bpo-11063, bpo-20519: avoid ctypes and improve import time for uuid (#3796)

bpo-11063, bpo-20519: avoid ctypes and improve import time for uuid.

1 files changed, 35 insertions, 0 deletions

diff --git a/Modules/_uuidmodule.c b/Modules/_uuidmodule.c
new file mode 100644
index 0000000..e263b40
--- /dev/null
+++ b/Modules/_uuidmodule.c
@@ -0,0 +1,35 @@
+#define PY_SSIZE_T_CLEAN
+
+#include "Python.h"
+#include <uuid/uuid.h>
+
+
+static PyObject *
+py_uuid_generate_time_safe(void)
+{
+    uuid_t out;
+    int res;
+
+    res = uuid_generate_time_safe(out);
+    return Py_BuildValue("y#i", (const char *) out, sizeof(out), res);
+}
+
+
+static PyMethodDef uuid_methods[] = {
+    {"generate_time_safe", (PyCFunction) py_uuid_generate_time_safe, METH_NOARGS, NULL},
+    {NULL, NULL, 0, NULL}           /* sentinel */
+};
+
+static struct PyModuleDef uuidmodule = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "_uuid",
+    .m_size = -1,
+    .m_methods = uuid_methods,
+};
+
+PyMODINIT_FUNC
+PyInit__uuid(void)
+{
+    assert(sizeof(uuid_t) == 16);
+    return PyModule_Create(&uuidmodule);
+}