[vm] Compute per-HeapPage usage during sweeping.

[vm] Compute per-HeapPage usage during sweeping.

To be used by compacting GC.

R=asiva@google.com, danunez@google.com

Committed: https://github.com/dart-lang/sdk/commit/7af0a05a2ec6ec55d4a4f6e4e2e750a3170c33e1

[rmacnak, 2017-08-10 18:17:56]

rmacnak@google.com changed reviewers:
+ asiva@google.com, danunez@google.com

[danunez, 2017-08-10 18:20:40]

lgtm w/ comment

Why collect in terms in bytes instead of words, like we do when reporting Usage
and Capcity for new space?

[siva, 2017-08-10 21:04:18]

lgtm

[rmacnak, 2017-08-11 19:39:44]

On 2017/08/10 18:20:40, danunez wrote:
> lgtm w/ comment
> 
> Why collect in terms in bytes instead of words, like we do when reporting
Usage
> and Capcity for new space?

The iteration already has the size in bytes available.

[rmacnak, 2017-08-11 20:06:41]

Description was changed from

==========
[vm] Compute per-HeapPage usage during sweeping.

To be used by compacting GC.
==========

to

==========
[vm] Compute per-HeapPage usage during sweeping.

To be used by compacting GC.

R=asiva@google.com, danunez@google.com

Committed:
https://github.com/dart-lang/sdk/commit/7af0a05a2ec6ec55d4a4f6e4e2e750a3170c33e1
==========

[rmacnak, 2017-08-11 20:06:42]

Committed patchset #1 (id:1) manually as
7af0a05a2ec6ec55d4a4f6e4e2e750a3170c33e1 (presubmit successful).