tree 7b495f0a7a241dff72d7e564c4e9ef97cb1e61b1
parent 5b4eaf71f78bdb2e1c8b88a84eba68510dd871ac
author Tom Sepez <tsepez@chromium.org> 1600279988 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1600279988 +0000

Introduce PDFFuzzerPublic::MaybeForceGCAndPump().

Since fuzzers don't have their own message loops, those that
make cppgc heap allocations will need to periodically invoke an
explicit GC and pump, lest they grow without bound. Only garbage
collect every Nth call to keep performance reasonable (N=1000 for
the moment for no particular reason).

In turn, we need to have a reference to an actual isolate in order
to pump the loop, so explicitly create one.

We don't actually have any such fuzzers at the moment, but this
prepares for their introduction in future CLs.

-- reset fuzzer state on teardown while we're at it.

Bug: pdfium:1563
Change-Id: Ia854c8ea0a4e9b7168b192c82c8aba27b2aa876b
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/73650
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>