Norman Feske 6f1d3862cd base: introduce Env::try_session
The new 'Env::try_session' method mirrors the existing 'Env::session'
without implicitly handling exceptions of the types 'Out_of_ram',
'Out_of_caps', 'Insufficient_ram_quota', and 'Insufficient_cap_quota'.
It enables runtime environments like init to reflect those exceptions to
their children instead of paying the costs of implicit session-quota
upgrades out of the own pocket.

By changing the 'Parent_service' to use 'try_session', this patch fixes
a resource-exhaustion problem of init in Sculpt OS that occurred when
the GPU multiplexer created a large batch of IO_MEM sessions, with each
session requiring a second attempt with the session quota upgraded by
4 KiB.

Issue #3767
2021-10-14 11:02:12 +02:00
..
2020-05-18 10:16:13 +02:00
2021-10-14 11:02:12 +02:00

This source-code repository contains genuine low-level OS components and
interfaces of Genode. It solely depends on the framework's base API.