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core: replenish UTCB quota in exception case

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Fixes #4933
This commit is contained in:
Christian Prochaska 2023-06-26 12:09:56 +02:00 committed by Norman Feske
parent ea294fff0c
commit 8264b63e0b
1 changed files with 49 additions and 42 deletions
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91
repos/base/src/core/cpu_session_component.cc
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@ -35,56 +35,63 @@ Thread_capability Cpu_session_component::create_thread(Capability<Pd_session> pd
withdraw(Ram_quota{_utcb_quota_size()});
Cpu_thread_component *thread = 0;
try {
if (weight.value == 0) {
warning("Thread ", name, ": Bad weight 0, using default weight instead.");
weight = Weight();
}
if (weight.value > QUOTA_LIMIT) {
warning("Thread ", name, ": Oversized weight ", weight.value, ", using limit instead.");
weight = Weight(QUOTA_LIMIT);
}
Cpu_thread_component *thread = 0;
Mutex::Guard thread_list_lock_guard(_thread_list_lock);
/*
* Create thread associated with its protection domain
*/
auto create_thread_lambda = [&] (Pd_session_component *pd) {
if (!pd) {
error("create_thread: invalid PD argument");
throw Thread_creation_failed();
if (weight.value == 0) {
warning("Thread ", name, ": Bad weight 0, using default weight instead.");
weight = Weight();
}
if (weight.value > QUOTA_LIMIT) {
warning("Thread ", name, ": Oversized weight ", weight.value, ", using limit instead.");
weight = Weight(QUOTA_LIMIT);
}
Mutex::Guard slab_lock_guard(_thread_alloc_lock);
thread = new (&_thread_alloc)
Cpu_thread_component(
cap(), _thread_ep, _pager_ep, *pd, _trace_control_area,
_trace_sources, weight, _weight_to_quota(weight.value),
_thread_affinity(affinity), _label, thread_name,
_priority, utcb);
};
Mutex::Guard thread_list_lock_guard(_thread_list_lock);
/*
* Create thread associated with its protection domain
*/
auto create_thread_lambda = [&] (Pd_session_component *pd) {
if (!pd) {
error("create_thread: invalid PD argument");
throw Thread_creation_failed();
}
Mutex::Guard slab_lock_guard(_thread_alloc_lock);
thread = new (&_thread_alloc)
Cpu_thread_component(
cap(), _thread_ep, _pager_ep, *pd, _trace_control_area,
_trace_sources, weight, _weight_to_quota(weight.value),
_thread_affinity(affinity), _label, thread_name,
_priority, utcb);
};
try {
_incr_weight(weight.value);
_thread_ep.apply(pd_cap, create_thread_lambda);
} catch (Allocator::Out_of_memory) {
_decr_weight(weight.value);
throw Out_of_ram();
} catch (Native_capability::Reference_count_overflow) {
_decr_weight(weight.value);
throw Thread_creation_failed();
} catch (...) {
_decr_weight(weight.value);
throw;
}
thread->session_exception_sigh(_exception_sigh);
_thread_list.insert(thread);
return thread->cap();
try {
_incr_weight(weight.value);
_thread_ep.apply(pd_cap, create_thread_lambda);
} catch (Allocator::Out_of_memory) {
_decr_weight(weight.value);
throw Out_of_ram();
} catch (Native_capability::Reference_count_overflow) {
_decr_weight(weight.value);
throw Thread_creation_failed();
} catch (...) {
_decr_weight(weight.value);
replenish(Ram_quota{_utcb_quota_size()});
throw;
}
thread->session_exception_sigh(_exception_sigh);
_thread_list.insert(thread);
return thread->cap();
}