Drop-in replacement for sync's RWLock
~/gopath/src/github.com/gramework/sync % go test -bench . -benchmem
testing: warning: no tests to run
BenchmarkGrameworkRWMutex/1-4 100000000 22.3 ns/op 0 B/op 0 allocs/op
BenchmarkGrameworkRWMutex/4-4 20000000 64.8 ns/op 0 B/op 0 allocs/op
BenchmarkGrameworkRWMutex/16-4 20000000 64.7 ns/op 0 B/op 0 allocs/op
BenchmarkGrameworkRWMutex/64-4 20000000 64.4 ns/op 0 B/op 0 allocs/op
BenchmarkGrameworkRWMutex/256-4 20000000 65.1 ns/op 0 B/op 0 allocs/op
BenchmarkOrigRWMutex/1-4 100000000 23.3 ns/op 0 B/op 0 allocs/op
BenchmarkOrigRWMutex/4-4 20000000 70.5 ns/op 0 B/op 0 allocs/op
BenchmarkOrigRWMutex/16-4 20000000 71.4 ns/op 0 B/op 0 allocs/op
BenchmarkOrigRWMutex/64-4 20000000 73.6 ns/op 0 B/op 0 allocs/op
BenchmarkOrigRWMutex/256-4 20000000 73.4 ns/op 0 B/op 0 allocs/op
PASS
ok github.com/gramework/sync 16.126s
(note: first two lines was modified: I've put two tabs after the test name.)