getCodecs fails if input file isn't on boot volume
Reported by Christopher Stawarz | April 6th, 2010 @ 01:09 PM | in 0.4.5 (closed)
The MATLAB getCodecs function (in mw_datatools/MatlabDataReader) fails with a Boost error if the data file isn't on the boot volume:
>> d1 = getCodecs('/Documents/MonkeyWorks/Data/MARIONETTE.StimulusPresentTest.mwk')
d1 =
time_us: 6450032
codec: [23x1 struct]
>> d2 = getCodecs('/Volumes/FreeAgent 2/MARIONETTE.StimulusPresentTest.mwk')
??? Unexpected Standard exception from MEX file.
What() is:boost::filesystem::rename: Cross-device link: "/Volumes/FreeAgent
2/MARIONETTE.StimulusPresentTest.mwk",
"/var/folders/v1/v1qsITo9GJezLwbJ2VOfM++++TI/-Tmp-/MARIONETTE.StimulusPresentTest.mwk"
It looks like it's trying to create a temporary file. Why?
Comments and changes to this ticket
-
Christopher Stawarz July 6th, 2010 @ 01:45 PM
- Milestone set to “0.4.5”
- State changed from “new” to “open”
- Milestone order changed from “0” to “0”
The issue is in dfindex, so it affects the Python data interface, too. The failure happens because dfindex::dfindex uses boost::filesystem::rename to move the original data file to a temporary directory (presumably on the root volume under /tmp or /var). I'm guessing that bf::rename uses POSIX rename, which doesn't work between different filesystems.
-
Christopher Stawarz July 8th, 2010 @ 12:59 PM
- State changed from “open” to “resolved”
Fixed in mw_datatools commit 6f7c995f1ac6ed2244fd0e076795baf7b756538c
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MWorks accessory libraries, build system, etc.
Christopher Stawarz