tree cb73f09a77a1ba58331eb299bb8dd1e6eafb6eaa
parent 81d38f74219774d87389f83f23595ffc8fe814b1
author Mathieu Chartier <mathieuc@google.com> 1425925817 -0700
committer Mathieu Chartier <mathieuc@google.com> 1425936302 -0700

Trim arenas for JIT

Moved arena pool into the runtime. Added arena trimming to arena
pool. When called, this madvises the used memory.

Changed the JIT compiler to trim arenas after compilation. Changed
the arena mmap name to dalvik-LinearAlloc.

Native PSS before:
  80353 kB: Native
  80775 kB: Native
  78116 kB: Native
After:
  73357 kB: Native
  70181 kB: Native
  70306 kB: Native

Bug: 17950037
Bug: 17643507
Bug: 19264997

Change-Id: I63e7a898fd6e909c2c677fa57b5917a7b1398930