gecko/ipc/ipdl/test/cxx/PTestRaceDeferral.ipdl

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2011-01-11 23:07:17 -08:00
namespace mozilla {
namespace _ipdltest {
rpc protocol PTestRaceDeferral {
parent:
rpc Lose();
child:
async StartRace();
rpc Win();
rpc Rpc();
async __delete__();
// Test that messages deferred due to race resolution are
// re-considered when the winner makes later RPCs
// IPDL's type system can't express this protocol because the race
// resolution causes state to diverge for multiple steps, so we'll
// leave it "stateless"
/*
state START:
send StartRace goto DEFER;
state DEFER:
call Win goto PARENT;
answer Lose goto CHILD;
state PARENT:
// 'Lose' is received here but deferred
call Rpc goto PARENT_LOSE;
state PARENT_LOSE:
// Calling 'Rpc' undefers 'Lose', and it wins the "race" with 'Rpc'
answer Lose goto DONE;
state CHILD:
call Win goto CHILD_RPC;
state CHILD_RPC:
call Rpc goto DONE;
state DONE:
send __delete__;
*/
};
} // namespace _ipdltest
} // namespace mozilla