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