# Copyright (C) 2018 all contributors # License: AGPL-3.0+ package PublicInbox::SearchIdxPart; use strict; use warnings; use base qw(PublicInbox::SearchIdx); sub new { my ($class, $v2writable, $part) = @_; my $self = $class->SUPER::new($v2writable->{-inbox}, 1, $part); # create the DB before forking: $self->_xdb_acquire; $self->_xdb_release; $self->spawn_worker($v2writable, $part) if $v2writable->{parallel}; $self; } sub spawn_worker { my ($self, $v2writable, $part) = @_; my ($r, $w); pipe($r, $w) or die "pipe failed: $!\n"; binmode $r, ':raw'; binmode $w, ':raw'; my $pid = fork; defined $pid or die "fork failed: $!\n"; if ($pid == 0) { my $bnote = $v2writable->atfork_child; $v2writable = undef; close $w or die "failed to close: $!"; # F_SETPIPE_SZ = 1031 on Linux; increasing the pipe size here # speeds V2Writable batch imports across 8 cores by nearly 20% fcntl($r, 1031, 1048576) if $^O eq 'linux'; eval { partition_worker_loop($self, $r, $part, $bnote) }; die "worker $part died: $@\n" if $@; die "unexpected MM $self->{mm}" if $self->{mm}; exit; } $self->{pid} = $pid; $self->{w} = $w; close $r or die "failed to close: $!"; } sub partition_worker_loop ($$$$) { my ($self, $r, $part, $bnote) = @_; $0 = "pi-v2-partition[$part]"; $self->begin_txn_lazy; while (my $line = $r->getline) { if ($line eq "commit\n") { $self->commit_txn_lazy; } elsif ($line eq "close\n") { $self->_xdb_release; } elsif ($line eq "barrier\n") { $self->commit_txn_lazy; # no need to lock < 512 bytes is atomic under POSIX print $bnote "barrier $part\n" or die "write failed for barrier $!\n"; } elsif ($line =~ /\AD ([a-f0-9]{40,}) (.+)\n\z/s) { my ($oid, $mid) = ($1, $2); $self->begin_txn_lazy; $self->remove_by_oid($oid, $mid); } else { chomp $line; my ($len, $artnum, $oid, $mid0) = split(/ /, $line); $self->begin_txn_lazy; my $n = read($r, my $msg, $len) or die "read: $!\n"; $n == $len or die "short read: $n != $len\n"; my $mime = PublicInbox::MIME->new(\$msg); $artnum = int($artnum); $self->add_message($mime, $n, $artnum, $oid, $mid0); } } $self->worker_done; } # called by V2Writable sub index_raw { my ($self, $bytes, $msgref, $artnum, $oid, $mid0, $mime) = @_; if (my $w = $self->{w}) { print $w "$bytes $artnum $oid $mid0\n", $$msgref or die "failed to write partition $!\n"; $w->flush or die "failed to flush: $!\n"; } else { $$msgref = undef; $self->begin_txn_lazy; $self->add_message($mime, $bytes, $artnum, $oid, $mid0); } } sub atfork_child { close $_[0]->{w} or die "failed to close write pipe: $!\n"; } # called by V2Writable: sub remote_barrier { my ($self) = @_; if (my $w = $self->{w}) { print $w "barrier\n" or die "failed to print: $!"; $w->flush or die "failed to flush: $!"; } else { $self->commit_txn_lazy; } } 1;