1 /* |
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2 * Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 #include <sys/types.h> |
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27 #include <string.h> |
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28 #include "jni.h" |
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29 #include "jni_util.h" |
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30 #include "jvm.h" |
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31 #include "jlong.h" |
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32 #include "sun_nio_ch_NativeThread.h" |
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33 |
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34 #include <pthread.h> |
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35 #include <sys/signal.h> |
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36 |
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37 /* Also defined in src/aix/native/java/net/aix_close.c */ |
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38 #define INTERRUPT_SIGNAL (SIGRTMAX - 1) |
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39 |
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40 static void |
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41 nullHandler(int sig) |
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42 { |
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43 } |
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44 |
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45 |
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46 JNIEXPORT void JNICALL |
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47 Java_sun_nio_ch_NativeThread_init(JNIEnv *env, jclass cl) |
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48 { |
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49 /* Install the null handler for INTERRUPT_SIGNAL. This might overwrite the |
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50 * handler previously installed by java/net/aix_close.c, but that's okay |
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51 * since neither handler actually does anything. We install our own |
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52 * handler here simply out of paranoia; ultimately the two mechanisms |
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53 * should somehow be unified, perhaps within the VM. |
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54 */ |
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55 |
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56 sigset_t ss; |
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57 struct sigaction sa, osa; |
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58 sa.sa_handler = nullHandler; |
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59 sa.sa_flags = 0; |
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60 sigemptyset(&sa.sa_mask); |
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61 if (sigaction(INTERRUPT_SIGNAL, &sa, &osa) < 0) |
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62 JNU_ThrowIOExceptionWithLastError(env, "sigaction"); |
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63 } |
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64 |
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65 JNIEXPORT jlong JNICALL |
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66 Java_sun_nio_ch_NativeThread_current(JNIEnv *env, jclass cl) |
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67 { |
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68 return (long)pthread_self(); |
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69 } |
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70 |
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71 JNIEXPORT void JNICALL |
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72 Java_sun_nio_ch_NativeThread_signal(JNIEnv *env, jclass cl, jlong thread) |
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73 { |
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74 if (pthread_kill((pthread_t)thread, INTERRUPT_SIGNAL)) |
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75 JNU_ThrowIOExceptionWithLastError(env, "Thread signal failed"); |
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76 } |
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