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authorCVS to git conversion script <webmaster@postgresql.org>2002-06-20 20:29:55 +0000
committerCVS to git conversion script <webmaster@postgresql.org>2002-06-20 20:29:55 +0000
commit05dedace84ef8c93fea5309c3ac55f889011429b (patch)
tree4c7f513afbbc03060039a165d1770e11be711773 /src/backend/utils/cache/catcache.c
parentd84fe82230c593f3dc5d7f427849b99d1efa8a0a (diff)
This commit was manufactured by cvs2git to create branch 'ecpg_big_bison'.
Sprout from master 2002-06-20 20:29:54 UTC Bruce Momjian <bruce@momjian.us> 'Update copyright to 2002.' 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src/include/storage/buf.h src/include/storage/buf_internals.h src/include/storage/buffile.h src/include/storage/bufmgr.h src/include/storage/bufpage.h src/include/storage/fd.h src/include/storage/freespace.h src/include/storage/ipc.h src/include/storage/item.h src/include/storage/itemid.h src/include/storage/itempos.h src/include/storage/itemptr.h src/include/storage/large_object.h src/include/storage/lmgr.h src/include/storage/lock.h src/include/storage/lwlock.h src/include/storage/off.h src/include/storage/page.h src/include/storage/pg_sema.h src/include/storage/pg_shmem.h src/include/storage/pmsignal.h src/include/storage/pos.h src/include/storage/proc.h src/include/storage/relfilenode.h src/include/storage/s_lock.h src/include/storage/shmem.h src/include/storage/sinval.h src/include/storage/sinvaladt.h src/include/storage/smgr.h src/include/storage/spin.h src/include/strdup.h src/include/tcop/dest.h src/include/tcop/fastpath.h src/include/tcop/pquery.h src/include/tcop/tcopdebug.h src/include/tcop/tcopprot.h src/include/tcop/utility.h src/include/utils/acl.h src/include/utils/array.h src/include/utils/ascii.h src/include/utils/bit.h src/include/utils/builtins.h src/include/utils/cash.h src/include/utils/catcache.h src/include/utils/date.h src/include/utils/datetime.h src/include/utils/datum.h src/include/utils/dynahash.h src/include/utils/dynamic_loader.h src/include/utils/elog.h src/include/utils/exc.h src/include/utils/excid.h src/include/utils/fcache.h src/include/utils/fmgrtab.h src/include/utils/formatting.h src/include/utils/geo_decls.h src/include/utils/guc.h src/include/utils/hsearch.h src/include/utils/inet.h src/include/utils/int8.h src/include/utils/inval.h src/include/utils/logtape.h src/include/utils/lsyscache.h src/include/utils/memutils.h src/include/utils/nabstime.h src/include/utils/numeric.h src/include/utils/palloc.h src/include/utils/pg_crc.h src/include/utils/pg_locale.h src/include/utils/pg_lzcompress.h src/include/utils/portal.h src/include/utils/ps_status.h src/include/utils/rel.h src/include/utils/relcache.h src/include/utils/selfuncs.h src/include/utils/sets.h src/include/utils/syscache.h src/include/utils/timestamp.h src/include/utils/tqual.h src/include/utils/tuplesort.h src/include/utils/tuplestore.h src/include/utils/varbit.h src/interfaces/Makefile src/interfaces/cli/example1.c src/interfaces/cli/example2.c src/interfaces/cli/sqlcli.h src/interfaces/jdbc/CHANGELOG src/interfaces/jdbc/Implementation src/interfaces/jdbc/Makefile src/interfaces/jdbc/README src/interfaces/jdbc/build.xml src/interfaces/jdbc/example/ImageViewer.java src/interfaces/jdbc/example/Unicode.java src/interfaces/jdbc/example/basic.java src/interfaces/jdbc/example/blobtest.java src/interfaces/jdbc/example/corba/StockClient.java src/interfaces/jdbc/example/corba/StockDB.java src/interfaces/jdbc/example/corba/StockDispenserImpl.java src/interfaces/jdbc/example/corba/StockItemImpl.java src/interfaces/jdbc/example/corba/StockServer.java src/interfaces/jdbc/example/corba/readme src/interfaces/jdbc/example/corba/stock.idl src/interfaces/jdbc/example/corba/stock.sql src/interfaces/jdbc/example/datestyle.java src/interfaces/jdbc/example/metadata.java src/interfaces/jdbc/example/psql.java src/interfaces/jdbc/example/threadsafe.java src/interfaces/jdbc/jdbc.jpx src/interfaces/jdbc/org/postgresql/Connection.java src/interfaces/jdbc/org/postgresql/Driver.java.in src/interfaces/jdbc/org/postgresql/Field.java src/interfaces/jdbc/org/postgresql/PG_Stream.java src/interfaces/jdbc/org/postgresql/PostgresqlDataSource.java src/interfaces/jdbc/org/postgresql/ResultSet.java src/interfaces/jdbc/org/postgresql/Statement.java src/interfaces/jdbc/org/postgresql/core/BytePoolDim1.java src/interfaces/jdbc/org/postgresql/core/BytePoolDim2.java src/interfaces/jdbc/org/postgresql/core/Encoding.java src/interfaces/jdbc/org/postgresql/core/MemoryPool.java src/interfaces/jdbc/org/postgresql/core/ObjectPool.java src/interfaces/jdbc/org/postgresql/core/QueryExecutor.java src/interfaces/jdbc/org/postgresql/core/SimpleObjectPool.java src/interfaces/jdbc/org/postgresql/core/StartupPacket.java src/interfaces/jdbc/org/postgresql/errors.properties src/interfaces/jdbc/org/postgresql/errors_de.properties src/interfaces/jdbc/org/postgresql/errors_fr.properties src/interfaces/jdbc/org/postgresql/errors_it.properties src/interfaces/jdbc/org/postgresql/errors_nl.properties src/interfaces/jdbc/org/postgresql/errors_zh_TW.properties src/interfaces/jdbc/org/postgresql/fastpath/Fastpath.java src/interfaces/jdbc/org/postgresql/fastpath/FastpathArg.java src/interfaces/jdbc/org/postgresql/geometric/PGbox.java src/interfaces/jdbc/org/postgresql/geometric/PGcircle.java src/interfaces/jdbc/org/postgresql/geometric/PGline.java src/interfaces/jdbc/org/postgresql/geometric/PGlseg.java src/interfaces/jdbc/org/postgresql/geometric/PGpath.java src/interfaces/jdbc/org/postgresql/geometric/PGpoint.java src/interfaces/jdbc/org/postgresql/geometric/PGpolygon.java src/interfaces/jdbc/org/postgresql/jdbc1/CallableStatement.java src/interfaces/jdbc/org/postgresql/jdbc1/Connection.java src/interfaces/jdbc/org/postgresql/jdbc1/DatabaseMetaData.java src/interfaces/jdbc/org/postgresql/jdbc1/PreparedStatement.java src/interfaces/jdbc/org/postgresql/jdbc1/ResultSet.java src/interfaces/jdbc/org/postgresql/jdbc1/ResultSetMetaData.java src/interfaces/jdbc/org/postgresql/jdbc1/Statement.java src/interfaces/jdbc/org/postgresql/jdbc2/Array.java src/interfaces/jdbc/org/postgresql/jdbc2/CallableStatement.java src/interfaces/jdbc/org/postgresql/jdbc2/Connection.java src/interfaces/jdbc/org/postgresql/jdbc2/DatabaseMetaData.java src/interfaces/jdbc/org/postgresql/jdbc2/PBatchUpdateException.java src/interfaces/jdbc/org/postgresql/jdbc2/PreparedStatement.java src/interfaces/jdbc/org/postgresql/jdbc2/ResultSet.java src/interfaces/jdbc/org/postgresql/jdbc2/ResultSetMetaData.java src/interfaces/jdbc/org/postgresql/jdbc2/Statement.java src/interfaces/jdbc/org/postgresql/jdbc2/UpdateableResultSet.java src/interfaces/jdbc/org/postgresql/largeobject/BlobInputStream.java src/interfaces/jdbc/org/postgresql/largeobject/BlobOutputStream.java src/interfaces/jdbc/org/postgresql/largeobject/LargeObject.java src/interfaces/jdbc/org/postgresql/largeobject/LargeObjectManager.java src/interfaces/jdbc/org/postgresql/largeobject/PGblob.java src/interfaces/jdbc/org/postgresql/largeobject/PGclob.java src/interfaces/jdbc/org/postgresql/test/JDBC2Tests.java src/interfaces/jdbc/org/postgresql/test/README src/interfaces/jdbc/org/postgresql/test/jdbc2/ANTTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/BatchExecuteTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/BlobTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/ConnectionTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DatabaseMetaDataTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DateTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DriverTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/EncodingTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/JBuilderTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/MiscTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/ResultSetTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/TimeTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/TimestampTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/UpdateableResultTest.java src/interfaces/jdbc/org/postgresql/util/MD5Digest.java src/interfaces/jdbc/org/postgresql/util/MessageTranslator.java src/interfaces/jdbc/org/postgresql/util/PGbytea.java src/interfaces/jdbc/org/postgresql/util/PGmoney.java src/interfaces/jdbc/org/postgresql/util/PGobject.java src/interfaces/jdbc/org/postgresql/util/PGtokenizer.java src/interfaces/jdbc/org/postgresql/util/PSQLException.java src/interfaces/jdbc/org/postgresql/util/Serialize.java src/interfaces/jdbc/org/postgresql/util/UnixCrypt.java src/interfaces/jdbc/org/postgresql/xa/ClientConnection.java src/interfaces/jdbc/org/postgresql/xa/TwoPhaseConnection.java src/interfaces/jdbc/org/postgresql/xa/TxConnection.java src/interfaces/jdbc/org/postgresql/xa/XAConnectionImpl.java src/interfaces/jdbc/org/postgresql/xa/XADataSourceImpl.java src/interfaces/jdbc/utils/CheckVersion.java src/interfaces/jdbc/utils/buildDriver src/interfaces/jdbc/utils/changelog.pl src/interfaces/libpgeasy/Makefile src/interfaces/libpgeasy/README src/interfaces/libpgeasy/examples/Makefile src/interfaces/libpgeasy/examples/pginsert.c src/interfaces/libpgeasy/examples/pgmultiresult.c src/interfaces/libpgeasy/examples/pgnulltest.c src/interfaces/libpgeasy/examples/pgwordcount.c src/interfaces/libpgeasy/halt.c src/interfaces/libpgeasy/halt.h src/interfaces/libpgeasy/libpgeasy.c src/interfaces/libpgeasy/libpgeasy.h src/interfaces/libpgtcl/Makefile src/interfaces/libpgtcl/README 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src/interfaces/libpq/ru.po src/interfaces/libpq/sv.po src/interfaces/libpq/win32.c src/interfaces/libpq/win32.h src/interfaces/libpq/win32.mak src/interfaces/libpq/zh_CN.po src/interfaces/libpq/zh_TW.po src/interfaces/libpq++/CHANGES src/interfaces/libpq++/Makefile src/interfaces/libpq++/README src/interfaces/libpq++/TODO src/interfaces/libpq++/examples/Makefile src/interfaces/libpq++/examples/testlibpq0.cc src/interfaces/libpq++/examples/testlibpq1.cc src/interfaces/libpq++/examples/testlibpq2.cc src/interfaces/libpq++/examples/testlibpq2.sql src/interfaces/libpq++/examples/testlibpq3.cc src/interfaces/libpq++/examples/testlibpq3.sql src/interfaces/libpq++/examples/testlibpq4.cc src/interfaces/libpq++/examples/testlibpq4.sql src/interfaces/libpq++/examples/testlibpq5.cc src/interfaces/libpq++/examples/testlibpq5.sql src/interfaces/libpq++/examples/testlibpq6.cc src/interfaces/libpq++/examples/testlo.cc src/interfaces/libpq++/libpq++.h src/interfaces/libpq++/libpq++dll.rc src/interfaces/libpq++/pgconnection.cc src/interfaces/libpq++/pgconnection.h src/interfaces/libpq++/pgcursordb.cc src/interfaces/libpq++/pgcursordb.h src/interfaces/libpq++/pgdatabase.cc src/interfaces/libpq++/pgdatabase.h src/interfaces/libpq++/pglobject.cc src/interfaces/libpq++/pglobject.h src/interfaces/libpq++/pgtransdb.cc src/interfaces/libpq++/pgtransdb.h src/interfaces/libpq++/win32.mak src/interfaces/odbc/GNUmakefile src/interfaces/odbc/bind.c src/interfaces/odbc/bind.h src/interfaces/odbc/columninfo.c src/interfaces/odbc/columninfo.h src/interfaces/odbc/connection.c src/interfaces/odbc/connection.h src/interfaces/odbc/convert.c src/interfaces/odbc/convert.h src/interfaces/odbc/descriptor.h src/interfaces/odbc/dlg_specific.c src/interfaces/odbc/dlg_specific.h src/interfaces/odbc/dlg_wingui.c src/interfaces/odbc/drvconn.c src/interfaces/odbc/environ.c src/interfaces/odbc/environ.h src/interfaces/odbc/execute.c src/interfaces/odbc/gpps.c src/interfaces/odbc/gpps.h src/interfaces/odbc/info.c src/interfaces/odbc/info30.c src/interfaces/odbc/iodbc.h src/interfaces/odbc/isql.h src/interfaces/odbc/isqlext.h src/interfaces/odbc/license.txt src/interfaces/odbc/lobj.c src/interfaces/odbc/lobj.h src/interfaces/odbc/md5.c src/interfaces/odbc/md5.h src/interfaces/odbc/misc.c src/interfaces/odbc/misc.h src/interfaces/odbc/multibyte.c src/interfaces/odbc/multibyte.h src/interfaces/odbc/notice.txt src/interfaces/odbc/odbc.sql src/interfaces/odbc/odbcapi.c src/interfaces/odbc/odbcapi25w.c src/interfaces/odbc/odbcapi30.c src/interfaces/odbc/odbcapi30w.c src/interfaces/odbc/odbcapiw.c src/interfaces/odbc/odbcinst.ini src/interfaces/odbc/options.c src/interfaces/odbc/parse.c src/interfaces/odbc/pgapi30.c src/interfaces/odbc/pgapifunc.h src/interfaces/odbc/pgtypes.c src/interfaces/odbc/pgtypes.h src/interfaces/odbc/psqlodbc.c src/interfaces/odbc/psqlodbc.h src/interfaces/odbc/psqlodbc.rc src/interfaces/odbc/psqlodbc.reg src/interfaces/odbc/psqlodbc30.reg src/interfaces/odbc/psqlodbc30w.reg src/interfaces/odbc/psqlodbc_api30.def src/interfaces/odbc/psqlodbc_api30w.def src/interfaces/odbc/psqlodbc_apiw.def src/interfaces/odbc/psqlodbc_win32.def src/interfaces/odbc/qresult.c src/interfaces/odbc/qresult.h src/interfaces/odbc/readme.txt src/interfaces/odbc/resource.h src/interfaces/odbc/results.c src/interfaces/odbc/setup.c src/interfaces/odbc/setup.rul src/interfaces/odbc/socket.c src/interfaces/odbc/socket.h src/interfaces/odbc/statement.c src/interfaces/odbc/statement.h src/interfaces/odbc/tuple.c src/interfaces/odbc/tuple.h src/interfaces/odbc/tuplelist.c src/interfaces/odbc/tuplelist.h src/interfaces/odbc/version.h src/interfaces/odbc/win32.mak src/interfaces/odbc/win32_30.mak src/interfaces/odbc/win32_30w.mak src/interfaces/odbc/win32w.mak src/interfaces/odbc/win_md5.c src/interfaces/odbc/win_setup.h src/interfaces/odbc/win_unicode.c src/interfaces/perl5/Changes src/interfaces/perl5/GNUmakefile src/interfaces/perl5/MANIFEST src/interfaces/perl5/Makefile.PL src/interfaces/perl5/Pg.pm src/interfaces/perl5/Pg.xs src/interfaces/perl5/README src/interfaces/perl5/examples/ApachePg.pl src/interfaces/perl5/examples/example.newstyle src/interfaces/perl5/examples/example.oldstyle src/interfaces/perl5/ppport.h src/interfaces/perl5/test.pl src/interfaces/perl5/typemap src/interfaces/python/Announce src/interfaces/python/ChangeLog src/interfaces/python/GNUmakefile src/interfaces/python/PyGreSQL.spec src/interfaces/python/README src/interfaces/python/README.linux src/interfaces/python/Setup.in.raw src/interfaces/python/pg.py src/interfaces/python/pgdb.py src/interfaces/python/pgmodule.c src/interfaces/python/setup.py src/interfaces/python/tutorial/advanced.py src/interfaces/python/tutorial/basics.py src/interfaces/python/tutorial/func.py src/interfaces/python/tutorial/syscat.py src/interfaces/ssl/client.conf src/interfaces/ssl/mkcert.sh src/interfaces/ssl/pgkeygen.sh src/interfaces/ssl/root.conf src/interfaces/ssl/server.conf src/makefiles/Makefile.aix src/makefiles/Makefile.beos src/makefiles/Makefile.bsdi src/makefiles/Makefile.darwin src/makefiles/Makefile.dgux src/makefiles/Makefile.freebsd src/makefiles/Makefile.hpux src/makefiles/Makefile.irix5 src/makefiles/Makefile.linux src/makefiles/Makefile.netbsd src/makefiles/Makefile.openbsd src/makefiles/Makefile.osf src/makefiles/Makefile.qnx4 src/makefiles/Makefile.sco src/makefiles/Makefile.solaris src/makefiles/Makefile.sunos4 src/makefiles/Makefile.svr4 src/makefiles/Makefile.ultrix4 src/makefiles/Makefile.univel src/makefiles/Makefile.unixware src/makefiles/Makefile.win src/nls-global.mk src/pl/Makefile src/pl/plperl/GNUmakefile src/pl/plperl/README src/pl/plperl/SPI.xs src/pl/plperl/eloglvl.c src/pl/plperl/eloglvl.h src/pl/plperl/plperl.c src/pl/plperl/ppport.h src/pl/plpgsql/Makefile src/pl/plpgsql/src/.cvsignore src/pl/plpgsql/src/INSTALL src/pl/plpgsql/src/Makefile src/pl/plpgsql/src/gram.y src/pl/plpgsql/src/pl_comp.c 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src/test/bench/query01 src/test/bench/query02 src/test/bench/query03 src/test/bench/query04 src/test/bench/query05 src/test/bench/query06 src/test/bench/query07 src/test/bench/query08 src/test/bench/query09 src/test/bench/query10 src/test/bench/query11 src/test/bench/query12 src/test/bench/query13 src/test/bench/query14 src/test/bench/query15 src/test/bench/query16 src/test/bench/query17 src/test/bench/query18 src/test/bench/query19 src/test/bench/query20 src/test/bench/query21 src/test/bench/query22 src/test/bench/query23 src/test/bench/query24 src/test/bench/query25 src/test/bench/query26 src/test/bench/query27 src/test/bench/query28 src/test/bench/query29 src/test/bench/query30 src/test/bench/query31 src/test/bench/query32 src/test/bench/runwisc.sh src/test/bench/wholebench.sh src/test/examples/Makefile src/test/examples/testlibpq.c src/test/examples/testlibpq2.c src/test/examples/testlibpq2.sql src/test/examples/testlibpq3.c src/test/examples/testlibpq3.sql src/test/examples/testlibpq4.c src/test/examples/testlo.c src/test/locale/Makefile src/test/locale/README src/test/locale/de_DE.ISO8859-1/Makefile src/test/locale/de_DE.ISO8859-1/README src/test/locale/de_DE.ISO8859-1/expected/de-ctype.out src/test/locale/de_DE.ISO8859-1/expected/test-de-char.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-select.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-sort.out src/test/locale/de_DE.ISO8859-1/expected/test-de-text.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-char.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-text.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-varchar.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-varchar.sql.out src/test/locale/de_DE.ISO8859-1/runall src/test/locale/de_DE.ISO8859-1/test-de-select.sql.in src/test/locale/de_DE.ISO8859-1/test-de-sort.in src/test/locale/de_DE.ISO8859-1/test-de-upper.sql.in src/test/locale/de_DE.ISO8859-1/test-de.sql.in src/test/locale/gr_GR.ISO8859-7/Makefile src/test/locale/gr_GR.ISO8859-7/README src/test/locale/gr_GR.ISO8859-7/expected/gr-ctype.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-char.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-select.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-sort.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-text.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-varchar.sql.out src/test/locale/gr_GR.ISO8859-7/runall src/test/locale/gr_GR.ISO8859-7/test-gr-select.sql.in src/test/locale/gr_GR.ISO8859-7/test-gr-sort.in src/test/locale/gr_GR.ISO8859-7/test-gr.sql.in src/test/locale/koi8-r/Makefile src/test/locale/koi8-r/expected/koi8-ctype.out src/test/locale/koi8-r/expected/test-koi8-char.sql.out src/test/locale/koi8-r/expected/test-koi8-select.sql.out src/test/locale/koi8-r/expected/test-koi8-sort.out src/test/locale/koi8-r/expected/test-koi8-text.sql.out src/test/locale/koi8-r/expected/test-koi8-varchar.sql.out src/test/locale/koi8-r/runall src/test/locale/koi8-r/test-koi8-select.sql.in src/test/locale/koi8-r/test-koi8-sort.in src/test/locale/koi8-r/test-koi8.sql.in src/test/locale/koi8-to-win1251/Makefile src/test/locale/koi8-to-win1251/README src/test/locale/koi8-to-win1251/expected/test-koi8-char.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-select.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-sort.out src/test/locale/koi8-to-win1251/expected/test-koi8-text.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-varchar.sql.out src/test/locale/koi8-to-win1251/runall src/test/locale/koi8-to-win1251/test-koi8-select.sql.in src/test/locale/koi8-to-win1251/test-koi8-sort.in src/test/locale/koi8-to-win1251/test-koi8.sql.in src/test/locale/sort-test.pl src/test/locale/sort-test.py src/test/locale/test-ctype.c src/test/locale/test-pgsql-locale.c src/test/mb/README src/test/mb/expected/big5.out src/test/mb/expected/euc_cn.out src/test/mb/expected/euc_jp.out src/test/mb/expected/euc_kr.out src/test/mb/expected/euc_tw.out src/test/mb/expected/mule_internal.out src/test/mb/expected/sjis.out src/test/mb/expected/unicode.out src/test/mb/mbregress.sh src/test/mb/sql/big5.sql src/test/mb/sql/euc_cn.sql src/test/mb/sql/euc_jp.sql src/test/mb/sql/euc_kr.sql src/test/mb/sql/euc_tw.sql src/test/mb/sql/mule_internal.sql src/test/mb/sql/sjis.sql src/test/mb/sql/unicode.sql src/test/performance/results/PgSQL.970926 src/test/performance/runtests.pl src/test/performance/sqls/connection src/test/performance/sqls/crtsimple src/test/performance/sqls/crtsimpleidx src/test/performance/sqls/drpsimple src/test/performance/sqls/inssimple src/test/performance/sqls/inssimple.data src/test/performance/sqls/orbsimple src/test/performance/sqls/slcsimple src/test/performance/sqls/slcsimple.data src/test/performance/sqls/vacuum src/test/performance/start-pgsql.sh src/test/regress/GNUmakefile src/test/regress/Makefile src/test/regress/README src/test/regress/data/agg.data src/test/regress/data/constrf.data src/test/regress/data/constro.data src/test/regress/data/dept.data src/test/regress/data/desc.data src/test/regress/data/emp.data src/test/regress/data/hash.data src/test/regress/data/onek.data src/test/regress/data/person.data src/test/regress/data/real_city.data src/test/regress/data/rect.data src/test/regress/data/streets.data src/test/regress/data/stud_emp.data src/test/regress/data/student.data src/test/regress/data/tenk.data src/test/regress/expected/abstime-solaris-1947.out src/test/regress/expected/abstime.out src/test/regress/expected/aggregates.out src/test/regress/expected/alter_table.out src/test/regress/expected/arrays.out src/test/regress/expected/bit.out src/test/regress/expected/boolean.out src/test/regress/expected/box.out src/test/regress/expected/btree_index.out src/test/regress/expected/case.out src/test/regress/expected/char.out src/test/regress/expected/char_1.out src/test/regress/expected/circle.out src/test/regress/expected/comments.out src/test/regress/expected/create_aggregate.out src/test/regress/expected/create_index.out src/test/regress/expected/create_misc.out src/test/regress/expected/create_operator.out src/test/regress/expected/create_table.out src/test/regress/expected/create_type.out src/test/regress/expected/create_view.out src/test/regress/expected/date.out src/test/regress/expected/domain.out src/test/regress/expected/errors.out src/test/regress/expected/euc_cn.out src/test/regress/expected/euc_jp.out src/test/regress/expected/euc_kr.out src/test/regress/expected/euc_tw.out src/test/regress/expected/float4-exp-three-digits.out src/test/regress/expected/float4.out src/test/regress/expected/float8-exp-three-digits.out src/test/regress/expected/float8-fp-exception.out src/test/regress/expected/float8-small-is-zero.out src/test/regress/expected/float8.out src/test/regress/expected/foreign_key.out src/test/regress/expected/geometry-alpha-precision.out src/test/regress/expected/geometry-bsdi-precision.out src/test/regress/expected/geometry-i86-gnulibc.out src/test/regress/expected/geometry-intel-beos.out src/test/regress/expected/geometry-irix.out src/test/regress/expected/geometry-positive-zeros-bsd.out src/test/regress/expected/geometry-positive-zeros.out src/test/regress/expected/geometry-powerpc-aix4.out src/test/regress/expected/geometry-powerpc-darwin.out src/test/regress/expected/geometry-powerpc-linux-gnulibc1.out src/test/regress/expected/geometry-solaris-i386-pc.out src/test/regress/expected/geometry-solaris-precision.out src/test/regress/expected/geometry-uw7-cc.out src/test/regress/expected/geometry-uw7-gcc.out src/test/regress/expected/geometry.out src/test/regress/expected/hash_index.out src/test/regress/expected/horology-no-DST-before-1970.out src/test/regress/expected/horology-solaris-1947.out src/test/regress/expected/horology.out src/test/regress/expected/inet.out src/test/regress/expected/inherit.out src/test/regress/expected/insert.out src/test/regress/expected/int2.out src/test/regress/expected/int4.out src/test/regress/expected/int8-exp-three-digits.out src/test/regress/expected/int8.out src/test/regress/expected/interval.out src/test/regress/expected/join.out src/test/regress/expected/limit.out src/test/regress/expected/lseg.out src/test/regress/expected/mule_internal.out src/test/regress/expected/name.out src/test/regress/expected/numeric.out src/test/regress/expected/numeric_big.out src/test/regress/expected/numerology.out src/test/regress/expected/oid.out src/test/regress/expected/oidjoins.out src/test/regress/expected/opr_sanity.out src/test/regress/expected/path.out src/test/regress/expected/plpgsql.out src/test/regress/expected/point.out src/test/regress/expected/polygon.out src/test/regress/expected/portals.out src/test/regress/expected/portals_p2.out src/test/regress/expected/privileges.out src/test/regress/expected/random.out src/test/regress/expected/reltime.out src/test/regress/expected/rules.out src/test/regress/expected/sanity_check.out src/test/regress/expected/select.out src/test/regress/expected/select_distinct.out src/test/regress/expected/select_distinct_on.out src/test/regress/expected/select_having.out src/test/regress/expected/select_having_1.out src/test/regress/expected/select_implicit.out src/test/regress/expected/select_implicit_1.out src/test/regress/expected/select_into.out src/test/regress/expected/select_views.out src/test/regress/expected/select_views_1.out src/test/regress/expected/sql_ascii.out src/test/regress/expected/strings.out src/test/regress/expected/subselect.out src/test/regress/expected/temp.out src/test/regress/expected/text.out src/test/regress/expected/time.out src/test/regress/expected/timestamp.out src/test/regress/expected/timestamptz.out src/test/regress/expected/timetz.out src/test/regress/expected/tinterval-solaris-1947.out src/test/regress/expected/tinterval.out src/test/regress/expected/transactions.out src/test/regress/expected/triggers.out src/test/regress/expected/type_sanity.out src/test/regress/expected/union.out src/test/regress/expected/varchar.out src/test/regress/expected/varchar_1.out src/test/regress/input/constraints.source src/test/regress/input/copy.source src/test/regress/input/create_function_1.source src/test/regress/input/create_function_2.source src/test/regress/input/misc.source src/test/regress/output/constraints.source src/test/regress/output/copy.source src/test/regress/output/create_function_1.source src/test/regress/output/create_function_2.source src/test/regress/output/misc.source src/test/regress/parallel_schedule src/test/regress/pg_regress.sh src/test/regress/regress.c src/test/regress/regressplans.sh src/test/regress/resultmap src/test/regress/serial_schedule src/test/regress/sql/abstime.sql src/test/regress/sql/aggregates.sql src/test/regress/sql/alter_table.sql src/test/regress/sql/arrays.sql src/test/regress/sql/bit.sql src/test/regress/sql/boolean.sql src/test/regress/sql/box.sql src/test/regress/sql/btree_index.sql src/test/regress/sql/case.sql src/test/regress/sql/char.sql src/test/regress/sql/circle.sql src/test/regress/sql/comments.sql src/test/regress/sql/create_aggregate.sql src/test/regress/sql/create_index.sql src/test/regress/sql/create_misc.sql src/test/regress/sql/create_operator.sql src/test/regress/sql/create_table.sql src/test/regress/sql/create_type.sql src/test/regress/sql/create_view.sql src/test/regress/sql/date.sql src/test/regress/sql/domain.sql src/test/regress/sql/drop.sql src/test/regress/sql/errors.sql src/test/regress/sql/euc_cn.sql src/test/regress/sql/euc_jp.sql src/test/regress/sql/euc_kr.sql src/test/regress/sql/euc_tw.sql src/test/regress/sql/float4.sql src/test/regress/sql/float8.sql src/test/regress/sql/foreign_key.sql src/test/regress/sql/geometry.sql src/test/regress/sql/hash_index.sql src/test/regress/sql/horology.sql src/test/regress/sql/inet.sql src/test/regress/sql/inherit.sql src/test/regress/sql/insert.sql src/test/regress/sql/int2.sql src/test/regress/sql/int4.sql src/test/regress/sql/int8.sql src/test/regress/sql/interval.sql src/test/regress/sql/join.sql src/test/regress/sql/limit.sql src/test/regress/sql/lseg.sql src/test/regress/sql/mule_internal.sql src/test/regress/sql/name.sql src/test/regress/sql/numeric.sql src/test/regress/sql/numeric_big.sql src/test/regress/sql/numerology.sql src/test/regress/sql/oid.sql src/test/regress/sql/oidjoins.sql src/test/regress/sql/opr_sanity.sql src/test/regress/sql/path.sql src/test/regress/sql/plpgsql.sql src/test/regress/sql/point.sql src/test/regress/sql/polygon.sql src/test/regress/sql/portals.sql src/test/regress/sql/portals_p2.sql src/test/regress/sql/privileges.sql src/test/regress/sql/random.sql src/test/regress/sql/reltime.sql src/test/regress/sql/rules.sql src/test/regress/sql/sanity_check.sql src/test/regress/sql/select.sql src/test/regress/sql/select_distinct.sql src/test/regress/sql/select_distinct_on.sql src/test/regress/sql/select_having.sql src/test/regress/sql/select_implicit.sql src/test/regress/sql/select_into.sql src/test/regress/sql/select_views.sql src/test/regress/sql/sql_ascii.sql src/test/regress/sql/strings.sql src/test/regress/sql/subselect.sql src/test/regress/sql/temp.sql src/test/regress/sql/text.sql src/test/regress/sql/time.sql src/test/regress/sql/timestamp.sql src/test/regress/sql/timestamptz.sql src/test/regress/sql/timetz.sql src/test/regress/sql/tinterval.sql src/test/regress/sql/transactions.sql src/test/regress/sql/triggers.sql src/test/regress/sql/type_sanity.sql src/test/regress/sql/union.sql src/test/regress/sql/varchar.sql src/tools/RELEASE_CHANGES src/tools/backend/README src/tools/backend/backend_dirs.html src/tools/backend/flow.fig src/tools/backend/flow.gif src/tools/backend/index.html src/tools/ccsym src/tools/copyright src/tools/entab/Makefile src/tools/entab/entab.c src/tools/entab/entab.man src/tools/entab/halt.c src/tools/find_badmacros src/tools/find_static src/tools/find_typedef src/tools/make_ctags src/tools/make_diff/README src/tools/make_diff/cporig src/tools/make_diff/difforig src/tools/make_diff/rmorig src/tools/make_etags src/tools/make_keywords src/tools/make_mkid src/tools/pgcvslog src/tools/pginclude/README src/tools/pginclude/pgcompinclude src/tools/pginclude/pgdefine src/tools/pginclude/pgfixinclude src/tools/pginclude/pgrminclude src/tools/pgindent/README src/tools/pgindent/indent.bsd.patch src/tools/pgindent/pgcppindent src/tools/pgindent/pgindent src/tools/pgindent/pgjindent src/tutorial/Makefile src/tutorial/README src/tutorial/advanced.source src/tutorial/basics.source src/tutorial/beard.c src/tutorial/complex.c src/tutorial/complex.source src/tutorial/funcs.c src/tutorial/funcs.source src/tutorial/funcs_new.c src/tutorial/syscat.source src/utils/Makefile src/utils/README src/utils/dllinit.c src/utils/getopt.c src/utils/strdup.c src/win32.mak
Diffstat (limited to 'src/backend/utils/cache/catcache.c')
-rw-r--r--src/backend/utils/cache/catcache.c1768
1 files changed, 0 insertions, 1768 deletions
diff --git a/src/backend/utils/cache/catcache.c b/src/backend/utils/cache/catcache.c
deleted file mode 100644
index a4f05a7d117..00000000000
--- a/src/backend/utils/cache/catcache.c
+++ /dev/null
@@ -1,1768 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * catcache.c
- * System catalog cache for tuples matching a key.
- *
- * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- *
- * IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/utils/cache/catcache.c,v 1.96 2002/06/20 20:29:39 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-#include "postgres.h"
-
-#include "access/genam.h"
-#include "access/hash.h"
-#include "access/heapam.h"
-#include "access/valid.h"
-#include "catalog/pg_opclass.h"
-#include "catalog/pg_operator.h"
-#include "catalog/pg_type.h"
-#include "catalog/catname.h"
-#include "catalog/indexing.h"
-#include "miscadmin.h"
-#ifdef CATCACHE_STATS
-#include "storage/ipc.h" /* for on_proc_exit */
-#endif
-#include "utils/builtins.h"
-#include "utils/fmgroids.h"
-#include "utils/catcache.h"
-#include "utils/relcache.h"
-#include "utils/syscache.h"
-
-
-/* #define CACHEDEBUG */ /* turns DEBUG elogs on */
-
-/*
- * Constants related to size of the catcache.
- *
- * NCCBUCKETS must be a power of two and must be less than 64K (because
- * SharedInvalCatcacheMsg crams hash indexes into a uint16 field). In
- * practice it should be a lot less, anyway, to avoid chewing up too much
- * space on hash bucket headers.
- *
- * MAXCCTUPLES could be as small as a few hundred, if per-backend memory
- * consumption is at a premium.
- */
-#define NCCBUCKETS 256 /* Hash buckets per CatCache */
-#define MAXCCTUPLES 5000 /* Maximum # of tuples in all caches */
-
-/*
- * Given a hash value and the size of the hash table, find the bucket
- * in which the hash value belongs. Since the hash table must contain
- * a power-of-2 number of elements, this is a simple bitmask.
- */
-#define HASH_INDEX(h, sz) ((Index) ((h) & ((sz) - 1)))
-
-
-/*
- * variables, macros and other stuff
- */
-
-#ifdef CACHEDEBUG
-#define CACHE1_elog(a,b) elog(a,b)
-#define CACHE2_elog(a,b,c) elog(a,b,c)
-#define CACHE3_elog(a,b,c,d) elog(a,b,c,d)
-#define CACHE4_elog(a,b,c,d,e) elog(a,b,c,d,e)
-#define CACHE5_elog(a,b,c,d,e,f) elog(a,b,c,d,e,f)
-#define CACHE6_elog(a,b,c,d,e,f,g) elog(a,b,c,d,e,f,g)
-#else
-#define CACHE1_elog(a,b)
-#define CACHE2_elog(a,b,c)
-#define CACHE3_elog(a,b,c,d)
-#define CACHE4_elog(a,b,c,d,e)
-#define CACHE5_elog(a,b,c,d,e,f)
-#define CACHE6_elog(a,b,c,d,e,f,g)
-#endif
-
-/* Cache management header --- pointer is NULL until created */
-static CatCacheHeader *CacheHdr = NULL;
-
-/*
- * EQPROC is used in CatalogCacheInitializeCache to find the equality
- * functions for system types that are used as cache key fields.
- * See also GetCCHashFunc, which should support the same set of types.
- *
- * XXX this should be replaced by catalog lookups,
- * but that seems to pose considerable risk of circularity...
- */
-static const Oid eqproc[] = {
- F_BOOLEQ, InvalidOid, F_CHAREQ, F_NAMEEQ, InvalidOid,
- F_INT2EQ, F_INT2VECTOREQ, F_INT4EQ, F_OIDEQ, F_TEXTEQ,
- F_OIDEQ, InvalidOid, InvalidOid, InvalidOid, F_OIDVECTOREQ
-};
-
-#define EQPROC(SYSTEMTYPEOID) eqproc[(SYSTEMTYPEOID)-BOOLOID]
-
-
-static uint32 CatalogCacheComputeHashValue(CatCache *cache, int nkeys,
- ScanKey cur_skey);
-static uint32 CatalogCacheComputeTupleHashValue(CatCache *cache,
- HeapTuple tuple);
-#ifdef CATCACHE_STATS
-static void CatCachePrintStats(void);
-#endif
-static void CatCacheRemoveCTup(CatCache *cache, CatCTup *ct);
-static void CatCacheRemoveCList(CatCache *cache, CatCList *cl);
-static void CatalogCacheInitializeCache(CatCache *cache);
-static CatCTup *CatalogCacheCreateEntry(CatCache *cache, HeapTuple ntp,
- uint32 hashValue, Index hashIndex,
- bool negative);
-static HeapTuple build_dummy_tuple(CatCache *cache, int nkeys, ScanKey skeys);
-
-
-/*
- * internal support functions
- */
-
-static PGFunction
-GetCCHashFunc(Oid keytype)
-{
- switch (keytype)
- {
- case BOOLOID:
- case CHAROID:
- return hashchar;
- case NAMEOID:
- return hashname;
- case INT2OID:
- return hashint2;
- case INT2VECTOROID:
- return hashint2vector;
- case INT4OID:
- return hashint4;
- case TEXTOID:
- return hashvarlena;
- case OIDOID:
- case REGPROCOID:
- case REGPROCEDUREOID:
- case REGOPEROID:
- case REGOPERATOROID:
- case REGCLASSOID:
- case REGTYPEOID:
- return hashoid;
- case OIDVECTOROID:
- return hashoidvector;
- default:
- elog(FATAL, "GetCCHashFunc: type %u unsupported as catcache key",
- keytype);
- return (PGFunction) NULL;
- }
-}
-
-/*
- * CatalogCacheComputeHashValue
- *
- * Compute the hash value associated with a given set of lookup keys
- */
-static uint32
-CatalogCacheComputeHashValue(CatCache *cache, int nkeys, ScanKey cur_skey)
-{
- uint32 hashValue = 0;
-
- CACHE4_elog(DEBUG1, "CatalogCacheComputeHashValue %s %d %p",
- cache->cc_relname,
- nkeys,
- cache);
-
- switch (nkeys)
- {
- case 4:
- hashValue ^=
- DatumGetUInt32(DirectFunctionCall1(cache->cc_hashfunc[3],
- cur_skey[3].sk_argument)) << 9;
- /* FALLTHROUGH */
- case 3:
- hashValue ^=
- DatumGetUInt32(DirectFunctionCall1(cache->cc_hashfunc[2],
- cur_skey[2].sk_argument)) << 6;
- /* FALLTHROUGH */
- case 2:
- hashValue ^=
- DatumGetUInt32(DirectFunctionCall1(cache->cc_hashfunc[1],
- cur_skey[1].sk_argument)) << 3;
- /* FALLTHROUGH */
- case 1:
- hashValue ^=
- DatumGetUInt32(DirectFunctionCall1(cache->cc_hashfunc[0],
- cur_skey[0].sk_argument));
- break;
- default:
- elog(FATAL, "CCComputeHashValue: %d nkeys", nkeys);
- break;
- }
-
- return hashValue;
-}
-
-/*
- * CatalogCacheComputeTupleHashValue
- *
- * Compute the hash value associated with a given tuple to be cached
- */
-static uint32
-CatalogCacheComputeTupleHashValue(CatCache *cache, HeapTuple tuple)
-{
- ScanKeyData cur_skey[4];
- bool isNull = false;
-
- /* Copy pre-initialized overhead data for scankey */
- memcpy(cur_skey, cache->cc_skey, sizeof(cur_skey));
-
- /* Now extract key fields from tuple, insert into scankey */
- switch (cache->cc_nkeys)
- {
- case 4:
- cur_skey[3].sk_argument =
- (cache->cc_key[3] == ObjectIdAttributeNumber)
- ? ObjectIdGetDatum(tuple->t_data->t_oid)
- : fastgetattr(tuple,
- cache->cc_key[3],
- cache->cc_tupdesc,
- &isNull);
- Assert(!isNull);
- /* FALLTHROUGH */
- case 3:
- cur_skey[2].sk_argument =
- (cache->cc_key[2] == ObjectIdAttributeNumber)
- ? ObjectIdGetDatum(tuple->t_data->t_oid)
- : fastgetattr(tuple,
- cache->cc_key[2],
- cache->cc_tupdesc,
- &isNull);
- Assert(!isNull);
- /* FALLTHROUGH */
- case 2:
- cur_skey[1].sk_argument =
- (cache->cc_key[1] == ObjectIdAttributeNumber)
- ? ObjectIdGetDatum(tuple->t_data->t_oid)
- : fastgetattr(tuple,
- cache->cc_key[1],
- cache->cc_tupdesc,
- &isNull);
- Assert(!isNull);
- /* FALLTHROUGH */
- case 1:
- cur_skey[0].sk_argument =
- (cache->cc_key[0] == ObjectIdAttributeNumber)
- ? ObjectIdGetDatum(tuple->t_data->t_oid)
- : fastgetattr(tuple,
- cache->cc_key[0],
- cache->cc_tupdesc,
- &isNull);
- Assert(!isNull);
- break;
- default:
- elog(FATAL, "CCComputeTupleHashValue: %d cc_nkeys",
- cache->cc_nkeys);
- break;
- }
-
- return CatalogCacheComputeHashValue(cache, cache->cc_nkeys, cur_skey);
-}
-
-
-#ifdef CATCACHE_STATS
-
-static void
-CatCachePrintStats(void)
-{
- CatCache *cache;
- long cc_searches = 0;
- long cc_hits = 0;
- long cc_neg_hits = 0;
- long cc_newloads = 0;
- long cc_invals = 0;
- long cc_discards = 0;
- long cc_lsearches = 0;
- long cc_lhits = 0;
-
- elog(DEBUG1, "Catcache stats dump: %d/%d tuples in catcaches",
- CacheHdr->ch_ntup, CacheHdr->ch_maxtup);
-
- for (cache = CacheHdr->ch_caches; cache; cache = cache->cc_next)
- {
- if (cache->cc_ntup == 0 && cache->cc_searches == 0)
- continue; /* don't print unused caches */
- elog(DEBUG1, "Catcache %s/%s: %d tup, %ld srch, %ld+%ld=%ld hits, %ld+%ld=%ld loads, %ld invals, %ld discards, %ld lsrch, %ld lhits",
- cache->cc_relname,
- cache->cc_indname,
- cache->cc_ntup,
- cache->cc_searches,
- cache->cc_hits,
- cache->cc_neg_hits,
- cache->cc_hits + cache->cc_neg_hits,
- cache->cc_newloads,
- cache->cc_searches - cache->cc_hits - cache->cc_neg_hits - cache->cc_newloads,
- cache->cc_searches - cache->cc_hits - cache->cc_neg_hits,
- cache->cc_invals,
- cache->cc_discards,
- cache->cc_lsearches,
- cache->cc_lhits);
- cc_searches += cache->cc_searches;
- cc_hits += cache->cc_hits;
- cc_neg_hits += cache->cc_neg_hits;
- cc_newloads += cache->cc_newloads;
- cc_invals += cache->cc_invals;
- cc_discards += cache->cc_discards;
- cc_lsearches += cache->cc_lsearches;
- cc_lhits += cache->cc_lhits;
- }
- elog(DEBUG1, "Catcache totals: %d tup, %ld srch, %ld+%ld=%ld hits, %ld+%ld=%ld loads, %ld invals, %ld discards, %ld lsrch, %ld lhits",
- CacheHdr->ch_ntup,
- cc_searches,
- cc_hits,
- cc_neg_hits,
- cc_hits + cc_neg_hits,
- cc_newloads,
- cc_searches - cc_hits - cc_neg_hits - cc_newloads,
- cc_searches - cc_hits - cc_neg_hits,
- cc_invals,
- cc_discards,
- cc_lsearches,
- cc_lhits);
-}
-
-#endif /* CATCACHE_STATS */
-
-
-/*
- * CatCacheRemoveCTup
- *
- * Unlink and delete the given cache entry
- *
- * NB: if it is a member of a CatCList, the CatCList is deleted too.
- */
-static void
-CatCacheRemoveCTup(CatCache *cache, CatCTup *ct)
-{
- Assert(ct->refcount == 0);
- Assert(ct->my_cache == cache);
-
- if (ct->c_list)
- CatCacheRemoveCList(cache, ct->c_list);
-
- /* delink from linked lists */
- DLRemove(&ct->lrulist_elem);
- DLRemove(&ct->cache_elem);
-
- /* free associated tuple data */
- if (ct->tuple.t_data != NULL)
- pfree(ct->tuple.t_data);
- pfree(ct);
-
- --cache->cc_ntup;
- --CacheHdr->ch_ntup;
-}
-
-/*
- * CatCacheRemoveCList
- *
- * Unlink and delete the given cache list entry
- */
-static void
-CatCacheRemoveCList(CatCache *cache, CatCList *cl)
-{
- int i;
-
- Assert(cl->refcount == 0);
- Assert(cl->my_cache == cache);
-
- /* delink from member tuples */
- for (i = cl->n_members; --i >= 0; )
- {
- CatCTup *ct = cl->members[i];
-
- Assert(ct->c_list == cl);
- ct->c_list = NULL;
- }
-
- /* delink from linked list */
- DLRemove(&cl->cache_elem);
-
- /* free associated tuple data */
- if (cl->tuple.t_data != NULL)
- pfree(cl->tuple.t_data);
- pfree(cl);
-}
-
-
-/*
- * CatalogCacheIdInvalidate
- *
- * Invalidate entries in the specified cache, given a hash value and
- * item pointer. Positive entries are deleted if they match the item
- * pointer. Negative entries must be deleted if they match the hash
- * value (since we do not have the exact key of the tuple that's being
- * inserted). But this should only rarely result in loss of a cache
- * entry that could have been kept.
- *
- * Note that it's not very relevant whether the tuple identified by
- * the item pointer is being inserted or deleted. We don't expect to
- * find matching positive entries in the one case, and we don't expect
- * to find matching negative entries in the other; but we will do the
- * right things in any case.
- *
- * This routine is only quasi-public: it should only be used by inval.c.
- */
-void
-CatalogCacheIdInvalidate(int cacheId,
- uint32 hashValue,
- ItemPointer pointer)
-{
- CatCache *ccp;
-
- /*
- * sanity checks
- */
- Assert(ItemPointerIsValid(pointer));
- CACHE1_elog(DEBUG1, "CatalogCacheIdInvalidate: called");
-
- /*
- * inspect caches to find the proper cache
- */
- for (ccp = CacheHdr->ch_caches; ccp; ccp = ccp->cc_next)
- {
- Index hashIndex;
- Dlelem *elt,
- *nextelt;
-
- if (cacheId != ccp->id)
- continue;
-
- /*
- * We don't bother to check whether the cache has finished
- * initialization yet; if not, there will be no entries in it
- * so no problem.
- */
-
- /*
- * Invalidate *all* CatCLists in this cache; it's too hard to tell
- * which searches might still be correct, so just zap 'em all.
- */
- for (elt = DLGetHead(&ccp->cc_lists); elt; elt = nextelt)
- {
- CatCList *cl = (CatCList *) DLE_VAL(elt);
-
- nextelt = DLGetSucc(elt);
-
- if (cl->refcount > 0)
- cl->dead = true;
- else
- CatCacheRemoveCList(ccp, cl);
- }
-
- /*
- * inspect the proper hash bucket for tuple matches
- */
- hashIndex = HASH_INDEX(hashValue, ccp->cc_nbuckets);
-
- for (elt = DLGetHead(&ccp->cc_bucket[hashIndex]); elt; elt = nextelt)
- {
- CatCTup *ct = (CatCTup *) DLE_VAL(elt);
-
- nextelt = DLGetSucc(elt);
-
- if (hashValue != ct->hash_value)
- continue; /* ignore non-matching hash values */
-
- if (ct->negative ||
- ItemPointerEquals(pointer, &ct->tuple.t_self))
- {
- if (ct->refcount > 0)
- ct->dead = true;
- else
- CatCacheRemoveCTup(ccp, ct);
- CACHE1_elog(DEBUG1, "CatalogCacheIdInvalidate: invalidated");
-#ifdef CATCACHE_STATS
- ccp->cc_invals++;
-#endif
- /* could be multiple matches, so keep looking! */
- }
- }
- break; /* need only search this one cache */
- }
-}
-
-/* ----------------------------------------------------------------
- * public functions
- * ----------------------------------------------------------------
- */
-
-
-/*
- * Standard routine for creating cache context if it doesn't exist yet
- *
- * There are a lot of places (probably far more than necessary) that check
- * whether CacheMemoryContext exists yet and want to create it if not.
- * We centralize knowledge of exactly how to create it here.
- */
-void
-CreateCacheMemoryContext(void)
-{
- /*
- * Purely for paranoia, check that context doesn't exist; caller
- * probably did so already.
- */
- if (!CacheMemoryContext)
- CacheMemoryContext = AllocSetContextCreate(TopMemoryContext,
- "CacheMemoryContext",
- ALLOCSET_DEFAULT_MINSIZE,
- ALLOCSET_DEFAULT_INITSIZE,
- ALLOCSET_DEFAULT_MAXSIZE);
-}
-
-
-/*
- * AtEOXact_CatCache
- *
- * Clean up catcaches at end of transaction (either commit or abort)
- *
- * We scan the caches to reset refcounts to zero. This is of course
- * necessary in the abort case, since elog() may have interrupted routines.
- * In the commit case, any nonzero counts indicate failure to call
- * ReleaseSysCache, so we put out a notice for debugging purposes.
- */
-void
-AtEOXact_CatCache(bool isCommit)
-{
- CatCache *ccp;
- Dlelem *elt,
- *nextelt;
-
- /*
- * First clean up CatCLists
- */
- for (ccp = CacheHdr->ch_caches; ccp; ccp = ccp->cc_next)
- {
- for (elt = DLGetHead(&ccp->cc_lists); elt; elt = nextelt)
- {
- CatCList *cl = (CatCList *) DLE_VAL(elt);
-
- nextelt = DLGetSucc(elt);
-
- if (cl->refcount != 0)
- {
- if (isCommit)
- elog(WARNING, "Cache reference leak: cache %s (%d), list %p has count %d",
- ccp->cc_relname, ccp->id, cl, cl->refcount);
- cl->refcount = 0;
- }
-
- /* Clean up any now-deletable dead entries */
- if (cl->dead)
- CatCacheRemoveCList(ccp, cl);
- }
- }
-
- /*
- * Now clean up tuples; we can scan them all using the global LRU list
- */
- for (elt = DLGetHead(&CacheHdr->ch_lrulist); elt; elt = nextelt)
- {
- CatCTup *ct = (CatCTup *) DLE_VAL(elt);
-
- nextelt = DLGetSucc(elt);
-
- if (ct->refcount != 0)
- {
- if (isCommit)
- elog(WARNING, "Cache reference leak: cache %s (%d), tuple %u has count %d",
- ct->my_cache->cc_relname, ct->my_cache->id,
- ct->tuple.t_data->t_oid,
- ct->refcount);
- ct->refcount = 0;
- }
-
- /* Clean up any now-deletable dead entries */
- if (ct->dead)
- CatCacheRemoveCTup(ct->my_cache, ct);
- }
-}
-
-/*
- * ResetCatalogCache
- *
- * Reset one catalog cache to empty.
- *
- * This is not very efficient if the target cache is nearly empty.
- * However, it shouldn't need to be efficient; we don't invoke it often.
- */
-static void
-ResetCatalogCache(CatCache *cache)
-{
- Dlelem *elt,
- *nextelt;
- int i;
-
- /* Remove each list in this cache, or at least mark it dead */
- for (elt = DLGetHead(&cache->cc_lists); elt; elt = nextelt)
- {
- CatCList *cl = (CatCList *) DLE_VAL(elt);
-
- nextelt = DLGetSucc(elt);
-
- if (cl->refcount > 0)
- cl->dead = true;
- else
- CatCacheRemoveCList(cache, cl);
- }
-
- /* Remove each tuple in this cache, or at least mark it dead */
- for (i = 0; i < cache->cc_nbuckets; i++)
- {
- for (elt = DLGetHead(&cache->cc_bucket[i]); elt; elt = nextelt)
- {
- CatCTup *ct = (CatCTup *) DLE_VAL(elt);
-
- nextelt = DLGetSucc(elt);
-
- if (ct->refcount > 0)
- ct->dead = true;
- else
- CatCacheRemoveCTup(cache, ct);
-#ifdef CATCACHE_STATS
- cache->cc_invals++;
-#endif
- }
- }
-}
-
-/*
- * ResetCatalogCaches
- *
- * Reset all caches when a shared cache inval event forces it
- */
-void
-ResetCatalogCaches(void)
-{
- CatCache *cache;
-
- CACHE1_elog(DEBUG1, "ResetCatalogCaches called");
-
- for (cache = CacheHdr->ch_caches; cache; cache = cache->cc_next)
- ResetCatalogCache(cache);
-
- CACHE1_elog(DEBUG1, "end of ResetCatalogCaches call");
-}
-
-/*
- * CatalogCacheFlushRelation
- *
- * This is called by RelationFlushRelation() to clear out cached information
- * about a relation being dropped. (This could be a DROP TABLE command,
- * or a temp table being dropped at end of transaction, or a table created
- * during the current transaction that is being dropped because of abort.)
- * Remove all cache entries relevant to the specified relation OID.
- *
- * A special case occurs when relId is itself one of the cacheable system
- * tables --- although those'll never be dropped, they can get flushed from
- * the relcache (VACUUM causes this, for example). In that case we need
- * to flush all cache entries that came from that table. (At one point we
- * also tried to force re-execution of CatalogCacheInitializeCache for
- * the cache(s) on that table. This is a bad idea since it leads to all
- * kinds of trouble if a cache flush occurs while loading cache entries.
- * We now avoid the need to do it by copying cc_tupdesc out of the relcache,
- * rather than relying on the relcache to keep a tupdesc for us. Of course
- * this assumes the tupdesc of a cachable system table will not change...)
- */
-void
-CatalogCacheFlushRelation(Oid relId)
-{
- CatCache *cache;
-
- CACHE2_elog(DEBUG1, "CatalogCacheFlushRelation called for %u", relId);
-
- for (cache = CacheHdr->ch_caches; cache; cache = cache->cc_next)
- {
- int i;
-
- /* We can ignore uninitialized caches, since they must be empty */
- if (cache->cc_tupdesc == NULL)
- continue;
-
- /* Does this cache store tuples of the target relation itself? */
- if (cache->cc_tupdesc->attrs[0]->attrelid == relId)
- {
- /* Yes, so flush all its contents */
- ResetCatalogCache(cache);
- continue;
- }
-
- /* Does this cache store tuples associated with relations at all? */
- if (cache->cc_reloidattr == 0)
- continue; /* nope, leave it alone */
-
- /* Yes, scan the tuples and remove those related to relId */
- for (i = 0; i < cache->cc_nbuckets; i++)
- {
- Dlelem *elt,
- *nextelt;
-
- for (elt = DLGetHead(&cache->cc_bucket[i]); elt; elt = nextelt)
- {
- CatCTup *ct = (CatCTup *) DLE_VAL(elt);
- Oid tupRelid;
-
- nextelt = DLGetSucc(elt);
-
- /*
- * Negative entries are never considered related to a rel,
- * even if the rel is part of their lookup key.
- */
- if (ct->negative)
- continue;
-
- if (cache->cc_reloidattr == ObjectIdAttributeNumber)
- tupRelid = ct->tuple.t_data->t_oid;
- else
- {
- bool isNull;
-
- tupRelid =
- DatumGetObjectId(fastgetattr(&ct->tuple,
- cache->cc_reloidattr,
- cache->cc_tupdesc,
- &isNull));
- Assert(!isNull);
- }
-
- if (tupRelid == relId)
- {
- if (ct->refcount > 0)
- ct->dead = true;
- else
- CatCacheRemoveCTup(cache, ct);
-#ifdef CATCACHE_STATS
- cache->cc_invals++;
-#endif
- }
- }
- }
- }
-
- CACHE1_elog(DEBUG1, "end of CatalogCacheFlushRelation call");
-}
-
-/*
- * InitCatCache
- *
- * This allocates and initializes a cache for a system catalog relation.
- * Actually, the cache is only partially initialized to avoid opening the
- * relation. The relation will be opened and the rest of the cache
- * structure initialized on the first access.
- */
-#ifdef CACHEDEBUG
-#define InitCatCache_DEBUG1 \
-do { \
- elog(DEBUG1, "InitCatCache: rel=%s id=%d nkeys=%d size=%d\n", \
- cp->cc_relname, cp->id, cp->cc_nkeys, cp->cc_nbuckets); \
-} while(0)
-
-#else
-#define InitCatCache_DEBUG1
-#endif
-
-CatCache *
-InitCatCache(int id,
- const char *relname,
- const char *indname,
- int reloidattr,
- int nkeys,
- const int *key)
-{
- CatCache *cp;
- MemoryContext oldcxt;
- int i;
-
- /*
- * first switch to the cache context so our allocations do not vanish
- * at the end of a transaction
- */
- if (!CacheMemoryContext)
- CreateCacheMemoryContext();
-
- oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
-
- /*
- * if first time through, initialize the cache group header, including
- * global LRU list header
- */
- if (CacheHdr == NULL)
- {
- CacheHdr = (CatCacheHeader *) palloc(sizeof(CatCacheHeader));
- CacheHdr->ch_caches = NULL;
- CacheHdr->ch_ntup = 0;
- CacheHdr->ch_maxtup = MAXCCTUPLES;
- DLInitList(&CacheHdr->ch_lrulist);
-#ifdef CATCACHE_STATS
- on_proc_exit(CatCachePrintStats, 0);
-#endif
- }
-
- /*
- * allocate a new cache structure
- *
- * Note: we assume zeroing initializes the Dllist headers correctly
- */
- cp = (CatCache *) palloc(sizeof(CatCache) + NCCBUCKETS * sizeof(Dllist));
- MemSet((char *) cp, 0, sizeof(CatCache) + NCCBUCKETS * sizeof(Dllist));
-
- /*
- * initialize the cache's relation information for the relation
- * corresponding to this cache, and initialize some of the new cache's
- * other internal fields. But don't open the relation yet.
- */
- cp->id = id;
- cp->cc_relname = relname;
- cp->cc_indname = indname;
- cp->cc_reloid = InvalidOid; /* temporary */
- cp->cc_relisshared = false; /* temporary */
- cp->cc_tupdesc = (TupleDesc) NULL;
- cp->cc_reloidattr = reloidattr;
- cp->cc_ntup = 0;
- cp->cc_nbuckets = NCCBUCKETS;
- cp->cc_nkeys = nkeys;
- for (i = 0; i < nkeys; ++i)
- cp->cc_key[i] = key[i];
-
- /*
- * new cache is initialized as far as we can go for now. print some
- * debugging information, if appropriate.
- */
- InitCatCache_DEBUG1;
-
- /*
- * add completed cache to top of group header's list
- */
- cp->cc_next = CacheHdr->ch_caches;
- CacheHdr->ch_caches = cp;
-
- /*
- * back to the old context before we return...
- */
- MemoryContextSwitchTo(oldcxt);
-
- return cp;
-}
-
-/*
- * CatalogCacheInitializeCache
- *
- * This function does final initialization of a catcache: obtain the tuple
- * descriptor and set up the hash and equality function links. We assume
- * that the relcache entry can be opened at this point!
- */
-#ifdef CACHEDEBUG
-#define CatalogCacheInitializeCache_DEBUG1 \
- elog(DEBUG1, "CatalogCacheInitializeCache: cache @%p %s", cache, \
- cache->cc_relname)
-
-#define CatalogCacheInitializeCache_DEBUG2 \
-do { \
- if (cache->cc_key[i] > 0) { \
- elog(DEBUG1, "CatalogCacheInitializeCache: load %d/%d w/%d, %u", \
- i+1, cache->cc_nkeys, cache->cc_key[i], \
- tupdesc->attrs[cache->cc_key[i] - 1]->atttypid); \
- } else { \
- elog(DEBUG1, "CatalogCacheInitializeCache: load %d/%d w/%d", \
- i+1, cache->cc_nkeys, cache->cc_key[i]); \
- } \
-} while(0)
-
-#else
-#define CatalogCacheInitializeCache_DEBUG1
-#define CatalogCacheInitializeCache_DEBUG2
-#endif
-
-static void
-CatalogCacheInitializeCache(CatCache *cache)
-{
- Relation relation;
- MemoryContext oldcxt;
- TupleDesc tupdesc;
- int i;
-
- CatalogCacheInitializeCache_DEBUG1;
-
- /*
- * Open the relation without locking --- we only need the tupdesc,
- * which we assume will never change ...
- */
- relation = heap_openr(cache->cc_relname, NoLock);
- Assert(RelationIsValid(relation));
-
- /*
- * switch to the cache context so our allocations do not vanish at the
- * end of a transaction
- */
- Assert(CacheMemoryContext != NULL);
-
- oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
-
- /*
- * copy the relcache's tuple descriptor to permanent cache storage
- */
- tupdesc = CreateTupleDescCopyConstr(RelationGetDescr(relation));
-
- /*
- * get the relation's OID and relisshared flag, too
- */
- cache->cc_reloid = RelationGetRelid(relation);
- cache->cc_relisshared = RelationGetForm(relation)->relisshared;
-
- /*
- * return to the caller's memory context and close the rel
- */
- MemoryContextSwitchTo(oldcxt);
-
- heap_close(relation, NoLock);
-
- CACHE3_elog(DEBUG1, "CatalogCacheInitializeCache: %s, %d keys",
- cache->cc_relname, cache->cc_nkeys);
-
- /*
- * initialize cache's key information
- */
- for (i = 0; i < cache->cc_nkeys; ++i)
- {
- Oid keytype;
-
- CatalogCacheInitializeCache_DEBUG2;
-
- if (cache->cc_key[i] > 0)
- keytype = tupdesc->attrs[cache->cc_key[i] - 1]->atttypid;
- else
- {
- if (cache->cc_key[i] != ObjectIdAttributeNumber)
- elog(FATAL, "CatalogCacheInit: only sys attr supported is OID");
- keytype = OIDOID;
- }
-
- cache->cc_hashfunc[i] = GetCCHashFunc(keytype);
-
- cache->cc_isname[i] = (keytype == NAMEOID);
-
- /*
- * If GetCCHashFunc liked the type, safe to index into eqproc[]
- */
- cache->cc_skey[i].sk_procedure = EQPROC(keytype);
-
- /* Do function lookup */
- fmgr_info_cxt(cache->cc_skey[i].sk_procedure,
- &cache->cc_skey[i].sk_func,
- CacheMemoryContext);
-
- /* Initialize sk_attno suitably for HeapKeyTest() and heap scans */
- cache->cc_skey[i].sk_attno = cache->cc_key[i];
-
- CACHE4_elog(DEBUG1, "CatalogCacheInit %s %d %p",
- cache->cc_relname,
- i,
- cache);
- }
-
- /*
- * mark this cache fully initialized
- */
- cache->cc_tupdesc = tupdesc;
-}
-
-/*
- * InitCatCachePhase2 -- external interface for CatalogCacheInitializeCache
- *
- * The only reason to call this routine is to ensure that the relcache
- * has created entries for all the catalogs and indexes referenced by
- * catcaches. Therefore, open the index too. An exception is the indexes
- * on pg_am, which we don't use (cf. IndexScanOK).
- */
-void
-InitCatCachePhase2(CatCache *cache)
-{
- if (cache->cc_tupdesc == NULL)
- CatalogCacheInitializeCache(cache);
-
- if (cache->id != AMOID &&
- cache->id != AMNAME)
- {
- Relation idesc;
-
- idesc = index_openr(cache->cc_indname);
- index_close(idesc);
- }
-}
-
-
-/*
- * IndexScanOK
- *
- * This function checks for tuples that will be fetched by
- * IndexSupportInitialize() during relcache initialization for
- * certain system indexes that support critical syscaches.
- * We can't use an indexscan to fetch these, else we'll get into
- * infinite recursion. A plain heap scan will work, however.
- *
- * Once we have completed relcache initialization (signaled by
- * criticalRelcachesBuilt), we don't have to worry anymore.
- */
-static bool
-IndexScanOK(CatCache *cache, ScanKey cur_skey)
-{
- if (cache->id == INDEXRELID)
- {
- /*
- * Since the OIDs of indexes aren't hardwired, it's painful to
- * figure out which is which. Just force all pg_index searches
- * to be heap scans while building the relcaches.
- */
- if (!criticalRelcachesBuilt)
- return false;
- }
- else if (cache->id == AMOID ||
- cache->id == AMNAME)
- {
- /*
- * Always do heap scans in pg_am, because it's so small there's
- * not much point in an indexscan anyway. We *must* do this when
- * initially building critical relcache entries, but we might as
- * well just always do it.
- */
- return false;
- }
- else if (cache->id == OPEROID)
- {
- if (!criticalRelcachesBuilt)
- {
- /* Looking for an OID comparison function? */
- Oid lookup_oid = DatumGetObjectId(cur_skey[0].sk_argument);
-
- if (lookup_oid >= MIN_OIDCMP && lookup_oid <= MAX_OIDCMP)
- return false;
- }
- }
-
- /* Normal case, allow index scan */
- return true;
-}
-
-/*
- * SearchCatCache
- *
- * This call searches a system cache for a tuple, opening the relation
- * if necessary (on the first access to a particular cache).
- *
- * The result is NULL if not found, or a pointer to a HeapTuple in
- * the cache. The caller must not modify the tuple, and must call
- * ReleaseCatCache() when done with it.
- *
- * The search key values should be expressed as Datums of the key columns'
- * datatype(s). (Pass zeroes for any unused parameters.) As a special
- * exception, the passed-in key for a NAME column can be just a C string;
- * the caller need not go to the trouble of converting it to a fully
- * null-padded NAME.
- */
-HeapTuple
-SearchCatCache(CatCache *cache,
- Datum v1,
- Datum v2,
- Datum v3,
- Datum v4)
-{
- ScanKeyData cur_skey[4];
- uint32 hashValue;
- Index hashIndex;
- Dlelem *elt;
- CatCTup *ct;
- Relation relation;
- SysScanDesc scandesc;
- HeapTuple ntp;
-
- /*
- * one-time startup overhead for each cache
- */
- if (cache->cc_tupdesc == NULL)
- CatalogCacheInitializeCache(cache);
-
-#ifdef CATCACHE_STATS
- cache->cc_searches++;
-#endif
-
- /*
- * initialize the search key information
- */
- memcpy(cur_skey, cache->cc_skey, sizeof(cur_skey));
- cur_skey[0].sk_argument = v1;
- cur_skey[1].sk_argument = v2;
- cur_skey[2].sk_argument = v3;
- cur_skey[3].sk_argument = v4;
-
- /*
- * find the hash bucket in which to look for the tuple
- */
- hashValue = CatalogCacheComputeHashValue(cache, cache->cc_nkeys, cur_skey);
- hashIndex = HASH_INDEX(hashValue, cache->cc_nbuckets);
-
- /*
- * scan the hash bucket until we find a match or exhaust our tuples
- */
- for (elt = DLGetHead(&cache->cc_bucket[hashIndex]);
- elt;
- elt = DLGetSucc(elt))
- {
- bool res;
-
- ct = (CatCTup *) DLE_VAL(elt);
-
- if (ct->dead)
- continue; /* ignore dead entries */
-
- if (ct->hash_value != hashValue)
- continue; /* quickly skip entry if wrong hash val */
-
- /*
- * see if the cached tuple matches our key.
- */
- HeapKeyTest(&ct->tuple,
- cache->cc_tupdesc,
- cache->cc_nkeys,
- cur_skey,
- res);
- if (!res)
- continue;
-
- /*
- * we found a match in the cache: move it to the front of the global
- * LRU list. We also move it to the front of the list for its
- * hashbucket, in order to speed subsequent searches. (The most
- * frequently accessed elements in any hashbucket will tend to be
- * near the front of the hashbucket's list.)
- */
- DLMoveToFront(&ct->lrulist_elem);
- DLMoveToFront(&ct->cache_elem);
-
- /*
- * If it's a positive entry, bump its refcount and return it.
- * If it's negative, we can report failure to the caller.
- */
- if (!ct->negative)
- {
- ct->refcount++;
-
- CACHE3_elog(DEBUG1, "SearchCatCache(%s): found in bucket %d",
- cache->cc_relname, hashIndex);
-
-#ifdef CATCACHE_STATS
- cache->cc_hits++;
-#endif
-
- return &ct->tuple;
- }
- else
- {
- CACHE3_elog(DEBUG1, "SearchCatCache(%s): found neg entry in bucket %d",
- cache->cc_relname, hashIndex);
-
-#ifdef CATCACHE_STATS
- cache->cc_neg_hits++;
-#endif
-
- return NULL;
- }
- }
-
- /*
- * Tuple was not found in cache, so we have to try to retrieve it
- * directly from the relation. If found, we will add it to the
- * cache; if not found, we will add a negative cache entry instead.
- *
- * NOTE: it is possible for recursive cache lookups to occur while
- * reading the relation --- for example, due to shared-cache-inval
- * messages being processed during heap_open(). This is OK. It's
- * even possible for one of those lookups to find and enter the very
- * same tuple we are trying to fetch here. If that happens, we will
- * enter a second copy of the tuple into the cache. The first copy
- * will never be referenced again, and will eventually age out of the
- * cache, so there's no functional problem. This case is rare enough
- * that it's not worth expending extra cycles to detect.
- */
- relation = heap_open(cache->cc_reloid, AccessShareLock);
-
- scandesc = systable_beginscan(relation,
- cache->cc_indname,
- IndexScanOK(cache, cur_skey),
- SnapshotNow,
- cache->cc_nkeys,
- cur_skey);
-
- ct = NULL;
-
- while (HeapTupleIsValid(ntp = systable_getnext(scandesc)))
- {
- ct = CatalogCacheCreateEntry(cache, ntp,
- hashValue, hashIndex,
- false);
- break; /* assume only one match */
- }
-
- systable_endscan(scandesc);
-
- heap_close(relation, AccessShareLock);
-
- /*
- * If tuple was not found, we need to build a negative cache entry
- * containing a fake tuple. The fake tuple has the correct key columns,
- * but nulls everywhere else.
- */
- if (ct == NULL)
- {
- ntp = build_dummy_tuple(cache, cache->cc_nkeys, cur_skey);
- ct = CatalogCacheCreateEntry(cache, ntp,
- hashValue, hashIndex,
- true);
- heap_freetuple(ntp);
-
- CACHE4_elog(DEBUG1, "SearchCatCache(%s): Contains %d/%d tuples",
- cache->cc_relname, cache->cc_ntup, CacheHdr->ch_ntup);
- CACHE3_elog(DEBUG1, "SearchCatCache(%s): put neg entry in bucket %d",
- cache->cc_relname, hashIndex);
-
- /*
- * We are not returning the new entry to the caller, so reset its
- * refcount.
- */
- ct->refcount = 0; /* negative entries never have refs */
-
- return NULL;
- }
-
- CACHE4_elog(DEBUG1, "SearchCatCache(%s): Contains %d/%d tuples",
- cache->cc_relname, cache->cc_ntup, CacheHdr->ch_ntup);
- CACHE3_elog(DEBUG1, "SearchCatCache(%s): put in bucket %d",
- cache->cc_relname, hashIndex);
-
-#ifdef CATCACHE_STATS
- cache->cc_newloads++;
-#endif
-
- return &ct->tuple;
-}
-
-/*
- * ReleaseCatCache
- *
- * Decrement the reference count of a catcache entry (releasing the
- * hold grabbed by a successful SearchCatCache).
- *
- * NOTE: if compiled with -DCATCACHE_FORCE_RELEASE then catcache entries
- * will be freed as soon as their refcount goes to zero. In combination
- * with aset.c's CLOBBER_FREED_MEMORY option, this provides a good test
- * to catch references to already-released catcache entries.
- */
-void
-ReleaseCatCache(HeapTuple tuple)
-{
- CatCTup *ct = (CatCTup *) (((char *) tuple) -
- offsetof(CatCTup, tuple));
-
- /* Safety checks to ensure we were handed a cache entry */
- Assert(ct->ct_magic == CT_MAGIC);
- Assert(ct->refcount > 0);
-
- ct->refcount--;
-
- if (ct->refcount == 0
-#ifndef CATCACHE_FORCE_RELEASE
- && ct->dead
-#endif
- )
- CatCacheRemoveCTup(ct->my_cache, ct);
-}
-
-
-/*
- * SearchCatCacheList
- *
- * Generate a list of all tuples matching a partial key (that is,
- * a key specifying just the first K of the cache's N key columns).
- *
- * The caller must not modify the list object or the pointed-to tuples,
- * and must call ReleaseCatCacheList() when done with the list.
- */
-CatCList *
-SearchCatCacheList(CatCache *cache,
- int nkeys,
- Datum v1,
- Datum v2,
- Datum v3,
- Datum v4)
-{
- ScanKeyData cur_skey[4];
- uint32 lHashValue;
- Dlelem *elt;
- CatCList *cl;
- CatCTup *ct;
- List *ctlist;
- int nmembers;
- Relation relation;
- SysScanDesc scandesc;
- bool ordered;
- HeapTuple ntp;
- MemoryContext oldcxt;
- int i;
-
- /*
- * one-time startup overhead for each cache
- */
- if (cache->cc_tupdesc == NULL)
- CatalogCacheInitializeCache(cache);
-
- Assert(nkeys > 0 && nkeys < cache->cc_nkeys);
-
-#ifdef CATCACHE_STATS
- cache->cc_lsearches++;
-#endif
-
- /*
- * initialize the search key information
- */
- memcpy(cur_skey, cache->cc_skey, sizeof(cur_skey));
- cur_skey[0].sk_argument = v1;
- cur_skey[1].sk_argument = v2;
- cur_skey[2].sk_argument = v3;
- cur_skey[3].sk_argument = v4;
-
- /*
- * compute a hash value of the given keys for faster search. We don't
- * presently divide the CatCList items into buckets, but this still lets
- * us skip non-matching items quickly most of the time.
- */
- lHashValue = CatalogCacheComputeHashValue(cache, nkeys, cur_skey);
-
- /*
- * scan the items until we find a match or exhaust our list
- */
- for (elt = DLGetHead(&cache->cc_lists);
- elt;
- elt = DLGetSucc(elt))
- {
- bool res;
-
- cl = (CatCList *) DLE_VAL(elt);
-
- if (cl->dead)
- continue; /* ignore dead entries */
-
- if (cl->hash_value != lHashValue)
- continue; /* quickly skip entry if wrong hash val */
-
- /*
- * see if the cached list matches our key.
- */
- if (cl->nkeys != nkeys)
- continue;
- HeapKeyTest(&cl->tuple,
- cache->cc_tupdesc,
- nkeys,
- cur_skey,
- res);
- if (!res)
- continue;
-
- /*
- * we found a matching list: move each of its members to the front
- * of the global LRU list. Also move the list itself to the front
- * of the cache's list-of-lists, to speed subsequent searches.
- * (We do not move the members to the fronts of their hashbucket
- * lists, however, since there's no point in that unless they are
- * searched for individually.) Also bump the members' refcounts.
- */
- for (i = 0; i < cl->n_members; i++)
- {
- cl->members[i]->refcount++;
- DLMoveToFront(&cl->members[i]->lrulist_elem);
- }
- DLMoveToFront(&cl->cache_elem);
-
- /* Bump the list's refcount and return it */
- cl->refcount++;
-
- CACHE2_elog(DEBUG1, "SearchCatCacheList(%s): found list",
- cache->cc_relname);
-
-#ifdef CATCACHE_STATS
- cache->cc_lhits++;
-#endif
-
- return cl;
- }
-
- /*
- * List was not found in cache, so we have to build it by reading
- * the relation. For each matching tuple found in the relation,
- * use an existing cache entry if possible, else build a new one.
- */
- relation = heap_open(cache->cc_reloid, AccessShareLock);
-
- scandesc = systable_beginscan(relation,
- cache->cc_indname,
- true,
- SnapshotNow,
- nkeys,
- cur_skey);
-
- /* The list will be ordered iff we are doing an index scan */
- ordered = (scandesc->irel != NULL);
-
- ctlist = NIL;
- nmembers = 0;
-
- while (HeapTupleIsValid(ntp = systable_getnext(scandesc)))
- {
- uint32 hashValue;
- Index hashIndex;
-
- /*
- * See if there's an entry for this tuple already.
- */
- ct = NULL;
- hashValue = CatalogCacheComputeTupleHashValue(cache, ntp);
- hashIndex = HASH_INDEX(hashValue, cache->cc_nbuckets);
-
- for (elt = DLGetHead(&cache->cc_bucket[hashIndex]);
- elt;
- elt = DLGetSucc(elt))
- {
- ct = (CatCTup *) DLE_VAL(elt);
-
- if (ct->dead || ct->negative)
- continue; /* ignore dead and negative entries */
-
- if (ct->hash_value != hashValue)
- continue; /* quickly skip entry if wrong hash val */
-
- if (!ItemPointerEquals(&(ct->tuple.t_self), &(ntp->t_self)))
- continue; /* not same tuple */
-
- /*
- * Found a match, but can't use it if it belongs to another list
- * already
- */
- if (ct->c_list)
- continue;
-
- /* Found a match, so bump its refcount and move to front */
- ct->refcount++;
-
- DLMoveToFront(&ct->lrulist_elem);
-
- break;
- }
-
- if (elt == NULL)
- {
- /* We didn't find a usable entry, so make a new one */
- ct = CatalogCacheCreateEntry(cache, ntp,
- hashValue, hashIndex,
- false);
- }
-
- ctlist = lcons(ct, ctlist);
- nmembers++;
- }
-
- systable_endscan(scandesc);
-
- heap_close(relation, AccessShareLock);
-
- /*
- * Now we can build the CatCList entry. First we need a dummy tuple
- * containing the key values...
- */
- ntp = build_dummy_tuple(cache, nkeys, cur_skey);
- oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
- cl = (CatCList *) palloc(sizeof(CatCList) + nmembers * sizeof(CatCTup *));
- heap_copytuple_with_tuple(ntp, &cl->tuple);
- MemoryContextSwitchTo(oldcxt);
- heap_freetuple(ntp);
-
- cl->cl_magic = CL_MAGIC;
- cl->my_cache = cache;
- DLInitElem(&cl->cache_elem, (void *) cl);
- cl->refcount = 1; /* count this first reference */
- cl->dead = false;
- cl->ordered = ordered;
- cl->nkeys = nkeys;
- cl->hash_value = lHashValue;
- cl->n_members = nmembers;
- /* The list is backwards because we built it with lcons */
- for (i = nmembers; --i >= 0; )
- {
- cl->members[i] = ct = (CatCTup *) lfirst(ctlist);
- Assert(ct->c_list == NULL);
- ct->c_list = cl;
- /* mark list dead if any members already dead */
- if (ct->dead)
- cl->dead = true;
- ctlist = lnext(ctlist);
- }
-
- DLAddHead(&cache->cc_lists, &cl->cache_elem);
-
- CACHE3_elog(DEBUG1, "SearchCatCacheList(%s): made list of %d members",
- cache->cc_relname, nmembers);
-
- return cl;
-}
-
-/*
- * ReleaseCatCacheList
- *
- * Decrement the reference counts of a catcache list.
- */
-void
-ReleaseCatCacheList(CatCList *list)
-{
- int i;
-
- /* Safety checks to ensure we were handed a cache entry */
- Assert(list->cl_magic == CL_MAGIC);
- Assert(list->refcount > 0);
-
- for (i = list->n_members; --i >= 0; )
- {
- CatCTup *ct = list->members[i];
-
- Assert(ct->refcount > 0);
-
- ct->refcount--;
-
- if (ct->dead)
- list->dead = true;
- /* can't remove tuple before list is removed */
- }
-
- list->refcount--;
-
- if (list->refcount == 0
-#ifndef CATCACHE_FORCE_RELEASE
- && list->dead
-#endif
- )
- CatCacheRemoveCList(list->my_cache, list);
-}
-
-
-/*
- * CatalogCacheCreateEntry
- * Create a new CatCTup entry, copying the given HeapTuple and other
- * supplied data into it. The new entry is given refcount 1.
- */
-static CatCTup *
-CatalogCacheCreateEntry(CatCache *cache, HeapTuple ntp,
- uint32 hashValue, Index hashIndex, bool negative)
-{
- CatCTup *ct;
- MemoryContext oldcxt;
-
- /*
- * Allocate CatCTup header in cache memory, and copy the tuple there too.
- */
- oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
- ct = (CatCTup *) palloc(sizeof(CatCTup));
- heap_copytuple_with_tuple(ntp, &ct->tuple);
- MemoryContextSwitchTo(oldcxt);
-
- /*
- * Finish initializing the CatCTup header, and add it to the cache's
- * linked lists and counts.
- */
- ct->ct_magic = CT_MAGIC;
- ct->my_cache = cache;
- DLInitElem(&ct->lrulist_elem, (void *) ct);
- DLInitElem(&ct->cache_elem, (void *) ct);
- ct->c_list = NULL;
- ct->refcount = 1; /* count this first reference */
- ct->dead = false;
- ct->negative = negative;
- ct->hash_value = hashValue;
-
- DLAddHead(&CacheHdr->ch_lrulist, &ct->lrulist_elem);
- DLAddHead(&cache->cc_bucket[hashIndex], &ct->cache_elem);
-
- cache->cc_ntup++;
- CacheHdr->ch_ntup++;
-
- /*
- * If we've exceeded the desired size of the caches, try to throw away
- * the least recently used entry. NB: the newly-built entry cannot
- * get thrown away here, because it has positive refcount.
- */
- if (CacheHdr->ch_ntup > CacheHdr->ch_maxtup)
- {
- Dlelem *elt,
- *prevelt;
-
- for (elt = DLGetTail(&CacheHdr->ch_lrulist); elt; elt = prevelt)
- {
- CatCTup *oldct = (CatCTup *) DLE_VAL(elt);
-
- prevelt = DLGetPred(elt);
-
- if (oldct->refcount == 0)
- {
- CACHE2_elog(DEBUG1, "CatCacheCreateEntry(%s): Overflow, LRU removal",
- cache->cc_relname);
-#ifdef CATCACHE_STATS
- oldct->my_cache->cc_discards++;
-#endif
- CatCacheRemoveCTup(oldct->my_cache, oldct);
- if (CacheHdr->ch_ntup <= CacheHdr->ch_maxtup)
- break;
- }
- }
- }
-
- return ct;
-}
-
-/*
- * build_dummy_tuple
- * Generate a palloc'd HeapTuple that contains the specified key
- * columns, and NULLs for other columns.
- *
- * This is used to store the keys for negative cache entries and CatCList
- * entries, which don't have real tuples associated with them.
- */
-static HeapTuple
-build_dummy_tuple(CatCache *cache, int nkeys, ScanKey skeys)
-{
- HeapTuple ntp;
- TupleDesc tupDesc = cache->cc_tupdesc;
- Datum *values;
- char *nulls;
- Oid tupOid = InvalidOid;
- NameData tempNames[4];
- int i;
-
- values = (Datum *) palloc(tupDesc->natts * sizeof(Datum));
- nulls = (char *) palloc(tupDesc->natts * sizeof(char));
-
- memset(values, 0, tupDesc->natts * sizeof(Datum));
- memset(nulls, 'n', tupDesc->natts * sizeof(char));
-
- for (i = 0; i < nkeys; i++)
- {
- int attindex = cache->cc_key[i];
- Datum keyval = skeys[i].sk_argument;
-
- if (attindex > 0)
- {
- /*
- * Here we must be careful in case the caller passed a
- * C string where a NAME is wanted: convert the given
- * argument to a correctly padded NAME. Otherwise the
- * memcpy() done in heap_formtuple could fall off the
- * end of memory.
- */
- if (cache->cc_isname[i])
- {
- Name newval = &tempNames[i];
-
- namestrcpy(newval, DatumGetCString(keyval));
- keyval = NameGetDatum(newval);
- }
- values[attindex-1] = keyval;
- nulls[attindex-1] = ' ';
- }
- else
- {
- Assert(attindex == ObjectIdAttributeNumber);
- tupOid = DatumGetObjectId(keyval);
- }
- }
-
- ntp = heap_formtuple(tupDesc, values, nulls);
- ntp->t_data->t_oid = tupOid;
-
- pfree(values);
- pfree(nulls);
-
- return ntp;
-}
-
-
-/*
- * PrepareToInvalidateCacheTuple()
- *
- * This is part of a rather subtle chain of events, so pay attention:
- *
- * When a tuple is inserted or deleted, it cannot be flushed from the
- * catcaches immediately, for reasons explained at the top of cache/inval.c.
- * Instead we have to add entry(s) for the tuple to a list of pending tuple
- * invalidations that will be done at the end of the command or transaction.
- *
- * The lists of tuples that need to be flushed are kept by inval.c. This
- * routine is a helper routine for inval.c. Given a tuple belonging to
- * the specified relation, find all catcaches it could be in, compute the
- * correct hash value for each such catcache, and call the specified function
- * to record the cache id, hash value, and tuple ItemPointer in inval.c's
- * lists. CatalogCacheIdInvalidate will be called later, if appropriate,
- * using the recorded information.
- *
- * Note that it is irrelevant whether the given tuple is actually loaded
- * into the catcache at the moment. Even if it's not there now, it might
- * be by the end of the command, or there might be a matching negative entry
- * to flush --- or other backends' caches might have such entries --- so
- * we have to make list entries to flush it later.
- *
- * Also note that it's not an error if there are no catcaches for the
- * specified relation. inval.c doesn't know exactly which rels have
- * catcaches --- it will call this routine for any tuple that's in a
- * system relation.
- */
-void
-PrepareToInvalidateCacheTuple(Relation relation,
- HeapTuple tuple,
- void (*function) (int, uint32, ItemPointer, Oid))
-{
- CatCache *ccp;
- Oid reloid;
-
- CACHE1_elog(DEBUG1, "PrepareToInvalidateCacheTuple: called");
-
- /*
- * sanity checks
- */
- Assert(RelationIsValid(relation));
- Assert(HeapTupleIsValid(tuple));
- Assert(PointerIsValid(function));
- Assert(CacheHdr != NULL);
-
- reloid = RelationGetRelid(relation);
-
- /* ----------------
- * for each cache
- * if the cache contains tuples from the specified relation
- * compute the tuple's hash value in this cache,
- * and call the passed function to register the information.
- * ----------------
- */
-
- for (ccp = CacheHdr->ch_caches; ccp; ccp = ccp->cc_next)
- {
- /* Just in case cache hasn't finished initialization yet... */
- if (ccp->cc_tupdesc == NULL)
- CatalogCacheInitializeCache(ccp);
-
- if (ccp->cc_reloid != reloid)
- continue;
-
- (*function) (ccp->id,
- CatalogCacheComputeTupleHashValue(ccp, tuple),
- &tuple->t_self,
- ccp->cc_relisshared ? (Oid) 0 : MyDatabaseId);
- }
-}