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Full Discussion: Implementing thread in UNIX
Top Forums UNIX for Advanced & Expert Users Implementing thread in UNIX Post 302609035 by Scrutinizer on Monday 19th of March 2012 08:06:22 AM
Old 03-19-2012
What output do you get?
By the way, shell does not support multithreading just multitasking (by forking processes). If you are using ksh88, it is not fully POSIX compliant, ksh93 would be. But I think this should work in ksh88 too. Your temporary file is in an awkward directory (the root directory) can you write there? In shell you use # for comments, not // .

{1..5} is not POSIX. You would need something like this:

Code:
i=0;
while [ $((i+=1)) -le 5 ]; do
  thread &
done
wait

or

Code:
for i in 1 2 3 4 5; do

Otherwise the shell would execute the loop only once.

Last edited by Scrutinizer; 03-19-2012 at 09:14 AM..
 

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pthread_detach(3C)														pthread_detach(3C)

NAME
pthread_detach - detach a thread SYNOPSIS
cc -mt [ flag... ] file... -lpthread [ library... ] #include <pthread.h> int pthread_detach(pthread_t thread); The pthread_detach() function is used to indicate to the implementation that storage for the thread thread can be reclaimed when that thread terminates. In other words, pthread_detach() dynamically resets the detachstate attribute of the thread to PTHREAD_CRE- ATE_DETACHED. After a successful call to this function, it would not be necessary to reclaim the thread using pthread_join(). See pthread_join(3C). If thread has not terminated, pthread_detach() will not cause it to terminate. The effect of multiple pthread_detach() calls on the same target thread is unspecified. If successful, pthread_detach() returns 0. Otherwise, an error number is returned to indicate the error. The pthread_detach() function will fail if: EINVAL The implementation has detected that the value specified by thread does not refer to a joinable thread. ESRCH No thread could be found corresponding to that specified by the given thread ID. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ pthread_create(3C), pthread_join(3C), attributes(5), standards(5) 23 Mar 2005 pthread_detach(3C)
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