Mercurial > hg > truffle
changeset 8067:5cd2fac2ae70
6749267: Signal handler should save/restore errno
Summary: Save errno before processing signal, then restore it.
Reviewed-by: acorn, sspitsyn
| author | hseigel |
|---|---|
| date | Tue, 19 Feb 2013 08:51:56 -0500 |
| parents | b5e3ec9c69fa |
| children | 1048edb5434a |
| files | src/os/bsd/vm/os_bsd.cpp src/os/linux/vm/os_linux.cpp src/os/solaris/vm/os_solaris.cpp |
| diffstat | 3 files changed, 6 insertions(+), 0 deletions(-) [+] |
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--- a/src/os/bsd/vm/os_bsd.cpp Mon Feb 18 12:49:53 2013 +0100 +++ b/src/os/bsd/vm/os_bsd.cpp Tue Feb 19 08:51:56 2013 -0500 @@ -2887,7 +2887,9 @@ void signalHandler(int sig, siginfo_t* info, void* uc) { assert(info != NULL && uc != NULL, "it must be old kernel"); + int orig_errno = errno; // Preserve errno value over signal handler. JVM_handle_bsd_signal(sig, info, uc, true); + errno = orig_errno; }
--- a/src/os/linux/vm/os_linux.cpp Mon Feb 18 12:49:53 2013 +0100 +++ b/src/os/linux/vm/os_linux.cpp Tue Feb 19 08:51:56 2013 -0500 @@ -3653,7 +3653,9 @@ void signalHandler(int sig, siginfo_t* info, void* uc) { assert(info != NULL && uc != NULL, "it must be old kernel"); + int orig_errno = errno; // Preserve errno value over signal handler. JVM_handle_linux_signal(sig, info, uc, true); + errno = orig_errno; }
--- a/src/os/solaris/vm/os_solaris.cpp Mon Feb 18 12:49:53 2013 +0100 +++ b/src/os/solaris/vm/os_solaris.cpp Tue Feb 19 08:51:56 2013 -0500 @@ -4317,7 +4317,9 @@ void signalHandler(int sig, siginfo_t* info, void* ucVoid) { + int orig_errno = errno; // Preserve errno value over signal handler. JVM_handle_solaris_signal(sig, info, ucVoid, true); + errno = orig_errno; } /* Do not delete - if guarantee is ever removed, a signal handler (even empty)