diff --git a/runtime/jit/jit_code_cache.h b/runtime/jit/jit_code_cache.h
new file mode 100644
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+++ b/runtime/jit/jit_code_cache.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_JIT_JIT_CODE_CACHE_H_
+#define ART_RUNTIME_JIT_JIT_CODE_CACHE_H_
+
+#include "instrumentation.h"
+
+#include "atomic.h"
+#include "base/macros.h"
+#include "base/mutex.h"
+#include "gc_root.h"
+#include "jni.h"
+#include "oat_file.h"
+#include "object_callbacks.h"
+#include "safe_map.h"
+#include "thread_pool.h"
+
+namespace art {
+
+class CompiledMethod;
+class CompilerCallbacks;
+
+namespace mirror {
+class ArtMethod;
+}  // namespcae mirror
+
+namespace jit {
+
+class JitInstrumentationCache;
+
+class JitCodeCache {
+ public:
+  static constexpr size_t kMaxCapacity = 1 * GB;
+  static constexpr size_t kDefaultCapacity = 2 * MB;
+
+  static JitCodeCache* Create(size_t capacity, std::string* error_msg);
+
+  const uint8_t* CodeCachePtr() const {
+    return code_cache_ptr_;
+  }
+  size_t CodeCacheSize() const {
+    return code_cache_ptr_ - code_cache_begin_;
+  }
+  size_t CodeCacheRemain() const {
+    return code_cache_end_ - code_cache_ptr_;
+  }
+  size_t DataCacheSize() const {
+    return data_cache_ptr_ - data_cache_begin_;
+  }
+  size_t DataCacheRemain() const {
+    return data_cache_end_ - data_cache_ptr_;
+  }
+  size_t NumMethods() const {
+    return num_methods_;
+  }
+
+  bool ContainsMethod(mirror::ArtMethod* method) const
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+  bool ContainsCodePtr(const void* ptr) const;
+
+  uint8_t* ReserveCode(Thread* self, size_t size) LOCKS_EXCLUDED(lock_);
+
+  uint8_t* AddDataArray(Thread* self, const uint8_t* begin, const uint8_t* end)
+      LOCKS_EXCLUDED(lock_);
+
+  // Get code for a method, returns null if it is not in the jit cache.
+  const void* GetCodeFor(mirror::ArtMethod* method)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) LOCKS_EXCLUDED(lock_);
+
+  void SaveCompiledCode(mirror::ArtMethod* method, const void* old_code_ptr)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) LOCKS_EXCLUDED(lock_);
+
+ private:
+  // Takes ownership of code_mem_map.
+  explicit JitCodeCache(MemMap* code_mem_map);
+  void FlushInstructionCache();
+
+  Mutex lock_;
+  // Mem map which holds code and data. We do this since we need to have 32 bit offsets from method
+  // headers in code cache which point to things in the data cache. If the maps are more than 4GB
+  // apart, having multiple maps wouldn't work.
+  std::unique_ptr<MemMap> mem_map_;
+  // Code cache section.
+  uint8_t* code_cache_ptr_;
+  const uint8_t* code_cache_begin_;
+  const uint8_t* code_cache_end_;
+  // Data cache section.
+  uint8_t* data_cache_ptr_;
+  const uint8_t* data_cache_begin_;
+  const uint8_t* data_cache_end_;
+  size_t num_methods_;
+  // TODO: This relies on methods not moving.
+  // This map holds code for methods if they were deoptimized by the instrumentation stubs. This is
+  // required since we have to implement ClassLinker::GetQuickOatCodeFor for walking stacks.
+  SafeMap<mirror::ArtMethod*, const void*> method_code_map_;
+
+  DISALLOW_COPY_AND_ASSIGN(JitCodeCache);
+};
+
+
+}  // namespace jit
+}  // namespace art
+
+#endif  // ART_RUNTIME_JIT_JIT_CODE_CACHE_H_