Re: pthread_cond_timedwait

["Steve Croall (TIBCO)" <tibco.croall@btinternet.com>]

Hi,

The timeout parameter you pass to pthread_cond_timedwait() is a struct 
timespec type, which is defined in pthread.h, if HAVE_STRUCT_TIMESPEC is 
not defined at build time.

struct timespec {
         long tv_sec;
         long tv_nsec;
};

Just set the tv_nsec to the amount of nanoseconds required.  The pthread 
source on Windows uses the following calculation to convert the above 
structure to milliseconds:

   tmpAbsMilliseconds =  (int64_t)abstime->tv_sec * MILLISEC_PER_SEC;
   tmpAbsMilliseconds += ((int64_t)abstime->tv_nsec + 
(NANOSEC_PER_MILLISEC/2)) / NANOSEC_PER_MILLISEC;

Using the following defines:

   const int64_t NANOSEC_PER_MILLISEC = 1000000;
   const int64_t MILLISEC_PER_SEC = 1000;

Steve.

Allan Comar wrote:
> Hi all, I am needing something that I couldn't find in nowhere else, I am trying to use pthread_cond_timedwait but I want that the time that I need to wait is setted im milliseconds, I already could do in seconds and i am having a real hard time trying it in milliseconds. Any Ideas ? I am using MSVC6.0 with pthreads.
> 

-- 

J. Senior Software Engineer, Tibco Software Ltd.
T. +44 (0) 1792 360773
M. +44 (0) 7788 971394
E. scroall@tibco.com
W. www.tibco.com