diff options
Diffstat (limited to 'src/backend/access/transam/xlogutils.c')
| -rw-r--r-- | src/backend/access/transam/xlogutils.c | 33 |
1 files changed, 10 insertions, 23 deletions
diff --git a/src/backend/access/transam/xlogutils.c b/src/backend/access/transam/xlogutils.c index 3d15033b940..1fdc7e83fb5 100644 --- a/src/backend/access/transam/xlogutils.c +++ b/src/backend/access/transam/xlogutils.c @@ -238,15 +238,14 @@ static XLogRelDesc *_xlrelarr = NULL; static Form_pg_class _xlpgcarr = NULL; static int _xlast = 0; static int _xlcnt = 0; -#define _XLOG_INITRELCACHESIZE 32 -#define _XLOG_MAXRELCACHESIZE 512 +#define _XLOG_RELCACHESIZE 512 static void _xl_init_rel_cache(void) { HASHCTL ctl; - _xlcnt = _XLOG_INITRELCACHESIZE; + _xlcnt = _XLOG_RELCACHESIZE; _xlast = 0; _xlrelarr = (XLogRelDesc*) malloc(sizeof(XLogRelDesc) * _xlcnt); memset(_xlrelarr, 0, sizeof(XLogRelDesc) * _xlcnt); @@ -261,7 +260,7 @@ _xl_init_rel_cache(void) ctl.datasize = sizeof(XLogRelDesc*); ctl.hash = tag_hash; - _xlrelcache = hash_create(_XLOG_INITRELCACHESIZE, &ctl, + _xlrelcache = hash_create(_XLOG_RELCACHESIZE, &ctl, HASH_ELEM | HASH_FUNCTION); } @@ -297,6 +296,8 @@ _xl_remove_hash_entry(XLogRelDesc **edata, int dummy) static XLogRelDesc* _xl_new_reldesc(void) { + XLogRelDesc *res; + _xlast++; if (_xlast < _xlcnt) { @@ -304,27 +305,13 @@ _xl_new_reldesc(void) return(&(_xlrelarr[_xlast])); } - if ( 2 * _xlcnt <= _XLOG_MAXRELCACHESIZE) - { - _xlrelarr = (XLogRelDesc*) realloc(_xlrelarr, - 2 * sizeof(XLogRelDesc) * _xlcnt); - memset(&(_xlrelarr[_xlcnt]), 0, sizeof(XLogRelDesc) * _xlcnt); - _xlpgcarr = (Form_pg_class) realloc(_xlpgcarr, - 2 * sizeof(FormData_pg_class) * _xlcnt); - memset(&(_xlpgcarr[_xlcnt]), 0, sizeof(FormData_pg_class) * _xlcnt); - _xlcnt += _xlcnt; - _xlrelarr[_xlast].reldata.rd_rel = &(_xlpgcarr[_xlast]); - return(&(_xlrelarr[_xlast])); - } - else /* reuse */ - { - XLogRelDesc *res = _xlrelarr[0].moreRecently; + /* reuse */ + res = _xlrelarr[0].moreRecently; - _xl_remove_hash_entry(&res, 0); + _xl_remove_hash_entry(&res, 0); - _xlast--; - return(res); - } + _xlast--; + return(res); } extern void CreateDummyCaches(void); |