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var _handleTradeWaitingQueue = [], // 處理的 queue | |
concurrentTradeLimit = 300, // 同時處理上限 | |
concurrentTradeCount = 0; // 處理計數 | |
function afterTradeHandle () { | |
// 計數小於上限 且 有未處理項目才處理 | |
if (concurrentTradeCount < concurrentTradeLimit | |
&& _handleTradeWaitingQueue.length) { | |
concurrentTradeCount++; | |
handle(_handleTradeWaitingQueue.shift()); | |
} | |
} | |
function handle(dd) { | |
... | |
// 受限制的項目 | |
else if (dd.c == 5) { | |
if (/* 不處理的條件*/) { | |
concurrentTradeCount--; | |
afterTradeHandle(); | |
return; | |
} | |
....trade(..., function (data) { | |
// callback 中, 基本吃 memory 的應該都結束了 | |
concurrentTradeCount--; | |
afterTradeHandle(); | |
... | |
}); | |
} | |
... | |
} | |
....on('data', function (dataStr) { | |
... | |
if (_.isUndefined(dd.c) == false) { | |
//console.log('dd: ' + JSON.stringify(dd)); | |
if (dd.c == 5) { // 如果是受限制項目 | |
// 計數小於上限 而且沒有等待中的項目 才處理 | |
if (concurrentTradeCount < concurrentTradeLimit | |
&& !_handleTradeWaitingQueue.length) { | |
concurrentTradeCount++; | |
handle(dd); | |
} else { | |
// 不然丟進 queue 等待 | |
_handleTradeWaitingQueue.push(dd); | |
} | |
} else { | |
handle(dd); | |
} | |
} | |
... | |
} |
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