gcc/libgo
Ian Lance Taylor f6be1179bb runtime: prevent deadlock when profiling signal arrives during traceback
Traceback routines, e.g. callers and funcentry, may call
    __go_get_backtrace_state. If a profiling signal arrives while we
    are in the critical section of __go_get_backtrace_state, it tries
    to do a traceback, which also calls __go_get_backtrace_state,
    which tries to enter the same critical section and will deadlock.
    Prevent this deadlock by setting up runtime_in_callers before
    calling __go_get_backtrace_state.
    
    Found while investigating golang/go#29448. Will add a test in the
    next CL.
    
    Updates golang/go#29448.
    
    Reviewed-on: https://go-review.googlesource.com/c/156037

From-SVN: r267590
2019-01-05 00:40:04 +00:00
..
config re PR bootstrap/82856 (--enable-maintainter-mode broken by incompatiblity of gcc's required automake and modern Perl) 2018-10-31 20:46:17 +00:00
go runtime: delete export_arm_test.go 2018-12-27 16:34:50 +00:00
misc/cgo
runtime runtime: prevent deadlock when profiling signal arrives during traceback 2019-01-05 00:40:04 +00:00
testsuite re PR bootstrap/82856 (--enable-maintainter-mode broken by incompatiblity of gcc's required automake and modern Perl) 2018-10-31 20:46:17 +00:00
aclocal.m4 re PR bootstrap/82856 (--enable-maintainter-mode broken by incompatiblity of gcc's required automake and modern Perl) 2018-10-31 20:46:17 +00:00
check-packages.txt
config.h.in
configure re PR bootstrap/82856 (--enable-maintainter-mode broken by incompatiblity of gcc's required automake and modern Perl) 2018-10-31 20:46:17 +00:00
configure.ac re PR bootstrap/82856 (--enable-maintainter-mode broken by incompatiblity of gcc's required automake and modern Perl) 2018-10-31 20:46:17 +00:00
goarch.sh
godeps.sh
gotool-packages.txt
libgo-packages.txt
libgo.imp
LICENSE
Makefile.am re PR bootstrap/82856 (--enable-maintainter-mode broken by incompatiblity of gcc's required automake and modern Perl) 2018-10-31 20:46:17 +00:00
Makefile.in re PR bootstrap/82856 (--enable-maintainter-mode broken by incompatiblity of gcc's required automake and modern Perl) 2018-10-31 20:46:17 +00:00
match.sh
MERGE
merge.sh
mkrsysinfo.sh
mkruntimeinc.sh
mksigtab.sh
mksysinfo.sh syscall: always define WEXITED and WNOWAIT on GNU/Linux 2018-11-26 23:58:34 +00:00
mvifdiff.sh
PATENTS
README
README.gcc
sysinfo.c
VERSION

See ../README.

This is the runtime support library for the Go programming language.
This library is intended for use with the Go frontend.

This library should not be stripped when it is installed.  Go code
relies on being able to look up file/line information, which comes
from the debugging info using the libbacktrace library.

The library has only been tested on GNU/Linux using glibc, and on
Solaris.  It should not be difficult to port to other operating
systems.

Directories:

go
  A copy of the Go library from http://golang.org/, with several
  changes for gccgo.

runtime
  Runtime functions, written in C, which are called directly by the
  compiler or by the library.

Contributing
============

To contribute patches to the files in this directory, please see
http://golang.org/doc/gccgo_contribute.html .

The master copy of these files is hosted at
http://code.google.com/p/gofrontend .  Changes to these files require
signing a Google contributor license agreement.  If you are the
copyright holder, you will need to agree to the individual contributor
license agreement at
http://code.google.com/legal/individual-cla-v1.0.html.  This agreement
can be completed online.

If your organization is the copyright holder, the organization will
need to agree to the corporate contributor license agreement at
http://code.google.com/legal/corporate-cla-v1.0.html.

If the copyright holder for your code has already completed the
agreement in connection with another Google open source project, it
does not need to be completed again.