任务队列 有一个隐藏的问题

#include "./workqueue/uplat_zynq7000/cache2data/list.h"
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 

struct task_queue {
  // TODO: Mutex from other thread
  char taskName[32];
  pthread_mutex_t mutex;
  pthread_cond_t cond;
  bool empty;
  void *task_args;
  void *deal_callback_args;
  int32_t (*deal_callback)(void *, size_t);
  int32_t (*task)(void *, int32_t (*deal_callback)(void *, size_t), void *);
  struct LIST_NODE node;
};

static inline int32_t setupTaskQueue(struct task_queue *task) {
  if (task == 0) {
    return -2;
  }
  task->empty = true;
  task->node.next = &task->node;
  task->node.prev = &task->node;
  pthread_mutex_init(&task->mutex, 0);
  pthread_cond_init(&task->cond, 0);
  return 0;
}

// NOTE: add mutex lock
static inline int32_t taskQueuePush(
    struct task_queue *task, const char *taskName, void *task_args,
    void *deal_callback_args,
    int32_t (*task_cb)(void *, int32_t (*deal_callback)(void *, size_t),
                       void *),
    int32_t (*deal_callback)(void *, size_t)) {
  if (task == 0) {
    return -1;
  }
  struct task_queue *new_task = calloc(sizeof(struct task_queue), 1);
  if (new_task == 0) {
    return -3;
  }
  task->empty = false;
  bzero(new_task->taskName, sizeof(new_task->taskName));
  strcpy(new_task->taskName, taskName);
  new_task->task_args = task_args;
  new_task->deal_callback_args = deal_callback_args;
  new_task->task = task_cb;
  list_add(&new_task->node, &task->node);
  pthread_mutex_lock(&task->mutex);
  pthread_cond_broadcast(&task->cond);
  pthread_mutex_unlock(&task->mutex);
  return 0;
}

static inline int32_t taskQueueDeal(struct task_queue *task) {
  if (task == 0) {
    return -1;
  }
  struct task_queue *cur;
  struct LIST_NODE *node;
  struct LIST_NODE *safe_node;
  while (true) {
    while (task->empty) {
      pthread_mutex_lock(&task->mutex);
      pthread_cond_wait(&task->cond, &task->mutex);
      pthread_mutex_unlock(&task->mutex);
    }
    node = task->node.next;
    while (node != &task->node) {
      cur = container_of(node, struct task_queue, node);
      if (cur != 0) {
        if (cur->task != 0) {
          cur->task(cur->task_args, cur->deal_callback,
                    cur->deal_callback_args);
        }
      }
      list_del(node);
      node = node->next;
      free(cur);
      cur = 0;
    }
    task->empty = true;
  }
  return 0;
}

static inline int32_t isTaskQueueEmpty(struct task_queue *task) {
  if (task == 0) {
    return -1;
  }
  return task->empty;
}

int32_t task_1(void *args, int32_t (*deal_callback)(void *, size_t),
               void *_args) {
  printf("%s\n", __func__);
  return 0;
}

int32_t task_2(void *args, int32_t (*deal_callback)(void *, size_t),
               void *_args) {
  printf("%s\n", __func__);
  return 0;
}

void *all(void *p) {
  struct task_queue *q = p;
  while (1) {
    usleep(500);
    taskQueuePush(q, "task 111", 0, 0, task_1, 0);
    taskQueuePush(q, "task 112", 0, 0, task_2, 0);
  }
}

int32_t threading(struct task_queue *q) {
  pthread_t tid;
  return pthread_create(&tid, 0, all, q);
}

int main(void) {
  struct task_queue queue;
  setupTaskQueue(&queue);
  threading(&queue);
  taskQueueDeal(&queue);
  return 0;
}

生产的速度要小于，消化的速度

消化不良就溢出了

我链表的释放时没有问题的,忽略了生产消化的问题

增加处理上限,超过门限，等待处理完毕，才能继续加入队列

或者自动添加一个延时

#include "./workqueue/uplat_zynq7000/cache2data/list.h"
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 

struct task_queue {
  // TODO: Mutex from other thread
  clock_t start;
  char taskName[32];
  pthread_mutex_t mutex;
  pthread_cond_t cond;
  bool empty;
  bool busy;
  void *task_args;
  void *deal_callback_args;
  int32_t (*deal_callback)(void *, size_t);
  int32_t (*task)(void *, int32_t (*deal_callback)(void *, size_t), void *);
  clock_t end;
  struct LIST_NODE node;
};

static inline int32_t setupTaskQueue(struct task_queue *task) {
  if (task == 0) {
    return -2;
  }
  task->empty = true;
  task->start = 0;
  task->end = 1;
  task->node.next = &task->node;
  task->node.prev = &task->node;
  pthread_mutex_init(&task->mutex, 0);
  pthread_cond_init(&task->cond, 0);
  return 0;
}

// NOTE: add mutex lock
static inline int32_t taskQueuePush(
    struct task_queue *task, const char *taskName, void *task_args,
    void *deal_callback_args,
    int32_t (*task_cb)(void *, int32_t (*deal_callback)(void *, size_t),
                       void *),
    int32_t (*deal_callback)(void *, size_t)) {
  if (task == 0) {
    return -1;
  }
  usleep(abs((int)(task->end - task->start)) * 100);
  struct task_queue *new_task = calloc(sizeof(struct task_queue), 1);
  if (new_task == 0) {
    return -3;
  }
  task->empty = false;
  bzero(new_task->taskName, sizeof(new_task->taskName));
  strcpy(new_task->taskName, taskName);
  new_task->task_args = task_args;
  new_task->deal_callback_args = deal_callback_args;
  new_task->task = task_cb;
  list_add(&new_task->node, &task->node);
  pthread_mutex_lock(&task->mutex);
  pthread_cond_broadcast(&task->cond);
  pthread_mutex_unlock(&task->mutex);
  return 0;
}

static inline int32_t taskQueueDeal(struct task_queue *task) {
  if (task == 0) {
    return -1;
  }
  struct task_queue *cur;
  struct LIST_NODE *node;
  struct LIST_NODE *safe_node;
  while (true) {
    while (task->empty) {
      pthread_mutex_lock(&task->mutex);
      pthread_cond_wait(&task->cond, &task->mutex);
      pthread_mutex_unlock(&task->mutex);
    }
    node = task->node.next;
    while (node != &task->node) {
      cur = container_of(node, struct task_queue, node);
      if (cur != 0) {
        task->start = clock();
        if (cur->task != 0) {
          cur->task(cur->task_args, cur->deal_callback,
                    cur->deal_callback_args);
        }
        task->end = clock();
      }
      list_del(node);
      node = node->next;
      free(cur);
      cur = 0;
    }
    task->empty = true;
  }
  return 0;
}

static inline int32_t isTaskQueueEmpty(struct task_queue *task) {
  if (task == 0) {
    return -1;
  }
  return task->empty;
}

int32_t task_1(void *args, int32_t (*deal_callback)(void *, size_t),
               void *_args) {
  printf("%s\n", __func__);
  return 0;
}

int32_t task_2(void *args, int32_t (*deal_callback)(void *, size_t),
               void *_args) {
  printf("%s\n", __func__);
  return 0;
}

void *all(void *p) {
  struct task_queue *q = p;
  while (1) {
    taskQueuePush(q, "task 111", 0, 0, task_1, 0);
    taskQueuePush(q, "task 112", 0, 0, task_2, 0);
  }
}

int32_t threading(struct task_queue *q) {
  pthread_t tid;
  return pthread_create(&tid, 0, all, q);
}

int main(void) {
  struct task_queue queue;
  setupTaskQueue(&queue);
  threading(&queue);
  taskQueueDeal(&queue);
  return 0;
}