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f6be1179bb
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
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| .. | ||
| config | ||
| go | ||
| misc/cgo | ||
| runtime | ||
| testsuite | ||
| aclocal.m4 | ||
| check-packages.txt | ||
| config.h.in | ||
| configure | ||
| configure.ac | ||
| goarch.sh | ||
| godeps.sh | ||
| gotool-packages.txt | ||
| libgo-packages.txt | ||
| libgo.imp | ||
| LICENSE | ||
| Makefile.am | ||
| Makefile.in | ||
| match.sh | ||
| MERGE | ||
| merge.sh | ||
| mkrsysinfo.sh | ||
| mkruntimeinc.sh | ||
| mksigtab.sh | ||
| mksysinfo.sh | ||
| 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.