tree 61e2d3aa7268ce49fe77715593896f59feb92fe6
parent 32710dd4a0232149002a5ae7bde1c640cdffd564
author Andreas Gampe <agampe@google.com> 1397756109 -0700
committer Andreas Gampe <agampe@google.com> 1404978664 -0700

Use memory chunks for monitors on LP64

Monitor IDs in lock words are only 30b. On a 32b system that works
fine, as memory is usually aligned enough that shifting works out.
On 64b systems, the virtual memory space is too large for that.
This adds memory chunks into which we allocate the monitors so that
we have base_addr + offset and can use the offset as the monitor ID.
To allow for relatively compact but growable storage, we use a list
of chunks.

Added a global lock for the monitor pool.

Change-Id: I0e290c4914a2556e0b2eef9902422d7c4dcf536d