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