Add configurable mailbox flushing on terminate#28
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Introduce the flush_mailbox_on_terminate option (type: false | {true, N},
default: false). When enabled, up to N pending mailbox messages and the
total mailbox count are written to the process dictionary under the key
mailbox_summary before the process exits. The remaining messages are then
drained to prevent proc_lib crash reports from pretty-printing potentially
large payloads.
The flush now happens before Module:terminate/2 is called at all exit
points, so the terminate callback can inspect or forward the summary.
Add two CT test cases covering the disabled (default) and enabled paths,
and document the new option in the README.
kjnilsson
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lhoguin
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Mar 31, 2026
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Introduce the flush_mailbox_on_terminate option (type: false | {true, N}, default: false). When enabled, up to N pending mailbox messages and the total mailbox count are written to the process dictionary under the key mailbox_summary before the process exits. The remaining messages are then drained to prevent proc_lib crash reports from pretty-printing potentially large payloads.
The flush now happens before Module:terminate/2 is called at all exit points, so the terminate callback can inspect or forward the summary. Add two CT test cases covering the disabled (default) and enabled paths, and document the new option in the README.