[android] fix offline region download crashes #6293

ivovandongen · 2016-09-08T15:54:15Z

tobrun · 2016-09-08T16:10:45Z

.../android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/net/ConnectivityReceiver.java

+            //Register new instance
+            INSTANCE = new ConnectivityReceiver(context);
+            context.registerReceiver(INSTANCE, new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE"));
+


Do we ever unregister the broadcast receiver?

No. I think this should remain active to facilitate background activity. We can unregister when/if MapboxAccountManager is released if needed. Why?

jfirebaugh · 2016-09-12T17:07:19Z

platform/android/src/jni.cpp

@@ -1515,10 +1515,12 @@ void setOfflineRegionObserver(JNIEnv *env, jni::jobject* offlineRegion_, jni::jo
            }

            // Error object
-            jni::jobject* jerror = &jni::NewObject(*env2, *offlineRegionErrorClass, *offlineRegionErrorConstructorId);


Did you try using jni::PushLocalFrame here? I'm curious if that alone would have fixed the issue.

Tried it (again just now). But it doesn't help. Keeps crashing on:

********** Crash dump: ********** Build fingerprint: 'google/bullhead/bullhead:7.0/NRD90M/3085278:user/release-keys' pid: 8721, tid: 10314, name: DefaultFileSour >>> com.mapbox.mapboxsdk.testapp <<< signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr -------- Stack frame #00 pc 00049d94 /system/lib/libc.so (tgkill+12) Stack frame #01 pc 00047533 /system/lib/libc.so (pthread_kill+34) Stack frame #02 pc 0001d885 /system/lib/libc.so (raise+10) Stack frame #03 pc 000193d1 /system/lib/libc.so (__libc_android_abort+34) Stack frame #04 pc 00017014 /system/lib/libc.so (abort+4) Stack frame #05 pc 0001b87f /system/lib/libc.so (__libc_fatal+22) Stack frame #06 pc 000195cb /system/lib/libc.so (__assert2+18) Stack frame #07 pc 003a235f /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine abort_message at /Volumes/Android/buildbot/src/android/ndk-r12-release/ndk/sources/cxx-stl/llvm-libc++abi/libcxxabi/src/abort_message.cpp:74 Stack frame #08 pc 003a2447 /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine default_terminate_handler() at /Volumes/Android/buildbot/src/android/ndk-r12-release/ndk/sources/cxx-stl/llvm-libc++abi/libcxxabi/src/cxa_default_handlers.cpp:68 Stack frame #09 pc 003a0a31 /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine std::__terminate(void (*)()) at /Volumes/Android/buildbot/src/android/ndk-r12-release/ndk/sources/cxx-stl/llvm-libc++abi/libcxxabi/src/cxa_handlers.cpp:68 Stack frame #10 pc 003a034b /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so (__cxa_throw+122): Routine __cxxabiv1::failed_throw(__cxxabiv1::__cxa_exception*) at /Volumes/Android/buildbot/src/android/ndk-r12-release/ndk/sources/cxx-stl/llvm-libc++abi/libcxxabi/src/cxa_exception.cpp:149 Stack frame #11 pc 00144c68 /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine jni::CheckJavaException(_JNIEnv&) at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../mason_packages/headers/jni.hpp/2.0.0/include/jni/errors.hpp:69 (discriminator 2) Stack frame #12 pc 0014615c /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine std::__ndk1::__unique_if<mbgl::HTTPRequest>::__unique_single std::__ndk1::make_unique<mbgl::HTTPRequest, _JNIEnv&, mbgl::Resource const&, std::__ndk1::function<void (mbgl::Response)>&>(_JNIEnv&, mbgl::Resource const&, std::__ndk1::function<void (mbgl::Response)>&) at /Users/ivo/git/mapbox-gl-native/mason_packages/osx-x86_64/android-ndk/arm-9-r12b/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../include/c++/4.9.x/memory:3047 (discriminator 34) Stack frame #13 pc 00152464 /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine mbgl::OnlineFileSource::Impl::activateRequest(mbgl::OnlineFileRequest*) at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/default/online_file_source.cpp:99 Stack frame #14 pc 00152110 /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine mbgl::OnlineFileSource::Impl::activatePendingRequest() at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/default/online_file_source.cpp:117 Stack frame #15 pc 001529f4 /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine operator() at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/default/online_file_source.cpp:101 Stack frame #16 pc 0015289c /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine _ZNSt6__ndk18__invokeIRZN4mbgl16OnlineFileSource4Impl15activateRequestEPNS1_17OnlineFileRequestEEUlNS1_8ResponseEE_JS6_EEEDTclclsr3std6__ndk1E7forwardIT_Efp_Espclsr3std6__ndk1E7forwardIT0_Efp0_EEEOS9_DpOSA_ at /Users/ivo/git/mapbox-gl-native/mason_packages/osx-x86_64/android-ndk/arm-9-r12b/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../include/c++/4.9.x/__functional_base:413 Stack frame #17 pc 00146364 /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine mbgl::HTTPRequest::async::{lambda()#1}::operator()() const at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/android/src/http_file_source.cpp:46 (discriminator 1) Stack frame #18 pc 0014229c /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine mbgl::util::RunLoop::Impl::processRunnables() at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/android/src/run_loop.cpp:180 Stack frame #19 pc 00142828 /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine mbgl::util::RunLoop::run() at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/android/src/run_loop.cpp:229 (discriminator 2) Stack frame #20 pc 0014b8c8 /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine void mbgl::util::Thread<mbgl::DefaultFileSource::Impl>::run<std::__ndk1::tuple<std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char> > const&, unsigned long long&>, 0u, 1u>(std::__ndk1::tuple<std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char> > const&, unsigned long long&>&&, std::__ndk1::integer_sequence<unsigned int, 0u, 1u>) at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../src/mbgl/util/thread.hpp:111 Stack frame #21 pc 0014b838 /data/app/com.mapbox.mapboxsdk.testapp-2/lib/arm/libmapbox-gl.so: Routine operator() at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../src/mbgl/util/thread.hpp:95 (discriminator 1) Stack frame #22 pc 00047003 /system/lib/libc.so (_ZL15__pthread_startPv+22) Stack frame #23 pc 00019e1d /system/lib/libc.so (__start_thread+6)

Ok, well, I'm really skeptical about switching everything from PushLocalFrame/PopLocalFrame to DeleteLocalRef. My hunch:

PushLocalFrame throwing OutOfMemoryError is a symptom of local references leaking elsewhere. It just happens to be the place where hit the ceiling.

Switching to DeleteLocalRef happens to prevent hitting the ceiling, because allocations/deallocations are slightly more granular, but doesn't fix the underlying leak.

@jfirebaugh You were right off course, PushLocalFrame was not the issue, my understanding of it was. Found a way to dump the reference table and noticed that the references weren't cleared properly because I didn't store the unique_ptr and the frame got deleted too soon.

Good news is that the local reference table doesn't contain any leaks (in this part). Looks like this during download / offline situations now:

--- reference table dump --- local reference table dump: Last 3 entries (of 3): 2: 0x6f827b00 java.lang.Class<android.os.Debug> 1: 0x12f50088 byte[] (25 elements) 0: 0x12c88fa0 com.mapbox.mapboxsdk.offline.OfflineRegion Summary: 1 of com.mapbox.mapboxsdk.offline.OfflineRegion 1 of java.lang.Class 1 of byte[] (25 elements)

Still running into issues on re-enabling the connection though. Besides the SQLite WAL exceptions, this one is most prevalent:

09-14 12:23:08.038 5269-5269/? A/DEBUG: Abort message: '/Volumes/Android/buildbot/src/android/ndk-r12-release/ndk/sources/cxx-stl/llvm-libc++abi/libcxxabi/src/abort_message.cpp:74: void abort_message(const char *, ...): assertion "terminating with uncaught exception of type std::range_error: wstring_convert: from_bytes error" failed' ********** Crash dump: ********** Build fingerprint: 'google/bullhead/bullhead:7.0/NRD90M/3085278:user/release-keys' pid: 3666, tid: 3819, name: DefaultFileSour >>> com.mapbox.mapboxsdk.testapp <<< signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr -------- Stack frame #00 pc 00049d94 /system/lib/libc.so (tgkill+12) Stack frame #01 pc 00047533 /system/lib/libc.so (pthread_kill+34) Stack frame #02 pc 0001d885 /system/lib/libc.so (raise+10) Stack frame #03 pc 000193d1 /system/lib/libc.so (__libc_android_abort+34) Stack frame #04 pc 00017014 /system/lib/libc.so (abort+4) Stack frame #05 pc 0001b87f /system/lib/libc.so (__libc_fatal+22) Stack frame #06 pc 000195cb /system/lib/libc.so (__assert2+18) Stack frame #07 pc 003a6adf /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine abort_message at /Volumes/Android/buildbot/src/android/ndk-r12-release/ndk/sources/cxx-stl/llvm-libc++abi/libcxxabi/src/abort_message.cpp:74 Stack frame #08 pc 003a6ba7 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine default_terminate_handler() at /Volumes/Android/buildbot/src/android/ndk-r12-release/ndk/sources/cxx-stl/llvm-libc++abi/libcxxabi/src/cxa_default_handlers.cpp:63 Stack frame #09 pc 003a51b1 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine std::__terminate(void (*)()) at /Volumes/Android/buildbot/src/android/ndk-r12-release/ndk/sources/cxx-stl/llvm-libc++abi/libcxxabi/src/cxa_handlers.cpp:68 Stack frame #10 pc 003a4acb /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so (__cxa_throw+122): Routine __cxxabiv1::failed_throw(__cxxabiv1::__cxa_exception*) at /Volumes/Android/buildbot/src/android/ndk-r12-release/ndk/sources/cxx-stl/llvm-libc++abi/libcxxabi/src/cxa_exception.cpp:149 Stack frame #11 pc 0004b48c /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine std::__ndk1::wstring_convert<std::__ndk1::codecvt_utf8_utf16<char16_t, 1114111ul, (std::__ndk1::codecvt_mode)0>, char16_t, std::__ndk1::allocator<char16_t>, std::__ndk1::allocator<char> >::from_bytes(char const*, char const*) at /Users/ivo/git/mapbox-gl-native/mason_packages/osx-x86_64/android-ndk/arm-9-r12b/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../include/c++/4.9.x/locale:3909 (discriminator 1) Stack frame #12 pc 0004b0c4 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine std::__ndk1::wstring_convert<std::__ndk1::codecvt_utf8_utf16<char16_t, 1114111ul, (std::__ndk1::codecvt_mode)0>, char16_t, std::__ndk1::allocator<char16_t>, std::__ndk1::allocator<char> >::from_bytes(std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char> > const&) at /Users/ivo/git/mapbox-gl-native/mason_packages/osx-x86_64/android-ndk/arm-9-r12b/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../include/c++/4.9.x/locale:3786 (discriminator 3) Stack frame #13 pc 00146e74 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine jni::Object<jni::StringTag> jni::Make<jni::Object<jni::StringTag>, _JNIEnv&, std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char> >&>(_JNIEnv&, std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char> >&) at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../mason_packages/headers/jni.hpp/2.0.0/include/jni/make.hpp:10 (discriminator 2) Stack frame #14 pc 001487e0 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine std::__ndk1::__unique_if<mbgl::HTTPRequest>::__unique_single std::__ndk1::make_unique<mbgl::HTTPRequest, _JNIEnv&, mbgl::Resource const&, std::__ndk1::function<void (mbgl::Response)>&>(_JNIEnv&, mbgl::Resource const&, std::__ndk1::function<void (mbgl::Response)>&) at /Users/ivo/git/mapbox-gl-native/mason_packages/osx-x86_64/android-ndk/arm-9-r12b/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../include/c++/4.9.x/memory:3047 (discriminator 46) Stack frame #15 pc 00155fb8 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine mbgl::OnlineFileSource::Impl::activateRequest(mbgl::OnlineFileRequest*) at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/default/online_file_source.cpp:101 Stack frame #16 pc 00155c64 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine mbgl::OnlineFileSource::Impl::activatePendingRequest() at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/default/online_file_source.cpp:119 Stack frame #17 pc 00156548 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine operator() at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/default/online_file_source.cpp:103 Stack frame #18 pc 001563f0 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine _ZNSt6__ndk18__invokeIRZN4mbgl16OnlineFileSource4Impl15activateRequestEPNS1_17OnlineFileRequestEEUlNS1_8ResponseEE_JS6_EEEDTclclsr3std6__ndk1E7forwardIT_Efp_Espclsr3std6__ndk1E7forwardIT0_Efp0_EEEOS9_DpOSA_ at /Users/ivo/git/mapbox-gl-native/mason_packages/osx-x86_64/android-ndk/arm-9-r12b/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../include/c++/4.9.x/__functional_base:413 Stack frame #19 pc 001489e8 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine mbgl::HTTPRequest::async::{lambda()#1}::operator()() const at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/android/src/http_file_source.cpp:47 (discriminator 1) Stack frame #20 pc 001444a0 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine mbgl::util::RunLoop::Impl::processRunnables() at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/android/src/run_loop.cpp:180 Stack frame #21 pc 00144a2c /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine mbgl::util::RunLoop::run() at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../platform/android/src/run_loop.cpp:229 (discriminator 2) Stack frame #22 pc 0014e784 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine void mbgl::util::Thread<mbgl::DefaultFileSource::Impl>::run<std::__ndk1::tuple<std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char> > const&, unsigned long long&>, 0u, 1u>(std::__ndk1::tuple<std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char> > const&, unsigned long long&>&&, std::__ndk1::integer_sequence<unsigned int, 0u, 1u>) at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../src/mbgl/util/thread.hpp:114 Stack frame #23 pc 0014e6f4 /data/app/com.mapbox.mapboxsdk.testapp-1/lib/arm/libmapbox-gl.so: Routine operator() at /Users/ivo/git/mapbox-gl-native/build/android-arm-v7/Debug/../../../src/mbgl/util/thread.hpp:98 (discriminator 1) Stack frame #24 pc 00047003 /system/lib/libc.so (_ZL15__pthread_startPv+22) Stack frame #25 pc 00019e1d /system/lib/libc.so (__start_thread+6)

tobrun

Minor nit comments, looking great otherwise!

tobrun · 2016-09-21T09:38:32Z

.../android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/net/ConnectivityReceiver.java

+
+    private List<ConnectivityListener> listeners = new CopyOnWriteArrayList<>();
+
+


tobrun · 2016-09-21T09:43:22Z

.../android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/net/ConnectivityListener.java

+ */
+public interface ConnectivityListener {
+
+    void onNetworkStateChanged(boolean connected);


nit: javadoc in case of public API interface

tobrun · 2016-09-21T09:47:51Z

...id/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/net/NativeConnectivityListener.java

+class NativeConnectivityListener implements ConnectivityListener {
+
+    //TODO: Centralize this
+    static {


tobrun · 2016-09-21T09:48:26Z

platform/android/src/connectivity_listener.cpp

+            "finalize",
+            METHOD(&ConnectivityListener::onConnectivityStateChanged, "nativeOnConnectivityStateChanged")
+        );
+


ivovandongen · 2016-09-21T10:40:39Z

@tobrun Thanks for the review, made the requested changes

jfirebaugh · 2016-09-21T18:10:52Z

platform/default/online_file_source.cpp

+        assert(pendingRequestsMap.size() == pendingRequestsList.size());
+    }
+
+    bool isScheduled(OnlineFileRequest* request) {


Should be isPending. "Scheduled" means the timer is running -- it's a state that precedes "Pending".

ivovandongen · 2016-09-22T08:31:26Z

@jfirebaugh Thanks for the review. I applied the requested changes.

zugaldia · 2016-09-26T13:45:53Z

@ivovandongen 🎉 .

ivovandongen added bug Android Mapbox Maps SDK for Android ⚠️ DO NOT MERGE Work in progress, proof of concept, or on hold labels Sep 8, 2016

ivovandongen added this to the android-v4.2.0 milestone Sep 8, 2016

ivovandongen self-assigned this Sep 8, 2016

tobrun reviewed Sep 8, 2016
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ivovandongen force-pushed the 6210-offline-connectivity-crash branch from d9bb274 to 7a1c9f9 Compare September 9, 2016 11:24

jfirebaugh reviewed Sep 12, 2016
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jfirebaugh mentioned this pull request Sep 12, 2016

Crash if the connection is no longer available once an offline downloaded has started #6210

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ivovandongen force-pushed the 6210-offline-connectivity-crash branch 2 times, most recently from e16d266 to eb89202 Compare September 16, 2016 13:55

ivovandongen removed the ⚠️ DO NOT MERGE Work in progress, proof of concept, or on hold label Sep 19, 2016

ivovandongen changed the title ~~[android] set connectivity state pro-actively~~ [android] fix offline region download crashes Sep 20, 2016

ivovandongen force-pushed the 6210-offline-connectivity-crash branch 4 times, most recently from 864f57b to 13b0bc3 Compare September 21, 2016 09:24

tobrun suggested changes Sep 21, 2016

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ivovandongen force-pushed the 6210-offline-connectivity-crash branch from 13b0bc3 to 21698a5 Compare September 21, 2016 10:36

tobrun approved these changes Sep 21, 2016

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jfirebaugh suggested changes Sep 21, 2016

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ivovandongen force-pushed the 6210-offline-connectivity-crash branch from 21698a5 to aece538 Compare September 22, 2016 08:26

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ivovandongen added 2 commits September 23, 2016 10:47

[android] set connectivity state pro-actively

742d6d8

[android] timer - prevent overflow in due time

e968f4e

ivovandongen added 3 commits September 23, 2016 10:47

[android] offline - prevent OOME

71c71e4

[core] OnlineFileSource - prevent double scheduling of requests

4969043

[core] ensure network::Reachable is called only once

c4420d0

ivovandongen force-pushed the 6210-offline-connectivity-crash branch from aece538 to c4420d0 Compare September 23, 2016 08:48

ivovandongen merged commit c4420d0 into master Sep 23, 2016

ivovandongen deleted the 6210-offline-connectivity-crash branch September 23, 2016 09:13

1ec5 removed the ✓ ready for review label Oct 5, 2016

cammace mentioned this pull request Oct 31, 2016

OfflineMode issues when connected to internal network #6025

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[android] fix offline region download crashes #6293

[android] fix offline region download crashes #6293

ivovandongen commented Sep 8, 2016 •

edited by jfirebaugh

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ivovandongen commented Sep 22, 2016

zugaldia commented Sep 26, 2016


		private List<ConnectivityListener> listeners = new CopyOnWriteArrayList<>();

[android] fix offline region download crashes #6293

[android] fix offline region download crashes #6293

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