jdk
1/*
2* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
3* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4*
5* This code is free software; you can redistribute it and/or modify it
6* under the terms of the GNU General Public License version 2 only, as
7* published by the Free Software Foundation.
8*
9* This code is distributed in the hope that it will be useful, but WITHOUT
10* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12* version 2 for more details (a copy is included in the LICENSE file that
13* accompanied this code).
14*
15* You should have received a copy of the GNU General Public License version
16* 2 along with this work; if not, write to the Free Software Foundation,
17* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18*
19* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20* or visit www.oracle.com if you need additional information or have any
21* questions.
22*/
23
24#include <stdio.h>25#include <jni.h>26#include <signal.h>27#include <sys/ucontext.h>28
29#ifdef __cplusplus30extern "C" {31#endif32
33void sig_handler(int sig, siginfo_t *info, ucontext_t *context) {34
35printf( " HANDLER (1) " );36}
37
38JNIEXPORT void JNICALL Java_TestJNI_doSomething(JNIEnv *env, jclass klass, jint val) {39struct sigaction act;40struct sigaction oact;41
42act.sa_flags = SA_ONSTACK|SA_RESTART|SA_SIGINFO;43sigfillset(&act.sa_mask);44act.sa_handler = SIG_DFL;45act.sa_sigaction = (void (*)())sig_handler;46sigaction(0x20+val, &act, &oact);47
48printf( " doSomething(%d) " , val);49printf( " old handler = %p " , oact.sa_handler);50}
51
52#ifdef __cplusplus53}
54#endif55
56