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comparison src/org/tmatesoft/hg/internal/InflaterDataAccess.java @ 575:8bf184c9d733

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Issue 43: poor performance with InflaterDataAccess. Phase 1: test existing code, fix defects found
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 16 Apr 2013 16:59:59 +0200
parents 2a08466838d3
children 3c4db86e8c1f
comparison
equal deleted inserted replaced
574:88afffd39899 575:8bf184c9d733
82 } 82 }
83 decompressedLength = 0; // guard to avoid endless loop in case length() would get invoked from below. 83 decompressedLength = 0; // guard to avoid endless loop in case length() would get invoked from below.
84 int c = 0; 84 int c = 0;
85 int oldPos = decompressedPos; 85 int oldPos = decompressedPos;
86 byte[] dummy = new byte[buffer.length]; 86 byte[] dummy = new byte[buffer.length];
87 int toRead; 87 try {
88 while ((toRead = super.available()) > 0) { 88 int toRead = -1;
89 if (toRead > buffer.length) { 89 do {
90 toRead = buffer.length;
91 }
92 super.readBytes(buffer, 0, toRead);
93 inflater.setInput(buffer, 0, toRead);
94 try {
95 while (!inflater.needsInput()) { 90 while (!inflater.needsInput()) {
96 c += inflater.inflate(dummy, 0, dummy.length); 91 c += inflater.inflate(dummy, 0, dummy.length);
97 } 92 }
98 } catch (DataFormatException ex) { 93 if (inflater.needsInput() && (toRead = super.available()) > 0) {
99 throw new IOException(ex.toString()); 94 // fill:
100 } 95 if (toRead > buffer.length) {
96 toRead = buffer.length;
97 }
98 super.readBytes(buffer, 0, toRead);
99 inflater.setInput(buffer, 0, toRead);
100 }
101 } while(toRead > 0);
102 } catch (DataFormatException ex) {
103 throw new IOException(ex.toString());
101 } 104 }
102 decompressedLength = c + oldPos; 105 decompressedLength = c + oldPos;
103 reset(); 106 reset();
104 seek(oldPos); 107 seek(oldPos);
105 return decompressedLength; 108 return decompressedLength;