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runtime: don't always unblock all signals on dragonfly, freebsd and openbsd

Browse source 
https://golang.org/cl/10173 intrduced msigsave, ensureSigM and
_SigUnblock but didn't enable the new signal save/restore mechanism for
SIG{HUP,INT,QUIT,ABRT,TERM} on DragonFly BSD, FreeBSD and OpenBSD.

At present, it looks like they have the implementation. This change
enables the new mechanism on DragonFly BSD, FreeBSD and OpenBSD the same
as Darwin, NetBSD.

Change-Id: Ifb4b4743b3b4f50bfcdc7cf1fe1b59c377fa2a41
Reviewed-on: https://go-review.googlesource.com/18657
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Mikio Hara 2016-01-15 14:57:41 +09:00
parent 7345fa54c1
commit 6f59ccb052
7 changed files with 31 additions and 27 deletions
Download patch file Download diff file Expand all files Collapse all files

14
src/runtime/signal_openbsd.go
View file

@ -16,14 +16,14 @@ var sigtable = [...]sigTabT{
/* 1 */ {_SigNotify + _SigKill, "SIGHUP: terminal line hangup"},
/* 2 */ {_SigNotify + _SigKill, "SIGINT: interrupt"},
/* 3 */ {_SigNotify + _SigThrow, "SIGQUIT: quit"},
/* 4 */ {_SigThrow, "SIGILL: illegal instruction"},
/* 5 */ {_SigThrow, "SIGTRAP: trace trap"},
/* 4 */ {_SigThrow + _SigUnblock, "SIGILL: illegal instruction"},
/* 5 */ {_SigThrow + _SigUnblock, "SIGTRAP: trace trap"},
/* 6 */ {_SigNotify + _SigThrow, "SIGABRT: abort"},
/* 7 */ {_SigThrow, "SIGEMT: emulate instruction executed"},
/* 8 */ {_SigPanic, "SIGFPE: floating-point exception"},
/* 8 */ {_SigPanic + _SigUnblock, "SIGFPE: floating-point exception"},
/* 9 */ {0, "SIGKILL: kill"},
/* 10 */ {_SigPanic, "SIGBUS: bus error"},
/* 11 */ {_SigPanic, "SIGSEGV: segmentation violation"},
/* 10 */ {_SigPanic + _SigUnblock, "SIGBUS: bus error"},
/* 11 */ {_SigPanic + _SigUnblock, "SIGSEGV: segmentation violation"},
/* 12 */ {_SigThrow, "SIGSYS: bad system call"},
/* 13 */ {_SigNotify, "SIGPIPE: write to broken pipe"},
/* 14 */ {_SigNotify, "SIGALRM: alarm clock"},
@ -32,14 +32,14 @@ var sigtable = [...]sigTabT{
/* 17 */ {0, "SIGSTOP: stop"},
/* 18 */ {_SigNotify + _SigDefault, "SIGTSTP: keyboard stop"},
/* 19 */ {_SigNotify + _SigDefault, "SIGCONT: continue after stop"},
/* 20 */ {_SigNotify, "SIGCHLD: child status has changed"},
/* 20 */ {_SigNotify + _SigUnblock, "SIGCHLD: child status has changed"},
/* 21 */ {_SigNotify + _SigDefault, "SIGTTIN: background read from tty"},
/* 22 */ {_SigNotify + _SigDefault, "SIGTTOU: background write to tty"},
/* 23 */ {_SigNotify, "SIGIO: i/o now possible"},
/* 24 */ {_SigNotify, "SIGXCPU: cpu limit exceeded"},
/* 25 */ {_SigNotify, "SIGXFSZ: file size limit exceeded"},
/* 26 */ {_SigNotify, "SIGVTALRM: virtual alarm clock"},
/* 27 */ {_SigNotify, "SIGPROF: profiling alarm clock"},
/* 27 */ {_SigNotify + _SigUnblock, "SIGPROF: profiling alarm clock"},
/* 28 */ {_SigNotify, "SIGWINCH: window size change"},
/* 29 */ {_SigNotify, "SIGINFO: status request from keyboard"},
/* 30 */ {_SigNotify, "SIGUSR1: user-defined signal 1"},