| 279 | } |
| 280 | |
| 281 | void TraceSvcJrd::readSession(TraceSession& session) |
| 282 | { |
| 283 | if (session.ses_logfile.empty()) |
| 284 | { |
| 285 | m_svc.printf(false, "Can't open trace data log file"); |
| 286 | return; |
| 287 | } |
| 288 | |
| 289 | MemoryPool& pool = *getDefaultMemoryPool(); |
| 290 | AutoPtr<TraceLog> log(FB_NEW_POOL(pool) TraceLog(pool, session.ses_logfile, true)); |
| 291 | |
| 292 | UCHAR buff[1024]; |
| 293 | int flags = session.ses_flags; |
| 294 | while (!m_svc.finished() && checkAliveAndFlags(session.ses_id, flags)) |
| 295 | { |
| 296 | const FB_SIZE_T len = log->read(buff, sizeof(buff)); |
| 297 | if (!len) |
| 298 | { |
| 299 | if (!checkAliveAndFlags(session.ses_id, flags)) |
| 300 | break; |
| 301 | |
| 302 | if (m_svc.svc_detach_sem.tryEnter(0, 250)) |
| 303 | break; |
| 304 | } |
| 305 | else |
| 306 | { |
| 307 | m_svc.putBytes(buff, len); |
| 308 | |
| 309 | const bool logFull = (flags & trs_log_full); |
| 310 | if (logFull && !log->isFull()) |
| 311 | { |
| 312 | // resume session |
| 313 | changeFlags(session.ses_id, 0, trs_log_full); |
| 314 | } |
| 315 | } |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | bool TraceSvcJrd::checkAliveAndFlags(ULONG sesId, int& flags) |
| 320 | { |