pidgin/pidgin

Route GLib debug logging directly to the Finch debug window

2021-10-18, Elliott Sales de Andrade
1896a80ff8e3
Route GLib debug logging directly to the Finch debug window

Instead of flowing through purple debug, this merges some bits of the existing GLib log handler, and the purple debug printer.

Testing Done:
Open the Debug window an see some `GLib-*` outputs.

Reviewed at https://reviews.imfreedom.org/r/1057/
/*
*
* purple
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include "internal.h"
#include "queuedoutputstream.h"
/**
* PurpleQueuedOutputStream:
*
* An implementation of #GFilterOutputStream which allows queuing data for
* output. This allows data to be queued while other data is being output.
* Therefore, data doesn't have to be manually stored while waiting for
* stream operations to finish.
*
* To create a queued output stream, use #purple_queued_output_stream_new().
*
* To queue data, use #purple_queued_output_stream_push_bytes_async().
*
* If there's a fatal stream error, it's suggested to clear the remaining
* bytes queued with #purple_queued_output_stream_clear_queue() to avoid
* excessive errors returned in
* #purple_queued_output_stream_push_bytes_async()'s async callback.
*/
struct _PurpleQueuedOutputStream
{
GFilterOutputStream parent;
};
typedef struct
{
GAsyncQueue *queue;
gboolean pending_queued;
} PurpleQueuedOutputStreamPrivate;
G_DEFINE_TYPE_WITH_PRIVATE(PurpleQueuedOutputStream,
purple_queued_output_stream, G_TYPE_FILTER_OUTPUT_STREAM)
/******************************************************************************
* Helpers
*****************************************************************************/
static void purple_queued_output_stream_start_push_bytes_async(GTask *task);
static void
purple_queued_output_stream_push_bytes_async_cb(GObject *source,
GAsyncResult *res, gpointer user_data)
{
GTask *task = G_TASK(user_data);
PurpleQueuedOutputStream *stream = g_task_get_source_object(task);
PurpleQueuedOutputStreamPrivate *priv = purple_queued_output_stream_get_instance_private(stream);
gssize written;
GBytes *bytes;
gsize size;
GError *error = NULL;
written = g_output_stream_write_bytes_finish(G_OUTPUT_STREAM(source),
res, &error);
bytes = g_task_get_task_data(task);
size = g_bytes_get_size(bytes);
if (written < 0) {
/* Error occurred, return error */
g_task_return_error(task, error);
g_clear_object(&task);
} else if (size > written) {
/* Partial write, prepare to send remaining data */
bytes = g_bytes_new_from_bytes(bytes, written, size - written);
g_task_set_task_data(task, bytes,
(GDestroyNotify)g_bytes_unref);
} else {
/* Full write, this task is finished */
g_task_return_boolean(task, TRUE);
g_clear_object(&task);
}
/* If g_task_return_* was called in this function, the callback
* may have cleared the stream. If so, there will be no remaining
* tasks to process here.
*/
if (task == NULL) {
/* Any queued data left? */
task = g_async_queue_try_pop(priv->queue);
}
if (task != NULL) {
/* More to process */
purple_queued_output_stream_start_push_bytes_async(task);
} else {
/* All done */
priv->pending_queued = FALSE;
g_output_stream_clear_pending(G_OUTPUT_STREAM(stream));
}
}
static void
purple_queued_output_stream_start_push_bytes_async(GTask *task)
{
PurpleQueuedOutputStream *stream = g_task_get_source_object(task);
GOutputStream *base_stream;
base_stream = g_filter_output_stream_get_base_stream(
G_FILTER_OUTPUT_STREAM(stream));
g_output_stream_write_bytes_async(base_stream,
g_task_get_task_data(task),
g_task_get_priority(task),
g_task_get_cancellable(task),
purple_queued_output_stream_push_bytes_async_cb,
task);
}
/******************************************************************************
* GObject Implementation
*****************************************************************************/
static void
purple_queued_output_stream_dispose(GObject *object)
{
PurpleQueuedOutputStream *stream = PURPLE_QUEUED_OUTPUT_STREAM(object);
PurpleQueuedOutputStreamPrivate *priv = purple_queued_output_stream_get_instance_private(stream);
g_clear_pointer(&priv->queue, g_async_queue_unref);
G_OBJECT_CLASS(purple_queued_output_stream_parent_class)->dispose(object);
}
static void
purple_queued_output_stream_class_init(PurpleQueuedOutputStreamClass *klass)
{
GObjectClass *obj_class = G_OBJECT_CLASS(klass);
obj_class->dispose = purple_queued_output_stream_dispose;
}
static void
purple_queued_output_stream_init(PurpleQueuedOutputStream *stream)
{
PurpleQueuedOutputStreamPrivate *priv = purple_queued_output_stream_get_instance_private(stream);
priv->queue = g_async_queue_new_full((GDestroyNotify)g_bytes_unref);
priv->pending_queued = FALSE;
}
/******************************************************************************
* Public API
*****************************************************************************/
PurpleQueuedOutputStream *
purple_queued_output_stream_new(GOutputStream *base_stream)
{
PurpleQueuedOutputStream *stream;
g_return_val_if_fail(G_IS_OUTPUT_STREAM(base_stream), NULL);
stream = g_object_new(PURPLE_TYPE_QUEUED_OUTPUT_STREAM,
"base-stream", base_stream,
NULL);
return stream;
}
void
purple_queued_output_stream_push_bytes_async(PurpleQueuedOutputStream *stream,
GBytes *bytes, int io_priority, GCancellable *cancellable,
GAsyncReadyCallback callback, gpointer user_data)
{
GTask *task;
gboolean set_pending;
GError *error = NULL;
PurpleQueuedOutputStreamPrivate *priv = NULL;
g_return_if_fail(PURPLE_IS_QUEUED_OUTPUT_STREAM(stream));
g_return_if_fail(bytes != NULL);
priv = purple_queued_output_stream_get_instance_private(stream);
task = g_task_new(stream, cancellable, callback, user_data);
g_task_set_task_data(task, g_bytes_ref(bytes),
(GDestroyNotify)g_bytes_unref);
g_task_set_source_tag(task,
purple_queued_output_stream_push_bytes_async);
g_task_set_priority(task, io_priority);
set_pending = g_output_stream_set_pending(
G_OUTPUT_STREAM(stream), &error);
/* Since we're allowing queuing requests without blocking,
* it's not an error to be pending while processing queued operations.
*/
if (!set_pending && (!g_error_matches(error,
G_IO_ERROR, G_IO_ERROR_PENDING) ||
!priv->pending_queued)) {
g_task_return_error(task, error);
g_object_unref(task);
return;
}
g_clear_error (&error);
priv->pending_queued = TRUE;
if (set_pending) {
/* Start processing if there were no pending operations */
purple_queued_output_stream_start_push_bytes_async(task);
} else {
/* Otherwise queue the data */
g_async_queue_push(priv->queue, task);
}
}
gboolean
purple_queued_output_stream_push_bytes_finish(PurpleQueuedOutputStream *stream,
GAsyncResult *result, GError **error)
{
g_return_val_if_fail(PURPLE_IS_QUEUED_OUTPUT_STREAM(stream), FALSE);
g_return_val_if_fail(g_task_is_valid(result, stream), FALSE);
g_return_val_if_fail(g_async_result_is_tagged(result,
purple_queued_output_stream_push_bytes_async), FALSE);
return g_task_propagate_boolean(G_TASK(result), error);
}
void
purple_queued_output_stream_clear_queue(PurpleQueuedOutputStream *stream)
{
GTask *task;
PurpleQueuedOutputStreamPrivate *priv = NULL;
g_return_if_fail(PURPLE_IS_QUEUED_OUTPUT_STREAM(stream));
priv = purple_queued_output_stream_get_instance_private(stream);
while ((task = g_async_queue_try_pop(priv->queue)) != NULL) {
g_task_return_new_error(task, G_IO_ERROR, G_IO_ERROR_CANCELLED,
"PurpleQueuedOutputStream queue cleared");
g_object_unref(task);
}
}