104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
// Copyright 2014 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/android/library_loader/library_loader_hooks.h"
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#include <string>
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#include "base/android/jni_string.h"
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#include "base/android/library_loader/anchor_functions_buildflags.h"
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#include "base/android/library_loader/library_prefetcher.h"
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#include "base/android/orderfile/orderfile_buildflags.h"
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#include "base/android/sys_utils.h"
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#include "base/at_exit.h"
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#include "base/base_jni_headers/LibraryLoader_jni.h"
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#include "base/base_switches.h"
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#include "base/metrics/histogram.h"
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#include "base/metrics/histogram_functions.h"
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#include "base/metrics/histogram_macros.h"
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#if BUILDFLAG(ORDERFILE_INSTRUMENTATION)
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#include "base/android/orderfile/orderfile_instrumentation.h"
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#endif
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namespace base {
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namespace android {
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namespace {
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base::AtExitManager* g_at_exit_manager = nullptr;
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LibraryLoadedHook* g_registration_callback = nullptr;
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NativeInitializationHook* g_native_initialization_hook = nullptr;
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LibraryProcessType g_library_process_type = PROCESS_UNINITIALIZED;
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} // namespace
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LibraryProcessType GetLibraryProcessType() {
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return g_library_process_type;
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}
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bool IsUsingOrderfileOptimization() {
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#if BUILDFLAG(SUPPORTS_CODE_ORDERING)
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return SysUtils::IsLowEndDeviceFromJni();
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#else // !SUPPORTS_CODE_ORDERING
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return false;
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#endif
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}
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void SetNativeInitializationHook(
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NativeInitializationHook native_initialization_hook) {
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g_native_initialization_hook = native_initialization_hook;
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}
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void SetLibraryLoadedHook(LibraryLoadedHook* func) {
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g_registration_callback = func;
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}
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static jboolean JNI_LibraryLoader_LibraryLoaded(
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JNIEnv* env,
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jint library_process_type) {
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DCHECK_EQ(g_library_process_type, PROCESS_UNINITIALIZED);
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g_library_process_type =
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static_cast<LibraryProcessType>(library_process_type);
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#if BUILDFLAG(ORDERFILE_INSTRUMENTATION)
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orderfile::StartDelayedDump();
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#endif
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#if BUILDFLAG(SUPPORTS_CODE_ORDERING)
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if (CommandLine::ForCurrentProcess()->HasSwitch(
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"log-native-library-residency")) {
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NativeLibraryPrefetcher::MadviseForResidencyCollection();
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} else if (IsUsingOrderfileOptimization()) {
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NativeLibraryPrefetcher::MadviseForOrderfile();
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}
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#endif
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if (g_native_initialization_hook &&
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!g_native_initialization_hook(
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static_cast<LibraryProcessType>(library_process_type)))
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return false;
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if (g_registration_callback &&
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!g_registration_callback(
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env, nullptr,
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static_cast<LibraryProcessType>(library_process_type))) {
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return false;
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}
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return true;
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}
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void LibraryLoaderExitHook() {
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if (g_at_exit_manager) {
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delete g_at_exit_manager;
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g_at_exit_manager = nullptr;
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}
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}
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void InitAtExitManager() {
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g_at_exit_manager = new base::AtExitManager();
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}
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} // namespace android
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} // namespace base
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