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base: catch exceptions in rm_session

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For base-nova thread creation related exception can be thrown, since the
Pager_objects are threads. Catch the exception and re-throw the
expected/documented exception in rm_session.

This commit avoids that core dies with an unhandled exception if a thread
couldn't be created (e.g. because the limit has been reached).
This commit is contained in:
Alexander Boettcher
2012-12-10 14:56:32 +01:00
committed by Norman Feske
parent df3c0d4786
commit 9cdf062ee6
1 changed files with 4 additions and 2 deletions
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6
base/src/core/rm_session_component.cc
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@ -293,6 +293,7 @@ void Rm_faulter::fault(Rm_session_component *faulting_rm_session,
void Rm_faulter::dissolve_from_faulting_rm_session() void Rm_faulter::dissolve_from_faulting_rm_session()
{ {
/* serialize access */
Lock::Guard lock_guard(_lock); Lock::Guard lock_guard(_lock);
if (_faulting_rm_session) if (_faulting_rm_session)
@ -326,8 +327,7 @@ Rm_session_component::attach(Dataspace_capability ds_cap, size_t size,
Lock::Guard lock_guard(_lock); Lock::Guard lock_guard(_lock);
/* offset must be positive and page-aligned */ /* offset must be positive and page-aligned */
if (offset < 0 if (offset < 0 || align_addr(offset, get_page_size_log2()) != offset)
|| align_addr(offset, get_page_size_log2()) != offset)
throw Invalid_args(); throw Invalid_args();
/* check dataspace validity */ /* check dataspace validity */
@ -577,6 +577,8 @@ Pager_capability Rm_session_component::add_client(Thread_capability thread)
Rm_client *cl; Rm_client *cl;
try { cl = new(&_client_slab) Rm_client(this, badge); } try { cl = new(&_client_slab) Rm_client(this, badge); }
catch (Allocator::Out_of_memory) { throw Out_of_metadata(); } catch (Allocator::Out_of_memory) { throw Out_of_metadata(); }
catch (Cpu_session::Thread_creation_failed) { throw Out_of_metadata(); }
catch (Thread_base::Stack_alloc_failed) { throw Out_of_metadata(); }
_clients.insert(cl); _clients.insert(cl);