1 #include <Python.h> 2 #include <semaphore.h> 3 4 5 static int 6 parse_sem_t(PyObject *object, void *address) 7 { 8 *((sem_t **)address) = PyLong_AsVoidPtr(object); 9 return 1; 10 } 11 12 13 static PyObject * 14 namedsem_sem_open(PyObject *self, PyObject *args) 15 { 16 const char *name; 17 int oflag; 18 unsigned int value; 19 sem_t *result; 20 21 PyArg_ParseTuple(args, "siI", &name, &oflag, &value); 22 result = sem_open(name, oflag, 0600, value); 23 24 return PyLong_FromVoidPtr(result); 25 } 26 27 static PyObject * 28 namedsem_sem_close(PyObject *self, PyObject *args) 29 { 30 sem_t *sem; 31 int result; 32 33 PyArg_ParseTuple(args, "O&", &parse_sem_t, &sem); 34 result = sem_close(sem); 35 36 return Py_BuildValue("i", result); 37 } 38 39 static PyObject * 40 namedsem_sem_unlink(PyObject *self, PyObject *args) 41 { 42 const char *name; 43 int result; 44 45 PyArg_ParseTuple(args, "s", &name); 46 result = sem_unlink(name); 47 48 return Py_BuildValue("i", result); 49 } 50 51 static PyObject * 52 namedsem_sem_wait(PyObject *self, PyObject *args) 53 { 54 sem_t *sem; 55 int result; 56 57 PyArg_ParseTuple(args, "O&", &parse_sem_t, &sem); 58 result = sem_wait(sem); 59 60 return Py_BuildValue("i", result); 61 } 62 63 static PyObject * 64 namedsem_sem_post(PyObject *self, PyObject *args) 65 { 66 sem_t *sem; 67 int result; 68 69 PyArg_ParseTuple(args, "O&", &parse_sem_t, &sem); 70 result = sem_post(sem); 71 72 return Py_BuildValue("i", result); 73 } 74 75 76 static PyObject * 77 namedsem_sem_getvalue(PyObject *self, PyObject *args) 78 { 79 sem_t *sem; 80 int sval; 81 82 PyArg_ParseTuple(args, "O&", &parse_sem_t, &sem); 83 sem_getvalue(sem, &sval); 84 85 return Py_BuildValue("i", sval); 86 } 87 88 89 90 static PyMethodDef NamedsemMethods[] = { 91 {"sem_open", namedsem_sem_open, METH_VARARGS, "Execute sem_open()."}, 92 {"sem_close", namedsem_sem_close, METH_VARARGS, "Execute sem_close()."}, 93 {"sem_unlink", namedsem_sem_unlink, METH_VARARGS, "Execute sem_unlink()."}, 94 {"sem_wait", namedsem_sem_wait, METH_VARARGS, "Execute sem_wait()."}, 95 {"sem_post", namedsem_sem_post, METH_VARARGS, "Execute sem_post()."}, 96 {"sem_getvalue", namedsem_sem_getvalue, METH_VARARGS, "Execute sem_getvalue()."}, 97 {NULL, NULL, 0, NULL} 98 }; 99 100 PyMODINIT_FUNC 101 initnamedsem(void) { 102 PyObject *module; 103 104 module = Py_InitModule("namedsem", NamedsemMethods); 105 PyModule_AddIntConstant(module, "SEM_FAILED", (long)SEM_FAILED); 106 } 107
