers.py

@@ -0,0 +1,8 @@
+fromuvloopimport_testbaseastb
+
+classTest_UV_Pointers(tb.UVTestCase):
+deftest_get_uvloop_ptr(self):
+self.assertGreater(self.new_loop().get_uvloop_ptr(), 0)
+
+deftest_get_uvloop_ptr_capsule(self):
+self.assertIsNotNone(self.new_loop().get_uvloop_ptr_capsule())

uvloop/loop.pyx

@@ -38,6 +38,7 @@ from cpython cimport (
  PyBytes_AsStringAndSize,
  Py_SIZE, PyBytes_AS_STRING, PyBUF_WRITABLE
 )
+from cpython.pycapsule cimport PyCapsule_New
 
 from . import _noop
 
@@ -3108,6 +3109,13 @@ cdef class Loop:
 'asyncgen': agen
  })
 
+# Expose pointer for integration with other C-extensions
+defget_uvloop_ptr(self):
+return<uint64_t>self.uvloop
+
+defget_uvloop_ptr_capsule(self):
+return PyCapsule_New(<void*>self.uvloop, NULL, NULL)
+
 
 cdef void __loop_alloc_buffer(uv.uv_handle_t* uvhandle,
  size_t suggested_size,