code related to Squid Instance and PID file management
Functions | |
| void | ThrowIfAlreadyRunning () |
| void | WriteOurPid () |
| creates a PID file; throws on error More... | |
| pid_t | Other () |
Function Documentation
◆ Other()
| pid_t Instance::Other | ( | ) |
- Returns
- another Squid instance PID Throws if PID file maintenance is disabled.
Definition at line 127 of file Instance.cc.
References GetOtherPid(), PidFilename(), FileOpeningConfig::ReadOnly(), and TexcHere.
Referenced by sendSignal().
◆ ThrowIfAlreadyRunning()
| void Instance::ThrowIfAlreadyRunning | ( | ) |
Usually throws if another Squid instance is running. False positives are highly unlikely, but the caller must tolerate false negatives well: We may not detect another running instance and, hence, may not throw. Does nothing if PID file maintenance is disabled.
Definition at line 138 of file Instance.cc.
References debugs, File::Optional(), PidFilename(), FileOpeningConfig::ReadOnly(), and ThrowIfAlreadyRunningWith().
Referenced by SquidMain().
◆ WriteOurPid()
| void Instance::WriteOurPid | ( | ) |
Creates or updates the PID file for the current process. Does nothing if PID file maintenance is disabled.
Definition at line 177 of file Instance.cc.
References DBG_IMPORTANT, debugs, Must, PidFilename(), SBuf::Printf(), FileOpeningConfig::ReadWrite(), RemoveInstance(), File::synchronize(), ThrowIfAlreadyRunningWith(), File::truncate(), and File::writeAll().
Referenced by SquidMain(), and watch_child().