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-rw-r--r--glib/pygsource.c723
1 files changed, 723 insertions, 0 deletions
diff --git a/glib/pygsource.c b/glib/pygsource.c
new file mode 100644
index 0000000..298b928
--- /dev/null
+++ b/glib/pygsource.c
@@ -0,0 +1,723 @@
+/* -*- Mode: C; c-basic-offset: 4 -*-
+ * pygtk- Python bindings for the GTK toolkit.
+ * Copyright (C) 1998-2003 James Henstridge
+ * Copyright (C) 2005 Oracle
+ *
+ * Author: Manish Singh <manish.singh@oracle.com>
+ *
+ * pygsource.c: GSource wrapper
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
+ * USA
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <Python.h>
+#include <pythread.h>
+#include <structmember.h> /* for PyMemberDef */
+#include "pyglib.h"
+#include "pyglib-private.h"
+#include "pygmaincontext.h"
+#include "pygsource.h"
+
+#define CHECK_DESTROYED(self, ret) G_STMT_START { \
+ if ((self)->source == NULL) { \
+ PyErr_SetString(PyExc_RuntimeError, "source is destroyed"); \
+ return (ret); \
+ } \
+} G_STMT_END
+
+
+typedef struct {
+ PyObject_HEAD
+ GSource *source;
+ PyObject *inst_dict;
+ PyObject *weakreflist;
+ gboolean python_source;
+} PyGSource;
+
+typedef struct
+{
+ GSource source;
+ PyObject *obj;
+} PyGRealSource;
+
+/* glib.Source */
+
+PYGLIB_DEFINE_TYPE("glib.Source", PyGSource_Type, PyGSource)
+
+static PyObject *
+source_repr(PyGSource *self, const char *type)
+{
+ gchar buf[256], *desc;
+
+ if (self->source) {
+ if (g_source_get_context(self->source))
+ desc = "attached";
+ else
+ desc = "unattached";
+ } else {
+ desc = "destroyed";
+ }
+
+ if (type)
+ g_snprintf(buf, sizeof(buf), "<%s glib %s source at 0x%lx>",
+ desc, type, (long) self);
+ else
+ g_snprintf(buf, sizeof(buf), "<%s glib source at 0x%lx>",
+ desc, (long) self);
+
+ return _PyUnicode_FromString(buf);
+}
+
+static PyObject *
+pyg_source_attach(PyGSource *self, PyObject *args, PyObject *kwargs)
+{
+ static char *kwlist[] = { "context", NULL };
+ PyGMainContext *py_context = NULL;
+ GMainContext *context = NULL;
+ guint id;
+
+ if (!PyArg_ParseTupleAndKeywords (args, kwargs,
+ "|O!:attach", kwlist,
+ &PyGMainContext_Type, &py_context))
+ return NULL;
+
+ if (py_context)
+ context = py_context->context;
+
+ CHECK_DESTROYED(self, NULL);
+
+ if (self->python_source) {
+ PyGRealSource *pysource = (PyGRealSource *)self->source;
+ Py_INCREF(pysource->obj);
+ }
+
+ id = g_source_attach(self->source, context);
+ return _PyLong_FromLong(id);
+}
+
+static PyObject *
+pyg_source_destroy(PyGSource *self)
+{
+ CHECK_DESTROYED(self, NULL);
+
+ if (self->python_source && self->source->context) {
+ PyGRealSource *pysource = (PyGRealSource *)self->source;
+ Py_DECREF(pysource->obj);
+ }
+
+ g_source_destroy(self->source);
+ self->source = NULL;
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyObject *
+pyg_source_set_callback(PyGSource *self, PyObject *args)
+{
+ PyObject *first, *callback, *cbargs = NULL, *data;
+ gint len;
+
+ CHECK_DESTROYED(self, NULL);
+
+ len = PyTuple_Size (args);
+ if (len < 1) {
+ PyErr_SetString(PyExc_TypeError,
+ "set_callback requires at least 1 argument");
+ return NULL;
+ }
+
+ first = PySequence_GetSlice(args, 0, 1);
+ if (!PyArg_ParseTuple(first, "O:set_callback", &callback)) {
+ Py_DECREF (first);
+ return NULL;
+ }
+ Py_DECREF(first);
+
+ if (!PyCallable_Check(callback)) {
+ PyErr_SetString(PyExc_TypeError, "first argument not callable");
+ return NULL;
+ }
+
+ cbargs = PySequence_GetSlice(args, 1, len);
+ if (cbargs == NULL)
+ return NULL;
+
+ data = Py_BuildValue("(ON)", callback, cbargs);
+ if (data == NULL)
+ return NULL;
+
+ g_source_set_callback(self->source,
+ _pyglib_handler_marshal, data,
+ _pyglib_destroy_notify);
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyObject *
+pyg_source_get_context(PyGSource *self)
+{
+ GMainContext *context;
+
+ CHECK_DESTROYED(self, NULL);
+
+ context = g_source_get_context(self->source);
+
+ if (context) {
+ return pyglib_main_context_new(context);
+ } else {
+ Py_INCREF(Py_None);
+ return Py_None;
+ }
+}
+
+static PyObject *
+pyg_source_add_poll(PyGSource *self, PyObject *args, PyObject *kwargs)
+{
+ static char *kwlist[] = { "fd", NULL };
+ PyGPollFD *fd;
+
+ if (!self->python_source) {
+ PyErr_SetString(PyExc_TypeError,
+ "add_poll can only be used with sources "
+ "implemented in python");
+ return NULL;
+ }
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwargs,
+ "O!:add_poll", kwlist,
+ &PyGPollFD_Type, &fd))
+ return NULL;
+
+ CHECK_DESTROYED(self, NULL);
+
+ g_source_add_poll(self->source, &fd->pollfd);
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyObject *
+pyg_source_remove_poll(PyGSource *self, PyObject *args, PyObject *kwargs)
+{
+ static char *kwlist[] = { "fd", NULL };
+ PyGPollFD *fd;
+
+ if (!self->python_source) {
+ PyErr_SetString(PyExc_TypeError,
+ "remove_poll can only be used with sources "
+ "implemented in python");
+ return NULL;
+ }
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwargs,
+ "O!:remove_poll", kwlist,
+ &PyGPollFD_Type, &fd))
+ return NULL;
+
+ CHECK_DESTROYED(self, NULL);
+
+ g_source_remove_poll(self->source, &fd->pollfd);
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyObject *
+pyg_source_get_current_time(PyGSource *self)
+{
+ GTimeVal timeval;
+ double ret;
+
+ CHECK_DESTROYED(self, NULL);
+
+ g_source_get_current_time(self->source, &timeval);
+ ret = (double)timeval.tv_sec + (double)timeval.tv_usec * 0.000001;
+ return PyFloat_FromDouble(ret);
+}
+
+static PyMethodDef pyg_source_methods[] = {
+ { "attach", (PyCFunction)pyg_source_attach, METH_KEYWORDS },
+ { "destroy", (PyCFunction)pyg_source_destroy, METH_NOARGS },
+ { "set_callback", (PyCFunction)pyg_source_set_callback, METH_VARARGS },
+ { "get_context", (PyCFunction)pyg_source_get_context, METH_NOARGS },
+ { "add_poll", (PyCFunction)pyg_source_add_poll, METH_KEYWORDS },
+ { "remove_poll", (PyCFunction)pyg_source_remove_poll, METH_KEYWORDS },
+ { "get_current_time", (PyCFunction)pyg_source_get_current_time, METH_NOARGS },
+ { NULL, NULL, 0 }
+};
+
+static PyObject *
+pyg_source_get_dict(PyGSource *self, void *closure)
+{
+ if (self->inst_dict == NULL) {
+ self->inst_dict = PyDict_New();
+ if (self->inst_dict == NULL)
+ return NULL;
+ }
+
+ Py_INCREF(self->inst_dict);
+ return self->inst_dict;
+}
+
+static PyObject *
+pyg_source_get_priority(PyGSource *self, void *closure)
+{
+ CHECK_DESTROYED(self, NULL);
+
+ return _PyLong_FromLong(g_source_get_priority(self->source));
+}
+
+static int
+pyg_source_set_priority(PyGSource *self, PyObject *value, void *closure)
+{
+ CHECK_DESTROYED(self, -1);
+
+ if (value == NULL) {
+ PyErr_SetString(PyExc_TypeError, "cannot delete priority");
+ return -1;
+ }
+
+ if (!_PyLong_Check(value)) {
+ PyErr_SetString(PyExc_TypeError, "type mismatch");
+ return -1;
+ }
+
+ g_source_set_priority(self->source, _PyLong_AsLong(value));
+
+ return 0;
+}
+
+static PyObject *
+pyg_source_get_can_recurse(PyGSource *self, void *closure)
+{
+ CHECK_DESTROYED(self, NULL);
+
+ return PyBool_FromLong(g_source_get_can_recurse(self->source));
+}
+
+static int
+pyg_source_set_can_recurse(PyGSource *self, PyObject *value, void *closure)
+{
+ CHECK_DESTROYED(self, -1);
+
+ if (value == NULL) {
+ PyErr_SetString(PyExc_TypeError, "cannot delete can_recurse");
+ return -1;
+ }
+
+ g_source_set_can_recurse(self->source, PyObject_IsTrue(value));
+
+ return 0;
+}
+
+static PyObject *
+pyg_source_get_id(PyGSource *self, void *closure)
+{
+ CHECK_DESTROYED(self, NULL);
+
+ if (g_source_get_context(self->source) == NULL) {
+ PyErr_SetString(PyExc_RuntimeError, "source is not attached");
+ return NULL;
+ }
+
+ return _PyLong_FromLong(g_source_get_id(self->source));
+}
+
+static PyGetSetDef pyg_source_getsets[] = {
+ { "__dict__", (getter)pyg_source_get_dict, (setter)0 },
+ {"priority", (getter)pyg_source_get_priority, (setter)pyg_source_set_priority },
+ {"can_recurse", (getter)pyg_source_get_can_recurse, (setter)pyg_source_set_can_recurse },
+ {"id", (getter)pyg_source_get_id, (setter)0 },
+ {NULL, 0, 0}
+};
+
+static PyObject *
+pyg_source_repr(PyGSource *self)
+{
+ return source_repr(self, NULL);
+}
+
+static int
+pyg_source_traverse(PyGSource *self, visitproc visit, void *arg)
+{
+ int ret = 0;
+
+ if (self->inst_dict) ret = visit(self->inst_dict, arg);
+ if (ret != 0) return ret;
+
+ return 0;
+}
+
+static int
+pyg_source_clear(PyGSource *self)
+{
+ PyObject *tmp;
+
+ tmp = self->inst_dict;
+ self->inst_dict = NULL;
+ Py_XDECREF(tmp);
+
+ if (self->source) {
+ g_source_unref(self->source);
+ self->source = NULL;
+ }
+
+ return 0;
+}
+
+static void
+pyg_source_dealloc(PyGSource *self)
+{
+ PyObject_ClearWeakRefs((PyObject *)self);
+
+ PyObject_GC_UnTrack((PyObject *)self);
+
+ pyg_source_clear(self);
+
+ PyObject_GC_Del(self);
+}
+
+static gboolean
+pyg_source_prepare(GSource *source, gint *timeout)
+{
+ PyGRealSource *pysource = (PyGRealSource *)source;
+ PyObject *t;
+ gboolean ret = FALSE;
+ gboolean got_err = TRUE;
+ PyGILState_STATE state;
+
+ state = pyglib_gil_state_ensure();
+
+ t = PyObject_CallMethod(pysource->obj, "prepare", NULL);
+
+ if (t == NULL) {
+ goto bail;
+ } else if (!PyObject_IsTrue(t)) {
+ got_err = FALSE;
+ goto bail;
+ } else if (!PyTuple_Check(t)) {
+ PyErr_SetString(PyExc_TypeError,
+ "source prepare function must return a tuple or False");
+ goto bail;
+ } else if (PyTuple_Size(t) != 2) {
+ PyErr_SetString(PyExc_TypeError,
+ "source prepare function return tuple must be exactly "
+ "2 elements long");
+ goto bail;
+ }
+
+ ret = PyObject_IsTrue(PyTuple_GET_ITEM(t, 0));
+ *timeout = _PyLong_AsLong(PyTuple_GET_ITEM(t, 1));
+
+ if (*timeout == -1 && PyErr_Occurred()) {
+ ret = FALSE;
+ goto bail;
+ }
+
+ got_err = FALSE;
+
+bail:
+ if (got_err)
+ PyErr_Print();
+
+ Py_XDECREF(t);
+
+ pyglib_gil_state_release(state);
+
+ return ret;
+}
+
+static gboolean
+pyg_source_check(GSource *source)
+{
+ PyGRealSource *pysource = (PyGRealSource *)source;
+ PyObject *t;
+ gboolean ret;
+ PyGILState_STATE state;
+
+ state = pyglib_gil_state_ensure();
+
+ t = PyObject_CallMethod(pysource->obj, "check", NULL);
+
+ if (t == NULL) {
+ PyErr_Print();
+ ret = FALSE;
+ } else {
+ ret = PyObject_IsTrue(t);
+ Py_DECREF(t);
+ }
+
+ pyglib_gil_state_release(state);
+
+ return ret;
+}
+
+static gboolean
+pyg_source_dispatch(GSource *source, GSourceFunc callback, gpointer user_data)
+{
+ PyGRealSource *pysource = (PyGRealSource *)source;
+ PyObject *func, *args, *tuple, *t;
+ gboolean ret;
+ PyGILState_STATE state;
+
+ state = pyglib_gil_state_ensure();
+
+ if (callback) {
+ tuple = user_data;
+
+ func = PyTuple_GetItem(tuple, 0);
+ args = PyTuple_GetItem(tuple, 1);
+ } else {
+ func = Py_None;
+ args = Py_None;
+ }
+
+ t = PyObject_CallMethod(pysource->obj, "dispatch", "OO", func, args);
+
+ if (t == NULL) {
+ PyErr_Print();
+ ret = FALSE;
+ } else {
+ ret = PyObject_IsTrue(t);
+ Py_DECREF(t);
+ }
+
+ pyglib_gil_state_release(state);
+
+ return ret;
+}
+
+static void
+pyg_source_finalize(GSource *source)
+{
+ PyGRealSource *pysource = (PyGRealSource *)source;
+ PyObject *func, *t;
+ PyGILState_STATE state;
+
+ state = pyglib_gil_state_ensure();
+
+ func = PyObject_GetAttrString(pysource->obj, "finalize");
+ if (func) {
+ t = PyObject_CallObject(func, NULL);
+ Py_DECREF(func);
+
+ if (t == NULL) {
+ PyErr_Print();
+ } else {
+ Py_DECREF(t);
+ }
+ }
+
+ pyglib_gil_state_release(state);
+}
+
+static GSourceFuncs pyg_source_funcs =
+{
+ pyg_source_prepare,
+ pyg_source_check,
+ pyg_source_dispatch,
+ pyg_source_finalize
+};
+
+static int
+pyg_source_init(PyGSource *self, PyObject *args, PyObject *kwargs)
+{
+ PyGRealSource *pysource;
+
+ self->source = g_source_new(&pyg_source_funcs, sizeof(PyGRealSource));
+
+ pysource = (PyGRealSource *)self->source;
+ pysource->obj = (PyObject*)self;
+
+ self->inst_dict = NULL;
+ self->weakreflist = NULL;
+
+ self->python_source = TRUE;
+
+ return 0;
+}
+
+static void
+pyg_source_free(PyObject *op)
+{
+ PyObject_GC_Del(op);
+}
+
+/* glib.Idle */
+
+PYGLIB_DEFINE_TYPE("glib.Idle", PyGIdle_Type, PyGSource)
+
+static PyObject *
+pyg_idle_repr(PyGSource *self)
+{
+ return source_repr(self, "idle");
+}
+
+static int
+pyg_idle_init(PyGSource *self, PyObject *args, PyObject *kwargs)
+{
+ static char *kwlist[] = { "priority", NULL };
+ gint priority = G_PRIORITY_DEFAULT_IDLE;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwargs,
+ "|i:glib.Idle.__init__", kwlist,
+ &priority))
+ return -1;
+
+ self->source = g_idle_source_new ();
+
+ if (priority != G_PRIORITY_DEFAULT_IDLE)
+ g_source_set_priority(self->source, priority);
+
+ self->inst_dict = NULL;
+ self->weakreflist = NULL;
+
+ self->python_source = FALSE;
+
+ return 0;
+}
+
+/* glib.Timeout */
+
+PYGLIB_DEFINE_TYPE("glib.Timeout", PyGTimeout_Type, PyGSource)
+
+static PyObject *
+pyg_timeout_repr(PyGSource *self)
+{
+ return source_repr(self, "timeout");
+}
+
+static int
+pyg_timeout_init(PyGSource *self, PyObject *args, PyObject *kwargs)
+{
+ static char *kwlist[] = { "interval", "priority", NULL };
+ gint priority = G_PRIORITY_DEFAULT;
+ guint interval;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwargs,
+ "I|i:glib.Timeout.__init__", kwlist,
+ &interval, &priority))
+ return -1;
+
+ self->source = g_timeout_source_new(interval);
+
+ if (priority != G_PRIORITY_DEFAULT)
+ g_source_set_priority(self->source, priority);
+
+ self->inst_dict = NULL;
+ self->weakreflist = NULL;
+
+ self->python_source = FALSE;
+
+ return 0;
+}
+
+/* glib.PollFD */
+
+PYGLIB_DEFINE_TYPE("glib.PollFD", PyGPollFD_Type, PyGPollFD)
+
+static PyMemberDef pyg_poll_fd_members[] = {
+ { "fd", T_INT, offsetof(PyGPollFD, pollfd.fd), READONLY },
+ { "events", T_USHORT, offsetof(PyGPollFD, pollfd.events), READONLY },
+ { "revents", T_USHORT, offsetof(PyGPollFD, pollfd.revents), READONLY },
+ { NULL, 0, 0, 0 }
+};
+
+static void
+pyg_poll_fd_dealloc(PyGPollFD *self)
+{
+ Py_XDECREF(self->fd_obj);
+ PyObject_DEL(self);
+}
+
+static PyObject *
+pyg_poll_fd_repr(PyGPollFD *self)
+{
+ return _PyUnicode_FromFormat("<GPollFD %d (%d) at 0x%lx>",
+ self->pollfd.fd, self->pollfd.events,
+ (long)self);
+}
+
+static int
+pyg_poll_fd_init(PyGPollFD *self, PyObject *args, PyObject *kwargs)
+{
+ static char *kwlist[] = { "fd", "events", NULL };
+ PyObject *o;
+ gint fd;
+ gushort events;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwargs,
+ "OH:glib.PollFD.__init__", kwlist,
+ &o, &events))
+ return -1;
+
+ fd = PyObject_AsFileDescriptor(o);
+ if (fd == -1)
+ return -1;
+
+ self->pollfd.fd = fd;
+ self->pollfd.events = events;
+ self->pollfd.revents = 0;
+
+ Py_INCREF(o);
+ self->fd_obj = o;
+
+ return 0;
+}
+
+void
+pyglib_source_register_types(PyObject *d)
+{
+ PyGSource_Type.tp_flags = (Py_TPFLAGS_DEFAULT |
+ Py_TPFLAGS_BASETYPE |
+ Py_TPFLAGS_HAVE_GC);
+ PyGSource_Type.tp_init = (initproc)pyg_source_init;
+ PyGSource_Type.tp_free = (freefunc)pyg_source_free;
+ PyGSource_Type.tp_dealloc = (destructor)pyg_source_dealloc;
+ PyGSource_Type.tp_methods = pyg_source_methods;
+ PyGSource_Type.tp_repr = (reprfunc)pyg_source_repr;
+ PyGSource_Type.tp_traverse = (traverseproc)pyg_source_traverse;
+ PyGSource_Type.tp_clear = (inquiry)pyg_source_clear;
+ PyGSource_Type.tp_getset = pyg_source_getsets;
+ PyGSource_Type.tp_weaklistoffset = offsetof(PyGSource, weakreflist);
+ PyGSource_Type.tp_dictoffset = offsetof(PyGSource, inst_dict);
+ PYGLIB_REGISTER_TYPE(d, PyGSource_Type, "Source");
+
+ PyGIdle_Type.tp_repr = (reprfunc)pyg_idle_repr;
+ PyGIdle_Type.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE;
+ PyGIdle_Type.tp_base = (PyTypeObject *)&PyGSource_Type;
+ PyGIdle_Type.tp_init = (initproc)pyg_idle_init;
+ PYGLIB_REGISTER_TYPE(d, PyGIdle_Type, "Idle");
+
+ PyGTimeout_Type.tp_repr = (reprfunc)pyg_timeout_repr;
+ PyGTimeout_Type.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE;
+ PyGTimeout_Type.tp_base = (PyTypeObject *)&PyGSource_Type;
+ PyGTimeout_Type.tp_init = (initproc)pyg_timeout_init;
+ PYGLIB_REGISTER_TYPE(d, PyGTimeout_Type, "Timeout");
+
+ PyGPollFD_Type.tp_dealloc = (destructor)pyg_poll_fd_dealloc;
+ PyGPollFD_Type.tp_repr = (reprfunc)pyg_poll_fd_repr;
+ PyGPollFD_Type.tp_flags = Py_TPFLAGS_DEFAULT;
+ PyGPollFD_Type.tp_members = pyg_poll_fd_members;
+ PyGPollFD_Type.tp_init = (initproc)pyg_poll_fd_init;
+ PYGLIB_REGISTER_TYPE(d, PyGPollFD_Type, "PollFD");
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 19:13:17 +0000