1917904 - Allow passing mach ports into content processes at startup

Status: RESOLVED FIXED

(Core :: IPC, enhancement)

Description

[Nika Layzell [:nika] (ni? for response)]

This would build on the work in bug 1440207 to allow passing mach ports with geckoargs into content processes on macOS. The ports would be included in the initial messages between the parent and content processes which are also used for transferring a task_t.

This is necessary to allow unifying shared memory implementations on macOS so we only have a single (mach-based) shared memory implementation (as there are various shared memory objects which are passed at startup on macOS which currently use posix shared memory).

Comment 1

[Nika Layzell [:nika] (ni? for response)]

Attachment: Bug 1917904 - Support passing mach ports into new processes, r=#ipc-reviewers!

This builds on the support from bug 1440207 to allow passing mach ports into
new content processes. This is done using the existing initial mach IPC already
used to transfer a mach task port to the parent process on child process
creation.

Comment 2

[Nika Layzell [:nika] (ni? for response)]

Attachment: Bug 1917904 - Part 2: iOS support for mach port passing, r=#ipc-reviewers!

Depends on D221708

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/8253fd9c090d
Support passing mach ports into new processes, r=ipc-reviewers,jld

Comment 4

[amarc]

https://hg.mozilla.org/mozilla-central/rev/8253fd9c090d