Hi,
I am trying to do a sem_get on a semaphore that has already been created
by
a c++ program. But I'm getting this warning:
PHP Warning: sem_get(): failed for key 0x31006dc2: Invalid argument in
/home/jgreene/views/latest/lcast/apps/webapp/webApp.php on line 11
Here is the line 11:
sem_get($key, 1, 0666);
And here is ipcs -s before and after the php script runs:
------ Semaphore Arrays --------
key semid owner perms nsems
0x31006dc2 1245191 jgreene 666 1
0x31006e01 1277960 jgreene 666 1
I have another c++ program that can get the existing sem with no
problem.
I can get the php script to create a new sem with no problem.
It does not seem to like to get a sem that's already created... although
I haven't tried getting a sem that's been created by another php
script... But the entire point is that php is an ephemeral client and a
C++ app server creates and responds/locks a resource (in this case
shared memory - which does work fine).
Btw, in the archives, way back in 2001, there was a pretty much exact
same post... unfortunately there was no conclusion posted... I really
hope I have better luck!!
Jeremy
