1 /*
2 * Copyright (c) 2003, 2011, 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
85
86 static {
87 // If loading from stand alone build uncomment this.
88 // System.loadLibrary("unpack");
89 java.security.AccessController.doPrivileged(
90 new sun.security.action.LoadLibraryAction("unpack"));
91 initIDs();
92 }
93
94 NativeUnpack(UnpackerImpl p200) {
95 super();
96 _p200 = p200;
97 _props = p200.props;
98 p200._nunp = this;
99 }
100
101 // for JNI callbacks
102 static private Object currentInstance() {
103 UnpackerImpl p200 = (UnpackerImpl) Utils.getTLGlobals();
104 return (p200 == null)? null: p200._nunp;
105 }
106
107 // Callback from the unpacker engine to get more data.
108 private long readInputFn(ByteBuffer pbuf, long minlen) throws IOException {
109 if (in == null) return 0; // nothing is readable
110 long maxlen = pbuf.capacity() - pbuf.position();
111 assert(minlen <= maxlen); // don't talk nonsense
112 long numread = 0;
113 int steps = 0;
114 while (numread < minlen) {
115 steps++;
116 // read available input, up to buf.length or maxlen
117 int readlen = _buf.length;
118 if (readlen > (maxlen - numread))
119 readlen = (int)(maxlen - numread);
120 int nr = in.read(_buf, 0, readlen);
121 if (nr <= 0) break;
122 numread += nr;
123 assert(numread <= maxlen);
124 // %%% get rid of this extra copy by using nio?
|
1 /*
2 * Copyright (c) 2003, 2012, 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
85
86 static {
87 // If loading from stand alone build uncomment this.
88 // System.loadLibrary("unpack");
89 java.security.AccessController.doPrivileged(
90 new sun.security.action.LoadLibraryAction("unpack"));
91 initIDs();
92 }
93
94 NativeUnpack(UnpackerImpl p200) {
95 super();
96 _p200 = p200;
97 _props = p200.props;
98 p200._nunp = this;
99 }
100
101 // for JNI callbacks
102 static private Object currentInstance() {
103 UnpackerImpl p200 = (UnpackerImpl) Utils.getTLGlobals();
104 return (p200 == null)? null: p200._nunp;
105 }
106
107 private synchronized long getUnpackerPtr() {
108 return unpackerPtr;
109 }
110
111 // Callback from the unpacker engine to get more data.
112 private long readInputFn(ByteBuffer pbuf, long minlen) throws IOException {
113 if (in == null) return 0; // nothing is readable
114 long maxlen = pbuf.capacity() - pbuf.position();
115 assert(minlen <= maxlen); // don't talk nonsense
116 long numread = 0;
117 int steps = 0;
118 while (numread < minlen) {
119 steps++;
120 // read available input, up to buf.length or maxlen
121 int readlen = _buf.length;
122 if (readlen > (maxlen - numread))
123 readlen = (int)(maxlen - numread);
124 int nr = in.read(_buf, 0, readlen);
125 if (nr <= 0) break;
126 numread += nr;
127 assert(numread <= maxlen);
128 // %%% get rid of this extra copy by using nio?
|