2 Commits

Author	SHA1	Message	Date
Russ Cox	8080384a68	test: use testlib (third 100) ... X ,s;^// \$G (\$D/)?\$F\.go *$;// compile;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A *$;// build;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A && \./\$A\.out *$;// run;g X ,s;^// errchk \$G( -e)? (\$D/)?\$F\.go *$;// errorcheck;g R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/5656083	2012-02-16 23:49:59 -05:00
Dmitriy Vyukov	5695915833	runtime: fix spurious deadlock reporting ... Fixes #2337. Unfortunate sequence of events is: 1. maxcpu=2, mcpu=1, grunning=1 2. starttheworld creates an extra M: maxcpu=2, mcpu=2, grunning=1 4. the goroutine calls runtime.GOMAXPROCS(1) maxcpu=1, mcpu=2, grunning=1 5. since it sees mcpu>maxcpu, it calls gosched() 6. schedule() deschedules the goroutine: maxcpu=1, mcpu=1, grunning=0 7. schedule() call getnextandunlock() which fails to pick up the goroutine again, because canaddcpu() fails, because mcpu==maxcpu 8. then it sees that grunning==0, reports deadlock and terminates R=golang-dev, rsc CC=golang-dev https://golang.org/cl/5191044	2011-10-06 18:10:14 +03:00