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Re-implementation of the loader service, ref #187

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The original loader service was primarily motivated by the
browser-plugin scenario presented on our live CD. The new version
implements a more general session interface, which widens the
application scope of the service and, at the same time, reduces its
implementation complexity.

The complexity reduction is achieved by removing the original limitation
of supplying the new sub system as a single binary blob only. The server
used to implement heuristics and functionality for dealing with
different kinds of blobs such as ELF images or TAR archives. This has
been replaced by a session-local ROM service, which can be equipped with
an arbitrary number of ROM modules supplied by the loader client prior
starting the new sub system. Even though the TAR support has been
removed, a separate instance of the 'tar_rom' service can be used within
the subsystem to provide the formerly built-in functionality.
This commit is contained in:
Norman Feske
2012-04-17 18:46:14 +02:00
parent e9814e0692
commit bcf6714eff
32 changed files with 1474 additions and 1767 deletions
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45
os/include/loader_session/client.h
View File

@ -21,35 +21,34 @@
namespace Loader {
struct Session_client : Genode::Rpc_client<Session>
struct Session_client : Rpc_client<Session>
{
Session_client(Loader::Session_capability session)
: Genode::Rpc_client<Session>(session) { }
explicit Session_client(Loader::Session_capability session)
: Rpc_client<Session>(session) { }
Dataspace_capability alloc_rom_module(Name const &name, size_t size) {
return call<Rpc_alloc_rom_module>(name, size); }
/******************************
** Loader-session interface **
******************************/
void commit_rom_module(Name const &name) {
call<Rpc_commit_rom_module>(name); }
Genode::Dataspace_capability dataspace() {
return call<Rpc_dataspace>(); }
void ram_quota(size_t quantum) {
call<Rpc_ram_quota>(quantum); }
void start(Start_args const &args,
int max_width, int max_height,
Genode::Alarm::Time timeout,
Name const &name = "")
{
call<Rpc_start>(args, max_width, max_height, timeout, name);
}
void constrain_geometry(int width, int height) {
call<Rpc_constrain_geometry>(width, height); }
Nitpicker::View_capability view(int *w, int *h, int *buf_x, int *buf_y)
{
int dummy = 0;
return call<Rpc_view>(w ? w : &dummy,
h ? h : &dummy,
buf_x ? buf_x : &dummy,
buf_y ? buf_y : &dummy);
}
void view_ready_sigh(Signal_context_capability sigh) {
call<Rpc_view_ready_sigh>(sigh); }
void start(Name const &binary, Name const &label = "") {
call<Rpc_start>(binary, label); }
Nitpicker::View_capability view() {
return call<Rpc_view>(); }
View_geometry view_geometry() {
return call<Rpc_view_geometry>(); }
};
}