From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- tools/profiler/public/ProfilerCodeAddressService.h | 52 ++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 tools/profiler/public/ProfilerCodeAddressService.h (limited to 'tools/profiler/public/ProfilerCodeAddressService.h') diff --git a/tools/profiler/public/ProfilerCodeAddressService.h b/tools/profiler/public/ProfilerCodeAddressService.h new file mode 100644 index 0000000000..9d75c363b3 --- /dev/null +++ b/tools/profiler/public/ProfilerCodeAddressService.h @@ -0,0 +1,52 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef ProfilerCodeAddressService_h +#define ProfilerCodeAddressService_h + +#include "CodeAddressService.h" +#include "nsTArray.h" + +namespace mozilla { + +// This SymbolTable struct, and the CompactSymbolTable struct in the +// profiler rust module, have the exact same memory layout. +// nsTArray and ThinVec are FFI-compatible, because the thin-vec crate is +// being compiled with the "gecko-ffi" feature enabled. +struct SymbolTable { + SymbolTable() = default; + SymbolTable(SymbolTable&& aOther) = default; + + nsTArray mAddrs; + nsTArray mIndex; + nsTArray mBuffer; +}; + +} // namespace mozilla + +/** + * Cache and look up function symbol names. + * + * We don't template this on AllocPolicy since we need to use nsTArray in + * SymbolTable above, which doesn't work with AllocPolicy. (We can't switch + * to Vector, as we would lose FFI compatibility with ThinVec.) + */ +class ProfilerCodeAddressService : public mozilla::CodeAddressService<> { + public: + // Like GetLocation, but only returns the symbol name. + bool GetFunction(const void* aPc, nsACString& aResult); + + private: +#if defined(XP_LINUX) || defined(XP_FREEBSD) + // Map of library names (owned by mLibraryStrings) to SymbolTables filled + // in by profiler_get_symbol_table. + mozilla::HashMap, AllocPolicy> + mSymbolTables; +#endif +}; + +#endif // ProfilerCodeAddressService_h -- cgit v1.2.3