Mercurial > hg > graal-compiler
annotate agent/src/os/win32/IOBuf.cpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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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 <stdio.h> | |
| 26 | |
| 27 // This file is currently used for os/solaris/agent too. At some point in time | |
| 28 // the source will be reorganized to avoid these ifdefs. | |
| 29 | |
| 30 #ifdef __sun | |
| 31 #include <string.h> | |
| 32 #include <inttypes.h> | |
| 33 #include <sys/byteorder.h> | |
| 34 #endif | |
| 35 | |
| 36 #include "IOBuf.hpp" | |
| 37 | |
| 38 // Formats for printing pointers | |
| 39 #ifdef _LP64 | |
| 40 # define INTPTR_FORMAT "0x%016lx" | |
| 41 #else /* ! _LP64 */ | |
| 42 # define INTPTR_FORMAT "0x%08lx" | |
| 43 #endif /* _LP64 */ | |
| 44 | |
| 45 // Uncomment the #define below to get messages on stderr | |
| 46 // #define DEBUGGING | |
| 47 | |
| 48 IOBuf::IOBuf(int inLen, int outLen) { | |
| 49 inBuf = new Buffer(inLen); | |
| 50 outBuf = new Buffer(outLen); | |
| 51 fd = INVALID_SOCKET; | |
| 52 outHandle = NULL; | |
| 53 usingSocket = true; | |
| 54 reset(); | |
| 55 } | |
| 56 | |
| 57 IOBuf::~IOBuf() { | |
| 58 delete inBuf; | |
| 59 delete outBuf; | |
| 60 } | |
| 61 | |
| 62 void | |
| 63 IOBuf::setSocket(SOCKET sock) { | |
| 64 fd = sock; | |
| 65 usingSocket = true; | |
| 66 } | |
| 67 | |
| 68 // Reading/writing files is only needed and used on windows. | |
| 69 #ifdef WIN32 | |
| 70 void | |
| 71 IOBuf::setOutputFileHandle(HANDLE handle) { | |
| 72 outHandle = handle; | |
| 73 usingSocket = false; | |
| 74 } | |
| 75 #endif | |
| 76 | |
| 77 void | |
| 78 IOBuf::reset() { | |
| 79 gotDataLastTime = false; | |
| 80 state = TEXT_STATE; | |
| 81 binPos = 0; | |
| 82 binLength = 0; | |
| 83 } | |
| 84 | |
| 85 IOBuf::ReadLineResult | |
| 86 IOBuf::tryReadLine() { | |
| 87 return doReadLine(false); | |
| 88 } | |
| 89 | |
| 90 char* | |
| 91 IOBuf::readLine() { | |
| 92 ReadLineResult rr = doReadLine(true); | |
| 93 if (rr != RL_GOT_DATA) { | |
| 94 return NULL; | |
| 95 } | |
| 96 return getLine(); | |
| 97 } | |
| 98 | |
| 99 IOBuf::ReadLineResult | |
| 100 IOBuf::doReadLine(bool shouldWait) { | |
| 101 | |
| 102 if (!usingSocket) { | |
| 103 return IOBuf::RL_ERROR; | |
| 104 } | |
| 105 | |
| 106 if (gotDataLastTime) { | |
| 107 curLine.clear(); | |
| 108 } | |
| 109 | |
| 110 int c; | |
| 111 do { | |
| 112 c = readChar(shouldWait); | |
| 113 if (c >= 0) { | |
| 114 Action act = processChar((char) c); | |
| 115 if (act == GOT_LINE) { | |
| 116 curLine.push_back('\0'); | |
| 117 gotDataLastTime = true; | |
| 118 return IOBuf::RL_GOT_DATA; | |
| 119 } else if (act == SKIP_EOL_CHAR) { | |
| 120 // Do nothing | |
| 121 } else { | |
| 122 curLine.push_back((char) c); | |
| 123 } | |
| 124 } | |
| 125 } while (shouldWait || c >= 0); | |
| 126 | |
| 127 gotDataLastTime = false; | |
| 128 return IOBuf::RL_NO_DATA; | |
| 129 } | |
| 130 | |
| 131 bool | |
| 132 IOBuf::flushImpl(bool moreDataToCome) { | |
| 133 int numWritten = 0; | |
| 134 | |
| 135 #ifdef WIN32 | |
| 136 // When running on Windows and using IOBufs for inter-process | |
| 137 // communication, we need to write metadata into the stream | |
| 138 // indicating how many bytes are coming down. Five bytes are written | |
| 139 // per flush() call, four containing the integer number of bytes | |
| 140 // coming (not including the five-byte header) and one (a 0 or 1) | |
| 141 // indicating whether there is more data coming. | |
| 142 if (!usingSocket) { | |
| 143 int numToWrite = outBuf->drainRemaining(); | |
| 144 char moreToCome = (moreDataToCome ? 1 : 0); | |
| 145 DWORD numBytesWritten; | |
| 146 if (!WriteFile(outHandle, &numToWrite, sizeof(int), &numBytesWritten, NULL)) { | |
| 147 return false; | |
| 148 } | |
| 149 if (numBytesWritten != sizeof(int)) { | |
| 150 return false; | |
| 151 } | |
| 152 if (!WriteFile(outHandle, &moreToCome, 1, &numBytesWritten, NULL)) { | |
| 153 return false; | |
| 154 } | |
| 155 if (numBytesWritten != 1) { | |
| 156 return false; | |
| 157 } | |
| 158 } | |
| 159 #endif | |
| 160 | |
| 161 while (outBuf->drainRemaining() != 0) { | |
| 162 #ifdef DEBUGGING | |
| 163 fprintf(stderr, "Flushing %d bytes\n", outBuf->drainRemaining()); | |
| 164 #endif | |
| 165 if (usingSocket) { | |
| 166 numWritten = send(fd, outBuf->drainPos(), outBuf->drainRemaining(), 0); | |
| 167 } else { | |
| 168 #ifdef WIN32 | |
| 169 DWORD numBytesWritten; | |
| 170 if (!WriteFile(outHandle, outBuf->drainPos(), outBuf->drainRemaining(), &numBytesWritten, NULL)) { | |
| 171 numWritten = -1; | |
| 172 } else { | |
| 173 numWritten = numBytesWritten; | |
| 174 } | |
| 175 #endif | |
| 176 } | |
| 177 if (numWritten != -1) { | |
| 178 #ifdef DEBUGGING | |
| 179 fprintf(stderr, "Flushed %d bytes\n", numWritten); | |
| 180 #endif | |
| 181 outBuf->incrDrainPos(numWritten); | |
| 182 } else { | |
| 183 return false; | |
| 184 } | |
| 185 } | |
| 186 | |
| 187 outBuf->compact(); | |
| 188 | |
| 189 return true; | |
| 190 } | |
| 191 | |
| 192 int | |
| 193 IOBuf::readChar(bool block) { | |
| 194 do { | |
| 195 int c = inBuf->readByte(); | |
| 196 if (c >= 0) { | |
| 197 return c; | |
| 198 } | |
| 199 // See whether we need to compact the input buffer | |
| 200 if (inBuf->remaining() < inBuf->size() / 2) { | |
| 201 inBuf->compact(); | |
| 202 } | |
| 203 // See whether socket is ready | |
| 204 fd_set fds; | |
| 205 FD_ZERO(&fds); | |
| 206 FD_SET(fd, &fds); | |
| 207 struct timeval timeout; | |
| 208 timeout.tv_sec = 0; | |
| 209 timeout.tv_usec = 0; | |
| 210 if (block || select(1 + fd, &fds, NULL, NULL, &timeout) > 0) { | |
| 211 if (block || FD_ISSET(fd, &fds)) { | |
| 212 #ifdef DEBUGGING | |
| 213 int b = (block ? 1 : 0); | |
| 214 fprintf(stderr, "calling recv: block = %d\n", b); | |
| 215 #endif | |
| 216 // Read data from socket | |
| 217 int numRead = recv(fd, inBuf->fillPos(), inBuf->remaining(), 0); | |
| 218 if (numRead < 0) { | |
| 219 #ifdef DEBUGGING | |
| 220 fprintf(stderr, "recv failed\n"); | |
| 221 #endif | |
| 222 return -1; | |
| 223 } | |
| 224 inBuf->incrFillPos(numRead); | |
| 225 } | |
| 226 } | |
| 227 } while (block); | |
| 228 | |
| 229 return inBuf->readByte(); | |
| 230 } | |
| 231 | |
| 232 char* | |
| 233 IOBuf::getLine() { | |
| 234 #ifdef DEBUGGING | |
| 235 fprintf(stderr, "Returning (first 10 chars) \"%.10s\"\n", curLine.begin()); | |
| 236 #endif | |
| 237 return curLine.begin(); | |
| 238 } | |
| 239 | |
| 240 bool | |
| 241 IOBuf::flush() { | |
| 242 return flushImpl(false); | |
| 243 } | |
| 244 | |
| 245 bool | |
| 246 IOBuf::writeString(const char* str) { | |
| 247 int len = strlen(str); | |
| 248 | |
| 249 if (len > outBuf->size()) { | |
| 250 return false; | |
| 251 } | |
| 252 | |
| 253 if (len > outBuf->remaining()) { | |
| 254 if (!flushImpl(true)) { | |
| 255 return false; | |
| 256 } | |
| 257 } | |
| 258 | |
| 259 // NOTE we do not copy the null terminator of the string. | |
| 260 | |
| 261 strncpy(outBuf->fillPos(), str, len); | |
| 262 outBuf->incrFillPos(len); | |
| 263 return true; | |
| 264 } | |
| 265 | |
| 266 bool | |
| 267 IOBuf::writeInt(int val) { | |
| 268 char buf[128]; | |
| 269 sprintf(buf, "%d", val); | |
| 270 return writeString(buf); | |
| 271 } | |
| 272 | |
| 273 bool | |
| 274 IOBuf::writeUnsignedInt(unsigned int val) { | |
| 275 char buf[128]; | |
| 276 sprintf(buf, "%u", val); | |
| 277 return writeString(buf); | |
| 278 } | |
| 279 | |
| 280 bool | |
| 281 IOBuf::writeBoolAsInt(bool val) { | |
| 282 if (val) { | |
| 283 return writeString("1"); | |
| 284 } else { | |
| 285 return writeString("0"); | |
| 286 } | |
| 287 } | |
| 288 | |
| 289 bool | |
| 290 IOBuf::writeAddress(void* val) { | |
| 291 char buf[128]; | |
| 292 sprintf(buf, INTPTR_FORMAT, val); | |
| 293 return writeString(buf); | |
| 294 } | |
| 295 | |
| 296 bool | |
| 297 IOBuf::writeSpace() { | |
| 298 return writeString(" "); | |
| 299 } | |
| 300 | |
| 301 bool | |
| 302 IOBuf::writeEOL() { | |
| 303 return writeString("\n\r"); | |
| 304 } | |
| 305 | |
| 306 bool | |
| 307 IOBuf::writeBinChar(char c) { | |
| 308 return writeBinBuf((char*) &c, sizeof(c)); | |
| 309 } | |
| 310 | |
| 311 bool | |
| 312 IOBuf::writeBinUnsignedShort(unsigned short i) { | |
| 313 i = htons(i); | |
| 314 return writeBinBuf((char*) &i, sizeof(i)); | |
| 315 } | |
| 316 | |
| 317 bool | |
| 318 IOBuf::writeBinUnsignedInt(unsigned int i) { | |
| 319 i = htonl(i); | |
| 320 return writeBinBuf((char*) &i, sizeof(i)); | |
| 321 } | |
| 322 | |
| 323 bool | |
| 324 IOBuf::writeBinBuf(char* buf, int size) { | |
| 325 while (size > 0) { | |
| 326 int spaceRemaining = outBuf->remaining(); | |
| 327 if (spaceRemaining == 0) { | |
| 328 if (!flushImpl(true)) { | |
| 329 return false; | |
| 330 } | |
| 331 spaceRemaining = outBuf->remaining(); | |
| 332 } | |
| 333 int toCopy = (size > spaceRemaining) ? spaceRemaining : size; | |
| 334 memcpy(outBuf->fillPos(), buf, toCopy); | |
| 335 outBuf->incrFillPos(toCopy); | |
| 336 buf += toCopy; | |
| 337 size -= toCopy; | |
| 338 if (size > 0) { | |
| 339 if (!flushImpl(true)) { | |
| 340 return false; | |
| 341 } | |
| 342 } | |
| 343 } | |
| 344 return true; | |
| 345 } | |
| 346 | |
| 347 #ifdef WIN32 | |
| 348 IOBuf::FillState | |
| 349 IOBuf::fillFromFileHandle(HANDLE fh, DWORD* numBytesRead) { | |
| 350 int totalToRead; | |
| 351 char moreToCome; | |
| 352 | |
| 353 outBuf->compact(); | |
| 354 | |
| 355 DWORD numRead; | |
| 356 if (!ReadFile(fh, &totalToRead, sizeof(int), &numRead, NULL)) { | |
| 357 return FAILED; | |
| 358 } | |
| 359 if (numRead != sizeof(int)) { | |
| 360 return FAILED; | |
| 361 } | |
| 362 if (!ReadFile(fh, &moreToCome, 1, &numRead, NULL)) { | |
| 363 return FAILED; | |
| 364 } | |
| 365 if (numRead != 1) { | |
| 366 return FAILED; | |
| 367 } | |
| 368 if (outBuf->remaining() < totalToRead) { | |
| 369 return FAILED; | |
| 370 } | |
| 371 | |
| 372 int tmp = totalToRead; | |
| 373 | |
| 374 while (totalToRead > 0) { | |
| 375 if (!ReadFile(fh, outBuf->fillPos(), totalToRead, &numRead, NULL)) { | |
| 376 return FAILED; | |
| 377 } | |
| 378 outBuf->incrFillPos((int) numRead); | |
| 379 totalToRead -= numRead; | |
| 380 } | |
| 381 | |
| 382 *numBytesRead = tmp; | |
| 383 return ((moreToCome == 0) ? DONE : MORE_DATA_PENDING); | |
| 384 } | |
| 385 #endif | |
| 386 | |
| 387 bool | |
| 388 IOBuf::isBinEscapeChar(char c) { | |
| 389 return (c == '|'); | |
| 390 } | |
| 391 | |
| 392 IOBuf::Action | |
| 393 IOBuf::processChar(char c) { | |
| 394 Action action = NO_ACTION; | |
| 395 switch (state) { | |
| 396 case TEXT_STATE: { | |
| 397 // Looking for text char, bin escape char, or EOL | |
| 398 if (isBinEscapeChar(c)) { | |
| 399 #ifdef DEBUGGING | |
| 400 fprintf(stderr, "[a: '%c'] ", inBuf[0]); | |
| 401 #endif | |
| 402 binPos = 0; | |
| 403 #ifdef DEBUGGING | |
| 404 fprintf(stderr, "[b: '%c'] ", inBuf[0]); | |
| 405 #endif | |
| 406 binLength = 0; | |
| 407 #ifdef DEBUGGING | |
| 408 fprintf(stderr, "[c: '%c'] ", inBuf[0]); | |
| 409 #endif | |
| 410 state = BIN_STATE; | |
| 411 #ifdef DEBUGGING | |
| 412 fprintf(stderr, "[d: '%c'] ", inBuf[0]); | |
| 413 #endif | |
| 414 #ifdef DEBUGGING | |
| 415 fprintf(stderr, "\nSwitching to BIN_STATE\n"); | |
| 416 #endif | |
| 417 } else if (isEOL(c)) { | |
| 418 state = EOL_STATE; | |
| 419 action = GOT_LINE; | |
| 420 #ifdef DEBUGGING | |
| 421 fprintf(stderr, "\nSwitching to EOL_STATE (GOT_LINE)\n"); | |
| 422 #endif | |
| 423 } | |
| 424 #ifdef DEBUGGING | |
| 425 else { | |
| 426 fprintf(stderr, "'%c' ", c); | |
| 427 fflush(stderr); | |
| 428 } | |
| 429 #endif | |
| 430 break; | |
| 431 } | |
| 432 | |
| 433 case BIN_STATE: { | |
| 434 // Seeking to finish read of input | |
| 435 if (binPos < 4) { | |
| 436 int cur = c & 0xFF; | |
| 437 binLength <<= 8; | |
| 438 binLength |= cur; | |
| 439 ++binPos; | |
| 440 } else { | |
| 441 #ifdef DEBUGGING | |
| 442 fprintf(stderr, "Reading binary byte %d of %d\n", | |
| 443 binPos - 4, binLength); | |
| 444 #endif | |
| 445 ++binPos; | |
| 446 if (binPos == 4 + binLength) { | |
| 447 state = TEXT_STATE; | |
| 448 #ifdef DEBUGGING | |
| 449 fprintf(stderr, "Switching to TEXT_STATE\n"); | |
| 450 #endif | |
| 451 } | |
| 452 } | |
| 453 break; | |
| 454 } | |
| 455 | |
| 456 case EOL_STATE: { | |
| 457 // More EOL characters just cause us to re-enter this state | |
| 458 if (isEOL(c)) { | |
| 459 action = SKIP_EOL_CHAR; | |
| 460 } else if (isBinEscapeChar(c)) { | |
| 461 binPos = 0; | |
| 462 binLength = 0; | |
| 463 state = BIN_STATE; | |
| 464 } else { | |
| 465 state = TEXT_STATE; | |
| 466 #ifdef DEBUGGING | |
| 467 fprintf(stderr, "'%c' ", c); | |
| 468 fflush(stderr); | |
| 469 #endif | |
| 470 } | |
| 471 break; | |
| 472 } | |
| 473 | |
| 474 } // switch | |
| 475 | |
| 476 return action; | |
| 477 } | |
| 478 | |
| 479 | |
| 480 bool | |
| 481 IOBuf::isEOL(char c) { | |
| 482 #ifdef WIN32 | |
| 483 return ((c == '\n') || (c == '\r')); | |
| 484 #elif defined(__sun) | |
| 485 return c == '\n'; | |
| 486 #else | |
| 487 #error Please port isEOL() to your platform | |
| 488 return false; | |
| 489 #endif | |
| 490 } |