Commit Graph

26 Commits

Author SHA1 Message Date
Matthias Clasen
69c6e41b54 Document the GIO_USE_TLS environment variable 2010-12-13 09:19:35 -05:00
Thomas Hindoe Paaboel Andersen
8f19d06ed9 Fix typo in docs for extension point
Introduced in fcd3e34227
2010-12-02 22:51:07 +01:00
Matthias Clasen
fcd3e34227 Add new extension point to the list 2010-11-29 01:39:06 -05:00
Matthias Clasen
925b4231dc Point out that g_type_init() is required 2010-08-25 22:09:07 -04:00
Matthias Clasen
ef16ea4616 Add proxy extension point to overview docs
The 'Extending GIO' section is supposed to list all extension
points, so add the proxy extension point here.
2010-08-21 22:22:25 -04:00
David Zeuthen
8a3a4596e2 Bug 626748 – Use async methods for writing and handle EAGAIN
If sending a lot of data and/or the other peer is not reading it, then
socket buffers can overflow. This is communicated from the kernel by
returning EAGAIN. In GIO, it is modelled by g_output_stream_write()
and g_socket_send_message() returning G_IO_ERROR_WOULD_BLOCK.

It is also problematic that that we're using synchronous IO in the
shared GDBus IO thread. It means that one GDBusConnection can lock up
others.

It turns out that by porting from g_output_stream_write() to
g_output_stream_write_async() we fix the EAGAIN issue. For GSocket, we
still need to handle things manually (by creating a GSource) as
g_socket_send_message() is used.

We check the new behavior in Michael's producer/consumer test case (at
/gdbus/overflow in gdbus-peer.c) added in the last commit.

Also add a test case that sends and receives a 20 MiB message.

Also add a new `transport' G_DBUS_DEBUG option so it is easy to
inspect partial writes:

 $ G_DBUS_DEBUG=transport ./gdbus-connection -p /gdbus/connection/large_message
 [...]
 ========================================================================
 GDBus-debug:Transport:
   >>>> WROTE 128000 bytes of message with serial 4 and
        size 20971669 from offset 0 on a GSocketOutputStream
 ========================================================================
 GDBus-debug:Transport:
   >>>> WROTE 128000 bytes of message with serial 4 and
        size 20971669 from offset 128000 on a GSocketOutputStream
 ========================================================================
 GDBus-debug:Transport:
   >>>> WROTE 128000 bytes of message with serial 4 and
        size 20971669 from offset 256000 on a GSocketOutputStream
 [...]
 ========================================================================
 GDBus-debug:Transport:
   >>>> WROTE 43669 bytes of message with serial 4 and
        size 20971669 from offset 20928000 on a GSocketOutputStream
 [...]
 ========================================================================
 GDBus-debug:Transport:
   <<<< READ 16 bytes of message with serial 3 and
        size 20971620 to offset 0 from a GSocketInputStream
 ========================================================================
 GDBus-debug:Transport:
   <<<< READ 15984 bytes of message with serial 3 and
        size 20971620 to offset 16 from a GSocketInputStream
 ========================================================================
 GDBus-debug:Transport:
   <<<< READ 16000 bytes of message with serial 3 and
        size 20971620 to offset 16000 from a GSocketInputStream
 [...]
 ========================================================================
 GDBus-debug:Transport:
   <<<< READ 144000 bytes of message with serial 3 and
        size 20971620 to offset 20720000 from a GSocketInputStream
 ========================================================================
 GDBus-debug:Transport:
   <<<< READ 107620 bytes of message with serial 3 and
        size 20971620 to offset 20864000 from a GSocketInputStream
 OK

https://bugzilla.gnome.org/show_bug.cgi?id=626748

Signed-off-by: David Zeuthen <davidz@redhat.com>
2010-08-16 13:54:13 -04:00
David Zeuthen
d52e1c33f7 GDBus: Add `return' debug option
This prints all GDBusMethodInvocation API usage and is normally used
with the `incoming' option. Example:

 # G_DBUS_DEBUG=incoming,return ./polkitd --replace
 Entering main event loop
 Connected to the system bus
 Registering null backend at priority -10
 [...]
 Acquired the name org.freedesktop.PolicyKit1
 [...]

 ========================================================================
 GDBus-debug:Incoming:
  <<<< METHOD INVOCATION org.freedesktop.PolicyKit1.Authority.RegisterAuthenticationAgent()
       on object /org/freedesktop/PolicyKit1/Authority
       invoked by name :1.26
       serial 299
 ========================================================================
 GDBus-debug:Return:
  >>>> METHOD ERROR org.freedesktop.PolicyKit1.Error.Failed
       message `Cannot determine session the caller is in'
       in response to org.freedesktop.PolicyKit1.Authority.RegisterAuthenticationAgent()
       on object /org/freedesktop/PolicyKit1/Authority
       to name :1.26
       reply-serial 299

 [...]

 ========================================================================
 GDBus-debug:Incoming:
  <<<< METHOD INVOCATION org.freedesktop.PolicyKit1.Authority.RegisterAuthenticationAgent()
       on object /org/freedesktop/PolicyKit1/Authority
       invoked by name :1.2402
       serial 25
 ========================================================================
 GDBus-debug:Return:
  >>>> METHOD RETURN
       in response to org.freedesktop.PolicyKit1.Authority.RegisterAuthenticationAgent()
       on object /org/freedesktop/PolicyKit1/Authority
       to name :1.2402
       reply-serial 25

Signed-off-by: David Zeuthen <davidz@redhat.com>
2010-08-04 16:59:26 -04:00
David Zeuthen
aab6d9ed1c GDBus: Handle autolaunching on UNIX/Freedesktop OSes
Also add a 'address' G_DBUS_DEBUG option that will print out useful
debug information such as

  GDBus-debug:Address: In g_dbus_address_get_for_bus_sync() for bus type `session'
  GDBus-debug:Address: env var DBUS_SESSION_BUS_ADDRESS is not set
  GDBus-debug:Address: env var DBUS_SYSTEM_BUS_ADDRESS is not set
  GDBus-debug:Address: env var DBUS_STARTER_BUS_TYPE is not set
  GDBus-debug:Address: Running `dbus-launch --autolaunch=05e508961149264c9b750a4c494aa6f7 --binary-syntax --close-stderr' to get bus address (possibly autolaunching)
  GDBus-debug:Address: dbus-launch output:
    0000: 75 6e 69 78  3a 61 62 73  74 72 61 63  74 3d 2f 74    unix:abstract=/t
    0010: 6d 70 2f 64  62 75 73 2d  77 42 41 6f  4b 59 49 52    mp/dbus-wBAoKYIR
    0020: 7a 75 2c 67  75 69 64 3d  30 34 30 64  31 33 66 33    zu,guid=040d13f3
    0030: 30 61 30 62  35 32 63 32  30 66 36 32  63 34 31 63    0a0b52c20f62c41c
    0040: 30 30 30 30  35 30 38 64  00 d2 38 00  00 01 00 40    0000508d..8....@
    0050: 05 00 00 00  00                                       .....
  GDBus-debug:Address: dbus-launch stderr output:
  14542: Autolaunch enabled (using X11).
  14542: --exit-with-session automatically enabled
  14542: Connected to X11 display ':0.0'
  14542: === Parent dbus-launch continues
  14542: Waiting for babysitter's intermediate parent
  14542: Reading address from bus
  14542: Reading PID from daemon
  14542: Saving x11 address
  14542: Created window 88080385
  14542: session file: /root/.dbus/session-bus/05e508961149264c9b750a4c494aa6f7-0
  14542: dbus-launch exiting
  GDBus-debug:Address: Returning address `unix:abstract=/tmp/dbus-wBAoKYIRzu,guid=040d13f30a0b52c20f62c41c0000508d' for bus type `session'

and

  GDBus-debug:Address: In g_dbus_address_get_for_bus_sync() for bus type `session'
  GDBus-debug:Address: env var DBUS_SESSION_BUS_ADDRESS is not set
  GDBus-debug:Address: env var DBUS_SYSTEM_BUS_ADDRESS is not set
  GDBus-debug:Address: env var DBUS_STARTER_BUS_TYPE is not set
  GDBus-debug:Address: Running `dbus-launch --autolaunch=05e508961149264c9b750a4c494aa6f7 --binary-syntax --close-stderr' to get bus address (possibly autolaunching)
  GDBus-debug:Address: dbus-launch output:
    0000: 75 6e 69 78  3a 61 62 73  74 72 61 63  74 3d 2f 74    unix:abstract=/t
    0010: 6d 70 2f 64  62 75 73 2d  77 42 41 6f  4b 59 49 52    mp/dbus-wBAoKYIR
    0020: 7a 75 2c 67  75 69 64 3d  30 34 30 64  31 33 66 33    zu,guid=040d13f3
    0030: 30 61 30 62  35 32 63 32  30 66 36 32  63 34 31 63    0a0b52c20f62c41c
    0040: 30 30 30 30  35 30 38 64  00 d2 38 00  00 01 00 40    0000508d..8....@
    0050: 05 00 00 00  00                                       .....
  GDBus-debug:Address: dbus-launch stderr output:
  14549: Autolaunch enabled (using X11).
  14549: --exit-with-session automatically enabled
  14549: Connected to X11 display ':0.0'
  14549: dbus-daemon is already running. Returning existing parameters.
  14549: dbus-launch exiting
  GDBus-debug:Address: Returning address `unix:abstract=/tmp/dbus-wBAoKYIRzu,guid=040d13f30a0b52c20f62c41c0000508d' for bus type `session'

Note that things work exactly like libdbus, e.g. from the
dbus-launch(1) man page:

  Whenever an autolaunch occurs, the application that had to start a
  new bus will be in its own little world; it can effectively end up
  starting a whole new session if it tries to use a lot of bus
  services. This can be suboptimal or even totally broken, depending
  on the app and what it tries to do.

  [...]

  You can always avoid autolaunch by manually setting
  DBUS_SESSION_BUS_ADDRESS. Autolaunch happens because the default
  address if none is set is "autolaunch:", so if any other address is
  set there will be no autolaunch. You can however include autolaunch
  in an explicit session bus address as a fallback, for example
  DBUS_SESSION_BUS_ADDRESS="something:,autolaunch:" - in that case if
  the first address doesn't work, processes will autolaunch. (The bus
  address variable contains a comma-separated list of addresses to
  try.)

Signed-off-by: David Zeuthen <davidz@redhat.com>
2010-07-06 17:03:36 -04:00
David Zeuthen
c29ad23928 GDBus: make G_DBUS_DEBUG=authentication work again
This was inadvertently removed in this commit

http://git.gnome.org/browse/glib/commit/?id=1d22b64843c83631bcd0e5255930f3a4e990961e

Signed-off-by: David Zeuthen <davidz@redhat.com>
2010-07-02 09:35:13 -04:00
David Zeuthen
bd8d837f57 Bug 620913 – More control with G_DBUS_DEBUG
This commit adds the following G_DBUS_DEBUG flags

 - emission
 - incoming
 - call
 - signal
 - payload

https://bugzilla.gnome.org/show_bug.cgi?id=620913

Signed-off-by: David Zeuthen <davidz@redhat.com>
2010-07-01 14:37:16 -04:00
Matthias Clasen
371a3373bb Correct env var names
and add a note about priority
2010-05-12 13:01:02 -04:00
Matthias Clasen
d7095dd470 Document DBUS address env vars 2010-05-11 22:35:59 -04:00
Matthias Clasen
8315eb77d5 Some documentation tweaks
Add links to the D-Bus docs in some places, and various
other additions.
2010-05-09 01:44:11 -04:00
David Zeuthen
5134a1d151 GDBus: Document environment variables in "Running GIO applications" 2010-05-07 14:36:07 -04:00
Matthias Clasen
f14e30818c Mention D-Bus functionality in the overview 2010-05-06 18:15:00 -04:00
Matthias Clasen
bd273f9e09 Merge the GSettings docs 2010-04-17 00:31:41 -04:00
Alexander Larsson
6ea86cc57f Update the docs for the new network APIs
This imports the network APIs into the gio reference docs, and cleans
up a bunch of gtk-doc warnings and documentation issues.
2009-05-18 13:07:43 +02:00
Matthias Clasen
981f9ed840 Avoid a filename conflict
svn path=/trunk/; revision=7192
2008-07-16 06:30:12 +00:00
A. Walton
096201834d Adds GIO_EXTRA_MODULES environment variable support, closing bug #523039.
2008-03-28  A. Walton  <awalton@svn.gnome.org>

	* giomodule.c (_g_io_modules_ensure_loaded):
	Adds GIO_EXTRA_MODULES environment variable support, closing bug 
	#523039.


svn path=/trunk/; revision=6768
2008-03-28 14:31:09 +00:00
Matthias Clasen
663d15d1a6 Document GVFS_DISABLE_FUSE
svn path=/trunk/; revision=6739
2008-03-19 20:36:56 +00:00
Matthias Clasen
f21fdabf2a Additions
svn path=/trunk/; revision=6494
2008-02-11 07:18:56 +00:00
Matthias Clasen
04213a8f72 Additions
svn path=/trunk/; revision=6359
2008-01-23 06:24:27 +00:00
Alexander Larsson
67586ddfa4 Some minor fixes and additions.
2007-12-19  Alexander Larsson  <alexl@redhat.com>

        * gio/migrating.xml:
        * gio/overview.xml:
	Some minor fixes and additions.


svn path=/trunk/; revision=6154
2007-12-19 11:19:12 +00:00
Matthias Clasen
2df62bf0ed Flesh out the docs
svn path=/trunk/; revision=6150
2007-12-18 03:14:39 +00:00
Matthias Clasen
c0cc7663cb Additions
svn path=/trunk/; revision=6148
2007-12-18 00:56:35 +00:00
Matthias Clasen
66ff85f3ac Stub of a migration chapter Stub of an overview Overview diagram taken
2007-12-17  Matthias Clasen <mclasen@redhat.com>

        * gio/migration.xml: Stub of a migration chapter
        * gio/overview.xml: Stub of an overview
        * gio/gvfs-overview.{odg,png}: Overview diagram taken
        from Alex Guadec slides.

        * gio/Makefile.am:
        * gio/gio-docs.xml: Include these


svn path=/trunk/; revision=6145
2007-12-17 17:28:40 +00:00