Expose uv_loop_t pointer for integration with other C-extensions

Author: pranavtbhat

tests/test_pointers.py

@@ -0,0 +1,9 @@
+from uvloop import _testbase as tb
+
+
+class Test_UV_Pointers(tb.UVTestCase):
+    def test_get_uvloop_ptr(self):
+        self.assertGreater(self.new_loop().get_uvloop_ptr(), 0)
+
+    def test_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
+    def get_uvloop_ptr(self):
+        return <uint64_t>self.uvloop
+
+    def get_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,