Implement a nonblocking version of FdConnection. The initial
implementation will be somewhat slower than the blocking one for large
packet sizes, due to an extra copy when coalescing an IOVector into an
apacket, but is still substantially faster for small packets.
Test: adb_benchmark
Change-Id: I4900c9ddf685d3bd557b8cb43958452ecb23db53
Profiling of adb_benchmark revealed that something like half of the CPU
time was being spent in malloc and free, which was odd because the
benchmark repeatedly mallocs and frees allocations of the same size. It
turns out that our default configuration of jemalloc will purge after
every free. Configure jemalloc to not do this, for gains of over 100%
on adb_benchmark, and up to 25% (on walleye USB3) in real-life.
Test: adb_benchmark
Change-Id: I602dd1645c3d21709c7f6a78903511ce4d576558
This reverts commit 2ef56a1174.
host_supported is broken in cc_benchmark on Mac, but we probably don't
actually too much about the host benchmarks, so just delete the line.
Bug: http://b/77585931
Test: treehugger
Change-Id: I8898b4037a3faf8e8dee2a99498a6f84e642b92b
Josh Gao
David Brazdil