Anr

[lz0928]

The language of MMKV

Java

The version of MMKV

v1.3.1

The platform of MMKV

Android

The installation of MMKV

Maven

What's the issue?

MMKV.initialize(context)执行了20秒才初始化完成

下面是log
行 21821: 10-23 19:23:03.690 4025 4025 I MMKV : Disable checkProcessMode()
行 26483: 10-23 19:23:22.438 4025 4025 I MMKV : current API level = 29, libc++_shared=0
行 26487: 10-23 19:23:22.439 4025 4025 I MMKV : MMKV.cpp:164::initialize version v1.3.1, page size 4096, arch arm64-v8a
行 26489: 10-23 19:23:22.439 4025 4025 I MMKV : MMKV.cpp:175::initialize armv8 AES instructions is supported
行 26490: 10-23 19:23:22.439 4025 4025 I MMKV : MMKV.cpp:183::initialize armv8 CRC32 instructions is supported
行 26492: 10-23 19:23:22.440 4025 4025 I MMKV : MMKV.cpp:207::initializeMMKV root dir: /data/user/0/com.example.app/files/mmkv

[lingol]

The logs mean there's a 20s gap between Java code & Native code. It provides little useful info if not any.
You need to catch the very method that costs max time with precise callstacks.

[lz0928]

native: #00 pc 00000000000868bc /apex/com.android.runtime/lib64/bionic/libc.so (syscall+28)
native: #1 pc 000000000014e1f4 /apex/com.android.runtime/lib64/libart.so (art::ConditionVariable::WaitHoldingLocks(art::Thread*)+148)
native: #2 pc 00000000003ced94 /apex/com.android.runtime/lib64/libart.so (art::JNI::GetStringUTFChars(_JNIEnv*, _jstring*, unsigned char*)+452)
native: #3 pc 0000000000045518 /system/priv-app/xxxxx/xxxxx.apk!libmmkv.so (offset 7c7000) (???)
native: #4 pc 0000000000045434 /system/priv-app/xxxxx/xxxxx.apk!libmmkv.so (offset 7c7000) (???)
native: #5 pc 000000000004215c /system/priv-app/xxxxx/xxxxx.apk!libmmkv.so (offset 7c7000) (???)
native: #6 pc 0000000000020318 /data/dalvik-cache/arm64/system@priv-app@xxxxx@xxxxx.apk@classes.dex (art_jni_trampoline+216)
native: #7 pc 00000000001395b8 /apex/com.android.runtime/lib64/libart.so (art_quick_invoke_static_stub+568)
native: #8 pc 000000000014800c /apex/com.android.runtime/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+276)
native: #9 pc 00000000002eccc0 /apex/com.android.runtime/lib64/libart.so (art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*)+384)
native: #10 pc 00000000002e7f20 /apex/com.android.runtime/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+892)
native: #11 pc 00000000005ae178 /apex/com.android.runtime/lib64/libart.so (MterpInvokeStatic+372)
native: #12 pc 0000000000133994 /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_static+20)
native: #13 pc 00000000002174fa /system/priv-app/xxxxx/xxxxx.apk (com.tencent.mmkv.MMKV.c+170)
native: #14 pc 00000000002bdfd4 /apex/com.android.runtime/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEbb.llvm.399316094552197814+240)
native: #15 pc 000000000059cc0c /apex/com.android.runtime/lib64/libart.so (artQuickToInterpreterBridge+1032)
native: #16 pc 0000000000142468 /apex/com.android.runtime/lib64/libart.so (art_quick_to_interpreter_bridge+88)
native: #17 pc 00000000001395b8 /apex/com.android.runtime/lib64/libart.so (art_quick_invoke_static_stub+568)
native: #18 pc 000000000014800c /apex/com.android.runtime/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+276)
native: #19 pc 00000000002eccc0 /apex/com.android.runtime/lib64/libart.so (art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*)+384)
native: #20 pc 00000000002e7f20 /apex/com.android.runtime/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+892)
native: #21 pc 00000000005ae178 /apex/com.android.runtime/lib64/libart.so (MterpInvokeStatic+372)
native: #22 pc 0000000000133994 /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_static+20)
native: #23 pc 00000000001e7b18 /system/priv-app/xxxxx/xxxxx.apk (d.f.g.p.c.a+976)
native: #24 pc 00000000005ab964 /apex/com.android.runtime/lib64/libart.so (MterpInvokeVirtual+1352)
native: #25 pc 0000000000133814 /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_virtual+20)
native: #26 pc 00000000001e8370 /system/priv-app/xxxxx/xxxxx.apk (d.f.g.p.f.a+208)
native: #27 pc 00000000005ab964 /apex/com.android.runtime/lib64/libart.so (MterpInvokeVirtual+1352)
native: #28 pc 0000000000133814 /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_virtual+20)
native: #29 pc 00000000001e8194 /system/priv-app/xxxxx/xxxxx.apk (d.f.g.p.g.m+128)
native: #30 pc 00000000005ab964 /apex/com.android.runtime/lib64/libart.so (MterpInvokeVirtual+1352)
native: #31 pc 0000000000133814 /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_virtual+20)
native: #32 pc 000000000022dc96 /system/priv-app/xxxxx/xxxxx.apk (f.r.j.a.a.g+26)
native: #33 pc 00000000005ad184 /apex/com.android.runtime/lib64/libart.so (MterpInvokeInterface+1788)
native: #34 pc 0000000000133a14 /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_interface+20)
native: #35 pc 00000000002cf7a4 /system/priv-app/xxxxx/xxxxx.apk (g.a.f0.run+172)
native: #36 pc 00000000005ad184 /apex/com.android.runtime/lib64/libart.so (MterpInvokeInterface+1788)
native: #37 pc 0000000000133a14 /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_interface+20)
native: #38 pc 00000000002cfdf4 /system/priv-app/xxxxx/xxxxx.apk (g.a.l0.v+256)
native: #39 pc 00000000005ab964 /apex/com.android.runtime/lib64/libart.so (MterpInvokeVirtual+1352)
native: #40 pc 0000000000133814 /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_virtual+20)
native: #41 pc 00000000002c64c4 /system/priv-app/xxxxx/xxxxx.apk (f.x.v.b.c1.n.a2.c.p0+144)
native: #42 pc 00000000005ae414 /apex/com.android.runtime/lib64/libart.so (MterpInvokeStatic+1040)
native: #43 pc 0000000000133994 /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_static+20)
native: #44 pc 00000000001bd842 /system/priv-app/xxxxx/xxxxx.apk (com.example.app..App.onCreate+170)
native: #45 pc 00000000002bdfd4 /apex/com.android.runtime/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEbb.llvm.399316094552197814+240)
native: #46 pc 000000000059cc0c /apex/com.android.runtime/lib64/libart.so (artQuickToInterpreterBridge+1032)
native: #47 pc 0000000000142468 /apex/com.android.runtime/lib64/libart.so (art_quick_to_interpreter_bridge+88)
native: #48 pc 00000000003e1b54 /system/framework/arm64/boot-framework.oat (android.app.Instrumentation.callApplicationOnCreate+52)
native: #49 pc 00000000004d3dcc /system/framework/arm64/boot-framework.oat (android.app.ActivityThread.handleBindApplication+7724)
native: #50 pc 00000000004be33c /system/framework/arm64/boot-framework.oat (android.app.ActivityThread$H.handleMessage+7004)
native: #51 pc 0000000000741ad4 /system/framework/arm64/boot-framework.oat (android.os.Handler.dispatchMessage+180)
native: #52 pc 0000000000745190 /system/framework/arm64/boot-framework.oat (android.os.Looper.loop+1504)
native: #53 pc 00000000004cbc9c /system/framework/arm64/boot-framework.oat (android.app.ActivityThread.main+764)
native: #54 pc 00000000001395b8 /apex/com.android.runtime/lib64/libart.so (art_quick_invoke_static_stub+568)
native: #55 pc 000000000014800c /apex/com.android.runtime/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+276)
native: #56 pc 00000000004bb5d8 /apex/com.android.runtime/lib64/libart.so (art::(anonymous namespace)::InvokeWithArgArray(art::ScopedObjectAccessAlreadyRunnable const&, art::ArtMethod*, art::(anonymous namespace)::ArgArray*, art::JValue*, char const*)+104)
native: #57 pc 00000000004bd17c /apex/com.android.runtime/lib64/libart.so (art::InvokeMethod(art::ScopedObjectAccessAlreadyRunnable const&, _jobject*, _jobject*, _jobject*, unsigned long)+1480)
native: #58 pc 0000000000448410 /apex/com.android.runtime/lib64/libart.so (art::Method_invoke(_JNIEnv*, _jobject*, _jobject*, _jobjectArray*)+52)
native: #59 pc 00000000000c2c34 /system/framework/arm64/boot.oat (art_jni_trampoline+180)
native: #60 pc 00000000009bdae8 /system/framework/arm64/boot-framework.oat (com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run+136)
native: #61 pc 00000000009c58c4 /system/framework/arm64/boot-framework.oat (com.android.internal.os.ZygoteInit.main+2084)
native: #62 pc 00000000001395b8 /apex/com.android.runtime/lib64/libart.so (art_quick_invoke_static_stub+568)
native: #63 pc 000000000014800c /apex/com.android.runtime/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+276)
native: #64 pc 00000000004bb5d8 /apex/com.android.runtime/lib64/libart.so (art::(anonymous namespace)::InvokeWithArgArray(art::ScopedObjectAccessAlreadyRunnable const&, art::ArtMethod*, art::(anonymous namespace)::ArgArray*, art::JValue*, char const*)+104)
native: #65 pc 00000000004bb1c8 /apex/com.android.runtime/lib64/libart.so (art::InvokeWithVarArgs(art::ScopedObjectAccessAlreadyRunnable const&, _jobject*, _jmethodID*, std::__va_list)+408)
native: #66 pc 00000000003c4b84 /apex/com.android.runtime/lib64/libart.so (art::JNI::CallStaticVoidMethodV(_JNIEnv*, _jclass*, _jmethodID*, std::__va_list)+624)
native: #67 pc 00000000000c2a6c /system/lib64/libandroid_runtime.so (_JNIEnv::CallStaticVoidMethod(_jclass*, _jmethodID*, ...)+116)
native: #68 pc 00000000000c5948 /system/lib64/libandroid_runtime.so (android::AndroidRuntime::start(char const*, android::Vectorandroid::String8 const&, bool)+776)
native: #69 pc 00000000000035b0 /system/bin/app_process64 (main+1376)
native: #70 pc 0000000000084e18 /apex/com.android.runtime/lib64/bionic/libc.so (__libc_init+108)
at com.tencent.mmkv.MMKV.jniInitialize(Native method)
at com.tencent.mmkv.MMKV.c(:5)