Hi
just doin' this here for the naval school, back here in Pportugal, and needed some help, especially with the shared memo i want to use for the 10 airport gate, and the maximum of 4 planes preparing to leave; can´t figure out how the gate can be id by the same PID. WELL, if someone wants to know the general, the main idea is to create PIDs on a program done in unix bases, that should work in 2 modes (switch), one on automatic (just puting in the frequency of generating the planes) and the manual conf, by putting in the max of planes to generate and the frequency; only 15 planes are allowed in the air, the others are sent to an other airport;one at a time in the landing route, four gate for passagers move in, and 4 allowed to leave.
Will appreciate your help
Here is what i did 'til now:
Joao Turbulento,Portuguese Naval school,Lisbon, Portugal
Tks
Moderator's Comments:
edit by bakunin: Please use CODE-tags when posting code, terminal output or similar. Thank you.
Shared memeory and semaphores are so tricky and root-oriented, I like to make my own using mmap(). No root calls needed. No collisions between users on a scarece resource. No reboot to adjust. A hard copy of the shared memory if the app crashes, visible to any file tool.
Shouldn't the project be in multiple processes, like one per plane, communicating through the IPCs and taking/releasing modeled resources using it? Good Luck.
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I tried to print out external memo in LINUX system,
however, each time in the print out also print out
M--.
M--.
in front of the external memo,
my question is
HOW CAN I PRINT OUT THE MEMO ONLY?
THANKS (0 Replies)
Hi.
When I open a Terminal window instead of getting the machine's name (i.e. Joe-Bloggs-laptop) I get `unknown-00-1x-5x-cx-ex-ex:~ bloggs$' which is the Mac's Airport ID (ID munged).
I'm on a wireless LAN with one other laptop & three iPhones (Macs running 10.6.8 & iPhones all up to date).
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Can someone help me what i am doing wrong with this:
apsrvrport1=28548
stcmsport1=28507
apsrvrport2=38548
stcmsport2=38507
apsrvrport3=48548
stcmsport3=48507
apsrvrport4=58548
stcmsport4=58507
apsrvrport5=38048
stcmsport5=38007
apsrvrport6=27548
stcmsport6=27507
apsrvrport7=37548... (6 Replies)
Hi
just doin' this here for the naval school, back here in Pportugal, and needed some help, especially with the shared memo i want to use for the 10 airport gate, and the maximum of 4 planes preparing to leave; can´t figure out how the gate can be id by the same PID. WELL, if someone wants to... (1 Reply)
hello,
Can any one please answer these 2 questions?
1. What is the purpose of SEMAPHORES and SHARED MEMORY on a Unix platform?
2. What would require a SYS. ADMIN to set SEMAPHORES and SHARED MEMORY on a Unix platform?
Thanks,
Ted (1 Reply)