多进程修改数据；

[dongxingrong]

mmkvdemo里有个testInterProcessLogic()方法执行会闪退；看逻辑是启动新进程去remove数据，再在主进程读取修改后的数据；试了一下先修改数据，再手动促发读取数据，还是会闪退；是否意味着mmkv无法进行多进程读写数据？

[lingol]

MMKV is well performed in multi-process mode. Could you show the symbolized call stacks when it crashed in testInterProcessLogic()?

[dongxingrong]

MMKV is well performed in multi-process mode. Could you show the symbolized call stacks when it crashed in testInterProcessLogic()?

2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at com.tencent.mmkv.MMKV.decodeInt(Native method)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at com.tencent.mmkv.MMKV.decodeInt(MMKV.java:321)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at com.tencent.mmkvdemo.MainActivity.testInterProcessLogic(MainActivity.java:161)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at com.tencent.mmkvdemo.MainActivity.onCreate(MainActivity.java:138)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at android.app.Activity.performCreate(Activity.java:7343)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at android.app.Activity.performCreate(Activity.java:7333)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1219)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3271)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3429)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at android.app.ActivityThread.-wrap12(ActivityThread.java:-1)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2009)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at android.os.Handler.dispatchMessage(Handler.java:109)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at android.os.Looper.loop(Looper.java:166)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at android.app.ActivityThread.main(ActivityThread.java:7555)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at java.lang.reflect.Method.invoke(Native method)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:469)
2020-02-27 09:56:29.885 6110-6110/com.tencent.mmkvdemo A/zygote64: runtime.cc:536] at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:963)

--------- beginning of crash
2020-02-27 09:56:29.886 6110-6110/com.tencent.mmkvdemo A/libc: Fatal signal 6 (SIGABRT), code -6 in tid 6110 (encent.mmkvdemo), pid 6110 (encent.mmkvdemo)
2020-02-27 09:56:29.960 6152-6152/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
2020-02-27 09:56:29.960 6152-6152/? A/DEBUG: Build fingerprint: 'HUAWEI/DUB-AL00/HWDUB-Q:8.1.0/HUAWEIDUB-AL00/116(C00):user/release-keys'
2020-02-27 09:56:29.961 6152-6152/? A/DEBUG: Revision: '0'
2020-02-27 09:56:29.961 6152-6152/? A/DEBUG: ABI: 'arm64'
2020-02-27 09:56:29.961 6152-6152/? A/DEBUG: pid: 6110, tid: 6110, name: encent.mmkvdemo >>> com.tencent.mmkvdemo <<<
2020-02-27 09:56:29.961 6152-6152/? A/DEBUG: signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
2020-02-27 09:56:29.964 6152-6152/? A/DEBUG: Abort message: 'java_vm_ext.cc:534] JNI DETECTED ERROR IN APPLICATION: the return type of CallStaticIntMethodV does not match void com.tencent.mmkv.MMKV.onContentChangedByOuterProcess(java.lang.String)'
2020-02-27 09:56:29.964 6152-6152/? A/DEBUG: x0 0000000000000000 x1 00000000000017de x2 0000000000000006 x3 0000000000000008
2020-02-27 09:56:29.964 6152-6152/? A/DEBUG: x4 0000000015644fa8 x5 0000000015644fa8 x6 0000000015644fa8 x7 00000000001fffff
2020-02-27 09:56:29.964 6152-6152/? A/DEBUG: x8 0000000000000083 x9 0000000010000000 x10 0000007fca80ce00 x11 7f8f201a543d3278
2020-02-27 09:56:29.964 6152-6152/? A/DEBUG: x12 7f8f201a543d3278 x13 7f8f201a543d3278 x14 ffffffffffffffdf x15 00000061552ca000
2020-02-27 09:56:29.964 6152-6152/? A/DEBUG: x16 0000007a59464a40 x17 0000007a57b7d668 x18 00000079d3e00080 x19 00000000000017de
2020-02-27 09:56:29.964 6152-6152/? A/DEBUG: x20 00000000000017de x21 0000000000000083 x22 000000000000006e x23 00000000000011c1
2020-02-27 09:56:29.964 6152-6152/? A/DEBUG: x24 00000079d3bdcd38 x25 00000079c53f3000 x26 00000000000011c0 x27 00000000000011c0
2020-02-27 09:56:29.964 6152-6152/? A/DEBUG: x28 0000000000000043 x29 0000007fca80ce40 x30 0000007a57b23370
2020-02-27 09:56:29.964 6152-6152/? A/DEBUG: sp 0000007fca80ce00 pc 0000007a57b23398 pstate 0000000060000000
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: backtrace:
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #00 pc 000000000001e398 /system/lib64/libc.so (abort+120)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #1 pc 00000000004bf760 /system/lib64/libart.so (art::Runtime::Abort(char const*)+552)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #2 pc 00000000005c415c /system/lib64/libart.so (android::base::LogMessage::~LogMessage()+1048)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #3 pc 000000000032c5b8 /system/lib64/libart.so (art::JavaVMExt::JniAbort(char const*, char const*)+1724)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #4 pc 000000000032c790 /system/lib64/libart.so (art::JavaVMExt::JniAbortV(char const*, char const*, std::__va_list)+108)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #5 pc 0000000000112634 /system/lib64/libart.so (art::ScopedCheck::AbortF(char const*, ...)+144)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #6 pc 0000000000115ed8 /system/lib64/libart.so (art::ScopedCheck::CheckMethodAndSig(art::ScopedObjectAccess&, _jobject*, _jclass*, _jmethodID*, art::Primitive::Type, art::InvokeType)+688)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #7 pc 0000000000114ac0 /system/lib64/libart.so (art::CheckJNI::CallMethodV(char const*, _JNIEnv*, _jobject*, _jclass*, _jmethodID*, std::__va_list, art::Primitive::Type, art::InvokeType)+712)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #8 pc 000000000010486c /system/lib64/libart.so (art::CheckJNI::CallStaticIntMethodV(_JNIEnv*, _jclass*, _jmethodID*, std::__va_list)+84)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #9 pc 0000000000013d98 /data/app/com.tencent.mmkvdemo-OBvcKxhJiUa4bpP_e6h-xg==/lib/arm64/libmmkv.so (_JNIEnv::CallStaticIntMethod(_jclass*, _jmethodID*, ...)+216)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #10 pc 000000000001408c /data/app/com.tencent.mmkvdemo-OBvcKxhJiUa4bpP_e6h-xg==/lib/arm64/libmmkv.so (mmkv::onContentChangedByOuterProcess(std::__ndk1::basic_string<char, std::__ndk1::char_traits, std::__ndk1::allocator> const&)+100)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #11 pc 000000000001cccc /data/app/com.tencent.mmkvdemo-OBvcKxhJiUa4bpP_e6h-xg==/lib/arm64/libmmkv.so (MMKV::notifyContentChanged()+48)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #12 pc 000000000001caec /data/app/com.tencent.mmkvdemo-OBvcKxhJiUa4bpP_e6h-xg==/lib/arm64/libmmkv.so (MMKV::checkLoadData()+312)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #13 pc 000000000001e094 /data/app/com.tencent.mmkvdemo-OBvcKxhJiUa4bpP_e6h-xg==/lib/arm64/libmmkv.so (MMKV::getDataForKey(std::__ndk1::basic_string<char, std::__ndk1::char_traits, std::__ndk1::allocator> const&)+44)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #14 pc 000000000001fb4c /data/app/com.tencent.mmkvdemo-OBvcKxhJiUa4bpP_e6h-xg==/lib/arm64/libmmkv.so (MMKV::getInt32ForKey(std::__ndk1::basic_string<char, std::__ndk1::char_traits, std::__ndk1::allocator> const&, int)+92)
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #15 pc 00000000000152d8 /data/app/com.tencent.mmkvdemo-OBvcKxhJiUa4bpP_e6h-xg==/lib/arm64/libmmkv.so
2020-02-27 09:56:29.974 6152-6152/? A/DEBUG: #16 pc 000000000000f8d8 /data/app/com.tencent.mmkvdemo-OBvcKxhJiUa4bpP_e6h-xg==/oat/arm64/base.odex (offset 0xf000)
2020-02-27 09:56:30.482 692-692/? E/qdlights: set_light_backlight_10000stage: brightness 334:

[lingol]

2020-02-27 09:56:29.964 6152-6152/? A/DEBUG: Abort message: 'java_vm_ext.cc:534] JNI DETECTED ERROR IN APPLICATION: the return type of CallStaticIntMethodV does not match void com.tencent.mmkv.MMKV.onContentChangedByOuterProcess(java.lang.String)'

Update to the latest version(v1.0.24) and try again. It's a typo error.