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#include <signal.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "triton_p.h"
int thread_count=64;
static spinlock_t threads_lock=SPINLOCK_INITIALIZER;
static LIST_HEAD(threads);
static LIST_HEAD(sleep_threads);
static LIST_HEAD(ctx_queue);
static spinlock_t ctx_list_lock=SPINLOCK_INITIALIZER;
static LIST_HEAD(ctx_list);
struct triton_ctx_t *default_ctx;
static int terminate;
void triton_thread_wakeup(struct triton_thread_t *thread)
{
pthread_kill(thread->thread,SIGUSR1);
}
static void* triton_thread(struct triton_thread_t *thread)
{
struct triton_md_handler_t *h;
struct triton_timer_t *t;
sigset_t set;
int sig;
sigemptyset(&set);
sigaddset(&set,SIGUSR1);
sigaddset(&set,SIGQUIT);
while(1)
{
sigwait(&set,&sig);
cont:
if (thread->ctx->need_close)
{
thread->ctx->close(thread->ctx);
thread->ctx->need_close=0;
}
while (1)
{
spin_lock(&thread->ctx->lock);
if (!list_empty(&thread->ctx->pending_timers))
{
t=list_entry(thread->ctx->pending_timers.next,typeof(*t),entry2);
list_del(&t->entry2);
spin_unlock(&thread->ctx->lock);
if (t->expire(t))
continue;
}
if (!list_empty(&thread->ctx->pending_handlers))
{
h=list_entry(thread->ctx->pending_handlers.next,typeof(*h),entry2);
list_del(&h->entry2);
h->pending=0;
spin_unlock(&thread->ctx->lock);
if (h->trig_epoll_events&(EPOLLIN|EPOLLERR|EPOLLHUP))
if (h->read)
if (h->read(h))
continue;
if (h->trig_epoll_events&(EPOLLOUT))
if (h->write)
if (h->write(h))
continue;
h->trig_epoll_events=0;
continue;
}
thread->ctx->thread=NULL;
spin_unlock(&thread->ctx->lock);
if (thread->ctx->need_free)
thread->ctx->free(thread->ctx);
thread->ctx=NULL;
break;
}
spin_lock(&threads_lock);
if (!list_empty(&ctx_queue))
{
thread->ctx=list_entry(ctx_queue.next,typeof(*thread->ctx),entry2);
list_del(&thread->ctx->entry2);
spin_unlock(&threads_lock);
spin_lock(&thread->ctx->lock);
thread->ctx->thread=thread;
thread->ctx->queued=0;
spin_unlock(&thread->ctx->lock);
goto cont;
}else
{
if (!terminate)
list_add(&thread->entry2,&sleep_threads);
spin_unlock(&threads_lock);
if (terminate)
return NULL;
}
}
}
struct triton_thread_t *create_thread()
{
struct triton_thread_t *thread=malloc(sizeof(*thread));
memset(thread,0,sizeof(*thread));
pthread_create(&thread->thread,NULL,(void*(*)(void*))triton_thread,thread);
return thread;
}
int triton_queue_ctx(struct triton_ctx_t *ctx)
{
if (ctx->thread || ctx->queued)
return 0;
spin_lock(&threads_lock);
if (list_empty(&sleep_threads))
{
list_add_tail(&ctx->entry2,&ctx_queue);
spin_unlock(&threads_lock);
ctx->queued=1;
return 0;
}
ctx->thread=list_entry(sleep_threads.next,typeof(*ctx->thread),entry2);
list_del(&ctx->thread->entry2);
spin_unlock(&threads_lock);
return 1;
}
void triton_register_ctx(struct triton_ctx_t *ctx)
{
spinlock_init(&ctx->lock);
INIT_LIST_HEAD(&ctx->handlers);
INIT_LIST_HEAD(&ctx->timers);
INIT_LIST_HEAD(&ctx->pending_handlers);
INIT_LIST_HEAD(&ctx->pending_timers);
spin_lock(&ctx_list_lock);
list_add_tail(&ctx->entry,&ctx_list);
spin_unlock(&ctx_list_lock);
}
void triton_unregister_ctx(struct triton_ctx_t *ctx)
{
ctx->need_free=1;
spin_lock(&ctx_list_lock);
list_del(&ctx->entry);
spin_unlock(&ctx_list_lock);
}
int triton_init(const char *conf_file)
{
default_ctx=malloc(sizeof(*default_ctx));
if (!default_ctx)
{
fprintf(stderr,"cann't allocate memory\n");
return -1;
}
triton_register_ctx(default_ctx);
if (conf_load(conf_file))
return -1;
if (log_init())
return -1;
if (md_init())
return -1;
if (timer_init())
return -1;
return 0;
}
void triton_run()
{
struct triton_thread_t *t;
int i;
for(i=0;i<thread_count;i++)
{
t=create_thread();
list_add_tail(&t->entry,&threads);
list_add_tail(&t->entry2,&sleep_threads);
}
md_run();
timer_run();
}
void triton_terminate()
{
struct triton_ctx_t *ctx;
struct triton_thread_t *t;
md_terminate();
timer_terminate();
spin_lock(&ctx_list_lock);
list_for_each_entry(ctx,&ctx_list,entry)
{
spin_lock(&ctx->lock);
ctx->need_close=1;
triton_queue_ctx(ctx);
spin_unlock(&ctx->lock);
}
spin_unlock(&ctx_list_lock);
spin_lock(&threads_lock);
terminate=1;
spin_unlock(&threads_lock);
list_for_each_entry(t,&threads,entry)
triton_thread_wakeup(t);
list_for_each_entry(t,&threads,entry)
pthread_join(t->thread,NULL);
}
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