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Convert diff dividend to bignum only on init.

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This commit is contained in:
Matthew Little 2014-02-21 23:09:02 -07:00
parent b26312cf73
commit 69feb04da1
1 changed files with 4 additions and 15 deletions
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19
lib/jobManager.js
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@ -55,7 +55,7 @@ var JobManager = module.exports = function JobManager(options){
var _this = this; var _this = this;
var jobCounter = new JobCounter(); var jobCounter = new JobCounter();
//var jobs = {};
/** /**
* It only checks if the blockTemplate is already in our jobs list. * It only checks if the blockTemplate is already in our jobs list.
@ -70,20 +70,11 @@ var JobManager = module.exports = function JobManager(options){
} else { } else {
return false; return false;
} }
/*var newBlock = true;
for(var job in jobs){
if (jobs[job].rpcData.previousblockhash === prevBlockHash) {
newBlock = false;
}
}
return newBlock;*/
} }
//Which number to use as dividend when converting difficulty to target //Which number to use as dividend when converting difficulty to target
var diffDividend = (function(){ var diffDividend = bignum((function(){
switch(options.algorithm){ switch(options.algorithm){
case 'sha256': case 'sha256':
return '00000000ffff0000000000000000000000000000000000000000000000000000'; return '00000000ffff0000000000000000000000000000000000000000000000000000';
@ -94,7 +85,7 @@ var JobManager = module.exports = function JobManager(options){
case 'x11': case 'x11':
return '000000ffff000000000000000000000000000000000000000000000000000000'; return '000000ffff000000000000000000000000000000000000000000000000000000';
} }
})(); })(), 16);
//On initialization lets figure out which hashing algorithm to use //On initialization lets figure out which hashing algorithm to use
@ -144,7 +135,6 @@ var JobManager = module.exports = function JobManager(options){
options.txMessages options.txMessages
); );
//jobs[tmpBlockTemplate.jobId] = tmpBlockTemplate;
this.currentJob = tmpBlockTemplate; this.currentJob = tmpBlockTemplate;
_this.emit('newBlock', tmpBlockTemplate); _this.emit('newBlock', tmpBlockTemplate);
@ -169,7 +159,6 @@ var JobManager = module.exports = function JobManager(options){
return shareError([20, 'incorrect size of extranonce2']); return shareError([20, 'incorrect size of extranonce2']);
var job = this.currentJob; var job = this.currentJob;
//var job = jobs[jobId];
if (typeof job === 'undefined' || job.jobId != jobId ) { if (typeof job === 'undefined' || job.jobId != jobId ) {
return shareError([21, 'job not found']); return shareError([21, 'job not found']);
@ -214,7 +203,7 @@ var JobManager = module.exports = function JobManager(options){
blockHash = util.reverseBuffer(util.doublesha(headerBuffer)).toString('hex'); blockHash = util.reverseBuffer(util.doublesha(headerBuffer)).toString('hex');
} }
else { else {
var targetUser = bignum(diffDividend, 16).div(difficulty); var targetUser = diffDividend.div(difficulty);
if (headerBigNum.gt(targetUser)){ if (headerBigNum.gt(targetUser)){
return shareError([23, 'low difficulty share']); return shareError([23, 'low difficulty share']);
} }