void Debugger::detach(JSGlobalObject* globalObject, ReasonForDetach reason)
{
// If we're detaching from the currently executing global object, manually tear down our
// stack, since we won't get further debugger callbacks to do so. Also, resume execution,
// since there's no point in staying paused once a window closes.
if (m_isPaused && m_currentCallFrame && m_currentCallFrame->vmEntryGlobalObject() == globalObject) {
m_currentCallFrame = nullptr;
m_pauseOnCallFrame = nullptr;
continueProgram();
}
ASSERT(m_globalObjects.contains(globalObject));
m_globalObjects.remove(globalObject);
// If the globalObject is destructing, then its CodeBlocks will also be
// destructed. There is no need to do the debugger requests clean up, and
// it is not safe to access those CodeBlocks at this time anyway.
if (reason != GlobalObjectIsDestructing)
clearDebuggerRequests(globalObject);
globalObject->setDebugger(nullptr);
if (m_globalObjects.isEmpty())
clearParsedData();
}
ErrorCode LogParser::parseLog(int fd, std::string &senderIp,
std::vector<FileChunksInfo> &fileChunksInfo) {
char entry[TransferLogManager::kMaxEntryLength];
// empty log is valid
ErrorCode status = OK;
while (true) {
int16_t entrySize;
int toRead = sizeof(int16_t);
int numRead = ::read(fd, &entrySize, toRead);
if (numRead < 0) {
PLOG(ERROR) << "Error while reading transfer log " << numRead << " "
<< toRead;
return INVALID_LOG;
}
if (numRead == 0) {
VLOG(1) << "got EOF, toRead " << toRead;
break;
}
if (numRead != toRead) {
// extra bytes at the end, most likely part of the previous write
// succeeded partially
if (parseOnly_) {
LOG(INFO) << "Extra " << numRead << " bytes at the end of the log";
} else if (!truncateExtraBytesAtEnd(fd, numRead)) {
return INVALID_LOG;
}
break;
}
if (entrySize <= 0 || entrySize > TransferLogManager::kMaxEntryLength) {
LOG(ERROR) << "Transfer log parse error, invalid entry length "
<< entrySize;
return INVALID_LOG;
}
numRead = ::read(fd, entry, entrySize);
if (numRead < 0) {
PLOG(ERROR) << "Error while reading transfer log " << numRead << " "
<< entrySize;
return INVALID_LOG;
}
if (numRead != entrySize) {
// extra bytes also includes the size entry
int64_t extraBytes = numRead + sizeof(int16_t);
if (parseOnly_) {
LOG(INFO) << "Extra " << extraBytes << " bytes at the end of the log";
} else if (!truncateExtraBytesAtEnd(fd, extraBytes)) {
return INVALID_LOG;
}
break;
}
TransferLogManager::EntryType type =
(TransferLogManager::EntryType)entry[0];
if (status == INCONSISTENT_DIRECTORY &&
type != TransferLogManager::HEADER) {
// If the directory is invalid, no need to process any entry other than
// header, because only a header can validate a directory
continue;
}
switch (type) {
case TransferLogManager::HEADER:
status = processHeaderEntry(entry + 1, entrySize - 1, senderIp);
break;
case TransferLogManager::FILE_CREATION:
status = processFileCreationEntry(entry + 1, entrySize - 1);
break;
case TransferLogManager::BLOCK_WRITE:
status = processBlockWriteEntry(entry + 1, entrySize - 1);
break;
case TransferLogManager::FILE_RESIZE:
status = processFileResizeEntry(entry + 1, entrySize - 1);
break;
case TransferLogManager::FILE_INVALIDATION:
status = processFileInvalidationEntry(entry + 1, entrySize - 1);
break;
case TransferLogManager::DIRECTORY_INVALIDATION:
status = processDirectoryInvalidationEntry(entry + 1, entrySize - 1);
break;
default:
LOG(ERROR) << "Invalid entry type found " << type;
return INVALID_LOG;
}
if (status == INVALID_LOG) {
LOG(ERROR) << "Invalid transfer log";
return status;
}
if (status == INCONSISTENT_DIRECTORY) {
clearParsedData();
}
}
if (status == OK) {
for (auto &pair : fileInfoMap_) {
FileChunksInfo &fileInfo = pair.second;
fileInfo.mergeChunks();
fileChunksInfo.emplace_back(std::move(fileInfo));
}
if (!invalidSeqIds_.empty()) {
if (!writeFileInvalidationEntries(fd, invalidSeqIds_)) {
return INVALID_LOG;
}
}
}
return status;
}