Mercurial Hosting > luan
annotate src/luan/modules/ThreadLuan.java @ 1440:4e50b78c7040
logging
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Fri, 24 Jan 2020 08:41:37 -0500 |
parents | 67bed466460e |
children | 83e2585104b9 |
rev | line source |
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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.Arrays; |
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5 import java.util.Iterator; |
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6 import java.util.Map; |
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7 import java.util.HashMap; |
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8 import java.util.LinkedHashMap; |
1401 | 9 import java.lang.ref.Reference; |
10 import java.lang.ref.WeakReference; | |
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11 import java.util.concurrent.Executor; |
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12 import java.util.concurrent.Executors; |
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13 import java.util.concurrent.ScheduledExecutorService; |
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14 import java.util.concurrent.ScheduledFuture; |
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15 import java.util.concurrent.TimeUnit; |
1401 | 16 import java.util.concurrent.ConcurrentHashMap; |
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17 import java.util.concurrent.locks.Lock; |
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18 import java.util.concurrent.locks.ReadWriteLock; |
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19 import java.util.concurrent.locks.ReentrantLock; |
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20 import java.util.concurrent.locks.ReentrantReadWriteLock; |
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21 import luan.Luan; |
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22 import luan.LuanFunction; |
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23 import luan.LuanTable; |
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24 import luan.LuanException; |
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25 import luan.LuanCloner; |
1322 | 26 import luan.LuanCloneable; |
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27 import goodjava.logging.Logger; |
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28 import goodjava.logging.LoggerFactory; |
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29 |
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30 |
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31 public final class ThreadLuan { |
1401 | 32 private static final Logger logger = LoggerFactory.getLogger(ThreadLuan.class); |
33 | |
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34 private static final Executor exec = Executors.newCachedThreadPool(); |
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35 public static final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1); |
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36 |
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37 private static Runnable runnable(final LuanFunction fn) { |
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38 return new Runnable() { |
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39 public synchronized void run() { |
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40 try { |
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41 fn.call(); |
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42 } catch(LuanException e) { |
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43 e.printStackTrace(); |
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44 } |
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45 } |
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46 }; |
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47 } |
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48 |
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49 public static void fork(LuanFunction fn) { |
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50 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE); |
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51 final LuanFunction newFn = (LuanFunction)cloner.get(fn); |
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52 exec.execute(runnable(newFn)); |
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53 } |
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54 |
1401 | 55 private static Map<String,Reference<ScheduledFuture>> scheduleds = new ConcurrentHashMap<String,Reference<ScheduledFuture>>(); |
56 | |
1440 | 57 private static void cancel(ScheduledFuture sf,String src) { |
1439 | 58 boolean b = sf.cancel(false); |
59 if( !b ) | |
1440 | 60 logger.error(src+" cancel failed isCancelled="+sf.isCancelled()+" isDone="+sf.isDone()); |
1439 | 61 } |
62 | |
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63 public static void schedule(LuanFunction fn,LuanTable options) |
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64 throws LuanException |
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65 { |
1420 | 66 options = new LuanTable(options); |
67 Number delay = Utils.removeNumber(options,"delay"); | |
68 Number repeatingDelay = Utils.removeNumber(options,"repeating_delay"); | |
69 Number repeatingRate = Utils.removeNumber(options,"repeating_rate"); | |
70 String id = Utils.removeString(options,"id"); | |
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71 if( repeatingDelay!=null && repeatingRate!=null ) |
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72 throw new LuanException("can't define both repeating_delay and repeating_rate"); |
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73 boolean repeating = repeatingDelay!=null || repeatingRate!=null; |
1420 | 74 Utils.checkEmpty(options); |
1401 | 75 if( id != null ) { |
76 Reference<ScheduledFuture> ref = scheduleds.remove(id); | |
77 if( ref != null ) { | |
78 ScheduledFuture sf = ref.get(); | |
79 if( sf != null ) | |
1440 | 80 cancel(sf,"id"); |
1401 | 81 } |
82 } | |
1335 | 83 Luan luan = fn.luan(); |
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84 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE); |
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85 final Luan newLuan = (Luan)cloner.clone(luan); |
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86 final LuanFunction newFn = (LuanFunction)cloner.get(fn); |
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87 final Runnable r = runnable(newFn); |
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88 final ScheduledFuture sf; |
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89 if( repeatingDelay != null ) { |
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90 if( delay==null ) |
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91 delay = repeatingDelay; |
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92 sf = scheduler.scheduleWithFixedDelay(r,delay.longValue(),repeatingDelay.longValue(),TimeUnit.MILLISECONDS); |
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93 } else if( repeatingRate != null ) { |
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94 if( delay==null ) |
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95 delay = repeatingRate; |
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96 sf = scheduler.scheduleWithFixedDelay(r,delay.longValue(),repeatingRate.longValue(),TimeUnit.MILLISECONDS); |
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97 } else if( delay != null ) { |
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98 sf = scheduler.schedule(r,delay.longValue(),TimeUnit.MILLISECONDS); |
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99 } else { |
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100 scheduler.schedule(r,0L,TimeUnit.MILLISECONDS); |
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101 return; |
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102 } |
1401 | 103 Object c = new Object() { |
104 protected void finalize() throws Throwable { | |
1440 | 105 cancel(sf,"gc"); |
1401 | 106 } |
107 }; | |
108 luan.registry().put(c,c); // cancel on gc | |
109 if( id != null ) | |
110 scheduleds.put(id,new WeakReference<ScheduledFuture>(sf)); | |
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111 } |
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112 |
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113 /* |
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114 public static class GlobalMap { |
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115 |
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116 private static class Value { |
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117 final long time = System.currentTimeMillis(); |
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118 final Object v; |
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119 |
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120 Value(Object v) { |
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121 this.v = v; |
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122 } |
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123 } |
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124 |
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125 public long timeout = 60000L; // one minute |
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126 private Map<String,Value> map = new LinkedHashMap<String,Value>() { |
1080 | 127 protected boolean removeEldestEntry(Map.Entry<String,Value> eldest) { |
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128 return eldest.getValue().time < System.currentTimeMillis() - timeout; |
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129 } |
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130 }; |
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131 |
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132 public synchronized Object get(String key) { |
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133 Value val = map.get(key); |
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134 return val==null ? null : val.v; |
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135 } |
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136 |
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137 public synchronized Object put(String key,Object v) throws LuanException { |
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138 Value val; |
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139 if( v == null ) { |
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140 val = map.remove(key); |
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141 } else { |
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142 if( !(v instanceof String || v instanceof Boolean || v instanceof Number) ) |
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143 throw new LuanException("can't assign type "+Luan.type(v)+" to Thread.global"); |
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144 val = map.put(key,new Value(v)); |
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145 } |
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146 return val==null ? null : val.v; |
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147 } |
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148 } |
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149 */ |
1104 | 150 |
151 public static void sleep(long millis) throws InterruptedException { | |
152 Thread.sleep(millis); | |
153 } | |
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154 |
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155 |
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156 private static class Unsafe { |
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157 private final String reason; |
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158 |
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159 Unsafe(String reason) { |
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160 this.reason = reason; |
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161 } |
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162 } |
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163 |
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164 private static Object makeSafe(Luan luan,Object v) throws LuanException { |
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165 if( v instanceof LuanTable ) { |
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166 LuanTable tbl = (LuanTable)v; |
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167 if( tbl.getMetatable() != null ) |
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168 return new Unsafe("table with metatable"); |
1267 | 169 LuanTable rtn = new LuanTable(luan); |
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170 for( Map.Entry entry : tbl.rawIterable() ) { |
1267 | 171 Object key = makeSafe( luan, entry.getKey() ); |
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172 if( key instanceof Unsafe ) |
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173 return key; |
1267 | 174 Object value = makeSafe( luan, entry.getValue() ); |
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175 if( value instanceof Unsafe ) |
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176 return value; |
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177 rtn.rawPut(key,value); |
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178 } |
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179 return rtn; |
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180 } else if( v instanceof Object[] ) { |
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181 Object[] a = (Object[])v; |
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182 for( int i=0; i<a.length; i++ ) { |
1267 | 183 Object obj = makeSafe(luan,a[i]); |
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184 if( obj instanceof Unsafe ) |
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185 return obj; |
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186 a[i] = obj; |
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187 } |
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188 return a; |
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189 } else { |
1322 | 190 if( v instanceof LuanCloneable ) |
191 return new Unsafe("type "+Luan.type(v)); | |
192 return v; | |
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193 } |
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194 } |
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195 |
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196 public static final class Callable { |
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197 private long expires; |
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198 private final Luan luan = new Luan(); |
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199 private final LuanTable fns; |
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200 |
1335 | 201 Callable(LuanTable fns) { |
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202 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE); |
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203 this.fns = (LuanTable)cloner.get(fns); |
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204 } |
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205 |
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206 public synchronized Object call(Luan callerLuan,String fnName,Object... args) throws LuanException { |
1267 | 207 Object obj = makeSafe(luan,args); |
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208 if( obj instanceof Unsafe ) |
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209 throw new LuanException("can't pass "+((Unsafe)obj).reason+" to global_callable "+Arrays.asList(args)); |
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210 args = (Object[])obj; |
1267 | 211 Object f = fns.get(fnName); |
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212 if( f == null ) |
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213 throw new LuanException("function '"+fnName+"' not found in global_callable"); |
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214 if( !(f instanceof LuanFunction) ) |
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215 throw new LuanException("value of '"+fnName+"' not a function in global_callable"); |
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216 LuanFunction fn = (LuanFunction)f; |
1335 | 217 Object rtn = fn.call(args); |
1267 | 218 rtn = makeSafe(callerLuan,rtn); |
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219 if( rtn instanceof Unsafe ) |
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220 throw new LuanException("can't return "+((Unsafe)rtn).reason+" from global_callable"); |
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221 return rtn; |
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222 } |
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223 } |
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224 |
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225 private static Map<String,Callable> callableMap = new HashMap<String,Callable>(); |
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226 |
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227 private static void sweep() { |
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228 long now = System.currentTimeMillis(); |
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229 for( Iterator<Callable> iter = callableMap.values().iterator(); iter.hasNext(); ) { |
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230 Callable callable = iter.next(); |
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231 if( callable.expires < now ) |
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232 iter.remove(); |
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233 } |
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234 } |
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235 |
1335 | 236 public static synchronized Callable globalCallable(String name,LuanTable fns,long timeout) { |
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237 Callable callable = callableMap.get(name); |
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238 if( callable == null ) { |
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239 sweep(); |
1335 | 240 callable = new Callable(fns); |
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241 callableMap.put(name,callable); |
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242 } |
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243 callable.expires = System.currentTimeMillis() + timeout; |
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244 return callable; |
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245 } |
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246 |
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247 public static synchronized void removeGlobalCallable(String name) { |
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248 callableMap.remove(name); |
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249 } |
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250 |
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251 |
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252 public static void lock(Lock lock) |
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253 throws LuanException, InterruptedException |
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254 { |
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255 if( !lock.tryLock(10,TimeUnit.MINUTES) ) |
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256 throw new LuanException("failed to acquire lock"); |
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257 } |
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258 |
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259 public static Object runInLock(Lock lock,LuanFunction fn,Object... args) |
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260 throws LuanException, InterruptedException |
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261 { |
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262 lock(lock); |
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263 try { |
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264 return fn.call(args); |
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265 } finally { |
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266 lock.unlock(); |
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267 } |
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268 } |
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269 |
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270 } |