1 /*
2 * Copyright (c) 2001, 2016, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
159 struct dvpoll a;
160 void *pfd = (void *) jlong_to_ptr(address);
161 int result = 0;
162
163 a.dp_fds = pfd;
164 a.dp_nfds = numfds;
165 a.dp_timeout = (int)timeout;
166
167 if (timeout <= 0) { /* Indefinite or no wait */
168 RESTARTABLE (ioctl(wfd, DP_POLL, &a), result);
169 } else { /* Bounded wait; bounded restarts */
170 result = idevpoll(wfd, DP_POLL, a);
171 }
172
173 if (result < 0) {
174 JNU_ThrowIOExceptionWithLastError(env, "Error reading driver");
175 return -1;
176 }
177 return result;
178 }
179
180 JNIEXPORT void JNICALL
181 Java_sun_nio_ch_DevPollArrayWrapper_interrupt(JNIEnv *env, jclass this, jint fd)
182 {
183 int fakebuf[1];
184 fakebuf[0] = 1;
185 if (write(fd, fakebuf, 1) < 0) {
186 JNU_ThrowIOExceptionWithLastError(env,
187 "Write to interrupt fd failed");
188 }
189 }
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1 /*
2 * Copyright (c) 2001, 2018, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
159 struct dvpoll a;
160 void *pfd = (void *) jlong_to_ptr(address);
161 int result = 0;
162
163 a.dp_fds = pfd;
164 a.dp_nfds = numfds;
165 a.dp_timeout = (int)timeout;
166
167 if (timeout <= 0) { /* Indefinite or no wait */
168 RESTARTABLE (ioctl(wfd, DP_POLL, &a), result);
169 } else { /* Bounded wait; bounded restarts */
170 result = idevpoll(wfd, DP_POLL, a);
171 }
172
173 if (result < 0) {
174 JNU_ThrowIOExceptionWithLastError(env, "Error reading driver");
175 return -1;
176 }
177 return result;
178 }
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