88 lines
3.3 KiB
C++
88 lines
3.3 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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#ifndef BASE_ANDROID_LIBRARY_LOADER_LIBRARY_LOADER_HOOKS_H_
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#define BASE_ANDROID_LIBRARY_LOADER_LIBRARY_LOADER_HOOKS_H_
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#include <jni.h>
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#include "base/base_export.h"
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#include "base/command_line.h"
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#include "base/functional/callback.h"
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#include "base/metrics/field_trial.h"
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namespace base {
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namespace android {
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// The process the shared library is loaded in.
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// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.base.library_loader
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enum LibraryProcessType {
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// The LibraryLoad has not been initialized.
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PROCESS_UNINITIALIZED = 0,
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// Shared library is running in browser process.
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PROCESS_BROWSER = 1,
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// Shared library is running in child process.
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PROCESS_CHILD = 2,
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// Shared library is running in the app that uses webview.
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PROCESS_WEBVIEW = 3,
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// Shared library is running in child process as part of webview.
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PROCESS_WEBVIEW_CHILD = 4,
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// Shared library is running in the app that uses weblayer.
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PROCESS_WEBLAYER = 5,
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// Shared library is running in child process as part of weblayer.
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PROCESS_WEBLAYER_CHILD = 6,
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// Shared library is running in a non-embedded WebView process.
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PROCESS_WEBVIEW_NONEMBEDDED = 7,
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};
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// Returns the library process type this library was loaded for.
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BASE_EXPORT LibraryProcessType GetLibraryProcessType();
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// Whether fewer code should be prefetched, and no-readahead should be set.
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// Returns true on low-end devices, where this speeds up startup, and false
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// elsewhere, where it slows it down. See
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// https://bugs.chromium.org/p/chromium/issues/detail?id=758566#c71 for details.
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BASE_EXPORT bool IsUsingOrderfileOptimization();
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typedef bool NativeInitializationHook(LibraryProcessType library_process_type);
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BASE_EXPORT void SetNativeInitializationHook(
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NativeInitializationHook native_initialization_hook);
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// Record any pending renderer histogram value as histograms. Pending values
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// are set by
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// JNI_LibraryLoader_RegisterChromiumAndroidLinkerRendererHistogram().
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BASE_EXPORT void RecordLibraryLoaderRendererHistograms();
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// Typedef for hook function to be called (indirectly from Java) once the
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// libraries are loaded. The hook function should register the JNI bindings
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// required to start the application. It should return true for success and
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// false for failure.
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// Note: this can't use base::{Once, Repeating}Callback because there is no
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// way of initializing the default callback without using static objects, which
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// we forbid.
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typedef bool LibraryLoadedHook(JNIEnv* env,
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jclass clazz,
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LibraryProcessType library_process_type);
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// Set the hook function to be called (from Java) once the libraries are loaded.
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// SetLibraryLoadedHook may only be called from JNI_OnLoad. The hook function
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// should register the JNI bindings required to start the application.
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BASE_EXPORT void SetLibraryLoadedHook(LibraryLoadedHook* func);
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// Call on exit to delete the AtExitManager which OnLibraryLoadedOnUIThread
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// created.
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BASE_EXPORT void LibraryLoaderExitHook();
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// Initialize AtExitManager, this must be done at the begining of loading
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// shared library.
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void InitAtExitManager();
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} // namespace android
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} // namespace base
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#endif // BASE_ANDROID_LIBRARY_LOADER_LIBRARY_LOADER_HOOKS_H_
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