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 __cplusplus 30 extern "C" { 31 #endif 32 33 void sig_handler(int sig, siginfo_t *info, ucontext_t *context) { 34 35 printf( " HANDLER (1) " ); 36 } 37 38 JNIEXPORT void JNICALL Java_TestJNI_doSomething(JNIEnv *env, jclass klass, jint val) { 39 struct sigaction act; 40 struct sigaction oact; 41 42 act.sa_flags = SA_ONSTACK|SA_RESTART|SA_SIGINFO; 43 sigfillset(&act.sa_mask); 44 act.sa_handler = SIG_DFL; 45 act.sa_sigaction = (void (*)())sig_handler; 46 sigaction(0x20+val, &act, &oact); 47 48 printf( " doSomething(%d) " , val); 49 printf( " old handler = %p " , oact.sa_handler); 50 } 51 52 #ifdef __cplusplus 53 } 54 #endif 55