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Old 02-26-2003, 12:20 AM   #1
marry_jeo
LQ Newbie
 
Registered: Feb 2003
Posts: 1

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semaphore init problem in linux


Hello all,
I m using sem_init() in my program. when i call this
function as

sem_t *pSem = (sem_t*)malloc(sizeof(sem_t));
sem_init(pSem, 0, 1);

it sets the values of pSem as
pSem
__sem_lock
__status 0
__spinlock 0
__sem_value 1
__sem_waiting
the value of __sem_value is 1, means only one can
enter after sem_wait() at a time.

but when make a library of this function, and then call this funciton in my application. it sets as
__sem_lock
__status 3
__spinlock 0
__sem_value 0
__sem_waiting

the value of __sem_value is zero, therefore it does
not allow anyone to enter after sem_wait().

I dont know why it is happening.
Can anyone help me plz and get rid of this problem.

Thnx & Rgds,
Marry
 
  


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