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Abandon Init::Traditional_child_policy, fix #1449

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This commit is contained in:
Norman Feske 2015-03-16 14:56:29 +01:00 committed by Christian Helmuth
parent d312f840bd
commit 2ddf941660
2 changed files with 60 additions and 119 deletions
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66
repos/demo/include/launchpad/launchpad.h
View File

@ -28,8 +28,23 @@
#include <init/child.h>
class Launchpad_child_policy : public Init::Traditional_child_policy
class Launchpad_child_policy : public Genode::Child_policy,
public Genode::Client
{
private:
typedef Genode::String<64> Name;
Name const _name;
Genode::Server *_server;
Genode::Service_registry *_parent_services;
Genode::Service_registry *_child_services;
Genode::Dataspace_capability _config_ds;
Genode::Rpc_entrypoint *_parent_entrypoint;
Init::Child_policy_enforce_labeling _labeling_policy;
Init::Child_policy_provide_rom_file _config_policy;
Init::Child_policy_provide_rom_file _binary_policy;
public:
Launchpad_child_policy(const char *name,
@ -40,11 +55,19 @@ class Launchpad_child_policy : public Init::Traditional_child_policy
Genode::Dataspace_capability binary_ds,
Genode::Rpc_entrypoint *parent_entrypoint)
:
Init::Traditional_child_policy(name, server, parent_services,
child_services, config_ds,
binary_ds, 0, 0, 0, parent_entrypoint)
_name(name),
_server(server),
_parent_services(parent_services),
_child_services(child_services),
_config_ds(config_ds),
_parent_entrypoint(parent_entrypoint),
_labeling_policy(_name.string()),
_config_policy("config", config_ds, _parent_entrypoint),
_binary_policy("binary", binary_ds, _parent_entrypoint)
{ }
const char *name() const { return _name.string(); }
Genode::Service *resolve_session_request(const char *service_name,
const char *args)
{
@ -86,6 +109,38 @@ class Launchpad_child_policy : public Init::Traditional_child_policy
return _child_services->wait_for_service(service_name,
&client, name());
}
void filter_session_args(const char *service, char *args,
Genode::size_t args_len)
{
_labeling_policy.filter_session_args(service, args, args_len);
}
bool announce_service(const char *service_name,
Genode::Root_capability root,
Genode::Allocator *alloc,
Genode::Server * /*server*/)
{
if (_child_services->find(service_name)) {
PWRN("%s: service %s is already registered",
name(), service_name);
return false;
}
/* XXX remove potential race between checking for and inserting service */
_child_services->insert(new (alloc)
Genode::Child_service(service_name, root, _server));
Genode::printf("%s registered service %s\n", name(), service_name);
return true;
}
void unregister_services()
{
Genode::Service *rs;
while ((rs = _child_services->find_by_server(_server)))
_child_services->remove(rs);
}
};
@ -192,6 +247,7 @@ class Launchpad
*/
void process_config();
/*************************
** Configuring the GUI **
*************************/
@ -210,8 +266,6 @@ class Launchpad
virtual void remove_child(const char *name,
Genode::Allocator *alloc) { }
// virtual void child_quota(const char *name, unsigned long quota) { }
Launchpad_child *start_child(const char *prg_name, unsigned long quota,
Genode::Dataspace_capability config_ds);

113
repos/os/include/init/child_policy.h
View File

@ -311,119 +311,6 @@ class Init::Child_policy_redirect_rom_file
Genode::snprintf(buf, sizeof(buf), "\"%s%s\"", label, _to);
Genode::Arg_string::set_arg(args, args_len, "label", buf);
}
};
class Init::Traditional_child_policy : public Genode::Child_policy,
public Genode::Client
{
protected:
enum { NAME_LEN = 64 };
char _name[NAME_LEN];
char const *_root;
Genode::Server *_server;
Genode::Service_registry *_parent_services;
Genode::Service_registry *_child_services;
Genode::Dataspace_capability _config_ds;
Genode::Rpc_entrypoint *_parent_entrypoint;
Child_policy_enforce_labeling _labeling_policy;
Child_policy_handle_cpu_priorities _priority_policy;
Child_policy_provide_rom_file _config_policy;
Child_policy_provide_rom_file _binary_policy;
public:
/**
* Constructor
*/
Traditional_child_policy(const char *name,
Genode::Server *server,
Genode::Service_registry *parent_services,
Genode::Service_registry *child_services,
Genode::Dataspace_capability config_ds,
Genode::Dataspace_capability binary_ds,
long prio_levels_log2,
long priority,
char const *root,
Genode::Rpc_entrypoint *parent_entrypoint)
:
_root(root),
_server(server),
_parent_services(parent_services),
_child_services(child_services),
_config_ds(config_ds),
_parent_entrypoint(parent_entrypoint),
_labeling_policy(_name),
_priority_policy(prio_levels_log2, priority),
_config_policy("config", config_ds, _parent_entrypoint),
_binary_policy("binary", binary_ds, _parent_entrypoint)
{
Genode::strncpy(_name, name, sizeof(_name));
}
const char *name() const { return _name; }
Genode::Service *resolve_session_request(const char *service_name,
const char *args)
{
Genode::Service *service;
/* check for config file request */
if ((service = _config_policy.resolve_session_request(service_name, args)))
return service;
/* check for binary file request */
if ((service = _binary_policy.resolve_session_request(service_name, args)))
return service;
/* check for services provided by the parent */
if ((service = _parent_services->find(service_name)))
return service;
/*
* If the service is provided by one of our children use it,
* or wait for the service to become available.
*/
return _child_services->wait_for_service(service_name, this,
name());
}
void filter_session_args(const char *service, char *args,
Genode::size_t args_len)
{
_labeling_policy.filter_session_args(service, args, args_len);
_priority_policy.filter_session_args(service, args, args_len);
}
bool announce_service(const char *service_name,
Genode::Root_capability root,
Genode::Allocator *alloc,
Genode::Server * /*server*/)
{
if (_child_services->find(service_name)) {
PWRN("%s: service %s is already registered",
name(), service_name);
return false;
}
/* XXX remove potential race between checking for and inserting service */
_child_services->insert(new (alloc)
Genode::Child_service(service_name, root, _server));
Genode::printf("%s registered service %s\n", name(), service_name);
return true;
}
void unregister_services()
{
Genode::Service *rs;
while ((rs = _child_services->find_by_server(_server)))
_child_services->remove(rs);
}
};