1156900 - Because JSGC_MODE_GLOBAL, testing function gc(someObject) always schedules every zone for GC

Status: NEW

(Core :: JavaScript Engine, defect, P3)

Description

[Nick Fitzgerald [:fitzgen] [⏰PST; UTC-8]]

Spin off from bug 1150253

gc(someObject) is supposed to only GC the given object's zone (and any other zones that happen to be scheduled already) but because of JSGC_MODE_GLOBAL, every zone gets scheduled for GC by GCRuntime::scanZonesBeforeGC.

This only became a problem for me when I ported jit-tests to xpcshell-tests. Maybe they have different JSGC_MODEs?

I tried setting JSGC_MODE_WHATEVER depending on if an argument was passed to the gc testing function, but that causes a bunch of existing jit-tests to fail.

It sure does render the gc testing function less useful, though.

Comment 1

[Matthew Gaudet (he/him) [:mgaudet]]

(This needs more testing)