Port event mechanism and full dupex socket -AIO with Completion Port

Hi,
I just started to port code from Windows OS to Solaris. I need a way to implement something similar to AIO with Completion Port from Windows on Solaris OS. After initial investigation I have discovered port - events API.
It is quite elegant.
The problem is that I can't figure out if it is possible to use single port to achieve full duplex socketing.
This means is it possible to serve both POLLIN & POLLOUT for given socket ( PORT_SOURCE_FD ) with single port ?
From port_associate man pages it seems that it is not possible to achieve something like that.
"... If the specified object is already
associated with the specified port, the port_associate()
function serves to update the events and user arguments of
the association. ..."
Does this means that I need to create two separate ports - one for POLLIN events and the other for POLLOUT events in order to be able to achieve full duplex concurrent socket ?
Since I'm quite new in Solaris development I would kindly ask you to give me a hint what would be the best way to implement something similar to Windows Asynchronous IO With Completion Port on Solaris OS.
Many thanks
Mirko

Hi,
Yes, it can't use single port to achieve full duplex socketing, under win32, there have some tools, for example [serial port splitter|http://www.softsea.com/review/Serial-Port-Splitter.html], can allow you to share one serial port among several applications, but Slaris can't support this, and the funcation port_associate() need use two separate ports.

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hi
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Thanks for your reply Steve.
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http://verveja.footsteps.be/~verveja/files/oracle/ADFEventMechanismStuff-v0.05.zip
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Can i run UDP client and UDP server socket program in the same pc ?

hi all.
when i execute my UDP client socket program and UDP server socket program in the same pc ,
It's will shown the error msg :
"Address already in use: Cannot bind"
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any help will be appreciated !

bobby92 wrote:
i have use a specified port for UDP server side , and for client define the server port "DatagramSocket clientSocket= new DatagramSocket(Server_PORT);"Why? The port you provide here is not the target port. It's the local port you listen on. That's only necessary when you want other hosts to connect to you (i.e. when you're acting as a server).
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Hi everyone,
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Your English is better than my French.
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Hi, welcome to Apple Discussions.
A few ideas for you to consider...
"Other" is the measure of used space on the iPod not taken up by Audio, Video & Photos. This includes the iPod's library and artwork plus any files you may have copied to your iPod in disk mode. The overhead for the library & artwork data is typically 1-2% of the size of the media, e.g. for 100Gb of Audio & Video expect to have around 1.5Gb of "Other". This information is needed for the iPod's operation and cannot be removed.
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<hr>
*Diagnostics Mode*
It's possible that your iPod's hard drive has started to fail. Take your iPod and place your right thumb on the centre SELECT button and your left on the top MENU button. Press down both thumbs for about 6 seconds until your iPod reboots. Immediately move your left thumb around to the rewind button |<< on the left and hold this down together with SELECT for a further 6 seconds. Your iPod should now switch into Diagnostic Boot mode. Press MENU for *Manual Test*, then select *IO > HardDrive > HDSMARTData* to reveal your stats. For comparison here are mine for my 2 year old 6th Generation Classic:
Retracts: 889
Reallocs: 12
Pending Sectors: 0
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Temp: Current 24c
Temp: Min 10c
Temp: Max 50c
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With modern disc drives sectors are no longer marked bad by a disc scan, if the SMART firmware detects a sector it has trouble accessing it will attempt to invisibly reallocate it to a spare area of the disc.
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*Reallocated Sectors Count*
Count of reallocated sectors. When the hard drive finds a read/write/verification error, it marks this sector as "reallocated" and transfers data to a special reserved area (spare area). This process is also known as remapping, and "reallocated" sectors are called remaps. This is why, on modern hard disks, "bad blocks" cannot be found while testing the surface – all bad blocks are hidden in reallocated sectors. However, as the number of reallocated sectors increases, the read/write speed tends to decrease. The raw value normally represents a count of the number of bad sectors that have been found and remapped. Thus, the higher the attribute value, the more sectors the drive has had to reallocate.
*Pending sector count*
Number of "unstable" sectors (waiting to be remapped, because of read errors). If an unstable sector is subsequently written or read successfully, this value is decreased and the sector is not remapped. Read errors on a sector will not remap the sector (since it might be readable later); instead, the drive firmware remembers that the sector needs to be remapped, and remaps it the next time it's written.
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<hr>
If the drive is essentially OK but iTunes isn't restoring it try Erase your iPod - The Super Fix for most iPod Problems. Basically a low level format of the iPod’s hard drive to try to get around whatever problems are stopping iTunes from restoring it properly.
<hr>
Once you've restored your iPod don't rush to dump all the data back exactly as it was before. I have found that lots of large or complex smart playlists can sometimes trigger constant reboots or dumping of the iPod's library. In addition, larger transfers can fail leaving data in an inconsistent state. Try this technique for populating the iPod in stages.
*Break up large transfers*
In iTunes select the menu item *File... New Smart Playlist*. Change the first drop-down box to Playlist, the next to is and the next to Music. Tick against *Limit to*, type in say 10, then change the drop-down to GB, and set the last drop-down to artist. When you click OK you can enter a name for the playlist, e.g. Transfer. Now sync this playlist to your iPod rather than your entire library. When the sync is complete modify the rule ( *File... Edit playlist* ) to increase the size by your chosen amount, then sync and repeat. You can experiment with different size increments, if it doesn't work just choose something a bit smaller until it works each time. Before long you should have all your music on your iPod. Once that's done you can move on to other media such as podcasts, videos, photos, playlists etc.
tt2

Database link with the alias and full description in the connect string

Hi,
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Port event mechanism and full dupex socket -AIO with Completion Port

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