1 /*
2 * Copyright (c) 2012, 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. 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
41 * struct kevent {
42 * uintptr_t ident; // identifier for this event, usually the fd
43 * int16_t filter; // filter for event
44 * uint16_t flags; // general flags
45 * uint32_t fflags; // filter-specific flags
46 * intptr_t data; // filter-specific data
47 * void *udata; // opaque user data identifier
48 * };
49 */
50 private static final int SIZEOF_KQUEUEEVENT = keventSize();
51 private static final int OFFSET_IDENT = identOffset();
52 private static final int OFFSET_FILTER = filterOffset();
53 private static final int OFFSET_FLAGS = flagsOffset();
54
55 // filters
56 static final int EVFILT_READ = -1;
57 static final int EVFILT_WRITE = -2;
58
59 // flags
60 static final int EV_ADD = 0x0001;
61 static final int EV_ONESHOT = 0x0010;
62 static final int EV_CLEAR = 0x0020;
63
64 /**
65 * Allocates a poll array to handle up to {@code count} events.
66 */
67 static long allocatePollArray(int count) {
68 return unsafe.allocateMemory(count * SIZEOF_KQUEUEEVENT);
69 }
70
71 /**
72 * Free a poll array
73 */
74 static void freePollArray(long address) {
75 unsafe.freeMemory(address);
76 }
77
78 /**
79 * Returns kevent[i].
80 */
|
1 /*
2 * Copyright (c) 2012, 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
41 * struct kevent {
42 * uintptr_t ident; // identifier for this event, usually the fd
43 * int16_t filter; // filter for event
44 * uint16_t flags; // general flags
45 * uint32_t fflags; // filter-specific flags
46 * intptr_t data; // filter-specific data
47 * void *udata; // opaque user data identifier
48 * };
49 */
50 private static final int SIZEOF_KQUEUEEVENT = keventSize();
51 private static final int OFFSET_IDENT = identOffset();
52 private static final int OFFSET_FILTER = filterOffset();
53 private static final int OFFSET_FLAGS = flagsOffset();
54
55 // filters
56 static final int EVFILT_READ = -1;
57 static final int EVFILT_WRITE = -2;
58
59 // flags
60 static final int EV_ADD = 0x0001;
61 static final int EV_DELETE = 0x0002;
62 static final int EV_ONESHOT = 0x0010;
63 static final int EV_CLEAR = 0x0020;
64
65 /**
66 * Allocates a poll array to handle up to {@code count} events.
67 */
68 static long allocatePollArray(int count) {
69 return unsafe.allocateMemory(count * SIZEOF_KQUEUEEVENT);
70 }
71
72 /**
73 * Free a poll array
74 */
75 static void freePollArray(long address) {
76 unsafe.freeMemory(address);
77 }
78
79 /**
80 * Returns kevent[i].
81 */
|