5 Commits

Author	SHA1	Message	Date
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
Joel Sing	060ffabd18	runtime: improve locking on openbsd ... Implement a locking model based on the current linux model - a tri-state mutex with active spinning, passive spinning and sleeping. R=golang-dev, dvyukov, rsc CC=golang-dev https://golang.org/cl/4974043	2011-10-09 00:56:13 +11:00
Joel Sing	b2f1eba324	runtime: set runtime ncpu on openbsd ... Set the runtime ncpu based on the hw.ncpu sysctl. R=golang-dev, rsc CC=golang-dev https://golang.org/cl/5191043	2011-10-05 13:16:43 -04:00
Joel Sing	8aa2591b13	runtime: openbsd thread tweaks ... - Rename sys_sched_yield() to osyield() as this is now defined in asm.h. - Only print kern.rtheads message if rfork_thread() failed with ENOTSUP. - Remove unused variables. R=rsc CC=golang-dev https://golang.org/cl/4973043	2011-08-29 09:35:13 -04:00
Joel Sing	21ac258e07	runtime: openbsd amd64 runtime support ... Add support for the go runtime on openbsd/amd64. This is based on the existing freebsd runtime. Threads are implemented using OpenBSD's rthreads, which are currently disabled by default, however can be enabled via the kern.rthreads sysctl. For now, cgo is disabled. R=rsc CC=golang-dev https://golang.org/cl/4815067	2011-08-08 09:56:38 -04:00