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#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <signal.h>
#include <string.h>
#include "triton_p.h"
#ifdef USE_CORO
static LIST_HEAD(coroutines);
asm(".hidden current_coro");
struct coroutine_t *current_coro=NULL;
//asm(".hidden sched_uc");
static ucontext_t sched_uc;
asm(".hidden schedule");
void schedule(void)
{
struct coroutine_t *coro;
struct list_head *p;
while(1)
{
current_coro=NULL;
for(p=coroutines.next; p!=&coroutines; p=p->next)
{
coro=list_entry(p,typeof(*current_coro),entry);
if (coro->time.tv_sec)
{
if (!current_coro) current_coro=coro;
else if (coro->time.tv_sec<current_coro->time.tv_sec) continue;
else if (coro->time.tv_sec>current_coro->time.tv_sec || coro->time.tv_usec>current_coro->time.tv_usec) current_coro=coro;
}
}
if (current_coro)
{
get_time(¤t_coro->time);
swapcontext(&sched_uc,¤t_coro->uc);
//break;
}else
{
printf("triton: coroutine: bug: no current coro !!!\n");
exit(-1);
}
}
}
void coroutine_init(void)
{
getcontext(&sched_uc);
sched_uc.uc_stack.ss_sp=malloc(DEF_COROUTINE_STACK);
sched_uc.uc_stack.ss_size=DEF_COROUTINE_STACK;
makecontext(&sched_uc,schedule,0);
}
void triton_coroutine_schedule()
{
memset(¤t_coro->time,0,sizeof(current_coro->time));
memset(¤t_coro->timeout,0,sizeof(current_coro->timeout));
swapcontext(¤t_coro->uc,&sched_uc);
}
long int triton_coroutine_create(int stack_size,triton_coroutine_func func,void *arg,int run)
{
struct coroutine_t *coro=malloc(sizeof(*coro));
memset(coro,0,sizeof(*coro));
if (!stack_size) stack_size=DEF_COROUTINE_STACK;//+SIGSTKSZ;
getcontext(&coro->uc);
coro->uc.uc_link=&sched_uc;
coro->uc.uc_stack.ss_sp=malloc(stack_size);
coro->uc.uc_stack.ss_size=stack_size;
makecontext(&coro->uc,(void (*)(void))func,1,arg);
if (run) coro->time.tv_sec=1;
list_add(&coro->entry,&coroutines);
return (long int)coro;
}
void triton_coroutine_delete(long int id)
{
struct coroutine_t *coro=(struct coroutine_t *)id;
list_del(&coro->entry);
free(coro->uc.uc_stack.ss_sp);
}
int triton_coroutine_schedule_timeout(int msec)
{
//current_coro->msleep=msec;
struct timeval tv;
int t;
get_time(¤t_coro->timeout);
current_coro->timeout.tv_sec+=msec/1000;
current_coro->timeout.tv_usec+=(msec%1000)*1000;
if (current_coro->timeout.tv_usec>=1000000)
{
current_coro->timeout.tv_sec++;
current_coro->timeout.tv_usec-=1000000;
}
//triton_coroutine_schedule();
memset(¤t_coro->time,0,sizeof(current_coro->time));
//memset(¤t_coro->timeout,0,sizeof(current_coro->timeout));
swapcontext(¤t_coro->uc,&sched_uc);
get_time(&tv);
t=(current_coro->timeout.tv_sec-tv.tv_sec)*1000+(current_coro->timeout.tv_usec-tv.tv_usec)/1000;
if (t<0) t=0;
return t;
}
void triton_coroutine_wakeup(long int id)
{
struct coroutine_t *coro=(struct coroutine_t *)id;
struct coroutine_t *cur_coro=current_coro;
get_time(¤t_coro->time);
current_coro=coro;
swapcontext(&cur_coro->uc,&coro->uc);
}
asm(".hidden coroutine_get_timeout");
int coroutine_get_timeout(struct timeval *tv)
{
struct coroutine_t *coro;
struct list_head *p;
int twait,t=-1;
for(p=coroutines.next; p!=&coroutines; p=p->next)
{
coro=list_entry(p,typeof(*coro),entry);
if (coro->timeout.tv_sec)
{
twait=(coro->timeout.tv_sec-tv->tv_sec)*1000+(coro->timeout.tv_usec-tv->tv_usec)/1000;
if (t==-1 || twait<t) t=twait;
}
}
return t;
}
asm(".hidden coroutine_check_timeout");
void coroutine_check_timeout(struct timeval *tv)
{
struct coroutine_t *coro;
struct list_head *p;
for(p=coroutines.next; p!=&coroutines;)
{
coro=list_entry(p,typeof(*coro),entry);
p=p->next;
if (coro->timeout.tv_sec && (tv->tv_sec>coro->timeout.tv_sec || (tv->tv_sec==coro->timeout.tv_sec && tv->tv_usec>=coro->timeout.tv_usec)))
{
triton_coroutine_wakeup((long int)coro);
}
}
}
#endif
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