Hi,
I'm writing a program in C++ and trying to embed a Neo4j-Database. I
successfully created some JNI-bindings to use the Neo4j-classes in C++,
started a JVM-instance and set up an instance of a GraphDatabaseFactory.
Though, the call to newEmbeddedDatabase("testdb") fails somewhere deep
inside the JVM, and I'm not getting any exception, error-message or log
that gives me a hint what is going on. I thought that I may get some
further hints when I pack the newEmbeddedDatabase-call inside a method of a
java-class, create a jar out of it (that now also contains the neo4j-jars),
create the JNI-bindings for that class and call that new method from C++.
Turns out that this also crashes, although it created the testdb-directory
and wrote the messages.log up to the "Network information:", so at least it
does something.
I only have little knowledge of the JVM and JNI, so there may be a thousand
reasons why it fails (wrong / missing arguments in the jvm-options, some
kind of threading-issue, maybe some errors in my jni-bindings), and I'm not
going to elaborate all of them, as this is more an experiment than a real
use-case.
But out of curiosity, if someone managed it to start a Neo4j-instance via
JNI, I would be glad to get some insights of the configuration.
I'm adding the output of the messages.log, as it should contain all
necessary informations (java 7, mac os 10.9, neo4j 2.1.6 CE)
2015-01-24 00:40:48.567+0000 INFO [org.neo4j]: No locking implementation
specified, defaulting to 'community'
2015-01-24 00:40:48.643+0000 INFO [org.neo4j]: --- INITIALIZED diagnostics
START ---
2015-01-24 00:40:48.644+0000 INFO [org.neo4j]: Neo4j Kernel properties:
neostore.propertystore.db.mapped_memory=1285M
neostore.nodestore.db.mapped_memory=357M
neostore.relationshipstore.db.mapped_memory=1575M
neostore.propertystore.db.strings.mapped_memory=1092M
store_dir=testdb
neostore.propertystore.db.arrays.mapped_memory=1238M
ephemeral=false
2015-01-24 00:40:48.646+0000 INFO [org.neo4j]: Diagnostics providers:
org.neo4j.kernel.configuration.Config
org.neo4j.kernel.info.DiagnosticsManager
SYSTEM_MEMORY
JAVA_MEMORY
OPERATING_SYSTEM
JAVA_VIRTUAL_MACHINE
CLASSPATH
LIBRARY_PATH
SYSTEM_PROPERTIES
NETWORK
2015-01-24 00:40:48.646+0000 INFO [org.neo4j]: System memory information:
Total Physical memory: 16.00 GB
Free Physical memory: 220.08 MB
Committed virtual memory: 6.74 GB
Total swap space: 1.00 GB
Free swap space: 1.00 GB
2015-01-24 00:40:48.651+0000 INFO [org.neo4j]: JVM memory information:
Free memory: 233.76 MB
Total memory: 247.50 MB
Max memory: 3.94 GB
Garbage Collector: ParNew: [Par Eden Space, Par Survivor Space]
Garbage Collector: ConcurrentMarkSweep: [Par Eden Space, Par Survivor
Space, CMS Old Gen, CMS Perm Gen]
Memory Pool: Code Cache (Non-heap memory): committed=2.44 MB,
used=477.38 kB, max=48.00 MB, threshold=0.00 B
Memory Pool: Par Eden Space (Heap memory): committed=68.31 MB,
used=13.74 MB, max=532.56 MB, threshold=?
Memory Pool: Par Survivor Space (Heap memory): committed=8.50 MB,
used=0.00 B, max=66.50 MB, threshold=?
Memory Pool: CMS Old Gen (Heap memory): committed=170.69 MB, used=0.00
B, max=3.35 GB, threshold=0.00 B
Memory Pool: CMS Perm Gen (Non-heap memory): committed=20.75 MB,
used=6.24 MB, max=82.00 MB, threshold=0.00 B
2015-01-24 00:40:48.655+0000 INFO [org.neo4j]: Operating system
information:
Operating System: Mac OS X; version: 10.9.5; arch: x86_64; cpus: 8
Max number of file descriptors: 10240
Number of open file descriptors: 18
Process id: 20050@localhost
Byte order: LITTLE_ENDIAN
Local timezone: Europe/Berlin
2015-01-24 00:40:48.658+0000 INFO [org.neo4j]: JVM information:
VM Name: Java HotSpot(TM) 64-Bit Server VM
VM Vendor: Oracle Corporation
VM Version: 24.75-b04
JIT compiler: HotSpot 64-Bit Tiered Compilers
VM Arguments: [-Xmx4096m, -XX:+DisableExplicitGC,
-XX:+UseConcMarkSweepGC, -XX:+CMSClassUnloadingEnabled,
-XX:-OmitStackTraceInFastThrow, -Djava.awt.headless=true]
2015-01-24 00:40:48.659+0000 INFO [org.neo4j]: Java classpath:
[loader.1] file:/System/Library/Java/Extensions/dns_sd.jar
[bootstrap]
/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/resources.jar
[loader.1] file:/System/Library/Java/Extensions/j3dutils.jar
[loader.1] file:/System/Library/Java/Extensions/MRJToolkit.jar
[loader.1] file:/System/Library/Java/Extensions/jai_core.jar
[loader.1]
file:/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/ext/dnsns.jar
[bootstrap]
/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/sunrsasign.jar
[loader.1] file:/System/Library/Java/Extensions/vecmath.jar
[loader.1] file:/System/Library/Java/Extensions/libmlib_jai.jnilib
[loader.1] file:/System/Library/Java/Extensions/jai_codec.jar
[bootstrap]
/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/charsets.jar
[loader.1]
file:/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/ext/zipfs.jar
[loader.1]
file:/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/ext/localedata.jar
[bootstrap]
/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/jfr.jar
[loader.1] file:/System/Library/Java/Extensions/libJ3D.jnilib
[bootstrap]
/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/jsse.jar
[loader.1] file:/System/Library/Java/Extensions/mlibwrapper_jai.jar
[bootstrap]
/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/classes
[loader.1] file:/System/Library/Java/Extensions/QTJava.zip
[classpath + loader.0]
file:/Users/xxx/develop/SerializeToNeo4j/Neo4jTests.jar
[loader.1]
file:/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar
[bootstrap]
/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/rt.jar
[loader.1] file:/System/Library/Java/Extensions/libJ3DAudio.jnilib
[loader.1]
file:/System/Library/Java/Extensions/libAppleScriptEngine.jnilib
[loader.1]
file:/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar
[bootstrap]
/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/jce.jar
[loader.1] file:/System/Library/Java/Extensions/AppleScriptEngine.jar
[loader.1] file:/System/Library/Java/Extensions/j3daudio.jar
[loader.1] file:/System/Library/Java/Extensions/libJ3DUtils.jnilib
[loader.1] file:/System/Library/Java/Extensions/libQTJNative.jnilib
[loader.1]
file:/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib/ext/sunec.jar
[loader.1] file:/System/Library/Java/Extensions/j3dcore.jar
[loader.1] file:/usr/lib/java/libjdns_sd.jnilib
2015-01-24 00:40:48.660+0000 INFO [org.neo4j]: Library path:
/Users/xxx/Library/Developer/Xcode/DerivedData/SerializeToNeo4j-bpqlhwthxyfzapgqlrlnxberxwnh/Build/Products/Debug
/usr/lib/system/introspection
/Users/xxx/Library/Java/Extensions
/Library/Java/Extensions
/Network/Library/Java/Extensions
/System/Library/Java/Extensions
/usr/lib/java
/Users/xxx/develop/testproject
2015-01-24 00:40:48.660+0000 INFO [org.neo4j]: System.properties:
sun.boot.library.path =
/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home/jre/lib
user.country.format = DE
gopherProxySet = false
path.separator = :
file.encoding.pkg = sun.io
user.country = US
sun.os.patch.level = unknown
user.dir = /Users/xxx/develop/testproject
sun.jnu.encoding = UTF-8
sun.management.compiler = HotSpot 64-Bit Tiered Compilers
http.nonProxyHosts = local|*.local|169.254/16|*.169.254/16
user.home = /Users/xxx
user.timezone = Europe/Berlin
file.encoding = UTF-8
user.name = xxx
sun.arch.data.model = 64
user.language = en
awt.toolkit = sun.lwawt.macosx.LWCToolkit
file.separator = /
sun.io.unicode.encoding = UnicodeBig
sun.cpu.endian = little
socksNonProxyHosts = local|*.local|169.254/16|*.169.254/16
ftp.nonProxyHosts = local|*.local|169.254/16|*.169.254/16
sun.cpu.isalist =
2015-01-24 00:40:48.661+0000 INFO [org.neo4j]: Network information:
Interface en0:
address: xxx
address: xxx
Interface lo0:
address: fe80:0:0:0:0:0:0:1%1
address: 0:0:0:0:0:0:0:1
address: 127.0.0.1
--
You received this message because you are subscribed to the Google Groups
"Neo4j" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
