4 Commits

Author	SHA1	Message	Date
Russ Cox	86dcc431e9	runtime: hg revert -r 6ec0a5c12d75 ... That was the last build that was close to working. I will try that change again next week. Make is being very subtle today. At the reverted-to CL, the ARM traceback appears to be broken. I'll look into that next week too. R=golang-dev, r CC=golang-dev https://golang.org/cl/5492063	2011-12-16 18:50:40 -05:00
Russ Cox	bd9243da22	runtime: separate out auto-generated files ... R=golang-dev, r, r CC=golang-dev https://golang.org/cl/5493063	2011-12-16 17:04:32 -05:00
Russ Cox	3b860269ee	runtime: add timer support, use for package time ... This looks like it is just moving some code from time to runtime (and translating it to C), but the runtime can do a better job managing the goroutines, and it needs this functionality for its own maintenance (for example, for the garbage collector to hand back unused memory to the OS on a time delay). Might as well have just one copy of the timer logic, and runtime can't depend on time, so vice versa. It also unifies Sleep, NewTicker, and NewTimer behind one mechanism, so that there are no claims that one is more efficient than another. (For example, today people recommend using time.After instead of time.Sleep to avoid blocking an OS thread.) Fixes #1644. Fixes #1731. Fixes #2190. R=golang-dev, r, hectorchu, iant, iant, jsing, alex.brainman, dvyukov CC=golang-dev https://golang.org/cl/5334051	2011-11-09 15:17:05 -05:00
Dmitriy Vyukov	ee24bfc058	runtime: unify mutex code across OSes ... 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	2011-11-02 16:42:01 +03:00