Mercurial > projects > ddmd
annotate dmd/OutBuffer.d @ 5:63623152e82a
Fixed memory corruption bug which was introduced when attempting to restore GC functionality
| author | dkoroskin <> |
|---|---|
| date | Tue, 08 Dec 2009 21:39:17 +0300 |
| parents | d706d958e4e8 |
| children | 832f71e6f96c |
| rev | line source |
|---|---|
| 0 | 1 module dmd.OutBuffer; |
| 2 | |
| 3 import std.stdarg; | |
| 4 import std.contracts; | |
| 5 | |
| 6 import core.stdc.stdlib; | |
| 7 import core.stdc.string; | |
| 8 | |
| 4 | 9 import core.memory; |
|
5
63623152e82a
Fixed memory corruption bug which was introduced when attempting to restore GC functionality
dkoroskin <>
parents:
4
diff
changeset
|
10 import core.stdc.stdlib; |
| 2 | 11 |
| 0 | 12 class OutBuffer |
| 13 { | |
| 14 ubyte* data; | |
| 15 uint offset; | |
| 16 uint size; | |
| 17 | |
| 18 this() | |
| 19 { | |
| 20 // do nothing | |
| 21 } | |
| 22 | |
| 23 final void* extractData() | |
| 24 { | |
| 25 void* p = cast(void*)data; | |
| 26 | |
| 27 data = null; | |
| 28 offset = 0; | |
| 29 size = 0; | |
| 30 | |
| 31 return p; | |
| 32 } | |
| 33 | |
| 34 void mark() | |
| 35 { | |
| 36 assert(false); | |
| 37 } | |
| 38 | |
| 39 final void reserve(uint nbytes) | |
| 40 { | |
| 41 //printf("OutBuffer::reserve: size = %d, offset = %d, nbytes = %d\n", size, offset, nbytes); | |
| 42 if (size - offset < nbytes) | |
| 43 { | |
| 44 size = (offset + nbytes) * 2; | |
|
5
63623152e82a
Fixed memory corruption bug which was introduced when attempting to restore GC functionality
dkoroskin <>
parents:
4
diff
changeset
|
45 data = cast(ubyte*)realloc(data, size); |
| 0 | 46 } |
| 47 } | |
| 48 | |
| 49 final void setsize(uint size) | |
| 50 { | |
| 51 assert(false); | |
| 52 } | |
| 53 | |
| 54 final void reset() | |
| 55 { | |
| 56 offset = 0; | |
| 57 } | |
| 58 | |
| 59 final void write(const(void)* data, uint nbytes) | |
| 60 { | |
| 61 reserve(nbytes); | |
| 62 memcpy(this.data + offset, data, nbytes); | |
| 63 offset += nbytes; | |
| 64 } | |
| 65 | |
| 66 final void writebstring(ubyte* string_) | |
| 67 { | |
| 68 assert(false); | |
| 69 } | |
| 70 | |
| 71 final void writestring(const(char)[] string_) | |
| 72 { | |
| 73 write(string_.ptr , string_.length); | |
| 74 } | |
| 75 | |
| 76 final void writedstring(const(char)* string_) | |
| 77 { | |
| 78 assert(false); | |
| 79 } | |
| 80 | |
| 81 final void writedstring(const(wchar)* string_) | |
| 82 { | |
| 83 assert(false); | |
| 84 } | |
| 85 | |
| 86 final void prependstring(const(char)[] string_) | |
| 87 { | |
| 88 uint len = string_.length; | |
| 89 reserve(len); | |
| 90 memmove(data + len, data, offset); | |
| 91 memcpy(data, string_.ptr, len); | |
| 92 offset += len; | |
| 93 } | |
| 94 | |
| 95 final void writenl() // write newline | |
| 96 { | |
| 97 assert(false); | |
| 98 } | |
| 99 | |
| 100 final void writeByte(uint b) | |
| 101 { | |
| 102 reserve(1); | |
| 103 this.data[offset] = cast(ubyte)b; | |
| 104 offset++; | |
| 105 } | |
| 106 | |
| 107 final void writebyte(uint b) { writeByte(b); } | |
| 108 | |
| 109 final void writeUTF8(uint b) | |
| 110 { | |
| 111 reserve(6); | |
| 112 if (b <= 0x7F) | |
| 113 { | |
| 114 this.data[offset] = cast(ubyte)b; | |
| 115 offset++; | |
| 116 } | |
| 117 else if (b <= 0x7FF) | |
| 118 { | |
| 119 this.data[offset + 0] = cast(ubyte)((b >> 6) | 0xC0); | |
| 120 this.data[offset + 1] = cast(ubyte)((b & 0x3F) | 0x80); | |
| 121 offset += 2; | |
| 122 } | |
| 123 else if (b <= 0xFFFF) | |
| 124 { | |
| 125 this.data[offset + 0] = cast(ubyte)((b >> 12) | 0xE0); | |
| 126 this.data[offset + 1] = cast(ubyte)(((b >> 6) & 0x3F) | 0x80); | |
| 127 this.data[offset + 2] = cast(ubyte)((b & 0x3F) | 0x80); | |
| 128 offset += 3; | |
| 129 } | |
| 130 else if (b <= 0x1FFFFF) | |
| 131 { | |
| 132 this.data[offset + 0] = cast(ubyte)((b >> 18) | 0xF0); | |
| 133 this.data[offset + 1] = cast(ubyte)(((b >> 12) & 0x3F) | 0x80); | |
| 134 this.data[offset + 2] = cast(ubyte)(((b >> 6) & 0x3F) | 0x80); | |
| 135 this.data[offset + 3] = cast(ubyte)((b & 0x3F) | 0x80); | |
| 136 offset += 4; | |
| 137 } | |
| 138 else if (b <= 0x3FFFFFF) | |
| 139 { | |
| 140 this.data[offset + 0] = cast(ubyte)((b >> 24) | 0xF8); | |
| 141 this.data[offset + 1] = cast(ubyte)(((b >> 18) & 0x3F) | 0x80); | |
| 142 this.data[offset + 2] = cast(ubyte)(((b >> 12) & 0x3F) | 0x80); | |
| 143 this.data[offset + 3] = cast(ubyte)(((b >> 6) & 0x3F) | 0x80); | |
| 144 this.data[offset + 4] = cast(ubyte)((b & 0x3F) | 0x80); | |
| 145 offset += 5; | |
| 146 } | |
| 147 else if (b <= 0x7FFFFFFF) | |
| 148 { | |
| 149 this.data[offset + 0] = cast(ubyte)((b >> 30) | 0xFC); | |
| 150 this.data[offset + 1] = cast(ubyte)(((b >> 24) & 0x3F) | 0x80); | |
| 151 this.data[offset + 2] = cast(ubyte)(((b >> 18) & 0x3F) | 0x80); | |
| 152 this.data[offset + 3] = cast(ubyte)(((b >> 12) & 0x3F) | 0x80); | |
| 153 this.data[offset + 4] = cast(ubyte)(((b >> 6) & 0x3F) | 0x80); | |
| 154 this.data[offset + 5] = cast(ubyte)((b & 0x3F) | 0x80); | |
| 155 offset += 6; | |
| 156 } | |
| 157 else | |
| 158 assert(0); | |
| 159 } | |
| 160 | |
| 161 final void writedchar(uint b) | |
| 162 { | |
| 163 assert(false); | |
| 164 } | |
| 165 | |
| 166 final void prependbyte(uint b) | |
| 167 { | |
| 168 assert(false); | |
| 169 } | |
| 170 | |
| 171 final void writeword(uint w) | |
| 172 { | |
| 173 reserve(2); | |
| 174 *cast(ushort*)(this.data + offset) = cast(ushort)w; | |
| 175 offset += 2; | |
| 176 } | |
| 177 | |
| 178 final void writeUTF16(uint w) | |
| 179 { | |
| 180 reserve(4); | |
| 181 if (w <= 0xFFFF) | |
| 182 { | |
| 183 *cast(ushort*)(this.data + offset) = cast(ushort)w; | |
| 184 offset += 2; | |
| 185 } | |
| 186 else if (w <= 0x10FFFF) | |
| 187 { | |
| 188 *cast(ushort*)(this.data + offset) = cast(ushort)((w >> 10) + 0xD7C0); | |
| 189 *cast(ushort*)(this.data + offset + 2) = cast(ushort)((w & 0x3FF) | 0xDC00); | |
| 190 offset += 4; | |
| 191 } | |
| 192 else | |
| 193 assert(0); | |
| 194 } | |
| 195 | |
| 196 final void write4(uint w) | |
| 197 { | |
| 198 assert(false); | |
| 199 } | |
| 200 | |
| 201 final void write(OutBuffer buf) | |
| 202 { | |
| 203 if (buf) | |
| 204 { | |
| 205 reserve(buf.offset); | |
| 206 memcpy(data + offset, buf.data, buf.offset); | |
| 207 offset += buf.offset; | |
| 208 } | |
| 209 } | |
| 210 | |
| 211 final void write(Object obj) | |
| 212 { | |
| 213 assert(false); | |
| 214 } | |
| 215 | |
| 216 final void fill0(uint nbytes) | |
| 217 { | |
| 218 reserve(nbytes); | |
| 219 memset(data + offset, 0, nbytes); | |
| 220 offset += nbytes; | |
| 221 } | |
| 222 | |
| 223 final void align_(uint size) | |
| 224 { | |
| 225 assert(false); | |
| 226 } | |
| 227 | |
| 228 void vprintf(const(char)* format, va_list args) | |
| 229 { | |
| 230 assert(false); | |
| 231 } | |
| 232 | |
| 233 void printf(T...)(string format, T t) | |
| 234 { | |
| 235 string s = std.string.format(format, t); | |
| 236 writestring(s); | |
| 237 } | |
| 238 | |
| 239 version (M_UNICODE) { | |
| 240 /// void vprintf(const uint short *format, va_list args); | |
| 241 /// void printf(const uint short *format, ...); | |
| 242 } | |
| 243 final void bracket(char left, char right) | |
| 244 { | |
| 245 assert(false); | |
| 246 } | |
| 247 | |
| 248 final uint bracket(uint i, const(char)* left, uint j, const(char)* right) | |
| 249 { | |
| 250 assert(false); | |
| 251 } | |
| 252 | |
| 253 final void spread(uint offset, uint nbytes) | |
| 254 { | |
| 255 assert(false); | |
| 256 } | |
| 257 | |
| 258 final uint insert(uint offset, const(void)* data, uint nbytes) | |
| 259 { | |
| 260 assert(false); | |
| 261 } | |
| 262 | |
| 263 final void remove(uint offset, uint nbytes) | |
| 264 { | |
| 265 assert(false); | |
| 266 } | |
| 267 | |
| 268 string toChars() | |
| 269 { | |
|
5
63623152e82a
Fixed memory corruption bug which was introduced when attempting to restore GC functionality
dkoroskin <>
parents:
4
diff
changeset
|
270 char[] s = getString(); |
|
63623152e82a
Fixed memory corruption bug which was introduced when attempting to restore GC functionality
dkoroskin <>
parents:
4
diff
changeset
|
271 char* copy = cast(char*)malloc(s.length); |
|
63623152e82a
Fixed memory corruption bug which was introduced when attempting to restore GC functionality
dkoroskin <>
parents:
4
diff
changeset
|
272 memcpy(copy, s.ptr, s.length); |
|
63623152e82a
Fixed memory corruption bug which was introduced when attempting to restore GC functionality
dkoroskin <>
parents:
4
diff
changeset
|
273 return assumeUnique(copy[0..s.length]); |
|
63623152e82a
Fixed memory corruption bug which was introduced when attempting to restore GC functionality
dkoroskin <>
parents:
4
diff
changeset
|
274 |
|
63623152e82a
Fixed memory corruption bug which was introduced when attempting to restore GC functionality
dkoroskin <>
parents:
4
diff
changeset
|
275 //return getString().idup; |
| 0 | 276 } |
| 277 | |
| 278 final string extractString() | |
| 279 { | |
| 280 char[] s = getString(); | |
| 281 data = null; | |
| 282 offset = 0; | |
| 283 size = 0; | |
| 284 | |
| 285 return assumeUnique(s); | |
| 286 } | |
| 287 | |
| 288 final char[] getString() | |
| 289 { | |
| 290 char* s = cast(char*)data; | |
| 291 return s[0..offset]; | |
| 292 } | |
| 293 } |