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# $Id: Prima.pm,v 1.7 2010/03/24 21:59:53 dk Exp $ |
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# Prima event loop bridge for POE::Kernel. |
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package POE::Loop::Prima; |
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88107
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use strict; |
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use warnings; |
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our $VERSION = '1.03'; |
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# Include common signal handling. |
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use POE; |
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use POE::Loop::PerlSignals; |
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package POE::Kernel; |
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use strict; |
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use warnings; |
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no warnings 'redefine'; |
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use Prima; |
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my $_watcher_timer; |
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my @fileno_watcher; |
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#------------------------------------------------------------------------------ |
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# Loop construction and destruction. |
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sub loop_initialize |
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{ |
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$::application = Prima::Application-> create() |
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unless $::application; |
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} |
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sub loop_finalize |
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{ |
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my $self = shift; |
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undef $_watcher_timer; |
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foreach my $fd (0..$#fileno_watcher) { |
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next unless defined $fileno_watcher[$fd]; |
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foreach my $mode (MODE_RD, MODE_WR, MODE_EX) { |
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POE::Kernel::_warn( |
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"Mode $mode watcher for fileno $fd is defined during loop finalize" |
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) if defined $fileno_watcher[$fd]->[$mode]; |
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} |
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} |
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if ( $::application) { |
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$::application-> destroy; |
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undef $::application; |
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} |
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$self-> loop_ignore_all_signals(); |
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} |
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#------------------------------------------------------------------------------ |
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# Signal handler maintenance functions. |
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# This function sets us up a signal when whichever window is passed to |
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# it closes. |
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sub loop_attach_uidestroy |
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{ |
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my ( $self, $window) = @_; |
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$window-> onDestroy( sub { |
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return unless $self-> _data_ses_count(); |
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$self-> _dispatch_event( |
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$self, $self, |
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EN_SIGNAL, ET_SIGNAL, [ 'UIDESTROY' ], |
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__FILE__, __LINE__, time(), -__LINE__ |
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); |
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return 0; |
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} ); |
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} |
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#------------------------------------------------------------------------------ |
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# Maintain time watchers. |
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my $last_time = time(); |
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sub _loop_event_callback |
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{ |
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my $self = $poe_kernel; |
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if ( TRACE_STATISTICS) { |
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$self-> _data_stat_add('idle_seconds', time() - $last_time); |
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$last_time = time(); |
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} |
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$self->_data_ev_dispatch_due(); |
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$self->_test_if_kernel_is_idle(); |
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$_watcher_timer-> stop; |
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# Return false to stop. |
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return 0; |
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} |
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sub loop_pause_time_watcher |
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{ |
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$_watcher_timer-> stop if $_watcher_timer; |
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} |
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sub loop_resume_time_watcher |
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{ |
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my ($self, $next_time) = @_; |
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$next_time -= time(); |
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$next_time *= 1000; |
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$next_time = 0 if $next_time < 0; |
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$_watcher_timer = Prima::Timer-> new( |
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owner => $::application, |
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onTick => \&_loop_event_callback, |
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) unless $_watcher_timer; |
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$_watcher_timer-> stop; |
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$_watcher_timer-> timeout( $next_time); |
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$_watcher_timer-> start; |
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} |
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*loop_reset_time_watcher = \&loop_resume_time_watcher; |
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#------------------------------------------------------------------------------ |
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# Maintain filehandle watchers. |
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my %mask = ( |
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MODE_RD , [ fe::Read, 'onRead' ], |
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MODE_WR , [ fe::Write, 'onWrite' ], |
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MODE_EX , [ fe::Exception, 'onException' ], |
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); |
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sub _loop_select_callback |
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{ |
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my ( $self, $obj) = ( $poe_kernel, @_ ); |
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if (TRACE_FILES) { |
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POE::Kernel::_warn " got $mask{$obj->{mode}}->[1] callback for " . $obj-> file; |
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} |
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142
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$self-> _data_handle_enqueue_ready( $obj->{mode}, $obj-> {fileno} ); |
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$self-> _test_if_kernel_is_idle(); |
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# Return false to stop |
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return 0; |
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} |
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sub loop_watch_filehandle |
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{ |
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my ($self, $handle, $mode) = @_; |
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153
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my $fileno = fileno($handle); |
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my $mask = $mask{ $mode }; |
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die "Bad mode $mode" unless defined $mask; |
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# Overwriting a pre-existing watcher? |
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if (defined $fileno_watcher[$fileno]->[$mode]) { |
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$fileno_watcher[$fileno]->[$mode]-> destroy; |
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undef $fileno_watcher[$fileno]->[$mode]; |
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} |
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163
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if (TRACE_FILES) { |
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POE::Kernel::_warn " new file $handle in mode $mode"; |
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} |
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167
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# Register the new watcher. |
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my $obj = Prima::File-> new( |
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owner => $::application, |
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file => $handle, |
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mask => $mask-> [0], |
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$mask-> [1] => \&_loop_select_callback, |
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); |
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$obj-> {mode} = $mode; |
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$obj-> {fileno} = $fileno; |
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178
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$fileno_watcher[$fileno]->[$mode] = $obj; |
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} |
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181
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*loop_resume_filehandle = \&loop_watch_filehandle; |
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183
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sub loop_ignore_filehandle |
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{ |
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my ($self, $handle, $mode) = @_; |
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my $fileno = fileno($handle); |
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188
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if (TRACE_FILES) { |
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POE::Kernel::_warn " destroy file $handle in mode $mode"; |
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} |
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192
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if (defined $fileno_watcher[$fileno]->[$mode]) { |
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$fileno_watcher[$fileno]->[$mode]-> destroy; |
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undef $fileno_watcher[$fileno]->[$mode]; |
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} |
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} |
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198
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*loop_pause_filehandle = \&loop_ignore_filehandle; |
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200
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#------------------------------------------------------------------------------ |
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# The event loop itself. |
202
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203
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sub loop_do_timeslice |
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{ |
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my $self = shift; |
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207
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# Check for a hung kernel. |
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$self-> _test_if_kernel_is_idle(); |
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210
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my $now = time if TRACE_STATISTICS; |
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212
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$::application-> yield() if $::application; |
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214
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$self-> _data_stat_add('idle_seconds', time - $now) if TRACE_STATISTICS; |
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216
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# Dispatch whatever events are due. Update the next dispatch time. |
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$self-> _data_ev_dispatch_due(); |
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} |
219
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220
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sub loop_run |
221
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{ |
222
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my $self = shift; |
223
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224
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# Run for as long as there are sessions to service. |
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while ($self->_data_ses_count()) { |
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$self->loop_do_timeslice(); |
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} |
228
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} |
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230
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|
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sub loop_halt {} |
231
|
|
|
|
|
|
|
|
232
|
|
|
|
|
|
|
sub skip_tests |
233
|
|
|
|
|
|
|
{ |
234
|
|
|
|
|
|
|
return "Prima tests require the Prima module" |
235
|
|
|
|
|
|
|
if do { eval "use Prima"; $@ }; |
236
|
|
|
|
|
|
|
} |
237
|
|
|
|
|
|
|
|
238
|
|
|
|
|
|
|
1; |
239
|
|
|
|
|
|
|
|
240
|
|
|
|
|
|
|
__END__ |