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
sig_handler(int sig,siginfo_t * info,ucontext_t * context)33 void sig_handler(int sig, siginfo_t *info, ucontext_t *context) {
34
35 printf( " HANDLER (1) " );
36 }
37
Java_TestJNI_doSomething(JNIEnv * env,jclass klass,jint val)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
56