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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 |
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| .. | ||
| base | ||
| cpu | ||
| cpu_session | ||
| cpu_thread | ||
| dataspace | ||
| deprecated | ||
| drivers | ||
| io_mem_session | ||
| io_port_session | ||
| irq_session | ||
| log_session | ||
| parent | ||
| pd_session | ||
| region_map | ||
| rm_session | ||
| rom_session | ||
| root | ||
| session | ||
| spec | ||
| timer | ||
| timer_session | ||
| trace_session | ||
| util | ||
| vm_session | ||
| README | ||
This directory contains include files of interfaces that are exported by components to be used by other components. Each subdirectory corresponds to the component exporting the interface.