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go/misc/cgo
Ian Lance Taylor ffd7d31787 runtime: unblock special glibc signals on each thread
Glibc uses some special signals for special thread operations.  These
signals will be used in programs that use cgo and invoke certain glibc
functions, such as setgid.  In order for this to work, these signals
need to not be masked by any thread.  Before this change, they were
being masked by programs that used os/signal.Notify, because it
carefully masks all non-thread-specific signals in all threads so that a
dedicated thread will collect and report those signals (see ensureSigM
in signal1_unix.go).

This change adds the two glibc special signals to the set of signals
that are unmasked in each thread.

Fixes #12498.

Change-Id: I797d71a099a2169c186f024185d44a2e1972d4ad
Reviewed-on: https://go-review.googlesource.com/14297
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-09-14 21:59:54 +00:00
..
errors build: convert run.bash, run.bat, and run.rc into a Go program 2015-03-03 23:22:11 +00:00
gmp Fix several out of date references to 4g/5g/6g/8g/9g. 2015-06-26 03:38:21 +00:00
life
nocgo cmd/ld: really import runtime/cgo for external link 2014-05-20 21:36:50 -07:00
stdio
test runtime: unblock special glibc signals on each thread 2015-09-14 21:59:54 +00:00
testasan runtime: more flexible heap memory mapping on 64-bits 2013-06-12 18:47:16 +04:00
testcarchive cmd/go: install headers for c-archive/c-shared cgo exports 2015-05-07 17:39:56 +00:00
testcshared cmd/internal/ld: put read-only relocated data into .data.rel.ro when making a shared object 2015-09-08 23:34:16 +00:00
testgodefs build: convert run.bash, run.bat, and run.rc into a Go program 2015-03-03 23:22:11 +00:00
testshared cmd/internal/ld: put read-only relocated data into .data.rel.ro when making a shared object 2015-09-08 23:34:16 +00:00
testsigfwd runtime: signal forwarding 2015-04-24 05:19:39 +00:00
testso cmd/dist: convert testso test into Go 2015-06-12 04:33:50 +00:00
testsovar misc/cgo/testsovar: needs the extern keyword to export variables on non-windows platforms 2015-07-21 18:10:57 +00:00
testtls misc/cgo/testtls: make test less flaky 2014-01-21 19:44:51 -05:00