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rtc: extended session with set-signal

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A client may register a signal handler to be notified whenever the
RTC value was changed, i.e., a mis-configured clock was synchronized,
by calling 'set_sigh()'.

Issue #3450
This commit is contained in:
Josef Söntgen 2019-07-15 13:33:25 +02:00 committed by Christian Helmuth
parent 86cacd23bb
commit ea2b330158
3 changed files with 22 additions and 1 deletions
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3
repos/os/include/rtc_session/client.h
View File

@ -35,6 +35,9 @@ struct Rtc::Session_client : Genode::Rpc_client<Session>
** Session interface **
***********************/
void set_sigh(Genode::Signal_context_capability sigh) override {
call<Rpc_set_sigh>(sigh); }
Timestamp current_time() override { return call<Rpc_current_time>(); }
};

13
repos/os/include/rtc_session/rtc_session.h
View File

@ -19,6 +19,7 @@
#include <session/session.h>
#include <base/rpc.h>
#include <base/stdint.h>
#include <base/signal.h>
namespace Rtc {
struct Timestamp;
@ -60,6 +61,14 @@ struct Rtc::Session : Genode::Session
** Session interface **
***********************/
/**
* Register set signal handler
*
* \param sigh signal handler that is called when the RTC has
* been set
*/
virtual void set_sigh(Genode::Signal_context_capability sigh) = 0;
/**
* Query current time
*
@ -71,8 +80,10 @@ struct Rtc::Session : Genode::Session
** RPC interface **
*******************/
GENODE_RPC(Rpc_set_sigh, void, set_sigh,
Genode::Signal_context_capability);
GENODE_RPC(Rpc_current_time, Timestamp, current_time);
GENODE_RPC_INTERFACE(Rpc_current_time);
GENODE_RPC_INTERFACE(Rpc_set_sigh, Rpc_current_time);
};
#endif /* _INCLUDE__RTC_SESSION__RTC_SESSION_H_ */

7
repos/os/src/drivers/rtc/main.cc
View File

@ -33,6 +33,13 @@ struct Rtc::Session_component : public Genode::Rpc_object<Session>
{
Env &_env;
Signal_context_capability _set_sig_cap { };
void set_sigh(Signal_context_capability sigh) override
{
_set_sig_cap = sigh;
}
Timestamp current_time() override
{
Timestamp ret = Rtc::get_time(_env);