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Wrap create mutex

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Kovid Goyal 2020-10-14 09:31:47 +05:30
parent 250fbf8c3f
commit e0d98c07e7
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2 changed files with 18 additions and 0 deletions
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3
src/calibre/test_build.py
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@ -247,6 +247,9 @@ class BuildTest(unittest.TestCase):
os.rmdir(dpath)
del h
shutil.rmtree(tdir)
m = winutil.create_mutex("test-mutex", False)
self.assertRaises(OSError, winutil.create_mutex, 'test-mutex', False)
m.close()
def test_sqlite(self):
import sqlite3

15
src/calibre/utils/windows/winutil.cpp
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@ -786,6 +786,20 @@ load_library(PyObject *self, PyObject *args) {
return (PyObject*)Handle_create(h, ModuleHandle, PyTuple_GET_ITEM(args, 0));
}
static PyObject*
create_mutex(PyObject *self, PyObject *args) {
int initial_owner = 0, allow_existing = 1;
wchar_raii name;
if (!PyArg_ParseTuple(args, "O&|pp", py_to_wchar, &name, &allow_existing, &initial_owner)) return NULL;
HANDLE h = CreateMutexW(NULL, initial_owner, name.ptr());
if (h == NULL) return PyErr_SetExcFromWindowsErrWithFilenameObject(PyExc_OSError, 0, PyTuple_GET_ITEM(args, 0));
if (!allow_existing && GetLastError() == ERROR_ALREADY_EXISTS) {
CloseHandle(h);
return PyErr_SetExcFromWindowsErrWithFilenameObject(PyExc_FileExistsError, ERROR_ALREADY_EXISTS, PyTuple_GET_ITEM(args, 0));
}
return (PyObject*)Handle_create(h);
}
// Icon loading {{{
#pragma pack( push )
#pragma pack( 2 )
@ -920,6 +934,7 @@ static const char winutil_doc[] = "Defines utility methods to interface with win
#define M(name, args) { #name, name, args, ""}
static PyMethodDef winutil_methods[] = {
M(get_dll_directory, METH_NOARGS),
M(create_mutex, METH_VARARGS),
M(get_async_key_state, METH_VARARGS),
M(create_named_pipe, METH_VARARGS),
M(set_handle_information, METH_VARARGS),