is this group is still active ???

[ephlodur]

need some help with pthread..

[Lew Pitcher]

On Monday 28 January 2013 20:29, in comp.os.linux.development.apps,

ephl...@linuxmail.org wrote:

> need some help with pthread..

It helps if you ask the question

--
Lew Pitcher
"In Skills, We Trust"

[ephlodur]

On Mon, 28 Jan 2013 20:44:59 -0500, Lew Pitcher wrote:

> On Monday 28 January 2013 20:29, in comp.os.linux.development.apps,
> ephl...@linuxmail.org wrote:
>
>> need some help with pthread..
>
> It helps if you ask the question

thanks for your reply...

my problem is with pthread... I have a class that handle access to a msg
queue with the below code..
this the part that is causing me problem...the init for the
pthread_con_timewait is below..
protected:
pthread_cond_t _event_id;
pthread_condattr_t cattr;

// Prevent copying or assignment
CEvent(const CEvent& _arg);
CEvent& operator=(const CEvent& _rhs);
public:
CEvent(){
//pthread_attr_init(&cattr);
pthread_condattr_setclock(&cattr,
CLOCK_MONOTONIC);
pthread_cond_init(&_event_id,&cattr);


the call to the pthread_con_timewait is below

struct timespec ts;
clock_gettime(CLOCK_MONOTONIC,&ts);

ts.tv_sec += delay; //time that I want to wait


lock();//unlock in this case is define as a base
class CEvent...
_ret = pthread_cond_timedwait(&_event_id, &_m_mutex, &ts);
unlock();

but when ever I make that call it always return with EPERM

My system is ubuntu 11.X I have done a lot of google search a lot on
implementation are like that ...If I use gettimeofday a make the proper
adjustment the call to timewait never return ...in other cases when I use
CLOCK_REALTIME it always return with EPERM ... can you give me any pointer
how should this call be implemented on linux...

thanks for any help..

ephlodur