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authorNot Zed <NotZed@Ximian.com>2003-09-18 05:19:04 +0800
committerMichael Zucci <zucchi@src.gnome.org>2003-09-18 05:19:04 +0800
commit81a0ff5bc44a3bd11399e6b3c985735737606c8c (patch)
tree54b5ed4342a6843c1db4c7e75f2e1b1fe9b82dff /mail/em-sync-stream.c
parenta36a1bb70b6ebcb51ac39304370c89bda63e11b9 (diff)
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2003-09-17 Not Zed <NotZed@Ximian.com> * folder-browser.c, folder-browser.h, folder-browser-ui.c folder-browser-ui.h, mail-callbacks.c, mail-callbacks.h mail-display.c, mail-display.h, mail-display-stream.c mail-display-stream.h, mail-format.c, mail-format.h mail-identify.c, mail-search.c, mail-search.h message-browser.c, message-browser.h, subscribe-dialog.c subscribe-dialog.h, mail-font-prefs.c, mail-font-prefs.h: cvs removed. * Makefile.am: Removed mail-font-prefs.[ch], hasn't been built for ages. * em-*.c: killed a bunch of printfs. * em-format-html-display.c (efhd_html_button_press_event): update for html object api chagnes. ** Merge in mail-refactor-2 branch. svn path=/trunk/; revision=22602
Diffstat (limited to 'mail/em-sync-stream.c')
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diff --git a/mail/em-sync-stream.c b/mail/em-sync-stream.c
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Authors: Jeffrey Stedfast <fejj@ximian.com>
+ * Michael Zucchi <notzed@ximian.com>
+ *
+ * Copyright 2001 Ximian, Inc. (www.ximian.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <stdio.h>
+#include <camel/camel-stream.h>
+#include <camel/camel-object.h>
+#include <gtk/gtkmain.h>
+#include "em-sync-stream.h"
+
+#include "mail-mt.h"
+
+/*#define LOG_STREAM*/
+
+#define d(x)
+
+#define EMSS_CLASS(x) ((EMSyncStreamClass *)(((CamelObject *)(x))->klass))
+
+struct _EMSyncStreamPrivate {
+ /* FIXME: use a single data port/gui channel for all instances */
+ /* TODO: possibly just use one of the mail-mt ports ... */
+ struct _EMsgPort *data_port, *reply_port;
+ struct _GIOChannel *gui_channel;
+ guint gui_watch;
+
+ char *buf_data;
+ int buf_used;
+ int buf_size;
+};
+
+/* Should probably expose messages to outside world ... so subclasses can extend */
+enum _write_msg_t {
+ EMSS_WRITE,
+ EMSS_FLUSH,
+ EMSS_CLOSE,
+};
+
+struct _write_msg {
+ EMsg msg;
+
+ enum _write_msg_t op;
+
+ const char *data;
+ size_t n;
+};
+
+static void em_sync_stream_class_init (EMSyncStreamClass *klass);
+static void em_sync_stream_init (CamelObject *object);
+static void em_sync_stream_finalize (CamelObject *object);
+
+static ssize_t stream_write(CamelStream *stream, const char *buffer, size_t n);
+static int stream_close(CamelStream *stream);
+static int stream_flush(CamelStream *stream);
+
+static CamelStreamClass *parent_class = NULL;
+
+CamelType
+em_sync_stream_get_type (void)
+{
+ static CamelType type = CAMEL_INVALID_TYPE;
+
+ if (type == CAMEL_INVALID_TYPE) {
+ type = camel_type_register (CAMEL_STREAM_TYPE,
+ "EMSyncStream",
+ sizeof (EMSyncStream),
+ sizeof (EMSyncStreamClass),
+ (CamelObjectClassInitFunc) em_sync_stream_class_init,
+ NULL,
+ (CamelObjectInitFunc) em_sync_stream_init,
+ (CamelObjectFinalizeFunc) em_sync_stream_finalize);
+ }
+
+ return type;
+}
+
+static void
+em_sync_stream_class_init (EMSyncStreamClass *klass)
+{
+ CamelStreamClass *stream_class = CAMEL_STREAM_CLASS (klass);
+
+ parent_class = (CamelStreamClass *) CAMEL_STREAM_TYPE;
+
+ /* virtual method overload */
+ stream_class->write = stream_write;
+ stream_class->flush = stream_flush;
+ stream_class->close = stream_close;
+}
+
+static gboolean
+emcs_gui_received(GIOChannel *source, GIOCondition cond, void *data)
+{
+ EMSyncStream *emss = data;
+ struct _EMSyncStreamPrivate *p = emss->priv;
+ struct _write_msg *msg;
+
+ d(printf("%p: gui sync op job waiting\n", emss));
+
+ msg = (struct _write_msg *)e_msgport_get(p->data_port);
+ /* Should never happen ... */
+ if (msg == NULL)
+ return TRUE;
+
+ d(printf("%p: running sync op %d\n", emss, msg->op));
+
+ /* force out any pending data before doing anything else */
+ if (p->buf_used > 0) {
+ EMSS_CLASS(emss)->sync_write((CamelStream *)emss, p->buf_data, p->buf_used);
+ p->buf_used = 0;
+ }
+
+ /* FIXME: need to handle return values */
+
+ switch (msg->op) {
+ case EMSS_WRITE:
+ EMSS_CLASS(emss)->sync_write((CamelStream *)emss, msg->data, msg->n);
+ break;
+ case EMSS_FLUSH:
+ EMSS_CLASS(emss)->sync_flush((CamelStream *)emss);
+ break;
+ case EMSS_CLOSE:
+ EMSS_CLASS(emss)->sync_close((CamelStream *)emss);
+ break;
+ }
+
+ e_msgport_reply((EMsg *)msg);
+ d(printf("%p: gui sync op jobs done\n", emss));
+
+ return TRUE;
+}
+
+static void
+em_sync_stream_init (CamelObject *object)
+{
+ EMSyncStream *emss = (EMSyncStream *)object;
+ struct _EMSyncStreamPrivate *p;
+
+ p = emss->priv = g_malloc0(sizeof(*p));
+
+ p->data_port = e_msgport_new();
+ p->reply_port = e_msgport_new();
+
+ p->gui_channel = g_io_channel_unix_new(e_msgport_fd(p->data_port));
+ p->gui_watch = g_io_add_watch(p->gui_channel, G_IO_IN, emcs_gui_received, emss);
+
+ d(printf("%p: new emss\n", emss));
+}
+
+static void
+sync_op(EMSyncStream *emss, enum _write_msg_t op, const char *data, size_t n)
+{
+ struct _EMSyncStreamPrivate *p = emss->priv;
+ struct _write_msg msg;
+
+ d(printf("%p: launching sync op %d\n", emss, op));
+
+ /* we do everything synchronous, we should never have any locks, and
+ this prevents overflow from banked up data */
+
+ msg.msg.reply_port = p->reply_port;
+ msg.op = op;
+ msg.data = data;
+ msg.n = n;
+
+ e_msgport_put(p->data_port, &msg.msg);
+ e_msgport_wait(p->reply_port);
+
+ g_assert(e_msgport_get(msg.msg.reply_port) == &msg.msg);
+ d(printf("%p: returned sync op %d\n", emss, op));
+}
+
+static void
+em_sync_stream_finalize (CamelObject *object)
+{
+ EMSyncStream *emss = (EMSyncStream *)object;
+ struct _EMSyncStreamPrivate *p = emss->priv;
+
+ /* TODO: is this stuff safe to do in another thread? */
+ g_source_remove(p->gui_watch);
+ g_io_channel_unref(p->gui_channel);
+
+ e_msgport_destroy(p->data_port);
+ e_msgport_destroy(p->reply_port);
+
+ p->data_port = NULL;
+ p->reply_port = NULL;
+
+ g_free(p->buf_data);
+ g_free(p);
+}
+
+static ssize_t
+stream_write (CamelStream *stream, const char *buffer, size_t n)
+{
+ EMSyncStream *emss = EM_SYNC_STREAM (stream);
+ struct _EMSyncStreamPrivate *p = emss->priv;
+
+ if (emss->cancel)
+ return -1;
+
+ if (pthread_self() == mail_gui_thread)
+ EMSS_CLASS(emss)->sync_write(stream, buffer, n);
+ else if (p->buf_size > 0) {
+ size_t left = p->buf_size-p->buf_used;
+
+ if (n >= left) {
+ sync_op(emss, EMSS_WRITE, buffer, n);
+ } else {
+ memcpy(p->buf_data + p->buf_used, buffer, n);
+ p->buf_used += n;
+ }
+ } else {
+ sync_op(emss, EMSS_WRITE, buffer, n);
+ }
+
+ return (ssize_t) n;
+}
+
+static int
+stream_flush(CamelStream *stream)
+{
+ EMSyncStream *emss = (EMSyncStream *)stream;
+
+ if (emss->cancel)
+ return -1;
+
+ if (pthread_self() == mail_gui_thread)
+ return ((EMSyncStreamClass *)(((CamelObject *)emss)->klass))->sync_flush(stream);
+ else
+ sync_op(emss, EMSS_FLUSH, NULL, 0);
+
+ return 0;
+}
+
+static int
+stream_close(CamelStream *stream)
+{
+ EMSyncStream *emss = (EMSyncStream *)stream;
+
+ if (emss->cancel)
+ return -1;
+
+ d(printf("%p: closing stream\n", stream));
+
+ if (pthread_self() == mail_gui_thread)
+ return ((EMSyncStreamClass *)(((CamelObject *)emss)->klass))->sync_close(stream);
+ else
+ sync_op(emss, EMSS_CLOSE, NULL, 0);
+
+ return 0;
+}
+
+void
+em_sync_stream_set_buffer_size(EMSyncStream *emss, size_t size)
+{
+ struct _EMSyncStreamPrivate *p = emss->priv;
+
+ g_free(p->buf_data);
+ p->buf_data = g_malloc(size);
+ p->buf_size = size;
+ p->buf_used = 0;
+}