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Side by Side Diff: base/android/library_loader/library_loader_hooks.h

Issue 289303004: Allow native command line arguments to be initialized early. (Closed) Base URL: https://chromium.googlesource.com/chromium/src
Patch Set: Rebase More. Created 6 years, 4 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef BASE_ANDROID_LIBRARY_LOADER_HOOKS_H_ 5 #ifndef BASE_ANDROID_LIBRARY_LOADER_HOOKS_H_
6 #define BASE_ANDROID_LIBRARY_LOADER_HOOKS_H_ 6 #define BASE_ANDROID_LIBRARY_LOADER_HOOKS_H_
7 7
8 #include <jni.h> 8 #include <jni.h>
9 9
10 #include "base/base_export.h" 10 #include "base/base_export.h"
11 11
12 namespace base { 12 namespace base {
13 namespace android { 13 namespace android {
14 14
15 // Registers the callbacks that allows the entry point of the library to be 15 // Registers the callbacks that allows the entry point of the library to be
16 // exposed to the calling java code. This handles only registering the 16 // exposed to the calling java code. This handles only registering the
17 // the callbacks needed by the loader. Any application specific JNI bindings 17 // the callbacks needed by the loader. Any application specific JNI bindings
18 // should happen once the native library has fully loaded, either in the library 18 // should happen once the native library has fully loaded, either in the library
19 // loaded hook function or later. 19 // loaded hook function or later.
20 BASE_EXPORT bool RegisterLibraryLoaderEntryHook(JNIEnv* env); 20 BASE_EXPORT bool RegisterLibraryLoaderEntryHook(JNIEnv* env);
21 21
22 // Typedef for hook function to be called (indirectly from Java) once the 22 // Typedef for hook function to be called (indirectly from Java) once the
23 // libraries are loaded. The hook function should register the JNI bindings 23 // libraries are loaded. The hook function should register the JNI bindings
24 // required to start the application. It should return true for success and 24 // required to start the application. It should return true for success and
25 // false for failure. 25 // false for failure.
26 // Note: this can't use base::Callback because there is no way of initializing 26 // Note: this can't use base::Callback because there is no way of initializing
27 // the default callback without using static objects, which we forbid. 27 // the default callback without using static objects, which we forbid.
28 typedef bool LibraryLoadedHook(JNIEnv* env, 28 typedef bool LibraryLoadedHook(JNIEnv* env,
29 jclass clazz, 29 jclass clazz);
30 jobjectArray init_command_line);
31 30
32 // Set the hook function to be called (from Java) once the libraries are loaded. 31 // Set the hook function to be called (from Java) once the libraries are loaded.
33 // SetLibraryLoadedHook may only be called from JNI_OnLoad. The hook function 32 // SetLibraryLoadedHook may only be called from JNI_OnLoad. The hook function
34 // should register the JNI bindings required to start the application. 33 // should register the JNI bindings required to start the application.
35 34
36 BASE_EXPORT void SetLibraryLoadedHook(LibraryLoadedHook* func); 35 BASE_EXPORT void SetLibraryLoadedHook(LibraryLoadedHook* func);
37 36
38 // Pass the version name to the loader. This used to check that the library 37 // Pass the version name to the loader. This used to check that the library
39 // version matches the version expected by Java before completing JNI 38 // version matches the version expected by Java before completing JNI
40 // registration. 39 // registration.
41 // Note: argument must remain valid at least until library loading is complete. 40 // Note: argument must remain valid at least until library loading is complete.
42 BASE_EXPORT void SetVersionNumber(const char* version_number); 41 BASE_EXPORT void SetVersionNumber(const char* version_number);
43 42
44 // Call on exit to delete the AtExitManager which OnLibraryLoadedOnUIThread 43 // Call on exit to delete the AtExitManager which OnLibraryLoadedOnUIThread
45 // created. 44 // created.
46 BASE_EXPORT void LibraryLoaderExitHook(); 45 BASE_EXPORT void LibraryLoaderExitHook();
47 46
48 } // namespace android 47 } // namespace android
49 } // namespace base 48 } // namespace base
50 49
51 #endif // BASE_ANDROID_LIBRARY_LOADER_HOOKS_H_ 50 #endif // BASE_ANDROID_LIBRARY_LOADER_HOOKS_H_
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