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os: support reference ram cap for slaves 

Issue #1539
This commit is contained in:
Alexander Boettcher 2015-11-16 10:51:03 +01:00 committed by Christian Helmuth
parent e49a5ee19f
commit b902f42482
1 changed files with 9 additions and 13 deletions
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22
repos/os/include/os/slave.h
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@ -166,20 +166,15 @@ class Genode::Slave
class Quota_exceeded : public Genode::Exception { };
Resources(const char *label, Genode::size_t ram_quota)
Resources(const char *label, Genode::size_t ram_quota,
Ram_session_capability ram_ref_cap)
: pd(label), ram(label), cpu(label)
{
/*
* XXX derive donated quota from information to be provided by
* the used 'Connection' interfaces
*/
enum { DONATED_RAM_QUOTA = 128*1024 };
if (ram_quota > DONATED_RAM_QUOTA)
ram_quota -= DONATED_RAM_QUOTA;
else
ram.ref_account(ram_ref_cap);
Ram_session_client ram_ref(ram_ref_cap);
if (ram_ref.transfer_quota(ram.cap(), ram_quota))
throw Quota_exceeded();
ram.ref_account(Genode::env()->ram_session_cap());
Genode::env()->ram_session()->transfer_quota(ram.cap(), ram_quota);
}
};
@ -190,9 +185,10 @@ class Genode::Slave
Slave(Genode::Rpc_entrypoint &entrypoint,
Slave_policy &slave_policy,
Genode::size_t ram_quota)
Genode::size_t ram_quota,
Ram_session_capability ram_ref_cap = env()->ram_session_cap())
:
_resources(slave_policy.name(), ram_quota),
_resources(slave_policy.name(), ram_quota, ram_ref_cap),
_child(slave_policy.binary(), _resources.pd.cap(),
_resources.ram.cap(), _resources.cpu.cap(),
_resources.rm.cap(), &entrypoint, &slave_policy)