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Streamline exception types

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This patch reduces the number of exception types by facilitating
globally defined exceptions for common usage patterns shared by most
services. In particular, RPC functions that demand a session-resource
upgrade not longer reflect this condition via a session-specific
exception but via the 'Out_of_ram' or 'Out_of_caps' types.

Furthermore, the 'Parent::Service_denied', 'Parent::Unavailable',
'Root::Invalid_args', 'Root::Unavailable', 'Service::Invalid_args',
'Service::Unavailable', and 'Local_service::Factory::Denied' types have
been replaced by the single 'Service_denied' exception type defined in
'session/session.h'.

This consolidation eases the error handling (there are fewer exceptions
to handle), alleviates the need to convert exceptions along the
session-creation call chain, and avoids possible aliasing problems
(catching the wrong type with the same name but living in a different
scope).
This commit is contained in:
Norman Feske
2017-05-07 22:03:22 +02:00
committed by Christian Helmuth
parent 1f4f119b1e
commit 4d442bca30
180 changed files with 932 additions and 834 deletions
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4
repos/base-foc/src/core/irq_session_component.cc
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@@ -191,13 +191,13 @@ Irq_session_component::Irq_session_component(Range_allocator *irq_alloc,
if (msi) {
if (msi_alloc.get(irq_args.irq_number(), 1)) {
error("unavailable MSI ", irq_args.irq_number(), " requested");
throw Root::Unavailable();
throw Service_denied();
}
msi_alloc.set(irq_args.irq_number(), 1);
} else {
if (!irq_alloc || irq_alloc->alloc_addr(1, irq_args.irq_number()).error()) {
error("unavailable IRQ ", irq_args.irq_number(), " requested");
throw Root::Unavailable();
throw Service_denied();
}
}