[feat] check interrupts increasingly (till ~ previous 30k)

blindspot-security · Dec 3, 2020 · 35ddadc · 35ddadc
1 parent 70ee48f
commit 35ddadc
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/org/joni/ByteCodeMachine.java b/src/org/joni/ByteCodeMachine.java
@@ -37,7 +37,8 @@
 import org.joni.exception.InternalException;
 
 class ByteCodeMachine extends StackMachine {
-    private static final int INTERRUPT_CHECK_EVERY = 30000;
+    private static final int MAX_INTERRUPT_CHECK_EVERY = 256 << 7; // 32768
+    int INTERRUPT_CHECK_EVERY = 256; //   << 1 after each check up to  ^^^
     volatile boolean interrupted = false;
 
     private int bestLen;          // return value
@@ -444,6 +445,7 @@ private void handleInterrupted(final boolean checkThreadInterrupt) throws Interr
             Thread.currentThread().interrupted();
             throw new InterruptedException();
         }
+        INTERRUPT_CHECK_EVERY = Math.min(INTERRUPT_CHECK_EVERY << 1, MAX_INTERRUPT_CHECK_EVERY);
     }
 
     private boolean opEnd() {