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base-hw: Full quota upgrading in signal receiver.

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Fix #518
This commit is contained in:
Martin Stein 2012-11-23 16:47:42 +01:00 committed by Norman Feske
parent 027916d961
commit 88b370bda2
1 changed files with 20 additions and 5 deletions
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25
base-hw/src/base/signal/signal.cc
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@ -35,12 +35,26 @@ static Signal_connection * signal_connection()
*********************/
Signal_receiver::Signal_receiver() :
_cap(signal_connection()->alloc_receiver())
Signal_receiver::Signal_receiver()
{
if (!_cap.valid()) {
PERR("%s: Failed to create receiver", __PRETTY_FUNCTION__);
while (1) ;
/* create a kernel object that corresponds to the receiver */
bool session_upgraded = 0;
Signal_connection * const s = signal_connection();
while (1) {
try {
_cap = s->alloc_receiver();
break;
} catch (Signal_session::Out_of_metadata)
{
/* upgrade session quota and try again, but only once */
if (session_upgraded) {
PDBG("Failed to alloc signal receiver");
break;
}
PINF("upgrade quota donation for Signal session");
env()->parent()->upgrade(s->cap(), "ram_quota=4K");
session_upgraded = 1;
}
}
}
@ -75,6 +89,7 @@ Signal_context_capability Signal_receiver::manage(Signal_context * const c)
} catch (Signal_session::Out_of_metadata)
{
/* upgrade session quota and try again, but only once */
PINF("upgrade quota donation for Signal session");
if (session_upgraded) return Signal_context_capability();
env()->parent()->upgrade(s->cap(), "ram_quota=4K");
session_upgraded = 1;