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XLOG (also known as WAL -:)) Bootstrap/Startup/Shutdown.

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First step in cleaning up backend initialization code.
Fix for FATAL: now FATAL is ERROR + exit.
This commit is contained in:
Vadim B. Mikheev
1999-10-06 21:58:18 +00:00
parent 9dcd8c528f
commit 4793740367
20 changed files with 1158 additions and 1015 deletions
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189
src/backend/utils/init/postinit.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.50 1999/09/28 11:41:09 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.51 1999/10/06 21:58:10 vadim Exp $
*
* NOTES
* InitPostgres() is the function called from PostgresMain
@ -53,12 +53,13 @@
#include "mb/pg_wchar.h"
#endif
void BaseInit(void);
static void VerifySystemDatabase(void);
static void VerifyMyDatabase(void);
static void ReverifyMyDatabase(char *name);
static void InitCommunication(void);
static void InitMyDatabaseInfo(char *name);
static void InitStdio(void);
static void InitUserid(void);
@ -385,37 +386,6 @@ InitCommunication()
{
if (MyBackendTag == -1)
elog(FATAL, "InitCommunication: missing POSTID");
/*
* Enable this if you are trying to force the backend to run as if
* it is running under the postmaster.
*
* This goto forces Postgres to attach to shared memory instead of
* using malloc'ed memory (which is the normal behavior if run
* directly).
*
* To enable emulation, run the following shell commands (in addition
* to enabling this goto)
*
* % setenv POSTID 1 % setenv POSTPORT 4321 % setenv IPC_KEY 4321000
* % postmaster & % kill -9 %1
*
* Upon doing this, Postmaster will have allocated the shared memory
* resources that Postgres will attach to if you enable
* EMULATE_UNDER_POSTMASTER.
*
* This comment may well age with time - it is current as of 8
* January 1990
*
* Greg
*/
#ifdef EMULATE_UNDER_POSTMASTER
goto forcesharedmemory;
#endif
}
else if (IsUnderPostmaster)
{
@ -439,12 +409,6 @@ InitCommunication()
* initialize shared memory and semaphores appropriately.
* ----------------
*/
#ifdef EMULATE_UNDER_POSTMASTER
forcesharedmemory:
#endif
if (!IsUnderPostmaster) /* postmaster already did this */
{
PostgresIpcKey = key;
@ -452,21 +416,6 @@ forcesharedmemory:
}
}
/* --------------------------------
* InitStdio
*
* this routine consists of a bunch of code fragments
* that used to be randomly scattered through cinit().
* they all seem to do stuff associated with io.
* --------------------------------
*/
static void
InitStdio()
{
DebugFileOpen();
}
/* --------------------------------
* InitPostgres
* Initialize POSTGRES.
@ -477,8 +426,6 @@ InitStdio()
*/
extern int NBuffers;
bool PostgresIsInitialized = false;
int lockingOff = 0; /* backend -L switch */
/*
@ -488,37 +435,11 @@ InitPostgres(char *name) /* database name */
{
bool bootstrap; /* true if BootstrapProcessing */
/* ----------------
* see if we're running in BootstrapProcessing mode
* ----------------
/*
* See if we're running in BootstrapProcessing mode
*/
bootstrap = IsBootstrapProcessingMode();
/* ----------------
* turn on the exception handler. Note: we cannot use elog, Assert,
* AssertState, etc. until after exception handling is on.
* ----------------
*/
EnableExceptionHandling(true);
/* ----------------
* A stupid check to make sure we don't call this more than once.
* But things like ReinitPostgres() get around this by just diddling
* the PostgresIsInitialized flag.
* ----------------
*/
AssertState(!PostgresIsInitialized);
/* ----------------
* Memory system initialization.
* (we may call palloc after EnableMemoryContext())
*
* Note EnableMemoryContext() must happen before EnablePortalManager().
* ----------------
*/
EnableMemoryContext(true); /* initializes the "top context" */
EnablePortalManager(true); /* memory for portal/transaction stuff */
/* ----------------
* initialize the backend local portal stack used by
* internal PQ function calls. see src/lib/libpq/be-dumpdata.c
@ -528,14 +449,6 @@ InitPostgres(char *name) /* database name */
*/
be_portalinit();
/* ----------------
* attach to shared memory and semaphores, and initialize our
* input/output/debugging file descriptors.
* ----------------
*/
InitCommunication();
InitStdio();
/*
* initialize the local buffer manager
*/
@ -574,13 +487,9 @@ InitPostgres(char *name) /* database name */
* Will try that, but may not work... - thomas 1997-11-01
*/
/* Does not touch files (?) - thomas 1997-11-01 */
smgrinit();
/* ----------------
* initialize the transaction system and the relation descriptor cache.
* Note we have to make certain the lock manager is off while we do this.
* ----------------
/*
* Initialize the transaction system and the relation descriptor cache.
* Note we have to make certain the lock manager is off while we do this.
*/
AmiTransactionOverride(IsBootstrapProcessingMode());
LockDisable(true);
@ -598,20 +507,18 @@ InitPostgres(char *name) /* database name */
LockDisable(false);
/* ----------------
/*
* Set up my per-backend PROC struct in shared memory.
* ----------------
*/
InitProcess(PostgresIpcKey);
/* ----------------
* Initialize my entry in the shared-invalidation manager's
* array of per-backend data. (Formerly this came before
* InitProcess, but now it must happen after, because it uses
* MyProc.) Once I have done this, I am visible to other backends!
/*
* Initialize my entry in the shared-invalidation manager's
* array of per-backend data. (Formerly this came before
* InitProcess, but now it must happen after, because it uses
* MyProc.) Once I have done this, I am visible to other backends!
*
* Sets up MyBackendId, a unique backend identifier.
* ----------------
* Sets up MyBackendId, a unique backend identifier.
*/
InitSharedInvalidationState();
@ -622,16 +529,14 @@ InitPostgres(char *name) /* database name */
MyBackendId);
}
/* ----------------
* initialize the access methods.
* Does not touch files (?) - thomas 1997-11-01
* ----------------
/*
* Initialize the access methods.
* Does not touch files (?) - thomas 1997-11-01
*/
initam();
/* ----------------
* initialize all the system catalog caches.
* ----------------
/*
* Initialize all the system catalog caches.
*/
zerocaches();
@ -641,34 +546,19 @@ InitPostgres(char *name) /* database name */
*/
InitCatalogCache();
/* ----------------
* set ourselves to the proper user id and figure out our postgres
* user id. If we ever add security so that we check for valid
* postgres users, we might do it here.
* ----------------
/*
* Set ourselves to the proper user id and figure out our postgres
* user id. If we ever add security so that we check for valid
* postgres users, we might do it here.
*/
InitUserid();
/* ----------------
* initialize local data in cache invalidation stuff
* ----------------
/*
* Initialize local data in cache invalidation stuff
*/
if (!bootstrap)
InitLocalInvalidateData();
/* ----------------
* ok, all done, now let's make sure we don't do it again.
* ----------------
*/
PostgresIsInitialized = true;
/* ----------------
* Done with "InitPostgres", now change to NormalProcessing unless
* we're in BootstrapProcessing mode.
* ----------------
*/
if (!bootstrap)
SetProcessingMode(NormalProcessing);
if (lockingOff)
LockDisable(true);
@ -680,3 +570,30 @@ InitPostgres(char *name) /* database name */
if (!bootstrap)
ReverifyMyDatabase(name);
}
void
BaseInit(void)
{
/*
* Turn on the exception handler. Note: we cannot use elog, Assert,
* AssertState, etc. until after exception handling is on.
*/
EnableExceptionHandling(true);
/*
* Memory system initialization - we may call palloc after
* EnableMemoryContext()). Note that EnableMemoryContext()
* must happen before EnablePortalManager().
*/
EnableMemoryContext(true); /* initializes the "top context" */
EnablePortalManager(true); /* memory for portal/transaction stuff */
/*
* Attach to shared memory and semaphores, and initialize our
* input/output/debugging file descriptors.
*/
InitCommunication();
DebugFileOpen();
smgrinit();
}