Mercurial > hg > truffle
annotate agent/src/os/win32/Buffer.cpp @ 2183:eed52202caea
Added parameter to array store exception runtime call (new in HotSpot).
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
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date | Wed, 16 Feb 2011 15:13:34 +0100 |
parents | c18cbe5936b8 |
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rev | line source |
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0 | 1 /* |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 #include "Buffer.hpp" | |
26 | |
27 #include <string.h> | |
28 | |
29 Buffer::Buffer(int bufSize) { | |
30 buf = new char[bufSize]; | |
31 sz = bufSize; | |
32 fill = 0; | |
33 drain = 0; | |
34 } | |
35 | |
36 Buffer::~Buffer() { | |
37 delete[] buf; | |
38 } | |
39 | |
40 char* | |
41 Buffer::fillPos() { | |
42 return buf + fill; | |
43 } | |
44 | |
45 int | |
46 Buffer::remaining() { | |
47 return sz - fill; | |
48 } | |
49 | |
50 int | |
51 Buffer::size() { | |
52 return sz; | |
53 } | |
54 | |
55 bool | |
56 Buffer::incrFillPos(int amt) { | |
57 if (fill + amt >= sz) { | |
58 return false; | |
59 } | |
60 fill += amt; | |
61 return true; | |
62 } | |
63 | |
64 int | |
65 Buffer::readByte() { | |
66 if (drain < fill) { | |
67 return buf[drain++] & 0xFF; | |
68 } else { | |
69 return -1; | |
70 } | |
71 } | |
72 | |
73 int | |
74 Buffer::readBytes(char* data, int len) { | |
75 int numRead = 0; | |
76 while (numRead < len) { | |
77 int c = readByte(); | |
78 if (c < 0) break; | |
79 data[numRead++] = (char) c; | |
80 } | |
81 return numRead; | |
82 } | |
83 | |
84 char* | |
85 Buffer::drainPos() { | |
86 return buf + drain; | |
87 } | |
88 | |
89 int | |
90 Buffer::drainRemaining() { | |
91 return fill - drain; | |
92 } | |
93 | |
94 bool | |
95 Buffer::incrDrainPos(int amt) { | |
96 if (drainRemaining() < amt) { | |
97 return false; | |
98 } | |
99 drain += amt; | |
100 return true; | |
101 } | |
102 | |
103 void | |
104 Buffer::compact() { | |
105 // Copy down data | |
106 memmove(buf, buf + drain, fill - drain); | |
107 // Adjust positions | |
108 fill -= drain; | |
109 drain = 0; | |
110 } |