/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- * vim: set ts=8 sts=2 et sw=2 tw=80: * * Copyright 2017 Mozilla Foundation * * 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 wasm_process_h #define wasm_process_h
#include"mozilla/Atomics.h"
#include"wasm/WasmMemory.h"
namespace js { namespace wasm {
class Code; class CodeRange; class CodeBlock; class TagType;
// These methods return the wasm::CodeBlock (resp. wasm::Code) containing // the given pc, if any exist in the process. These methods do not take a lock, // and thus are safe to use in a profiling context.
// Return whether the given PC is in any type of wasm code (module or builtin).
bool InCompiledCode(void* pc);
// A bool member that can be used as a very fast lookup to know if there is any // code segment at all.
extern mozilla::Atomic<bool> CodeExists;
// These methods allow to (un)register CodeBlocks so they can be looked up // via pc in the methods described above.
bool RegisterCodeBlock(const CodeBlock* cs);
void UnregisterCodeBlock(const CodeBlock* cs);
// Whether this process is configured to use huge memory or not. Note that this // is not precise enough to tell whether a particular memory uses huge memory, // there are additional conditions for that.
bool IsHugeMemoryEnabled(AddressType t);
// Called once before/after the last VM execution which could execute or compile // wasm.
bool Init();
void ShutDown();
} // namespace wasm
} // namespace js
#endif// wasm_process_h
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