genode/repos/libports/src/test/lwip/pingpong
Norman Feske 4da52517c1 Simpify startup of dynamically linked binaries
This patch removes the component_entry_point library, which used to
proved a hook for the libc to intercept the call of the
'Component::construct' function. The mechansim has several shortcomings
(see the discussion in the associated issue) and was complex. So we
eventually discarded the approach in favor of the explicit handling of
the startup.

A regular Genode component provides a 'Component::construct' function,
which is determined by the dynamic linker via a symbol lookup.
For the time being, the dynamic linker falls back to looking up a 'main'
function if no 'Component::construct' function could be found.

The libc provides an implementation of 'Component::construct', which
sets up the libc's task handling and finally call the function
'Libc::Component::construct' from the context of the appllication task.
This function is expected to be provided by the libc-using application.
Consequently, Genode components that use the libc have to implement the
'Libc::Component::construct' function.

The new 'posix' library provides an implementation of
'Libc::Component::construct' that calls a main function. Hence, POSIX
programs that merely use the POSIX API merely have to add 'posix' to the
'LIBS' declaration in their 'target.mk' file. Their execution starts at
'main'.

Issue #2199
2017-01-13 13:06:52 +01:00
..
client Simpify startup of dynamically linked binaries 2017-01-13 13:06:52 +01:00
server Simpify startup of dynamically linked binaries 2017-01-13 13:06:52 +01:00
pingpong.cc base: avoid use of deprecated base/printf.h 2016-08-29 17:27:10 +02:00
pingpong.h Move repositories to 'repos/' subdirectory 2014-05-14 16:08:00 +02:00
README Move repositories to 'repos/' subdirectory 2014-05-14 16:08:00 +02:00

Pingpong is a simple test where a client sends ping packets with different
sizes to a server. The client has to specify the serverip in its config
as well as the start and end of the ping packet sizes in bytes.

! <start name="test-ping_client">
! 	<resource name="RAM" quantum="16M"/>
! 	<config>
! 		<argv verbose="1" serverip="x.x.x.x" startsize="256" endsize="32768" />
! 	</config>
! </start>

If verbose is set 1 the client and the server will print the id and the
size of each packet (packet header + payload size).