Start re-transformation as soon as possible in TokenAccumulator._returnTokens

to maximize IO concurrency. Signal that all tokens are fully transformed to
callbacks called from TokenAccumulator._returnTokens. The result should be a
single re-transformation when entering the callback chain, and only if the
transform does not signal that it took care of full transformation itself.
Template expansion would set this flag, as the nested transform pipeline
processes all tokens to the end of phase async12.
This commit is contained in:
Gabriel Wicke 2012-03-07 16:29:06 +00:00
parent 656524dbbc
commit e5a1116817
Notes: Gabriel Wicke 2012-03-07 16:29:06 +00:00

View file

@ -458,11 +458,6 @@ AsyncTokenTransformManager.prototype.onChunk = function ( tokens ) {
this.tailAccumulator = res.async;
this.tokenCB = res.async.getParentCB ( 'sibling' );
}
// The next processed chunk should call back as a sibling to last
// accumulator, if any.
//if ( res.async ) {
//}
};
/**
@ -952,21 +947,36 @@ TokenAccumulator.prototype.getParentCB = function ( reference ) {
*/
TokenAccumulator.prototype._returnTokens =
function ( reference, tokens, notYetDone, allTokensProcessed ) {
var res,
cb,
var cb,
returnTokens = [];
if ( ! notYetDone ) {
this.outstanding--;
}
//console.warn( 'TokenAccumulator._returnTokens' );
if ( reference === 'child' ) {
tokens = tokens.concat( this.accum );
var res = {};
if( !allTokensProcessed ) {
// There might be transformations missing on the returned tokens,
// re-transform to make sure those are applied too.
res = this.manager.transformTokens( tokens, this.parentCB );
tokens = res.tokens;
}
if ( !notYetDone ) {
// empty accum too
tokens = tokens.concat( this.accum );
this.accum = [];
}
this.manager.env.dp( 'TokenAccumulator._returnTokens child: ',
tokens, ' outstanding: ', this.outstanding );
this.accum = [];
this.parentCB( tokens, this.outstanding );
this.parentCB( tokens, this.outstanding, true );
if ( res.async ) {
this.parentCB = res.async.getParentCB( 'sibling' );
}
return null;
} else {
// sibling
@ -977,7 +987,7 @@ TokenAccumulator.prototype._returnTokens =
this.manager.env.dp( 'TokenAccumulator._returnTokens: ',
'sibling done and parentCB ',
tokens );
this.parentCB( tokens, false );
this.parentCB( tokens, false, true );
return null;
} else if ( this.outstanding === 1 && notYetDone ) {
this.manager.env.dp( 'TokenAccumulator._returnTokens: ',
@ -987,7 +997,7 @@ TokenAccumulator.prototype._returnTokens =
// allow the sibling to go direct, and call back parent with
// tokens. The internal accumulator is empty at this stage, as its
// tokens are passed to the parent when the child is done.
return this.parentCB( tokens, true);
return this.parentCB( tokens, true, true);
} else {
this.accum = this.accum.concat( tokens );
this.manager.env.dp( 'TokenAccumulator._returnTokens: sibling done, but not overall. notYetDone=',