VM: Tell lsan about mmap()ed regions used for our heap

VM: Tell lsan about mmap()ed regions used for our heap

The mmap()ed pages hold pointers to `VirtualMemory` objects. So we tell
lsan that the mmap()ed regions are roots.

R=vegorov@google.com

Committed: https://github.com/dart-lang/sdk/commit/a9fbe2004d3f1978930fdb837e2e10f4e88b9013

[kustermann, 2017-01-23 14:26:19]

kustermann@google.com changed reviewers:
+ vegorov@google.com

[Vyacheslav Egorov (Google), 2017-01-23 14:40:56]

lgtm

[zra, 2017-01-23 16:58:58]

zra@google.com changed reviewers:
+ zra@google.com

[zra, 2017-01-23 16:58:58]

https://codereview.chromium.org/2646363005/diff/1/runtime/vm/pages.cc
File runtime/vm/pages.cc (right):

https://codereview.chromium.org/2646363005/diff/1/runtime/vm/pages.cc#newcode8
runtime/vm/pages.cc:8: #include "platform/address_sanitizer.h"
DBC: alphabetize.

[kustermann, 2017-01-24 10:55:53]

Patchset #2 (id:20001) has been deleted

[kustermann, 2017-01-24 10:57:56]

Updated cl.

[kustermann, 2017-01-24 11:47:43]

Description was changed from

==========
VM: Tell lsan about mmap()ed regions used for our heap

The mmap()ed pages hold pointers to `VirtualMemory` objects. So we tell
lsan that the mmap()ed regions are roots.
==========

to

==========
VM: Tell lsan about mmap()ed regions used for our heap

The mmap()ed pages hold pointers to `VirtualMemory` objects. So we tell
lsan that the mmap()ed regions are roots.

R=vegorov@google.com

Committed:
https://github.com/dart-lang/sdk/commit/a9fbe2004d3f1978930fdb837e2e10f4e88b9013
==========

[kustermann, 2017-01-24 11:47:44]

Committed patchset #3 (id:60001) manually as
a9fbe2004d3f1978930fdb837e2e10f4e88b9013 (presubmit successful).

[Vyacheslav Egorov (Google), 2017-01-24 12:14:53]

lgtm