TCMalloc: support userland ASLR on Linux and Chrome OS

On Linux and Chrome OS, we implement user-land ASLR in TCMalloc
on 64 bits Intel architecture.

In this configuration, we are not constrained by the address space
and we don't mind fragmentation.
But to be on the safe side, we only ever fragment half of the
address space.

BUG=170133
NOTRY=true


Review URL: https://chromiumcodereview.appspot.com/12093035

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@179776 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: 1b556f8cab45938f0631db58eb4bcacc238de570
1 file changed
tree: f282680525d51fcdd0ab1aaef923cabc5ff81f27
  1. base/
  2. build/
  3. dbus/
  4. ipc/
  5. testing/
  6. third_party/