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Functions
void	HandleStartupProcInterrupts (void)

void	StartupProcessMain (void) pg_attribute_noreturn()

void	PreRestoreCommand (void)

void	PostRestoreCommand (void)

bool	IsPromoteTriggered (void)

void	ResetPromoteTriggered (void)

Function Documentation

◆ HandleStartupProcInterrupts()

void HandleStartupProcInterrupts ( void )

Definition at line 148 of file startup.c.

References got_SIGHUP, IsUnderPostmaster, PGC_SIGHUP, PostmasterIsAlive(), proc_exit(), ProcessConfigFile(), and shutdown_requested.

Referenced by recoveryApplyDelay(), recoveryPausesHere(), ShutdownWalRcv(), StartupXLOG(), and WaitForWALToBecomeAvailable().

 {
     /*
      * Check if we were requested to re-read config file.
      */
     if (got_SIGHUP)
     {
         got_SIGHUP = false;
         ProcessConfigFile(PGC_SIGHUP);
     }
 
     /*
      * Check if we were requested to exit without finishing recovery.
      */
     if (shutdown_requested)
         proc_exit(1);
 
     /*
      * Emergency bailout if postmaster has died.  This is to avoid the
      * necessity for manual cleanup of all postmaster children.
      */
     if (IsUnderPostmaster && !PostmasterIsAlive())
         exit(1);
 }

◆ IsPromoteTriggered()

bool IsPromoteTriggered ( void )

Definition at line 247 of file startup.c.

References promote_triggered.

Referenced by CheckForStandbyTrigger().

 {
     return promote_triggered;
 }

◆ PostRestoreCommand()

void PostRestoreCommand ( void )

Definition at line 241 of file startup.c.

References in_restore_command.

Referenced by RestoreArchivedFile().

 {
     in_restore_command = false;
 }

◆ PreRestoreCommand()

void PreRestoreCommand ( void )

Definition at line 227 of file startup.c.

References in_restore_command, proc_exit(), and shutdown_requested.

Referenced by RestoreArchivedFile().

 {
     /*
      * Set in_restore_command to tell the signal handler that we should exit
      * right away on SIGTERM. We know that we're at a safe point to do that.
      * Check if we had already received the signal, so that we don't miss a
      * shutdown request received just before this.
      */
     in_restore_command = true;
     if (shutdown_requested)
         proc_exit(1);
 }

◆ ResetPromoteTriggered()

void ResetPromoteTriggered ( void )

Definition at line 253 of file startup.c.

References promote_triggered.

Referenced by CheckForStandbyTrigger().

 {
     promote_triggered = false;
 }

◆ StartupProcessMain()

void StartupProcessMain ( void )

Definition at line 179 of file startup.c.

References InitializeTimeouts(), PG_SETMASK, pqsignal(), proc_exit(), RegisterTimeout(), SIG_DFL, SIG_IGN, SIGCHLD, SIGCONT, SIGHUP, SIGPIPE, SIGQUIT, SIGTTIN, SIGTTOU, SIGUSR1, SIGUSR2, SIGWINCH, STANDBY_DEADLOCK_TIMEOUT, STANDBY_LOCK_TIMEOUT, STANDBY_TIMEOUT, StandbyDeadLockHandler(), StandbyLockTimeoutHandler(), StandbyTimeoutHandler(), startupproc_quickdie(), StartupProcShutdownHandler(), StartupProcSigHupHandler(), StartupProcSigUsr1Handler(), StartupProcTriggerHandler(), StartupXLOG(), and UnBlockSig.

Referenced by AuxiliaryProcessMain().

 {
     /*
      * Properly accept or ignore signals the postmaster might send us.
      */
     pqsignal(SIGHUP, StartupProcSigHupHandler); /* reload config file */
     pqsignal(SIGINT, SIG_IGN);  /* ignore query cancel */
     pqsignal(SIGTERM, StartupProcShutdownHandler);  /* request shutdown */
     pqsignal(SIGQUIT, startupproc_quickdie);    /* hard crash time */
     InitializeTimeouts();       /* establishes SIGALRM handler */
     pqsignal(SIGPIPE, SIG_IGN);
     pqsignal(SIGUSR1, StartupProcSigUsr1Handler);
     pqsignal(SIGUSR2, StartupProcTriggerHandler);
 
     /*
      * Reset some signals that are accepted by postmaster but not here
      */
     pqsignal(SIGCHLD, SIG_DFL);
     pqsignal(SIGTTIN, SIG_DFL);
     pqsignal(SIGTTOU, SIG_DFL);
     pqsignal(SIGCONT, SIG_DFL);
     pqsignal(SIGWINCH, SIG_DFL);
 
     /*
      * Register timeouts needed for standby mode
      */
     RegisterTimeout(STANDBY_DEADLOCK_TIMEOUT, StandbyDeadLockHandler);
     RegisterTimeout(STANDBY_TIMEOUT, StandbyTimeoutHandler);
     RegisterTimeout(STANDBY_LOCK_TIMEOUT, StandbyLockTimeoutHandler);
 
     /*
      * Unblock signals (they were blocked when the postmaster forked us)
      */
     PG_SETMASK(&UnBlockSig);
 
     /*
      * Do what we came for.
      */
     StartupXLOG();
 
     /*
      * Exit normally. Exit code 0 tells postmaster that we completed recovery
      * successfully.
      */
     proc_exit(0);
 }