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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2001-08-25 18:52:43 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2001-08-25 18:52:43 +0000 |
| commit | 2589735da08c4e597accb6eab5ae65b6339ee630 (patch) | |
| tree | 829f7073292c6b55f86580863837441991638405 /src/backend/utils/init/postinit.c | |
| parent | 4699d81dc99ef1687e9396b57b0ed10f42699792 (diff) | |
| download | postgresql-2589735da08c4e597accb6eab5ae65b6339ee630.tar.gz postgresql-2589735da08c4e597accb6eab5ae65b6339ee630.zip | |
Replace implementation of pg_log as a relation accessed through the
buffer manager with 'pg_clog', a specialized access method modeled
on pg_xlog. This simplifies startup (don't need to play games to
open pg_log; among other things, OverrideTransactionSystem goes away),
should improve performance a little, and opens the door to recycling
commit log space by removing no-longer-needed segments of the commit
log. Actual recycling is not there yet, but I felt I should commit
this part separately since it'd still be useful if we chose not to
do transaction ID wraparound.
Diffstat (limited to 'src/backend/utils/init/postinit.c')
| -rw-r--r-- | src/backend/utils/init/postinit.c | 23 |
1 files changed, 6 insertions, 17 deletions
diff --git a/src/backend/utils/init/postinit.c b/src/backend/utils/init/postinit.c index dedd9a8e765..51bd00bec30 100644 --- a/src/backend/utils/init/postinit.c +++ b/src/backend/utils/init/postinit.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.87 2001/06/16 22:58:16 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.88 2001/08/25 18:52:42 tgl Exp $ * * *------------------------------------------------------------------------- @@ -285,26 +285,15 @@ InitPostgres(const char *dbname, const char *username) elog(FATAL, "InitPostgres: bad backend id %d", MyBackendId); /* - * 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 override state. */ - AmiTransactionOverride(IsBootstrapProcessingMode()); - LockDisable(true); + AmiTransactionOverride(bootstrap); /* - * Part of the initialization processing done here sets a read lock on - * pg_log. Since locking is disabled the set doesn't have intended - * effect of locking out writers, but this is ok, since we only lock - * it to examine AMI transaction status, and this is never written - * after initdb is done. -mer 15 June 1992 + * Initialize the relation descriptor cache. + * The pre-allocated reldescs are created here. */ - RelationCacheInitialize(); /* pre-allocated reldescs created here */ - - InitializeTransactionSystem(); /* pg_log,etc init/crash recovery - * here */ - - LockDisable(false); + RelationCacheInitialize(); /* * Initialize the access methods. Does not touch files (?) - thomas |