pgsql: Fix problems with cached tuple descriptors disappearing while - Mailing list pgsql-committers
From | tgl@postgresql.org (Tom Lane) |
---|---|
Subject | pgsql: Fix problems with cached tuple descriptors disappearing while |
Date | |
Msg-id | 20060616184224.400B59FA60C@postgresql.org Whole thread Raw |
List | pgsql-committers |
Log Message: ----------- Fix problems with cached tuple descriptors disappearing while still in use by creating a reference-count mechanism, similar to what we did a long time ago for catcache entries. The back branches have an ugly solution involving lots of extra copies, but this way is more efficient. Reference counting is only applied to tupdescs that are actually in caches --- there seems no need to use it for tupdescs that are generated in the executor, since they'll go away during plan shutdown by virtue of being in the per-query memory context. Neil Conway and Tom Lane Modified Files: -------------- pgsql/src/backend/access/common: tupdesc.c (r1.116 -> r1.117) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/common/tupdesc.c.diff?r1=1.116&r2=1.117) pgsql/src/backend/access/heap: tuptoaster.c (r1.59 -> r1.60) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/heap/tuptoaster.c.diff?r1=1.59&r2=1.60) pgsql/src/backend/commands: tablecmds.c (r1.184 -> r1.185) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/tablecmds.c.diff?r1=1.184&r2=1.185) pgsql/src/backend/executor: execJunk.c (r1.52 -> r1.53) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/execJunk.c.diff?r1=1.52&r2=1.53) execMain.c (r1.270 -> r1.271) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/execMain.c.diff?r1=1.270&r2=1.271) execQual.c (r1.190 -> r1.191) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/execQual.c.diff?r1=1.190&r2=1.191) execTuples.c (r1.93 -> r1.94) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/execTuples.c.diff?r1=1.93&r2=1.94) execUtils.c (r1.134 -> r1.135) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/execUtils.c.diff?r1=1.134&r2=1.135) nodeBitmapHeapscan.c (r1.11 -> r1.12) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeBitmapHeapscan.c.diff?r1=1.11&r2=1.12) nodeFunctionscan.c (r1.38 -> r1.39) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeFunctionscan.c.diff?r1=1.38&r2=1.39) nodeHashjoin.c (r1.81 -> r1.82) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeHashjoin.c.diff?r1=1.81&r2=1.82) nodeIndexscan.c (r1.113 -> r1.114) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeIndexscan.c.diff?r1=1.113&r2=1.114) nodeMergejoin.c (r1.79 -> r1.80) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeMergejoin.c.diff?r1=1.79&r2=1.80) nodeSeqscan.c (r1.58 -> r1.59) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeSeqscan.c.diff?r1=1.58&r2=1.59) nodeSubplan.c (r1.74 -> r1.75) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeSubplan.c.diff?r1=1.74&r2=1.75) nodeSubqueryscan.c (r1.29 -> r1.30) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeSubqueryscan.c.diff?r1=1.29&r2=1.30) nodeTidscan.c (r1.48 -> r1.49) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeTidscan.c.diff?r1=1.48&r2=1.49) pgsql/src/backend/optimizer/util: clauses.c (r1.211 -> r1.212) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/util/clauses.c.diff?r1=1.211&r2=1.212) pgsql/src/backend/parser: parse_coerce.c (r2.138 -> r2.139) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/parse_coerce.c.diff?r1=2.138&r2=2.139) parse_target.c (r1.142 -> r1.143) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/parse_target.c.diff?r1=1.142&r2=1.143) pgsql/src/backend/utils/adt: rowtypes.c (r1.15 -> r1.16) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/rowtypes.c.diff?r1=1.15&r2=1.16) ruleutils.c (r1.223 -> r1.224) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/ruleutils.c.diff?r1=1.223&r2=1.224) pgsql/src/backend/utils/cache: relcache.c (r1.241 -> r1.242) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/cache/relcache.c.diff?r1=1.241&r2=1.242) typcache.c (r1.18 -> r1.19) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/cache/typcache.c.diff?r1=1.18&r2=1.19) pgsql/src/backend/utils/fmgr: funcapi.c (r1.29 -> r1.30) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/fmgr/funcapi.c.diff?r1=1.29&r2=1.30) pgsql/src/backend/utils/resowner: README (r1.3 -> r1.4) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/resowner/README.diff?r1=1.3&r2=1.4) resowner.c (r1.19 -> r1.20) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/resowner/resowner.c.diff?r1=1.19&r2=1.20) pgsql/src/include/access: tupdesc.h (r1.49 -> r1.50) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/access/tupdesc.h.diff?r1=1.49&r2=1.50) pgsql/src/include/executor: executor.h (r1.126 -> r1.127) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/executor/executor.h.diff?r1=1.126&r2=1.127) tuptable.h (r1.30 -> r1.31) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/executor/tuptable.h.diff?r1=1.30&r2=1.31) pgsql/src/include/utils: resowner.h (r1.6 -> r1.7) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/utils/resowner.h.diff?r1=1.6&r2=1.7) typcache.h (r1.10 -> r1.11) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/utils/typcache.h.diff?r1=1.10&r2=1.11) pgsql/src/pl/plperl: plperl.c (r1.111 -> r1.112) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/pl/plperl/plperl.c.diff?r1=1.111&r2=1.112) pgsql/src/pl/plpgsql/src: pl_exec.c (r1.171 -> r1.172) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpgsql/src/pl_exec.c.diff?r1=1.171&r2=1.172) pgsql/src/pl/plpython: plpython.c (r1.81 -> r1.82) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpython/plpython.c.diff?r1=1.81&r2=1.82) pgsql/src/pl/tcl: pltcl.c (r1.104 -> r1.105) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/pl/tcl/pltcl.c.diff?r1=1.104&r2=1.105)
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