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优化 timer

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源文雨
2022-10-15 14:58:09 +08:00
parent 54c6d63f05
commit a610197bf5
1 changed files with 23 additions and 5 deletions
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28
server.c
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@@ -42,11 +42,12 @@ struct thread_timer_t {
pthread_t timerthread;
pthread_cond_t c;
pthread_mutex_t mc;
pthread_rwlock_t mb;
pthread_cond_t tc;
pthread_mutex_t tmc;
uint8_t isbusy;
uint8_t buf[BUFSIZ-sizeof(uint32_t)-sizeof(int)-sizeof(time_t)-sizeof(ssize_t)-sizeof(char*)-2*sizeof(pthread_t)-2*sizeof(pthread_cond_t)-2*sizeof(pthread_mutex_t)-sizeof(pthread_rwlock_t)-sizeof(uint8_t)];
pthread_rwlock_t mb;
uint8_t isbusy; // lock by mb
uint8_t hastimerslept; // lock by mb
uint8_t buf[BUFSIZ-sizeof(uint32_t)-sizeof(int)-sizeof(time_t)-sizeof(ssize_t)-sizeof(char*)-2*sizeof(pthread_t)-2*sizeof(pthread_cond_t)-2*sizeof(pthread_mutex_t)-sizeof(pthread_rwlock_t)-2*sizeof(uint8_t)];
};
typedef struct thread_timer_t thread_timer_t;
static thread_timer_t timers[THREADCNT];
@@ -594,10 +595,16 @@ static void accept_timer(void *p) {
pthread_rwlock_unlock(&timer->mb);
if(!isbusy) {
pthread_mutex_lock(&timer->tmc);
pthread_rwlock_wrlock(&timer->mb);
timer->hastimerslept = 1;
pthread_rwlock_unlock(&timer->mb);
puts("Timer sleep");
pthread_cond_wait(&timer->tc, &timer->tmc);
pthread_mutex_unlock(&timer->tmc);
puts("Timer wake up");
pthread_rwlock_wrlock(&timer->mb);
timer->hastimerslept = 0;
pthread_rwlock_unlock(&timer->mb);
sleep(MAXWAITSEC / 4);
}
if(is_dict_opening) touch_timer(p);
@@ -613,6 +620,10 @@ static void accept_timer(void *p) {
}
sleep(MAXWAITSEC / 4);
}
pthread_rwlock_wrlock(&timer->mb);
timer->timerthread = NULL;
timer->hastimerslept = 0;
pthread_rwlock_unlock(&timer->mb);
}
static void cleanup_thread(thread_timer_t* timer) {
@@ -866,10 +877,14 @@ static void accept_client(int fd) {
cleanup_thread(timer);
putchar('\n');
continue;
} else puts("Thread created");
}
puts("Thread created");
}
// start or wakeup timer thread
pthread_t thread = timer->timerthread;
pthread_rwlock_rdlock(&timer->mb);
uint8_t hastimerslept = timer->hastimerslept;
pthread_rwlock_unlock(&timer->mb);
if(!thread || pthread_kill(thread, 0)) {
printf("Creating timer thread...");
pthread_cond_init(&timer->tc, NULL);
@@ -881,7 +896,10 @@ static void accept_client(int fd) {
continue;
}
puts("succeeded");
} else {
pthread_rwlock_wrlock(&timer->mb);
timer->hastimerslept = 0;
pthread_rwlock_unlock(&timer->mb);
} else if(hastimerslept) {
printf("Waking up timer thread...");
pthread_mutex_lock(&timer->tmc);
pthread_cond_signal(&timer->tc); // wakeup thread