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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/optimization_guide/core/optimization_guide_library_holder.h"
#include <memory>
#include <optional>
#include "base/base_paths.h"
#include "base/check_is_test.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/memory/raw_ptr.h"
#include "base/path_service.h"
#include "base/scoped_native_library.h"
#include "base/types/pass_key.h"
#if BUILDFLAG(IS_MAC)
#include "base/apple/bundle_locations.h"
#include "base/apple/foundation_util.h"
#endif
namespace optimization_guide {
namespace {
constexpr std::string_view kSharedLibraryName = "optimization_guide_internal";
}
base::FilePath GetSharedLibraryPath() {
base::FilePath base_dir;
#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_IOS) && !BUILDFLAG(IS_FUCHSIA)
#if BUILDFLAG(IS_MAC)
if (base::apple::AmIBundled()) {
base_dir = base::apple::FrameworkBundlePath().Append("Libraries");
} else {
#endif // BUILDFLAG(IS_MAC)
CHECK(base::PathService::Get(base::DIR_MODULE, &base_dir));
#if BUILDFLAG(IS_MAC)
}
#endif // BUILDFLAG(IS_MAC)
#endif // !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_IOS) &&
// !BUILDFLAG(IS_FUCHSIA)
return base_dir.AppendASCII(
base::GetNativeLibraryName(std::string(kSharedLibraryName)));
}
OptimizationGuideLibraryHolder::OptimizationGuideLibraryHolder(
base::PassKey<OptimizationGuideLibraryHolder>,
base::ScopedNativeLibrary library)
: library_(std::move(library)) {}
OptimizationGuideLibraryHolder::~OptimizationGuideLibraryHolder() = default;
// static
DISABLE_CFI_DLSYM
std::unique_ptr<OptimizationGuideLibraryHolder>
OptimizationGuideLibraryHolder::Create() {
base::NativeLibraryLoadError error;
base::NativeLibrary library =
base::LoadNativeLibrary(GetSharedLibraryPath(), &error);
if (!library) {
return {};
}
base::ScopedNativeLibrary scoped_library(library);
return std::make_unique<OptimizationGuideLibraryHolder>(
base::PassKey<OptimizationGuideLibraryHolder>(),
std::move(scoped_library));
}
void* OptimizationGuideLibraryHolder::GetFunctionPointer(
const char* function_name) {
return library_.GetFunctionPointer(function_name);
}
} // namespace optimization_guide
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