c# - Thread with while (true) loop exits somehow -
i have thread supposed run continuously in program , parse incoming serial data collection of sensors.
//initialized global variable system.threading.thread processthread = new system.threading.thread(processserialdata); //this gets called when press start button processthread.start(); private void processserialdata() { while (true) { //do whole bunch of parsing stuff } int howdidyougethere = 0; } how possible program reaching "int howdidyougethere = 0" line??
full code can found here:
/// <summary> /// processserialdata thread used continue testing connection controller, /// process messages in incoming message queue (actually linked list), /// , sends new messages updated data. /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void processserialdata() { while (true) { updateahtextbox(test.amphoursout.tostring()); if (!relayboard.openconn()) { messagebox.show("connection controller has been lost."); testinterrupted = "lost connection. time = " + test.duration; updatestatustext(false); shuterdown(); } ///////////////////////////////////////////////////// if (incomingdata.count > 0) { string dataline = ""; try { dataline = incomingdata.first(); updateparseddatatextbox(dataline + "\r\n"); } catch (system.invalidoperationexception emai) { break; //data hasn't come in yet, time runs next. } incomingdata.removefirst(); if (dataline.contains("get")) // sensor values (analog/temp/digital) has come in { if (dataline.contains("getanalog")) // analog value has come in { int index = dataline.indexof("ch"); int pin = (int)char.getnumericvalue(dataline[index + 2]); double value = 0; int datalinelength = dataline.length; if (datalinelength > 13) // value appended end of line { try { value = convert.todouble(dataline.substring(13)); } catch // can't convert double { int index2 = dataline.indexof("ch", 3); if (index2 != -1) // there happen 2 sets of commands stuck 1 { string secondhalf = dataline.substring(index2); incomingdata.addfirst(secondhalf); } } } else // value on next line { try { value = convert.todouble(incomingdata.first()); incomingdata.removefirst(); } catch // can't convert double { messagebox.show("error occured: " + dataline); } } switch (pin) { case 1: readvoltage(value); break; case 2: readamperage(value); break; } } else if (dataline.contains("gettemp")) // received reply temperature data { int index = dataline.indexof("ch"); int pin = (int)char.getnumericvalue(dataline[index + 2]); // using index of ch, retrieve pin message coming double value = 0; int datalinelength = dataline.length; if (datalinelength > 11) // value appended end of line { try { value = convert.todouble(dataline.substring(11)); } catch // can't convert double { int index2 = dataline.indexof("ch", 3); if (index2 != -1) // there happen 2 sets of commands stuck 1 { string secondhalf = dataline.substring(index2); incomingdata.addfirst(secondhalf); } } } else // value on next line { value = convert.todouble(incomingdata.first()); incomingdata.removefirst(); } readtemperature(pin, value); } else // must ch3.get { int index = dataline.indexof("ch"); int pin = (int)char.getnumericvalue(dataline[index + 2]); // using index of ch, retrieve pin message coming if (pin == 3) // care if it's pin 3 (bms), otherwise it's mistake { double value = 0; int datalinelength = dataline.length; if (datalinelength > 7) // value appended end of line { try { value = convert.todouble(dataline.substring(7)); } catch // can't convert double { int index2 = dataline.indexof("ch", 3); if (index2 != -1) // there happen 2 sets of commands stuck 1 { string secondhalf = dataline.substring(index2); incomingdata.addfirst(secondhalf); } } } else // value on next line { value = convert.todouble(incomingdata.first()); incomingdata.removefirst(); } readbms(value); } } } else if (dataline.contains("rel")) // received reply relay turning on or off. { if (dataline.contains("rels")) // relays turning on/off { if (dataline.contains("on")) { (int pin = 1; pin <= 4; pin++) { test.contactors[pin] = true; } } else // "off" { (int pin = 1; pin <= 4; pin++) { test.contactors[pin] = false; } } } else // single relay turning on/off { int index = dataline.indexof("rel"); int pin = (int)char.getnumericvalue(dataline[index + 3]); if (dataline.contains("on")) { test.contactors[pin] = true; } else if (dataline.contains("off")) { test.contactors[pin] = false; } else if (dataline.contains("get")) { if (convert.toint32(incomingdata.first()) == 1) test.contactors[pin] = true; else test.contactors[pin] = false; incomingdata.removefirst(); } } } } ///////////////////////////////////////////////////// // want more data if we're done processing current data, otherwise we're stuck , processing heavily delayed. if (istestrunning && incomingdata.count < 3) { //read & output v, a, bms state sendtocontroller("ch1.getanalog"); // voltage sendtocontroller("ch2.getanalog"); // amperage sendtocontroller("ch3.get"); // bms state //read & output temperature sendtocontroller("ch4.gettemp"); // temperature sendtocontroller("ch5.gettemp"); string lines = "ah out: " + test.amphoursout + ", voltage: " + test.voltage + ", amperage: " + test.amperage + ", cell temperature: " + test.tempbattery + ", load temperature: " + test.tempload; writetolog(lines); } } int howdidyougethere = 0; }
the break (ignoring inside nested switch) breaks out of while loop.
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