Mercurial > hg > truffle
comparison src/os/linux/vm/os_linux.cpp @ 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 | 9fae07c31641 |
| children | 4c1d8002ffb1 |
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| 8066:b5e3ec9c69fa | 8067:5cd2fac2ae70 |
|---|---|
| 3651 JVM_handle_linux_signal(int signo, siginfo_t* siginfo, | 3651 JVM_handle_linux_signal(int signo, siginfo_t* siginfo, |
| 3652 void* ucontext, int abort_if_unrecognized); | 3652 void* ucontext, int abort_if_unrecognized); |
| 3653 | 3653 |
| 3654 void signalHandler(int sig, siginfo_t* info, void* uc) { | 3654 void signalHandler(int sig, siginfo_t* info, void* uc) { |
| 3655 assert(info != NULL && uc != NULL, "it must be old kernel"); | 3655 assert(info != NULL && uc != NULL, "it must be old kernel"); |
| 3656 int orig_errno = errno; // Preserve errno value over signal handler. | |
| 3656 JVM_handle_linux_signal(sig, info, uc, true); | 3657 JVM_handle_linux_signal(sig, info, uc, true); |
| 3658 errno = orig_errno; | |
| 3657 } | 3659 } |
| 3658 | 3660 |
| 3659 | 3661 |
| 3660 // This boolean allows users to forward their own non-matching signals | 3662 // This boolean allows users to forward their own non-matching signals |
| 3661 // to JVM_handle_linux_signal, harmlessly. | 3663 // to JVM_handle_linux_signal, harmlessly. |