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Re: therad delay problem
- From: Andrew Lunn <andrew at lunn dot ch>
- To: Aravind B <arvindb at cranessoftware dot com>
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Tue, 25 Nov 2003 09:30:30 +0100
- Subject: Re: [ECOS] therad delay problem
- References: <1069738146.1002.23.camel@ambica>
On Tue, Nov 25, 2003 at 10:59:06AM +0530, Aravind B wrote:
> hi,
> i have written a program which contains 3 thread as shown.
>
> cyg_user_start(void)
> {
>
> printf("entering two threads cyg_user_start() function\n");
>
> cyg_mutex_init(&cliblock);
> cyg_thread_create(3,simple_program,(cyg_addrword_t)2,
> "simple_program_Thread ",(void*) stack[2],4096,
> &simple_program_Thread,&thread_s[2]);
> cyg_thread_create(4,simple_program1,(cyg_addrword_t)3,
> "simple_program1_Thread",(void*) stack[3],4096,
> &simple_program1_Thread,&thread_s[3]);
> cyg_thread_create(5,simple_program2,(cyg_addrword_t)4,
> "simple_program2_Thread",(void*) stack[4],4096,
> &simple_program2_Thread,&thread_s[4]);
>
> cyg_thread_resume(simple_program_Thread);
> cyg_thread_resume(simple_program1_Thread);
> cyg_thread_resume(simple_program2_Thread);
> }
> cyg_alarm_t alarm_Tbcn_func;
>
> void simple_program(cyg_addrword_t data )
> {
> int message=(int) data;
> unsigned int i;
> printf("i am thread %d before delay\n",message);
>
> curr_time=cyg_real_time_clock();
> cyg_clock_to_counter(curr_time,&handle_counterTbcn);
> cyg_alarm_create(handle_counterTbcn, alarm_Tbcn_func,5500,
> &handle_alarmTbcn, &alarm_Tbcn);
> cyg_alarm_initialize(handle_alarmTbcn,cyg_current_time()+200,0);
>
> cyg_thread_delay(3);
> while(1)
> {
> if(var==1)
> {
> printf(" hello");
> break;
> }
> }
> }
>
> void simple_program1(cyg_addrword_t data )
> {
> int message=(int) data;
> printf("i am thread %d\n",message);
> }
>
> void simple_program2(cyg_addrword_t data )
> {
> int message=(int) data;
> printf("i am thread %d\n",message);
> while(1)
> {
> }
> }
> void alarm_Tbcn_func( cyg_handle_t alarmTbcn,cyg_addrword_t data)
> {
> var=1;
> printf(" i am in alarm function\n");
> }
>
>
> there is cyg_thread _delay(3) in t1.the control goes to t2 and then
> t3.In t3 i have infinite while loop.The control is not going to t1.Is
> there any way so that i can signal to t1 that thread delay is over and
> it can continue its flow.If so then how it is?
Does the alarm hander get called?
it var a volatile?
Andrew
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