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Hi Peter,<br>
<br>
I use the various Genymotion VMs for debugging Android apps.<br>
These VMs have the very useful feature 'Shared folders'.<br>
i.e. at VirtualBox VM's settings you can define a shared folder from
host OS<br>
and see it inside the Android environment as mounted read/write
folder.<br>
<br>
This can be help a lot during testing large mapsforge maps or GH
graphs.<br>
They can remain at host OS disk and not needed to copy them to
device / emulator sdcard.<br>
With the Mapsforge map library this feature works fine.<br>
<br>
But when I try loading a graph that exists at this read/write
mounted folder the following exceptions are thrown:<br>
<br>
Couldn't map buffer 0 of 31 at position 100 for 32505756 bytes with
offset 100, new fileLength:32505956<br>
java.lang.RuntimeException: Couldn't map buffer 0 of 31 at position
100 for 32505756 bytes with offset 100, new fileLength:32505956<br>
at
com.graphhopper.storage.MMapDataAccess.mapIt(MMapDataAccess.java:159)<br>
at
com.graphhopper.storage.MMapDataAccess.loadExisting(MMapDataAccess.java:241)<br>
at
com.graphhopper.storage.GraphHopperStorage.loadExisting(GraphHopperStorage.java:1355)<br>
at com.graphhopper.GraphHopper.load(GraphHopper.java:670)<br>
...<br>
Caused by: java.io.IOException: mmap failed: EINVAL (Invalid
argument)<br>
at java.nio.MemoryBlock.mmap(MemoryBlock.java:119)<br>
at java.nio.FileChannelImpl.map(FileChannelImpl.java:253)<br>
at
com.graphhopper.storage.MMapDataAccess.newByteBuffer(MMapDataAccess.java:177)<br>
at
com.graphhopper.storage.MMapDataAccess.mapIt(MMapDataAccess.java:151)<br>
... 14 more<br>
Caused by: libcore.io.ErrnoException: mmap failed: EINVAL (Invalid
argument)<br>
at libcore.io.Posix.mmap(Native Method)<br>
at libcore.io.ForwardingOs.mmap(ForwardingOs.java:94)<br>
at java.nio.MemoryBlock.mmap(MemoryBlock.java:116)<br>
... 17 more<br>
<br>
<br>
<div class="moz-signature">-- <br>
<font color="#000000">Emux</font><br>
<a href="http://wiki.openstreetmap.org/wiki/Cruiser">Cruiser</a> -
<a
href="http://wiki.openstreetmap.org/wiki/Atlas_%28navigation_application%29">Atlas</a></div>
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