Rework lwlocknames.txt to become lwlocklist.h
This way, we can fold the list of lock names to occur in
BuiltinTrancheNames instead of having its own separate array. This
saves two lines of code in GetLWTrancheName and some space in
BuiltinTrancheNames, as foreseen in commit 74a7306310, as well as
removing the need for a separate lwlocknames.c file.
We still have to build lwlocknames.h using Perl code, which initially I
wanted to avoid, but it gives us the chance to cross-check
wait_event_names.txt.
Discussion: https://postgr.es/m/202401231025.gbv4nnte5fmm@alvherre.pgsql
This commit is contained in:
Alvaro Herrera
parent
e5da0fe3c2
commit
da952b415f
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@ -110,8 +110,8 @@ $(top_builddir)/src/port/libpgport_srv.a: | submake-libpgport
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parser/gram.h: parser/gram.y
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$(MAKE) -C parser gram.h
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storage/lmgr/lwlocknames.h: storage/lmgr/generate-lwlocknames.pl storage/lmgr/lwlocknames.txt utils/activity/wait_event_names.txt
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$(MAKE) -C storage/lmgr lwlocknames.h lwlocknames.c
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storage/lmgr/lwlocknames.h: storage/lmgr/generate-lwlocknames.pl ../include/storage/lwlocklist.h utils/activity/wait_event_names.txt
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$(MAKE) -C storage/lmgr lwlocknames.h
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utils/activity/wait_event_types.h: utils/activity/generate-wait_event_types.pl utils/activity/wait_event_names.txt
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$(MAKE) -C utils/activity wait_event_types.h pgstat_wait_event.c wait_event_funcs_data.c
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@ -1,3 +1,2 @@
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/lwlocknames.c
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/lwlocknames.h
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/s_lock_test
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@ -18,7 +18,6 @@ OBJS = \
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lmgr.o \
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lock.o \
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lwlock.o \
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lwlocknames.o \
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predicate.o \
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proc.o \
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s_lock.o \
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@ -35,11 +34,7 @@ s_lock_test: s_lock.c $(top_builddir)/src/common/libpgcommon.a $(top_builddir)/s
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$(TASPATH) -L $(top_builddir)/src/common -lpgcommon \
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-L $(top_builddir)/src/port -lpgport -lm -o s_lock_test
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# see notes in src/backend/parser/Makefile
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lwlocknames.c: lwlocknames.h
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touch $@
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lwlocknames.h: $(top_srcdir)/src/backend/storage/lmgr/lwlocknames.txt $(top_srcdir)/src/backend/utils/activity/wait_event_names.txt generate-lwlocknames.pl
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lwlocknames.h: ../../../include/storage/lwlocklist.h ../../utils/activity/wait_event_names.txt generate-lwlocknames.pl
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$(PERL) $(srcdir)/generate-lwlocknames.pl $^
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check: s_lock_test
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@ -47,4 +42,4 @@ check: s_lock_test
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clean:
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rm -f s_lock_test
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rm -f lwlocknames.h lwlocknames.c
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rm -f lwlocknames.h
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@ -1,6 +1,6 @@
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#!/usr/bin/perl
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#
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# Generate lwlocknames.h and lwlocknames.c from lwlocknames.txt
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# Generate lwlocknames.h from lwlocklist.h
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# Copyright (c) 2000-2024, PostgreSQL Global Development Group
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use strict;
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@ -14,26 +14,22 @@ my $continue = "\n";
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GetOptions('outdir:s' => \$output_path);
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open my $lwlocknames, '<', $ARGV[0] or die;
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open my $lwlocklist, '<', $ARGV[0] or die;
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open my $wait_event_names, '<', $ARGV[1] or die;
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# Include PID in suffix in case parallel make runs this multiple times.
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my $htmp = "$output_path/lwlocknames.h.tmp$$";
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my $ctmp = "$output_path/lwlocknames.c.tmp$$";
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open my $h, '>', $htmp or die "Could not open $htmp: $!";
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open my $c, '>', $ctmp or die "Could not open $ctmp: $!";
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my $autogen =
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"/* autogenerated from src/backend/storage/lmgr/lwlocknames.txt, do not edit */\n";
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"/* autogenerated from src/include/storage/lwlocklist.h, do not edit */\n";
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print $h $autogen;
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print $h "/* there is deliberately not an #ifndef LWLOCKNAMES_H here */\n\n";
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print $c $autogen, "\n";
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print $c "const char *const IndividualLWLockNames[] = {";
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#
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# First, record the predefined LWLocks listed in wait_event_names.txt. We'll
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# cross-check those with the ones in lwlocknames.txt.
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# cross-check those with the ones in lwlocklist.h.
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#
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my @wait_event_lwlocks;
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my $record_lwlocks = 0;
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@ -61,66 +57,70 @@ while (<$wait_event_names>)
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# Record the LWLock.
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(my $waiteventname, my $waitevendocsentence) = split(/\t/, $_);
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push(@wait_event_lwlocks, $waiteventname . "Lock");
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push(@wait_event_lwlocks, $waiteventname);
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}
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my $in_comment = 0;
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my $i = 0;
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while (<$lwlocknames>)
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while (<$lwlocklist>)
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{
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chomp;
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# Skip comments
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next if /^#/;
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# Skip single-line C comments and empty lines
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next if m{^\s*/\*.*\*/$};
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next if /^\s*$/;
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die "unable to parse lwlocknames.txt"
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unless /^(\w+)\s+(\d+)$/;
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# skip multiline C comments
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if ($in_comment == 1)
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{
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$in_comment = 0 if m{\*/};
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next;
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}
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elsif (m{^\s*/\*})
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{
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$in_comment = 1;
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next;
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}
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(my $lockname, my $lockidx) = ($1, $2);
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die "unable to parse lwlocklist.h line \"$_\""
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unless /^PG_LWLOCK\((\d+),\s+(\w+)\)$/;
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my $trimmedlockname = $lockname;
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$trimmedlockname =~ s/Lock$//;
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die "lock names must end with 'Lock'" if $trimmedlockname eq $lockname;
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(my $lockidx, my $lockname) = ($1, $2);
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die "lwlocknames.txt not in order" if $lockidx < $lastlockidx;
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die "lwlocknames.txt has duplicates" if $lockidx == $lastlockidx;
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die "lwlocklist.h not in order" if $lockidx < $lastlockidx;
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die "lwlocklist.h has duplicates" if $lockidx == $lastlockidx;
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die "$lockname defined in lwlocknames.txt but missing from "
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die "$lockname defined in lwlocklist.h but missing from "
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. "wait_event_names.txt"
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if $i >= scalar @wait_event_lwlocks;
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die "lists of predefined LWLocks do not match (first mismatch at "
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. "$wait_event_lwlocks[$i] in wait_event_names.txt and $lockname in "
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. "lwlocknames.txt)"
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. "lwlocklist.h)"
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if $wait_event_lwlocks[$i] ne $lockname;
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$i++;
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while ($lastlockidx < $lockidx - 1)
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{
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++$lastlockidx;
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printf $c "%s \"<unassigned:%d>\"", $continue, $lastlockidx;
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$continue = ",\n";
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}
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printf $c "%s \"%s\"", $continue, $trimmedlockname;
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$lastlockidx = $lockidx;
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$continue = ",\n";
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print $h "#define $lockname (&MainLWLockArray[$lockidx].lock)\n";
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print $h "#define ${lockname}Lock (&MainLWLockArray[$lockidx].lock)\n";
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}
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die
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"$wait_event_lwlocks[$i] defined in wait_event_names.txt but missing from "
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. "lwlocknames.txt"
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. "lwlocklist.h"
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if $i < scalar @wait_event_lwlocks;
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printf $c "\n};\n";
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print $h "\n";
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printf $h "#define NUM_INDIVIDUAL_LWLOCKS %s\n", $lastlockidx + 1;
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close $h;
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close $c;
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rename($htmp, "$output_path/lwlocknames.h")
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|| die "rename: $htmp to $output_path/lwlocknames.h: $!";
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rename($ctmp, "$output_path/lwlocknames.c") || die "rename: $ctmp: $!";
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close $lwlocknames;
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close $lwlocklist;
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@ -112,8 +112,8 @@ StaticAssertDecl(LW_VAL_EXCLUSIVE > (uint32) MAX_BACKENDS,
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* There are three sorts of LWLock "tranches":
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*
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* 1. The individually-named locks defined in lwlocknames.h each have their
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* own tranche. The names of these tranches appear in IndividualLWLockNames[]
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* in lwlocknames.c.
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* own tranche. We absorb the names of these tranches from there into
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* BuiltinTrancheNames here.
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*
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* 2. There are some predefined tranches for built-in groups of locks.
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* These are listed in enum BuiltinTrancheIds in lwlock.h, and their names
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@ -126,9 +126,10 @@ StaticAssertDecl(LW_VAL_EXCLUSIVE > (uint32) MAX_BACKENDS,
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* All these names are user-visible as wait event names, so choose with care
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* ... and do not forget to update the documentation's list of wait events.
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*/
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extern const char *const IndividualLWLockNames[]; /* in lwlocknames.c */
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static const char *const BuiltinTrancheNames[] = {
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#define PG_LWLOCK(id, lockname) [id] = CppAsString(lockname) "Lock",
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#include "storage/lwlocklist.h"
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#undef PG_LWLOCK
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[LWTRANCHE_XACT_BUFFER] = "XactBuffer",
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[LWTRANCHE_COMMITTS_BUFFER] = "CommitTsBuffer",
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[LWTRANCHE_SUBTRANS_BUFFER] = "SubtransBuffer",
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@ -742,11 +743,7 @@ LWLockReportWaitEnd(void)
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static const char *
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GetLWTrancheName(uint16 trancheId)
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{
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/* Individual LWLock? */
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if (trancheId < NUM_INDIVIDUAL_LWLOCKS)
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return IndividualLWLockNames[trancheId];
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/* Built-in tranche? */
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/* Built-in tranche or individual LWLock? */
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if (trancheId < LWTRANCHE_FIRST_USER_DEFINED)
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return BuiltinTrancheNames[trancheId];
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@ -1,60 +0,0 @@
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# Some commonly-used locks have predefined positions within MainLWLockArray;
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# these are defined here. If you add a lock, add it to the end to avoid
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# renumbering the existing locks; if you remove a lock, consider leaving a gap
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# in the numbering sequence for the benefit of DTrace and other external
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# debugging scripts. Also, do not forget to update the section
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# WaitEventLWLock of src/backend/utils/activity/wait_event_names.txt.
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# 0 is available; was formerly BufFreelistLock
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ShmemIndexLock 1
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OidGenLock 2
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XidGenLock 3
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ProcArrayLock 4
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SInvalReadLock 5
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SInvalWriteLock 6
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WALBufMappingLock 7
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WALWriteLock 8
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ControlFileLock 9
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# 10 was CheckpointLock
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# 11 was XactSLRULock
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# 12 was SubtransSLRULock
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MultiXactGenLock 13
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# 14 was MultiXactOffsetSLRULock
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# 15 was MultiXactMemberSLRULock
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RelCacheInitLock 16
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CheckpointerCommLock 17
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TwoPhaseStateLock 18
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TablespaceCreateLock 19
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BtreeVacuumLock 20
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AddinShmemInitLock 21
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AutovacuumLock 22
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AutovacuumScheduleLock 23
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SyncScanLock 24
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RelationMappingLock 25
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#26 was NotifySLRULock
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NotifyQueueLock 27
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SerializableXactHashLock 28
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SerializableFinishedListLock 29
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SerializablePredicateListLock 30
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# 31 was SerialSLRULock
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SyncRepLock 32
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BackgroundWorkerLock 33
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DynamicSharedMemoryControlLock 34
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AutoFileLock 35
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ReplicationSlotAllocationLock 36
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ReplicationSlotControlLock 37
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#38 was CommitTsSLRULock
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CommitTsLock 39
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ReplicationOriginLock 40
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MultiXactTruncationLock 41
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# 42 was OldSnapshotTimeMapLock
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LogicalRepWorkerLock 43
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XactTruncationLock 44
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# 45 was XactTruncationLock until removal of BackendRandomLock
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WrapLimitsVacuumLock 46
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NotifyQueueTailLock 47
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WaitEventExtensionLock 48
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WALSummarizerLock 49
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DSMRegistryLock 50
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InjectionPointLock 51
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SerialControlLock 52
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@ -11,5 +11,3 @@ backend_sources += files(
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's_lock.c',
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'spin.c',
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)
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generated_backend_sources += lwlocknames[1]
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|
|
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@ -280,9 +280,9 @@ Extension "Waiting in an extension."
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# This class of wait events has its own set of C structure, so these are
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# only used for the documentation.
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#
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# NB: Predefined LWLocks (i.e., those declared in lwlocknames.txt) must be
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# NB: Predefined LWLocks (i.e., those declared in lwlocklist.h) must be
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# listed in the top section of locks and must be listed in the same order as in
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# lwlocknames.txt.
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# lwlocklist.h.
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#
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Section: ClassName - WaitEventLWLock
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|
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@ -333,9 +333,9 @@ SerialControl "Waiting to read or update shared <filename>pg_serial</filename> s
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#
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# END OF PREDEFINED LWLOCKS (DO NOT CHANGE THIS LINE)
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#
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# Predefined LWLocks (i.e., those declared in lwlocknames.txt) must be listed
|
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# Predefined LWLocks (i.e., those declared in lwlocknames.h) must be listed
|
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# in the section above and must be listed in the same order as in
|
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# lwlocknames.txt. Other LWLocks must be listed in the section below.
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# lwlocknames.h. Other LWLocks must be listed in the section below.
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#
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XactBuffer "Waiting for I/O on a transaction status SLRU buffer."
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|
|
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|
@ -19,6 +19,7 @@
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#endif
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|
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#include "port/atomics.h"
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#include "storage/lwlocknames.h"
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#include "storage/proclist_types.h"
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|
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struct PGPROC;
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|
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@ -82,9 +83,6 @@ typedef struct NamedLWLockTranche
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extern PGDLLIMPORT NamedLWLockTranche *NamedLWLockTrancheArray;
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extern PGDLLIMPORT int NamedLWLockTrancheRequests;
|
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|
||||
/* Names for fixed lwlocks */
|
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#include "storage/lwlocknames.h"
|
||||
|
||||
/*
|
||||
* It's a bit odd to declare NUM_BUFFER_PARTITIONS and NUM_LOCK_PARTITIONS
|
||||
* here, but we need them to figure out offsets within MainLWLockArray, and
|
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|
|
|
|||
|
|
@ -0,0 +1,85 @@
|
|||
/*-------------------------------------------------------------------------
|
||||
*
|
||||
* lwlocklist.h
|
||||
*
|
||||
* The predefined LWLock list is kept in its own source file for use by
|
||||
* automatic tools. The exact representation of a keyword is determined by
|
||||
* the PG_LWLOCK macro, which is not defined in this file; it can be
|
||||
* defined by the caller for special purposes.
|
||||
*
|
||||
* Also, generate-lwlocknames.pl processes this file to create lwlocknames.h.
|
||||
*
|
||||
* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* src/include/storage/lwlocklist.h
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
/*
|
||||
* Some commonly-used locks have predefined positions within MainLWLockArray;
|
||||
* these are defined here. If you add a lock, add it to the end to avoid
|
||||
* renumbering the existing locks; if you remove a lock, consider leaving a gap
|
||||
* in the numbering sequence for the benefit of DTrace and other external
|
||||
* debugging scripts. Also, do not forget to update the section
|
||||
* WaitEventLWLock of src/backend/utils/activity/wait_event_names.txt.
|
||||
*
|
||||
* Note that the names here don't include the Lock suffix, to appease the
|
||||
* C preprocessor; it's added elsewhere.
|
||||
*/
|
||||
|
||||
/* 0 is available; was formerly BufFreelistLock */
|
||||
PG_LWLOCK(1, ShmemIndex)
|
||||
PG_LWLOCK(2, OidGen)
|
||||
PG_LWLOCK(3, XidGen)
|
||||
PG_LWLOCK(4, ProcArray)
|
||||
PG_LWLOCK(5, SInvalRead)
|
||||
PG_LWLOCK(6, SInvalWrite)
|
||||
PG_LWLOCK(7, WALBufMapping)
|
||||
PG_LWLOCK(8, WALWrite)
|
||||
PG_LWLOCK(9, ControlFile)
|
||||
/* 10 was CheckpointLock */
|
||||
/* 11 was XactSLRULock */
|
||||
/* 12 was SubtransSLRULock */
|
||||
PG_LWLOCK(13, MultiXactGen)
|
||||
/* 14 was MultiXactOffsetSLRULock */
|
||||
/* 15 was MultiXactMemberSLRULock */
|
||||
PG_LWLOCK(16, RelCacheInit)
|
||||
PG_LWLOCK(17, CheckpointerComm)
|
||||
PG_LWLOCK(18, TwoPhaseState)
|
||||
PG_LWLOCK(19, TablespaceCreate)
|
||||
PG_LWLOCK(20, BtreeVacuum)
|
||||
PG_LWLOCK(21, AddinShmemInit)
|
||||
PG_LWLOCK(22, Autovacuum)
|
||||
PG_LWLOCK(23, AutovacuumSchedule)
|
||||
PG_LWLOCK(24, SyncScan)
|
||||
PG_LWLOCK(25, RelationMapping)
|
||||
/* 26 was NotifySLRULock */
|
||||
PG_LWLOCK(27, NotifyQueue)
|
||||
PG_LWLOCK(28, SerializableXactHash)
|
||||
PG_LWLOCK(29, SerializableFinishedList)
|
||||
PG_LWLOCK(30, SerializablePredicateList)
|
||||
/* 31 was SerialSLRULock */
|
||||
PG_LWLOCK(32, SyncRep)
|
||||
PG_LWLOCK(33, BackgroundWorker)
|
||||
PG_LWLOCK(34, DynamicSharedMemoryControl)
|
||||
PG_LWLOCK(35, AutoFile)
|
||||
PG_LWLOCK(36, ReplicationSlotAllocation)
|
||||
PG_LWLOCK(37, ReplicationSlotControl)
|
||||
/* 38 was CommitTsSLRULock */
|
||||
PG_LWLOCK(39, CommitTs)
|
||||
PG_LWLOCK(40, ReplicationOrigin)
|
||||
PG_LWLOCK(41, MultiXactTruncation)
|
||||
/* 42 was OldSnapshotTimeMapLock */
|
||||
PG_LWLOCK(43, LogicalRepWorker)
|
||||
PG_LWLOCK(44, XactTruncation)
|
||||
/* 45 was XactTruncationLock until removal of BackendRandomLock */
|
||||
PG_LWLOCK(46, WrapLimitsVacuum)
|
||||
PG_LWLOCK(47, NotifyQueueTail)
|
||||
PG_LWLOCK(48, WaitEventExtension)
|
||||
PG_LWLOCK(49, WALSummarizer)
|
||||
PG_LWLOCK(50, DSMRegistry)
|
||||
PG_LWLOCK(51, InjectionPoint)
|
||||
PG_LWLOCK(52, SerialControl)
|
||||
|
|
@ -1,10 +1,10 @@
|
|||
# Copyright (c) 2022-2024, PostgreSQL Global Development Group
|
||||
|
||||
lwlocknames = custom_target('lwlocknames',
|
||||
lwlocknames_h = custom_target('lwlocknames_h',
|
||||
input: files(
|
||||
'../../backend/storage/lmgr/lwlocknames.txt',
|
||||
'../../include/storage/lwlocklist.h',
|
||||
'../../backend/utils/activity/wait_event_names.txt'),
|
||||
output: ['lwlocknames.h', 'lwlocknames.c'],
|
||||
output: ['lwlocknames.h'],
|
||||
command: [
|
||||
perl, files('../../backend/storage/lmgr/generate-lwlocknames.pl'),
|
||||
'-o', '@OUTDIR@',
|
||||
|
|
@ -12,12 +12,10 @@ lwlocknames = custom_target('lwlocknames',
|
|||
],
|
||||
build_by_default: true,
|
||||
install: true,
|
||||
install_dir: [dir_include_server / 'storage', false],
|
||||
install_dir: dir_include_server / 'storage',
|
||||
)
|
||||
|
||||
lwlocknames_h = lwlocknames[0]
|
||||
|
||||
generated_backend_headers += lwlocknames_h
|
||||
|
||||
# autoconf generates the file there, ensure we get a conflict
|
||||
generated_sources_ac += {'src/backend/storage/lmgr': ['lwlocknames.c', 'lwlocknames.h']}
|
||||
generated_sources_ac += {'src/backend/storage/lmgr': ['lwlocknames.h']}
|
||||
|
|
|
|||
|
|
@ -133,6 +133,7 @@ do
|
|||
test "$f" = src/interfaces/ecpg/preproc/c_kwlist.h && continue
|
||||
test "$f" = src/interfaces/ecpg/preproc/ecpg_kwlist.h && continue
|
||||
test "$f" = src/include/regex/regerrs.h && continue
|
||||
test "$f" = src/include/storage/lwlocklist.h && continue
|
||||
test "$f" = src/include/tcop/cmdtaglist.h && continue
|
||||
test "$f" = src/pl/plpgsql/src/plerrcodes.h && continue
|
||||
test "$f" = src/pl/plpython/spiexceptions.h && continue
|
||||
|
|
|
|||
Loading…
Reference in New Issue