auxprocess.c File Reference

#include "postgres.h"
#include <unistd.h>
#include <signal.h>
#include "miscadmin.h"
#include "pgstat.h"
#include "postmaster/auxprocess.h"
#include "storage/condition_variable.h"
#include "storage/ipc.h"
#include "storage/proc.h"
#include "storage/procsignal.h"
#include "utils/memutils.h"
#include "utils/ps_status.h"

Include dependency graph for auxprocess.c:

Go to the source code of this file.

Functions
static void	ShutdownAuxiliaryProcess (int code, Datum arg)
void	AuxiliaryProcessMainCommon (void)

Function Documentation

AuxiliaryProcessMainCommon()

void AuxiliaryProcessMainCommon

(

void

)

Definition at line 39 of file auxprocess.c.

{
    Assert(IsUnderPostmaster);
 
    /* Release postmaster's working memory context */
    if (PostmasterContext)
    {
        MemoryContextDelete(PostmasterContext);
        PostmasterContext = NULL;
    }
 
    init_ps_display(NULL);
 
    Assert(GetProcessingMode() == InitProcessing);
 
    IgnoreSystemIndexes = true;
 
    /*
     * As an auxiliary process, we aren't going to do the full InitPostgres
     * pushups, but there are a couple of things that need to get lit up even
     * in an auxiliary process.
     */
 
    /*
     * Create a PGPROC so we can use LWLocks and access shared memory.
     */
    InitAuxiliaryProcess();
 
    BaseInit();
 
    ProcSignalInit(NULL, 0);
 
    /*
     * Auxiliary processes don't run transactions, but they may need a
     * resource owner anyway to manage buffer pins acquired outside
     * transactions (and, perhaps, other things in future).
     */
    CreateAuxProcessResourceOwner();
 
 
    /* Initialize backend status information */
    pgstat_beinit();
    pgstat_bestart_initial();
    pgstat_bestart_final();
 
    /* register a before-shutdown callback for LWLock cleanup */
    before_shmem_exit(ShutdownAuxiliaryProcess, 0);
 
    SetProcessingMode(NormalProcessing);
}

References Assert(), BaseInit(), before_shmem_exit(), CreateAuxProcessResourceOwner(), GetProcessingMode, IgnoreSystemIndexes, init_ps_display(), InitAuxiliaryProcess(), InitProcessing, IsUnderPostmaster, MemoryContextDelete(), NormalProcessing, pgstat_beinit(), pgstat_bestart_final(), pgstat_bestart_initial(), PostmasterContext, ProcSignalInit(), SetProcessingMode, and ShutdownAuxiliaryProcess().

Referenced by BackgroundWriterMain(), CheckpointerMain(), IoWorkerMain(), PgArchiverMain(), StartupProcessMain(), WalReceiverMain(), WalSummarizerMain(), and WalWriterMain().

ShutdownAuxiliaryProcess()

static void ShutdownAuxiliaryProcess ( int  code, Datum  arg  )

static

Definition at line 98 of file auxprocess.c.

{
    LWLockReleaseAll();
    ConditionVariableCancelSleep();
    pgstat_report_wait_end();
}

References ConditionVariableCancelSleep(), LWLockReleaseAll(), and pgstat_report_wait_end().

Referenced by AuxiliaryProcessMainCommon().