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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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91
src/backend/storage/ipc/spin.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/Attic/spin.c,v 1.20 1999/07/16 04:59:44 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/Attic/spin.c,v 1.21 1999/10/06 21:58:06 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -40,15 +40,15 @@ IpcSemaphoreId SpinLockId;
#ifdef HAS_TEST_AND_SET
/* real spin lock implementations */
bool
void
CreateSpinlocks(IPCKey key)
{
/* the spin lock shared memory must have been created by now */
return TRUE;
return;
}
bool
InitSpinLocks(int init, IPCKey key)
void
InitSpinLocks(void)
{
extern SPINLOCK ShmemLock;
extern SPINLOCK ShmemIndexLock;
@@ -57,7 +57,8 @@ InitSpinLocks(int init, IPCKey key)
extern SPINLOCK ProcStructLock;
extern SPINLOCK SInvalLock;
extern SPINLOCK OidGenLockId;
extern SPINLOCK XidGenLockId;
extern SPINLOCK ControlFileLockId;
#ifdef STABLE_MEMORY_STORAGE
extern SPINLOCK MMCacheLock;
@@ -71,12 +72,14 @@ InitSpinLocks(int init, IPCKey key)
ProcStructLock = (SPINLOCK) PROCSTRUCTLOCKID;
SInvalLock = (SPINLOCK) SINVALLOCKID;
OidGenLockId = (SPINLOCK) OIDGENLOCKID;
XidGenLockId = (SPINLOCK) XIDGENLOCKID;
ControlFileLockId = (SPINLOCK) CNTLFILELOCKID;
#ifdef STABLE_MEMORY_STORAGE
MMCacheLock = (SPINLOCK) MMCACHELOCKID;
#endif
return TRUE;
return;
}
#ifdef LOCKDEBUG
@@ -224,55 +227,17 @@ SpinIsLocked(SPINLOCK lock)
* the spinlocks
*
*/
bool
void
CreateSpinlocks(IPCKey key)
{
int status;
IpcSemaphoreId semid;
SpinLockId = IpcSemaphoreCreate(key, MAX_SPINS, IPCProtection,
IpcSemaphoreDefaultStartValue, 1);
semid = IpcSemaphoreCreate(key, MAX_SPINS, IPCProtection,
IpcSemaphoreDefaultStartValue, 1, &status);
if (status == IpcSemIdExist)
{
IpcSemaphoreKill(key);
elog(NOTICE, "Destroying old spinlock semaphore");
semid = IpcSemaphoreCreate(key, MAX_SPINS, IPCProtection,
IpcSemaphoreDefaultStartValue, 1, &status);
}
if (SpinLockId <= 0)
elog(STOP, "CreateSpinlocks: cannot create spin locks");
if (semid >= 0)
{
SpinLockId = semid;
return TRUE;
}
/* cannot create spinlocks */
elog(FATAL, "CreateSpinlocks: cannot create spin locks");
return FALSE;
}
/*
* Attach to existing spinlock set
*/
static bool
AttachSpinLocks(IPCKey key)
{
IpcSemaphoreId id;
id = semget(key, MAX_SPINS, 0);
if (id < 0)
{
if (errno == EEXIST)
{
/* key is the name of someone else's semaphore */
elog(FATAL, "AttachSpinlocks: SPIN_KEY belongs to someone else");
}
/* cannot create spinlocks */
elog(FATAL, "AttachSpinlocks: cannot create spin locks");
return FALSE;
}
SpinLockId = id;
return TRUE;
return;
}
/*
@@ -287,8 +252,8 @@ AttachSpinLocks(IPCKey key)
* (SJCacheLock) for it. Same story for the main memory storage mgr.
*
*/
bool
InitSpinLocks(int init, IPCKey key)
void
InitSpinLocks(void)
{
extern SPINLOCK ShmemLock;
extern SPINLOCK ShmemIndexLock;
@@ -297,26 +262,14 @@ InitSpinLocks(int init, IPCKey key)
extern SPINLOCK ProcStructLock;
extern SPINLOCK SInvalLock;
extern SPINLOCK OidGenLockId;
extern SPINLOCK XidGenLockId;
extern SPINLOCK ControlFileLockId;
#ifdef STABLE_MEMORY_STORAGE
extern SPINLOCK MMCacheLock;
#endif
if (!init || key != IPC_PRIVATE)
{
/*
* if bootstrap and key is IPC_PRIVATE, it means that we are
* running backend by itself. no need to attach spinlocks
*/
if (!AttachSpinLocks(key))
{
elog(FATAL, "InitSpinLocks: couldnt attach spin locks");
return FALSE;
}
}
/* These five (or six) spinlocks have fixed location is shmem */
ShmemLock = (SPINLOCK) SHMEMLOCKID;
ShmemIndexLock = (SPINLOCK) SHMEMINDEXLOCKID;
@@ -325,12 +278,14 @@ InitSpinLocks(int init, IPCKey key)
ProcStructLock = (SPINLOCK) PROCSTRUCTLOCKID;
SInvalLock = (SPINLOCK) SINVALLOCKID;
OidGenLockId = (SPINLOCK) OIDGENLOCKID;
XidGenLockId = (SPINLOCK) XIDGENLOCKID;
ControlFileLockId = (SPINLOCK) CNTLFILELOCKID;
#ifdef STABLE_MEMORY_STORAGE
MMCacheLock = (SPINLOCK) MMCACHELOCKID;
#endif
return TRUE;
return;
}
#endif /* HAS_TEST_AND_SET */