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ee24bfc058
The change introduces 2 generic mutex implementations (futex- and semaphore-based). Each OS chooses a suitable mutex implementation and implements few callbacks (e.g. futex wait/wake). The CL reduces code duplication, extends some optimizations available only on Linux/Windows to other OSes and provides ground for futher optimizations. Chan finalizers are finally eliminated. (Linux/amd64, 8 HT cores) benchmark old new BenchmarkChanContended 83.6 77.8 ns/op BenchmarkChanContended-2 341 328 ns/op BenchmarkChanContended-4 382 383 ns/op BenchmarkChanContended-8 390 374 ns/op BenchmarkChanContended-16 313 291 ns/op (Darwin/amd64, 2 cores) benchmark old new BenchmarkChanContended 159 172 ns/op BenchmarkChanContended-2 6735 263 ns/op BenchmarkChanContended-4 10384 255 ns/op BenchmarkChanCreation 1174 407 ns/op BenchmarkChanCreation-2 4007 254 ns/op BenchmarkChanCreation-4 4029 246 ns/op R=rsc, jsing, hectorchu CC=golang-dev https://golang.org/cl/5140043 |
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--
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