From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- js/src/wasm/WasmProcess.h | 80 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 js/src/wasm/WasmProcess.h (limited to 'js/src/wasm/WasmProcess.h') diff --git a/js/src/wasm/WasmProcess.h b/js/src/wasm/WasmProcess.h new file mode 100644 index 0000000000..e107e8917a --- /dev/null +++ b/js/src/wasm/WasmProcess.h @@ -0,0 +1,80 @@ +/* -*- 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 CodeSegment; +class TagType; + +extern const TagType* sWrappedJSValueTagType; +static constexpr uint32_t WrappedJSValueTagType_ValueOffset = 0; + +// These methods return the wasm::CodeSegment (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. + +const CodeSegment* LookupCodeSegment(const void* pc, + const CodeRange** codeRange = nullptr); + +const Code* LookupCode(const void* pc, const CodeRange** codeRange = nullptr); + +// 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 CodeExists; + +// These methods allow to (un)register CodeSegments so they can be looked up +// via pc in the methods described above. + +bool RegisterCodeSegment(const CodeSegment* cs); + +void UnregisterCodeSegment(const CodeSegment* 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(IndexType t); + +[[nodiscard]] bool DisableHugeMemory(); + +// 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 -- cgit v1.2.3