Memory pressure

Create continuous memory pressure by adjusting
a child process's oom score and allocate in
the child. When a child is killed by
the low-memory-killer, fork another process and
continues until the program is killed or certain
number of iterations has reached.

Bug: 63926541
Test: run mem-pressure on target
Change-Id: Ic8ee60da7519c750de4bd690f26e31fa80c5cd49
2 files changed