JavaScriptCore-1218.tar.gz

[apple/javascriptcore.git] / profiler / ProfilerDatabase.h

diff --git a/profiler/ProfilerDatabase.h b/profiler/ProfilerDatabase.h
new file mode 100644 (file)
index 0000000..172c8ee
--- /dev/null
+++ b/profiler/ProfilerDatabase.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2012, 2013 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 ProfilerDatabase_h
+#define ProfilerDatabase_h
+
+#include "JSCJSValue.h"
+#include "ProfilerBytecodes.h"
+#include "ProfilerCompilation.h"
+#include "ProfilerCompilationKind.h"
+#include <wtf/FastAllocBase.h>
+#include <wtf/HashMap.h>
+#include <wtf/Noncopyable.h>
+#include <wtf/PassRefPtr.h>
+#include <wtf/SegmentedVector.h>
+#include <wtf/text/WTFString.h>
+
+namespace JSC { namespace Profiler {
+
+class Database {
+    WTF_MAKE_FAST_ALLOCATED; WTF_MAKE_NONCOPYABLE(Database);
+public:
+    JS_EXPORT_PRIVATE Database(VM&);
+    JS_EXPORT_PRIVATE ~Database();
+    
+    int databaseID() const { return m_databaseID; }
+    
+    Bytecodes* ensureBytecodesFor(CodeBlock*);
+    void notifyDestruction(CodeBlock*);
+    
+    PassRefPtr<Compilation> newCompilation(CodeBlock*, CompilationKind);
+    PassRefPtr<Compilation> newCompilation(Bytecodes*, CompilationKind);
+    
+    // Converts the database to a JavaScript object that is suitable for JSON stringification.
+    // Note that it's probably a good idea to use an ExecState* associated with a global
+    // object that is "clean" - i.e. array and object prototypes haven't had strange things
+    // done to them. And yes, it should be appropriate to just use a globalExec here.
+    JS_EXPORT_PRIVATE JSValue toJS(ExecState*) const;
+    
+    // Converts the database to a JavaScript object using a private temporary global object,
+    // and then returns the JSON representation of that object.
+    JS_EXPORT_PRIVATE String toJSON() const;
+    
+    // Saves the JSON representation (from toJSON()) to the given file. Returns false if the
+    // save failed.
+    JS_EXPORT_PRIVATE bool save(const char* filename) const;
+
+    void registerToSaveAtExit(const char* filename);
+    
+private:
+
+    void addDatabaseToAtExit();
+    void removeDatabaseFromAtExit();
+    void performAtExitSave() const;
+    static Database* removeFirstAtExitDatabase();
+    static void atExitCallback();
+    
+    int m_databaseID;
+    VM& m_vm;
+    SegmentedVector<Bytecodes> m_bytecodes;
+    HashMap<CodeBlock*, Bytecodes*> m_bytecodesMap;
+    Vector<RefPtr<Compilation> > m_compilations;
+    bool m_shouldSaveAtExit;
+    CString m_atExitSaveFilename;
+    Database* m_nextRegisteredDatabase;
+};
+
+} } // namespace JSC::Profiler
+
+#endif // ProfilerDatabase_h
+