Move V8 to external/v8
Change-Id: If68025d67453785a651c5dfb34fad298c16676a4
diff --git a/src/compilation-cache.h b/src/compilation-cache.h
new file mode 100644
index 0000000..3487c08
--- /dev/null
+++ b/src/compilation-cache.h
@@ -0,0 +1,98 @@
+// Copyright 2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef V8_COMPILATION_CACHE_H_
+#define V8_COMPILATION_CACHE_H_
+
+namespace v8 {
+namespace internal {
+
+
+// The compilation cache keeps function boilerplates for compiled
+// scripts and evals. The boilerplates are looked up using the source
+// string as the key. For regular expressions the compilation data is cached.
+class CompilationCache {
+ public:
+ // Finds the script function boilerplate for a source
+ // string. Returns an empty handle if the cache doesn't contain a
+ // script for the given source string with the right origin.
+ static Handle<JSFunction> LookupScript(Handle<String> source,
+ Handle<Object> name,
+ int line_offset,
+ int column_offset);
+
+ // Finds the function boilerplate for a source string for eval in a
+ // given context. Returns an empty handle if the cache doesn't
+ // contain a script for the given source string.
+ static Handle<JSFunction> LookupEval(Handle<String> source,
+ Handle<Context> context,
+ bool is_global);
+
+ // Returns the regexp data associated with the given regexp if it
+ // is in cache, otherwise an empty handle.
+ static Handle<FixedArray> LookupRegExp(Handle<String> source,
+ JSRegExp::Flags flags);
+
+ // Associate the (source, kind) pair to the boilerplate. This may
+ // overwrite an existing mapping.
+ static void PutScript(Handle<String> source,
+ Handle<JSFunction> boilerplate);
+
+ // Associate the (source, context->closure()->shared(), kind) triple
+ // with the boilerplate. This may overwrite an existing mapping.
+ static void PutEval(Handle<String> source,
+ Handle<Context> context,
+ bool is_global,
+ Handle<JSFunction> boilerplate);
+
+ // Associate the (source, flags) pair to the given regexp data.
+ // This may overwrite an existing mapping.
+ static void PutRegExp(Handle<String> source,
+ JSRegExp::Flags flags,
+ Handle<FixedArray> data);
+
+ // Clear the cache - also used to initialize the cache at startup.
+ static void Clear();
+
+ // GC support.
+ static void Iterate(ObjectVisitor* v);
+
+ // Notify the cache that a mark-sweep garbage collection is about to
+ // take place. This is used to retire entries from the cache to
+ // avoid keeping them alive too long without using them.
+ static void MarkCompactPrologue();
+
+ // Enable/disable compilation cache. Used by debugger to disable compilation
+ // cache during debugging to make sure new scripts are always compiled.
+ static void Enable();
+ static void Disable();
+};
+
+
+} } // namespace v8::internal
+
+#endif // V8_COMPILATION_CACHE_H_