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9583e3657e
Co-authored-by: Ron Pressler <rpressler@openjdk.org> Co-authored-by: Alan Bateman <alanb@openjdk.org> Co-authored-by: Erik Österlund <eosterlund@openjdk.org> Co-authored-by: Andrew Haley <aph@openjdk.org> Co-authored-by: Rickard Bäckman <rbackman@openjdk.org> Co-authored-by: Markus Grönlund <mgronlun@openjdk.org> Co-authored-by: Leonid Mesnik <lmesnik@openjdk.org> Co-authored-by: Serguei Spitsyn <sspitsyn@openjdk.org> Co-authored-by: Chris Plummer <cjplummer@openjdk.org> Co-authored-by: Coleen Phillimore <coleenp@openjdk.org> Co-authored-by: Robbin Ehn <rehn@openjdk.org> Co-authored-by: Stefan Karlsson <stefank@openjdk.org> Co-authored-by: Thomas Schatzl <tschatzl@openjdk.org> Co-authored-by: Sergey Kuksenko <skuksenko@openjdk.org> Reviewed-by: lancea, eosterlund, rehn, sspitsyn, stefank, tschatzl, dfuchs, lmesnik, dcubed, kevinw, amenkov, dlong, mchung, psandoz, bpb, coleenp, smarks, egahlin, mseledtsov, coffeys, darcy
92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
/*
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* Copyright (c) 2002, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include "jni.h"
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#include "jni_util.h"
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#include "jvm.h"
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#include "jlong.h"
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#include "sun_nio_ch_NativeThread.h"
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#include "nio_util.h"
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#include <signal.h>
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#include <pthread.h>
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#ifdef __linux__
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/* Also defined in net/linux_close.c */
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#define INTERRUPT_SIGNAL (SIGRTMAX - 2)
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#elif defined(_AIX)
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/* Also defined in net/aix_close.c */
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#define INTERRUPT_SIGNAL (SIGRTMAX - 1)
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#elif defined(_ALLBSD_SOURCE)
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/* Also defined in net/bsd_close.c */
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#define INTERRUPT_SIGNAL SIGIO
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#else
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#error "missing platform-specific definition here"
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#endif
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static void
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nullHandler(int sig)
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{
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}
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JNIEXPORT void JNICALL
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Java_sun_nio_ch_NativeThread_init(JNIEnv *env, jclass cl)
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{
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/* Install the null handler for INTERRUPT_SIGNAL. This might overwrite the
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* handler previously installed by <platform>_close.c, but that's okay
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* since neither handler actually does anything. We install our own
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* handler here simply out of paranoia; ultimately the two mechanisms
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* should somehow be unified, perhaps within the VM.
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*/
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sigset_t ss;
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struct sigaction sa, osa;
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sa.sa_handler = nullHandler;
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sa.sa_flags = 0;
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sigemptyset(&sa.sa_mask);
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if (sigaction(INTERRUPT_SIGNAL, &sa, &osa) < 0)
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JNU_ThrowIOExceptionWithLastError(env, "sigaction");
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}
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JNIEXPORT jlong JNICALL
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Java_sun_nio_ch_NativeThread_current0(JNIEnv *env, jclass cl)
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{
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return (jlong)pthread_self();
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}
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JNIEXPORT void JNICALL
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Java_sun_nio_ch_NativeThread_signal0(JNIEnv *env, jclass cl, jlong thread)
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{
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int ret;
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ret = pthread_kill((pthread_t)thread, INTERRUPT_SIGNAL);
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#ifdef MACOSX
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if (ret != 0 && ret != ESRCH)
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#else
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if (ret != 0)
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#endif
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JNU_ThrowIOExceptionWithLastError(env, "Thread signal failed");
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}
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