1345568 - Windows content sandbox breaks refcount logging

Status: NEW

(Core :: Security: Process Sandboxing, enhancement, P5)

Description

[David Parks [:handyman]]

Refcount logging [1] needs to be able to open log files [2] for write.  It does it in each process but the current Windows sandbox settings don't allow it.  The file-open needs to be remoted.  This is not super-high priority but, in the interim, I changed the docs in [1] to mention that the tool only works with MOZ_DISABLE_CONTENT_SANDBOX=1 -- figuring this out isn't simple and refcount logging is slow enough that its annoying when it crashes.  We need to track this to remove that from the docs when the remoting work is done.

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[1] https://developer.mozilla.org/en-US/docs/Mozilla/Performance/Refcount_tracing_and_balancing
[2] https://dxr.mozilla.org/mozilla-central/rev/58753259bfeb3b818eac7870871b0aae1f8de64a/xpcom/base/nsTraceRefcnt.cpp#670