More work on daemon scheduling etc

Original git commit by Alexander Larsson <alex@localhost.localdomain> at 1161615951 +0200

svn path=/trunk/; revision=119

1 files changed, 177 insertions, 0 deletions

diff --git a/daemon/gvfsjobopenforread.c b/daemon/gvfsjobopenforread.c
new file mode 100644
index 00000000..43fcb7d9
--- /dev/null
+++ b/daemon/gvfsjobopenforread.c
@@ -0,0 +1,177 @@
+#include <config.h>
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <glib.h>
+#include <dbus/dbus.h>
+#include <glib/gi18n.h>
+#include "gvfsreadhandle.h"
+#include "gvfsjobopenforread.h"
+#include "gvfsdaemonutils.h"
+
+G_DEFINE_TYPE (GVfsJobOpenForRead, g_vfs_job_open_for_read, G_TYPE_VFS_JOB);
+
+static gboolean start (GVfsJob *job);
+static void send_reply (GVfsJob *job);
+
+static void
+g_vfs_job_open_for_read_finalize (GObject *object)
+{
+  GVfsJobOpenForRead *job;
+
+  job = G_VFS_JOB_OPEN_FOR_READ (object);
+
+  if (job->message)
+    dbus_message_unref (job->message);
+
+  /* TODO: manage backend_handle if not put in readhandle */
+
+  g_free (job->filename);
+  
+  if (G_OBJECT_CLASS (g_vfs_job_open_for_read_parent_class)->finalize)
+    (*G_OBJECT_CLASS (g_vfs_job_open_for_read_parent_class)->finalize) (object);
+}
+
+static void
+g_vfs_job_open_for_read_class_init (GVfsJobOpenForReadClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  GVfsJobClass *job_class = G_VFS_JOB_CLASS (klass);
+  
+  gobject_class->finalize = g_vfs_job_open_for_read_finalize;
+
+  job_class->start = start;
+  job_class->send_reply = send_reply;
+}
+
+static void
+g_vfs_job_open_for_read_init (GVfsJobOpenForRead *job)
+{
+}
+
+GVfsJob *
+g_vfs_job_open_for_read_new (GVfsDaemon *daemon,
+			     DBusConnection *connection,
+			     DBusMessage *message)
+{
+  GVfsJobOpenForRead *job;
+  DBusMessage *reply;
+  DBusError derror;
+  int path_len;
+  const char *path_data;
+  
+  dbus_error_init (&derror);
+  if (!dbus_message_get_args (message, &derror, 
+			      DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE,
+			      &path_data, &path_len,
+			      0))
+    {
+      reply = dbus_message_new_error (message,
+				      derror.name,
+                                      derror.message);
+      dbus_error_free (&derror);
+
+      dbus_connection_send (connection, reply, NULL);
+      return NULL;
+    }
+
+  job = g_object_new (G_TYPE_VFS_JOB_OPEN_FOR_READ, NULL);
+
+  G_VFS_JOB (job)->daemon = daemon;
+  job->connection = connection; /* TODO: ref? */
+  job->message = dbus_message_ref (message);
+  job->filename = g_strndup (path_data, path_len);
+  
+  return G_VFS_JOB (job);
+}
+
+static gboolean
+start (GVfsJob *job)
+{
+  GVfsDaemonBackendClass *class;
+  GVfsJobOpenForRead *op_job = G_VFS_JOB_OPEN_FOR_READ (job);
+
+  class = G_VFS_DAEMON_BACKEND_GET_CLASS (job->daemon->backend);
+  
+  return class->open_for_read (job->daemon->backend,
+			       op_job,
+			       op_job->filename);
+}
+
+void
+g_vfs_job_open_for_read_set_handle (GVfsJobOpenForRead *job,
+				    GVfsHandle *handle)
+{
+  job->backend_handle = handle;
+}
+
+/* Might be called on an i/o thread */
+static DBusMessage *
+create_reply (GVfsJob *job,
+	      DBusConnection *connection,
+	      DBusMessage *message)
+{
+  GVfsJobOpenForRead *open_job = G_VFS_JOB_OPEN_FOR_READ (job);
+  GVfsReadHandle *handle;
+  DBusMessage *reply;
+  GError *error;
+  int fd_id;
+  gboolean res;
+
+  g_assert (open_job->backend_handle != NULL);
+
+  error = NULL;
+  handle = g_vfs_read_handle_new (&error);
+  if (handle == NULL)
+    {
+      reply = dbus_message_new_error_from_gerror (message, error);
+      g_error_free (error);
+      return reply;
+    }
+
+  if (!dbus_connection_send_fd (connection, 
+				g_vfs_read_handle_get_remote_fd (handle),
+				&fd_id, &error))
+    {
+      reply = dbus_message_new_error_from_gerror (message, error);
+      g_error_free (error);
+      g_object_unref (handle);
+      return reply;
+    }
+
+  reply = dbus_message_new_method_return (message);
+  res = dbus_message_append_args (reply,
+				  DBUS_TYPE_UINT32, &fd_id,
+				  DBUS_TYPE_INVALID);
+
+  g_vfs_read_handle_close_remote_fd (handle);
+  g_vfs_read_handle_set_data (handle, open_job->backend_handle);
+  g_vfs_daemon_register_read_handle (job->daemon, handle);
+  open_job->backend_handle = NULL;
+
+  return reply;
+}
+
+/* Might be called on an i/o thread */
+static void
+send_reply (GVfsJob *job)
+{
+  GVfsJobOpenForRead *open_job = G_VFS_JOB_OPEN_FOR_READ (job);
+  DBusMessage *reply;
+  
+  if (job->failed) 
+    reply = dbus_message_new_error_from_gerror (open_job->message, job->error);
+  else
+    reply = create_reply (job, open_job->connection, open_job->message);
+ 
+  g_assert (reply != NULL);
+
+  /* Queues reply (threadsafely), actually sends it in mainloop */
+  dbus_connection_send (open_job->connection, reply, NULL);
+  dbus_message_unref (reply);
+
+  g_vfs_job_emit_finished (job);
+}