JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / dfg / DFGCommon.cpp

diff --git a/dfg/DFGCommon.cpp b/dfg/DFGCommon.cpp
index 09ac3402f9d916b3b31b70f9bbc8c3284c0f490b..96ac252df6ff16d85620ac48b68e4b68d8cc1810 100644 (file)
--- a/dfg/DFGCommon.cpp
+++ b/dfg/DFGCommon.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013, 2014 Apple Inc. All rights reserved.
+ * Copyright (C) 2013-2015 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -26,20 +26,35 @@
 #include "config.h"
 #include "DFGCommon.h"
 
-#if ENABLE(DFG_JIT)
-
 #include "DFGNode.h"
 #include "JSCInlines.h"
+#include <wtf/PrintStream.h>
+
+#if ENABLE(DFG_JIT)
 
 namespace JSC { namespace DFG {
 
+static StaticSpinLock crashLock;
+
 void startCrashing()
 {
-#if ENABLE(COMPARE_AND_SWAP)
-    static unsigned lock;
-    while (!WTF::weakCompareAndSwap(&lock, 0, 1))
-        std::this_thread::yield();
-#endif
+    crashLock.lock();
+}
+
+bool isCrashing()
+{
+    return crashLock.isLocked();
+}
+
+bool stringLessThan(StringImpl& a, StringImpl& b)
+{
+    unsigned minLength = std::min(a.length(), b.length());
+    for (unsigned i = 0; i < minLength; ++i) {
+        if (a[i] == b[i])
+            continue;
+        return a[i] < b[i];
+    }
+    return a.length() < b.length();
 }
 
 } } // namespace JSC::DFG
@@ -123,3 +138,28 @@ void printInternal(PrintStream& out, ProofStatus status)
 
 #endif // ENABLE(DFG_JIT)
 
+namespace WTF {
+
+using namespace JSC::DFG;
+
+void printInternal(PrintStream& out, CapabilityLevel capabilityLevel)
+{
+    switch (capabilityLevel) {
+    case CannotCompile:
+        out.print("CannotCompile");
+        return;
+    case CanCompile:
+        out.print("CanCompile");
+        return;
+    case CanCompileAndInline:
+        out.print("CanCompileAndInline");
+        return;
+    case CapabilityLevelNotSet:
+        out.print("CapabilityLevelNotSet");
+        return;
+    }
+    RELEASE_ASSERT_NOT_REACHED();
+}
+
+} // namespace WTF
+