Hi,
> However the child proccess (the GUI) when tries to read data from the pipe
> it hangs. If you run this program you can see that the printf( "BEFORE READ
> LINE\n" ) is printed but the printf( "AFTER READ LINE\n" ) is not..
> What I'm doing wrong?
What do you means with *hang*? or it's being unresponsive?, the g_io_channel_*
family functions use a GIOFuncs, defined at giochannel.h each for it's I/O
operation, with g_io_channel_read_line you can see they are basically a read()
syscall wrapper, see g_io_unix_read in giounix.c. In blocking state. You can't
see printf("AFTER LINE\n") because g_io_channel_read_line is blocking your
process and also it's GTK+ main loop, with blocked main loop, your GUI is being
unresponsive and not updated through it's main loop.
With g_io_channel_read_line you have to make sure the sender send a terminating
character, because it will read until the terminating character reached, and
maybe this made the block. Why not try with g_io_channel_read_chars? you can
try to set number of bytes to read there? ... a simple debug heh ;)
- Ardhan
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