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annotate src/luan/modules/ThreadLuan.java @ 1806:3b7a8f1cc887 default tip
update discord
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Thu, 09 May 2024 20:39:53 -0600 |
parents | d3ea0380dfb6 |
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1 package luan.modules; |
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2 |
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3 import java.io.Closeable; |
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4 import java.util.Iterator; |
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5 import java.util.Map; |
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6 import java.util.HashMap; |
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7 import java.util.concurrent.Executor; |
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8 import java.util.concurrent.Executors; |
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9 import java.util.concurrent.ScheduledExecutorService; |
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10 import java.util.concurrent.ScheduledFuture; |
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11 import java.util.concurrent.TimeUnit; |
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12 import java.util.concurrent.locks.Lock; |
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13 import java.util.concurrent.locks.ReentrantLock; |
1515 | 14 import goodjava.util.WeakCacheMap; |
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15 import luan.Luan; |
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16 import luan.LuanFunction; |
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17 import luan.LuanTable; |
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18 import luan.LuanException; |
1578 | 19 import luan.LuanMutable; |
1454 | 20 import luan.modules.logging.LuanLogger; |
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21 import goodjava.logging.Logger; |
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22 import goodjava.logging.LoggerFactory; |
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23 |
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24 |
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25 public final class ThreadLuan { |
1401 | 26 private static final Logger logger = LoggerFactory.getLogger(ThreadLuan.class); |
27 | |
1766 | 28 public static final String CLOSEABLES = "Luan.closeables"; |
29 public interface Closeables { | |
30 public void addCloseable(Closeable c) throws LuanException; | |
31 } | |
32 | |
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33 private static final Executor exec = Executors.newCachedThreadPool(); |
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34 public static final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1); |
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35 |
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36 private static Runnable runnable(final Luan luan,final LuanFunction fn) { |
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37 return new Runnable() { |
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38 public synchronized void run() { |
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39 LuanLogger.startThreadLogging(luan); |
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40 try { |
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41 fn.call(luan); |
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42 } catch(LuanException e) { |
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43 e.printStackTrace(); |
1454 | 44 } finally { |
45 LuanLogger.endThreadLogging(); | |
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46 } |
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47 } |
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48 }; |
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49 } |
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50 |
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51 public static void run(Luan luan,LuanFunction fn) throws LuanException { |
1578 | 52 luan = new Luan(luan); |
53 LuanMutable.makeImmutable(fn); | |
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54 exec.execute(runnable(luan,fn)); |
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55 } |
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56 |
1440 | 57 private static void cancel(ScheduledFuture sf,String src) { |
1439 | 58 boolean b = sf.cancel(false); |
1443 | 59 if( !sf.isCancelled() ) |
1441 | 60 logger.error(src+" cancel="+b+" isCancelled="+sf.isCancelled()+" isDone="+sf.isDone()+" "+sf); |
1439 | 61 } |
62 | |
1578 | 63 public static synchronized void schedule_closure(Luan luan,LuanFunction initFn,LuanTable options) |
64 throws LuanException | |
65 { | |
66 final Luan newLuan = new Luan(luan); | |
67 LuanMutable.makeImmutable(initFn); | |
68 LuanFunction fn = (LuanFunction)initFn.call(newLuan); | |
69 scheduleFn(luan,newLuan,fn,options); | |
70 } | |
71 | |
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72 public static synchronized void schedule(Luan luan,LuanFunction fn,LuanTable options) |
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73 throws LuanException |
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74 { |
1578 | 75 final Luan newLuan = new Luan(luan); |
76 LuanMutable.makeImmutable(fn); | |
77 scheduleFn(luan,newLuan,fn,options); | |
78 } | |
79 | |
80 private static synchronized void scheduleFn(Luan luan,final Luan newLuan,LuanFunction fn,LuanTable options) | |
81 throws LuanException | |
82 { | |
1420 | 83 options = new LuanTable(options); |
84 Number delay = Utils.removeNumber(options,"delay"); | |
85 Number repeatingDelay = Utils.removeNumber(options,"repeating_delay"); | |
86 Number repeatingRate = Utils.removeNumber(options,"repeating_rate"); | |
87 String id = Utils.removeString(options,"id"); | |
1766 | 88 if( id != null ) |
89 logger.error("thread option 'id' is obsolete: "+id); | |
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90 if( repeatingDelay!=null && repeatingRate!=null ) |
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91 throw new LuanException("can't define both repeating_delay and repeating_rate"); |
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92 boolean repeating = repeatingDelay!=null || repeatingRate!=null; |
1420 | 93 Utils.checkEmpty(options); |
1578 | 94 final Runnable r = runnable(newLuan,fn); |
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95 final ScheduledFuture sf; |
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96 if( repeatingDelay != null ) { |
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97 if( delay==null ) |
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98 delay = repeatingDelay; |
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99 sf = scheduler.scheduleWithFixedDelay(r,delay.longValue(),repeatingDelay.longValue(),TimeUnit.MILLISECONDS); |
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100 } else if( repeatingRate != null ) { |
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101 if( delay==null ) |
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102 delay = repeatingRate; |
1606 | 103 sf = scheduler.scheduleAtFixedRate(r,delay.longValue(),repeatingRate.longValue(),TimeUnit.MILLISECONDS); |
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104 } else if( delay != null ) { |
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105 sf = scheduler.schedule(r,delay.longValue(),TimeUnit.MILLISECONDS); |
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106 } else { |
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107 scheduler.schedule(r,0L,TimeUnit.MILLISECONDS); |
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108 return; |
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109 } |
1766 | 110 Closeables cs = (Closeables)luan.registry().get(CLOSEABLES); |
111 if( cs != null ) { | |
112 Closeable cl = new Closeable() { | |
113 public void close() { | |
114 cancel(sf,"close"); | |
115 } | |
1599 | 116 protected void finalize() throws Throwable { |
1766 | 117 cancel(sf,"gc"); // cancel on gc |
1599 | 118 } |
119 }; | |
1766 | 120 cs.addCloseable(cl); |
1599 | 121 } |
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122 } |
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123 |
1104 | 124 |
125 public static void sleep(long millis) throws InterruptedException { | |
126 Thread.sleep(millis); | |
127 } | |
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128 |
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129 |
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130 public static final class Callable { |
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131 private long expires; |
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132 private final Luan luan = new Luan(); |
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133 private final LuanTable fns; |
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134 |
1578 | 135 Callable(LuanFunction initFn) throws LuanException { |
136 LuanMutable.makeImmutable(initFn); | |
137 this.fns = (LuanTable)initFn.call(luan); | |
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138 } |
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139 |
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140 public synchronized Object call(Luan callerLuan,String fnName,Object... args) throws LuanException { |
1578 | 141 LuanMutable.makeImmutable(args); |
1562 | 142 Object f = fns.get(luan,fnName); |
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143 if( f == null ) |
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144 throw new LuanException("function '"+fnName+"' not found in global_callable"); |
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145 if( !(f instanceof LuanFunction) ) |
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146 throw new LuanException("value of '"+fnName+"' not a function in global_callable"); |
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147 LuanFunction fn = (LuanFunction)f; |
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148 Object rtn = fn.call(luan,args); |
1578 | 149 LuanMutable.makeImmutable(rtn); |
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150 return rtn; |
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151 } |
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152 } |
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153 |
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154 private static Map<String,Callable> callableMap = new HashMap<String,Callable>(); |
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155 |
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156 private static void sweep() { |
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157 long now = System.currentTimeMillis(); |
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158 for( Iterator<Callable> iter = callableMap.values().iterator(); iter.hasNext(); ) { |
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159 Callable callable = iter.next(); |
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160 if( callable.expires < now ) |
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161 iter.remove(); |
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162 } |
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163 } |
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164 |
1578 | 165 public static synchronized Callable globalCallable(String name,LuanFunction initFn,long timeout) throws LuanException { |
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166 Callable callable = callableMap.get(name); |
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167 if( callable == null ) { |
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168 sweep(); |
1578 | 169 callable = new Callable(initFn); |
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170 callableMap.put(name,callable); |
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171 } |
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172 callable.expires = System.currentTimeMillis() + timeout; |
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173 return callable; |
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174 } |
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175 |
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176 public static synchronized void removeGlobalCallable(String name) { |
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177 callableMap.remove(name); |
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178 } |
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179 |
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180 |
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181 public static Object runInLock(Luan luan,Lock lock,long timeout,LuanFunction fn,Object... args) |
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182 throws LuanException, InterruptedException |
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183 { |
1515 | 184 if( !lock.tryLock(timeout,TimeUnit.MILLISECONDS) ) |
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185 throw new LuanException("failed to acquire lock"); |
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186 try { |
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187 return fn.call(luan,args); |
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188 } finally { |
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189 lock.unlock(); |
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190 } |
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191 } |
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192 |
1515 | 193 private static final Map<String,Lock> locks = new WeakCacheMap<String,Lock>(); |
194 | |
195 public static synchronized Lock getLock(String key) { | |
196 Lock lock = locks.get(key); | |
197 if( lock == null ) { | |
198 lock = new ReentrantLock(); | |
199 locks.put(key,lock); | |
200 } | |
201 return lock; | |
202 } | |
203 | |
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204 } |