File.renameTo() and locking

Hi,
I would like to rename file, but File.renameTo() will not work if the file will be locked by some other process. If other process has locked the file, I would like to wait for it to release the lock. So I have:
FileLock lock = new RandomAccessFile(file, "rw").getChannel().lock(0L, Long.MAX_VALUE, false);
file.renameTo(destFile);
lock.release();But this does not work, because file is locked and renameTo does not work (returns false).
What can I do to lock the file myself (wait for other locks to be released) and to rename it (rename does not work when file is locked).
Regards
Pawel Stawicki

hi, I don't thik you have to lock the file yourself while renaming it because that is (from my point of view) an opperating system's job to do it.
you could maybe make a
while(! file.renameTo()){
thread.sleep(1000);
to wait till its unlocked.
I'm not sure that helps but that's just an idea

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aschmid wrote:
Yes you are right, I know it isn't supported - as so many other things but they work!
This one is notorious for working for a while, then . . . not.
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Really not much options here to backup a home with 3 Macs!?!
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Please, I do not understand your last posting very well. Did the user create a project, based on a PPT (2003 or 2007)? And he added Question slides (branded CP) to the project? What do you mean by creating questions/answers from the PPT-slides?
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File.renameTo method issue

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The program outline is as follows
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File currentFile = filesToProcess;
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The above program outline works well. However the renameTo method is not renaming the parsed files successfully on all occasions. There is no performance issue involved here as the files keep streaming in throughout the day and the program is able to handle the parsing of the file(s) in a fraction of second.
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Sundar

I am making the code more readable for you all and corrected some typo errors...
File[] filesToProcess = sourceFolder.listFiles();
int fileCount = filesToProcess.length;
for (int i=0;i<fileCount;i++) {
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}

Certifying and Locking file Invalidates Certification and Signatures in Acrobat 9.0.0

I am running Adobe Acrobat Professional 9.0.0. After creating a PDF document from within Microsoft Word, and it opens in Adobe Acrobat Professional, I performed the following steps:
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Thanks for the responses Geo & Atin,
Geo,
Maybe I'm misunderstanding what you're saying, but http://www.adobe.com/devnet/reader/articles/reader_compatibility/readercomp_digitalsignat ures.pdf seems to indicate otherwise. Specifically:
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In Acrobat 8, all signature appearances except the last one would have changed their status to "Valid with subsequent changes" (green check with a yellow warning triangle) if their certificate was still valid."
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Atin,
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Regards & thanks again,
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overwrite the approveSelection() method of your JFileChooser. in there you can do your checks before executing super.approveSelection().
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ITunes 6.0.3 destroyed my music files (mp3 and m4a).

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http://riggswerks.com/itunes/diy_gaps.gif
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For further reference (others have had similar/same issues):
http://discussions.apple.com/message.jspa?messageID=1308126#1308126
http://discussions.apple.com/message.jspa?messageID=1308121#1308121
http://discussions.apple.com/message.jspa?messageID=1308060#1308060
http://discussions.apple.com/message.jspa?messageID=1307909#1307909
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hiya!
hmmm. okay, here's a user tip on moving your music files to a different drive. can you spot anything you might have missed on the first attempt?
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love, b

Please help! Major problems (performance and lock-ups) with brand new W520 with Intel 520 SSD

My company primarily uses HP machines but I've been a long time IBM (now Lenovo) fan so I recently had IT purchase me a new Lenovo W520 (product ID 42763LU).
Once the machine arrived I had them do the following:
Remove the 500GB HDD and replace it with an Intel 520 series 240GB SSD
Remove the optical drive and install the 500GB hard drive that came with the machine in the optical bay (with the bay adapter of course)
Format both drives and put a preconfigured windows 7 64-bit image on the SSD
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8GB RAM
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Hitachi 500GB HDD (optical bay) [HTS727550A9E365]
Intel Advanced-N 6205 network adapter
TouchChip Fingerprint Scanner
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1. One of the first issues (errors) I noticed in the event viewer was errors related to the optical drive. Clearly the image they installed on the machine was not from a machine with the same hardware configuration. So, I decided to just wipe the machine and perform a fresh install of windows 7 from the disks (well, USB). After spending multiple days installing windows, performing updates, making sure all the drivers were current, and installing only the critical software I need, I was disappointed to realize that although I fixed the optical drive errors the machine was still slow, was hanging, and locking up regularly.
2. Removed the cover on the machine and removed/reinstalled the drive to verify it was secure.Everything looked good.
3. Verified the latest firmware is installed on all my Intel hardware. Everything seemed up to date.
4. I performed a number of troubleshooting steps like booting the machine with/without the battery, with/without the HDD in the optical bay, installed/removed from the docking station, etc. and none of these things helped (also a note – occasionally when running on the battery I was hearing a strange “buzz” or “static” sound coming from the area around the SSD).
5. Next I did some internet research and learned quite a few things. First, it sounds like others have had similar problems with this machine and/or SSD combo and there were quite a few options suggested to “fix” these issues. The general consensus for troubleshooting steps were:
5.1. Download and install the latest Intel chipset drivers and AHCI controller drivers (overwriting whatever windows installs during updates).This didn’t fix anything.
5.2. Turn off PCI express link state power management in the power manager. This didn’t fix anything.
5.3. Disable superfetch, prefetch, indexing, defragmentation, page file, system restore, and hibernate. A few of these were already disabled by windows so in those cases I just verified they were disabled in the services and application editor. These things may have slightly increased performance but did not fix the major hang/lockup issues I was having.
5.4. I followed online steps to edit the registry to disable the PCI link power management by adding ports, adding the required variables, and setting them all to 0. This did seem to have fixed the hangs and/or lock-ups but the machine is still much slower than I would expect (boot times are still pretty slow and it does “stutter” when I’m doing more than one thing at a time. Also a note here – I have the Intel SSD toolbox installed and I noticed that it was giving me a warning for DIPM not being optimized. I made the mistake of clicking “Tune!” and then started having the hang/lock-up issues again. I went back into the registry and sure enough the PCI link power management variables for ports 0 and 1 were set back to 1. I set them back to 0 and the hangs have gone away. I will not be “tuning” the DIPM through the Intel SSD toolbox again…
6. I also fixed a couple of other minor errors I was seeing in the event viewer by disabling benign services and/or making slight timeout modifications (I researched each issue on the internet to verify they were benign before I implemented any changes). These fixes didn't seem to do anything other than make some of the errors/warnings go away. So, the list of errors/warnings has become much smaller but I’m still getting the following (maybe an issue, maybe not?):
Event ID 37 for every processor saying that they are in a reduced performance state for xx seconds since the last report
Event ID 10002 - WLAN Extensibility Module has stopped
Event ID 4001 - WLAN AutoConfig service has successfully stopped
Event ID 27 – Intel® 82579LM Gigabit Network Connection link is disconnected
I suspect the WLAN errors have something to do with windows fighting with the Lenovo access connection tools?
7. Since the machine still seemed slow I downloaded the program AS SSD and checked the performance of the SSD. When I compared my performance numbers to the benchmark numbers I found onlineI was very surprised to discover that I’m getting about 50% of the performance that I should (values below are read/write).
Seq: 262.11 / 188.32 (s/b 504.58 / 298.28) [MB/s]
4K: 15.83 / 44.92 (s/b 21.70 / 62.60) [MB/s]
4K-64Thrd: 165.23 / 154.46 (s/b 241.38 / 234.08) [MB/s]
Acc.time: 0.218 / 0.294 (s/b .0186 / 0.208) [ms]
Score: 207 / 208 (s/b 314 / 327)
Overall Score: 533 (s/b 797)
One more note - it seems like my cooling fan is running at a high speed almost all of the time. This is probably one of my power settings (I think I have it set for max performance) but it's even doing this when there is no load (i.e. I'm using IE and just vieweing webpages - like right now).
So, I apologize for such a long post but I’ve spent countless hours researching and troubleshooting this problem and haven’t been able to figure out what the heck is wrong here. Am I missing something simple or do you guys think I have a SSD and/or problem with the machine itself? To say that any and all help would be greatly appreciated would be a massive understatement – I’m on the verge of pulling my hair out and I really need this machine working as quickly as possible!
Please let me know if you have any suggestions and/or need additional information. Thanks in advance for your help!
-Erik

Lol gotcha about the drive as an option. I didn't go SSD with mine. Do you have the latest firmware on your drive? It is supposed to be v1.97. Just checking (ah and I see item 3 so guess so). Do you have the SSD drive toolbox software installed?
http://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Solid+State+Drives+and+Cach...)
Seems some useful tools are in there. I can't say much beyond that with the drive. Oh. Why does your fan always run at high speed? Can you describe that? I mean, are we troubleshooting the right kind of issue? Is there anything else going on with your system? I saw about the reduced core speeds message. what are your system loads like? Anything causing high cpu utilization? Could be something other than the drive causing your low numbers and lockups.

A File Reference and its evolving life!

Hi all,
I've noticed something that came as a little bit of a surprise to me, but I think I have the explanation, at a hand-wavy higher level anyway. What I have not established is if this is a 'bug' or a 'feature', and if there are any ways the following issue can be avoided at the NI function/api layer.
Consider the file open and file close function. You open a file, you use the reference to the file to write/read data, then at some point you close the reference and the close function spits out the file-path. Here are a couple of tid-bits you may not be aware of (that are easy to test):
Q1) After your application opens/creates a file and starts using the file-reference to make file writes, if an external source changes the file-name of that file... guess what will happen on your next write function call?
A1:: The write successfully updates the newly re-named file with your new data without producing an error or a warning. (At least this is the case if your program is running on a vxWorks cRIO target and the file-name is changed directly on the cRIO via an FTP browser.)
Did this surprise you? It did surprise me! -My handwavy explanation is that the file-pointer is perhaps managed/maintained by the OS, so when the OS tells the file-system to rename that file, the pointer that LabVIEW holds remains valid and the contents of the memory at the pointer location was updated by the OS.
Q2) Continuing from the situation setup in Q1, after writing several new chunks of data to a file now currently named something completely different than when the file reference was originally created, you use the close function to close the file-reference. What do you expect on the file-path output from the close function?? What do you actually get??
A2:: The close function will 'happily' return the ORIGINAL file-name, not the actual file-name it has been successfully writing to(!). This has some potentially significant ramifications on how/what you can use that output for. At this point there is a ton of room for pontifications and more or less 'crazy' schemes for what one could do, but I argue that the bottom line is that your application has at that point completely lost the ability to accurately and securely track your file(s). Yes, you could list a folder and try and 'figure out' if your file-name was re-named during writing and you can in various ways make more or less good 'guesses' on which file you in reality just had open, but you can never really know for sure.
So, what do you guys think?? Is the behavior of returning the (incorrect) original file-path when you close the handle a BUG or a FEATURE?? Would it not be possible for LabVIEW to read back the data contained in the (OS?) pointer location and as needed update the file out path data when it closes a reference? Should we not EXPECT that this would be the behavior?
Q3) Again, continuning from the above situation, lets assume we are back at the state in Q1, writing data to a (re)named file. What happens if the file is deleted by an external process? What happens to the file reference? File function calls using the reference?
A3:: This one is less surprising. The file reference remains 'valid' (because it is a valid reference), but depending on the file function you are calling, you will get error such as error 6 (binary write reports this), or error 4 (a TDMS write will report this error), etc. So as long as you don't rely on file ref-num tests to establish if you are good to go with a file-write or file-action, you should be safe to recover in an appropriate way.. Just don't forget to close the file-reference, even if the file is 'gone', the reference will still remain in memory until you 'close' it (with an error)(?I might be wrong about this last part?)
I am not sure if the above is possible on e.g. Windows, Windows would probably prevent you from re-naming a file that has an open file-handle to it, but this is definitley observable on at least vxWorks cRIO targets. (I don't have PharLap ETS or RTLinux devices so I can't test on those targets.. if you want to test its pretty straigth forward to make a simple test app for it.)
[begin rant-mode related to why I found this out and why this behavior BITES]
There are situations where the above situation could cause some rather annoying issues that, for somewhat contrived reasons related to cRIO file API performance, CPU and memory resource management, are non-trivial to work around. for example, using the NI "list folder" to listing folders take a very hefty chunk of time at 100% cpu that you cannot break up, so polling/listing folders after every file update (or even on a less regular interval) is a big challenge, and if you are really unlucky (or didn't know any better) and gave the list command in a folder with 1000's of files (as opposed to less than about 100 files), the list will lock your CPU at 100% for 10's of seconds... Therefore, you might be tempted to maintain your own look-up table of files so that your application can upload/push/transfer and/or delete files as dictated by your application specific conditions... except that only works until some prankster or well-intention person remotes in and starts changing file-names, because then your carefully maintained list of file-names/paths' suddenly fall appart.
[\end rant]
QFang
CLD LabVIEW 7.1 to 2013

Hey guys, thanks for turning out your comments on this thread!
-Deny Access : still able to re-name (and delete) the file via FTP browser (didn't test other file avenues). I think this is for the same reason that NI vxWorks targets (such as cRIO-9014) do not support the concept of different users with different rights, as such, everyone have access rights to everything at the OS level. Another issue for me would be that "Deny Access" does not work on TDMS file references, so even if it worked, it would not help me.
--> I strongly suspect that these things are non-issues or issues that can be properly managed, on the new NI LinuxRT targets since (the ftp is disabled by default) it supports user accounts and user restrictions on files/folders. The controller could simply create the files in a tree where 'nobody else' has write access.
Obviously nobody should mess around with files on a (running) cRIO, but customers don't always do what they are supposed to do.
As far as the 'resources' or overhead to update the file-refnum with the new information, this would not be needed to be done in a polling fashion, simply, when the file-close function is called, as part of that call it updates its internal register from the pointer data, so this should be a low overhead operation I would think? If that is a true concern, a boolean input defaulting to not updating or a separate 'advanced close' could be created?
I've included a zip with the LV2013 project and test VI's (one for tdms one for binary) that I've used. nothing fancy, but in the interest of full disclosure. The snippet is the 'binary file' test vi, in case you just want a quick peak:
Steve Bird's findings of (yet) another behavior on Pharlap systems is also very interesting, I think!!
[EDIT] JUST TO CLARIFY, on vxWorks, the re-named file keeps being successfully written to, unlike the PharLaps' empty file that Steve Bird found.
QFang
CLD LabVIEW 7.1 to 2013
Attachments:
cRIO Tests.7z ‏30 KB

InDesign file saving and exporting S-L-O-W.

I am a designer using the InDesign/InCopy layout workflow. After my last post things were working pretty good for awhile. But now it is taking more than an hour to save over the network. I tried putting everything in the same folder on the network (links and all) and it still took me more than an hour just to relink a placed InCopy story. I am going mad. A week overdue for my first draft and I can't do anything. So today I decided to just use the package workflow to speed things up. However it still takes as long to create assignments even after I have saved the InDesign file and links to my desktop.
Is there any possibility this is caused by using the last document and saving as new name? Even if I have unlinked all assignments and stories first?
I've tried saving as an inx file but I lock up.
Thanks for your help in advance,
Holly

It turns out that is the issue. AnneMarie, were you able to find the other thread? I thought my problem was solved by deleting the random 40,000+ lines of garbage using a text edit program. But the random lines are re-generated each time I save the file in indesign. My IT Manager thinks it has to do with the InCopy plugin. In analyzing the 'garbage lines', here is what we do know. Each time a body of text is saved using the InCopy plugin, it is generating 62 unique id's of random URLs, and multiplies those id's 657 times...thus creating 40,000+ lines of garbage that bogs down the file. The urls are not used anywhere in my Indesign file, so we can't figure how the plugin is gaining access to the URLs to generate them.
We tested it on a brand new block of text in the file that had never been exported as an Incopy file (working off the desktop the whole time) - and the resulting .icml file still had similar URLs generated (all 40,000+). The plugin version is 6.0.0.352. Indesign Application version is CS4 6.0.4.578. Here is one URL pulled from the file: <HyperlinkURLDestination Self="u54e9" Name="URL 275" DestinationURL="http://www.evanta.com/details_popup.php?cmd=speaker&id=6963" Hidden="false" DestinationUniqueKey="694"/>
Any ideas on how to stop the URLs from generating each time I have to save the file?
Pelagia

Printing FILE NAME and DATE PRINTED?

when i was on a mac i used to be able to have a default in the printer dialog so that every page printed showed the file name and the data printed. i would like to do this in the mac but i am guessing that this has to be done in either the specialized software dialog box or perhaps in a mac dialog box?
in any event, can anyone help me figure out where i might find a place to do this? i haveadobe acrobat but i wold also like to do it in something like Preview as well.
TIA

hotwheels 22 wrote:
if i have documents coming that i print for a project and these are quite naturally coming from different software it i have no way now of being able to FIND this file in my computer when i am looking at it.
Consider using Find from the File menu or Spotlight to search for the document. In one of your previous posts, you stated that you name documents with a date and name. Then perhaps search for the name. Also, with your method of naming documents, if the document is a letter, wouldn't the date on the letter and the person to whom the letter is addressed to give clues to the filename and thus finding it on your computer?
this is a major organizational issue over here and customizing a template for all my various software should be unnecessary IMHO.
I do not know how many documents you deal with but I do know that there a many organizations that deal with billions of documents. In addition, if you share documents with others or others with you, there is not a filenaming method that works for everyone. People adapt to each other. A date in a filename could have several forms such as month-date-year or year-month-date, two digits or four digits for year and so on and so forth.
Are you saying it IS necessary to have this dual file type that has a Pages document which then prints a PDF?
No. Please re-read what I wrote and the Pages Help Center articles.
also, is there in fact a way to save a PDF back out as a Pages document?
Yes, re-read what I wrote (that which you quoted).
"Acrobat has the capability to save a PDF in other formats such as Microsoft Word, which can be opened in Pages. That said IMO, a separate Pages document for each "custom" letter/report would not be necessary."
alternatively i guess i could create a Pages TEMPLATE - that has a DATE in the header that automatically updates .../but/ i am realizing that this has the unfortunate consequence of having the DATE updated if i open the Pages document again
But that is what you stated you wanted because
...and try to remember to SAVE AS this document with another name with the original FILE NAME but a NEW DATE. this does not always work and sometimes i write over the original accidentally.
anyway, maybe the answer here is to create a Template for any new document type and simply use this template any time i need to create a PDF and then not save or delete the original Pages document but this seems a bit hairy and dangerous in terms of possibly losing a file if i forget to print to PDF or something.
You have redundant backups, yes?
It seems that your understanding of a template is different from what it actually is, its purpose and its use. If you have not already done so, try using one of the included Pages templates to create a document that you would reuse to get a better understanding of how it works and to help determine your workflow. What you wrote in the last post seems to be a lot of what ifs but not hands on experience with the software itself. My response was based on my experience of using many types of software and in particular to your questions, Pages and Acrobat. Perhaps you will find better responses in the Pages forum and for Acrobat there is a forum at the Adobe web site.
is there a lock file functionality in Pages in Mountain Lion or was this in Lion?!
Perhaps reviewing the tutorials for Pages or searching with Google would help answer many of your questions.

File.renameTo() and locking

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