src/core/iomgr/closure.c

/*
 *
 * Copyright 2015, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include "src/core/iomgr/closure.h"

void
grpc_closure_init (grpc_closure * closure, grpc_iomgr_cb_func cb, void *cb_arg)
{
  closure->cb = cb;
  closure->cb_arg = cb_arg;
  closure->next = NULL;
}

void
grpc_closure_list_add (grpc_closure_list * closure_list, grpc_closure * closure, int success)
{
  if (closure == NULL)
    return;
  closure->next = NULL;
  closure->success = success;
  if (closure_list->head == NULL)
    {
      closure_list->head = closure;
    }
  else
    {
      closure_list->tail->next = closure;
    }
  closure_list->tail = closure;
}

void
grpc_closure_list_run (grpc_closure_list * closure_list)
{
  while (!grpc_closure_list_empty (*closure_list))
    {
      grpc_closure *c = closure_list->head;
      closure_list->head = closure_list->tail = NULL;
      while (c != NULL)
	{
	  grpc_closure *next = c->next;
	  c->cb (c->cb_arg, c->success, closure_list);
	  c = next;
	}
    }
}

int
grpc_closure_list_empty (grpc_closure_list closure_list)
{
  return closure_list.head == NULL;
}

void
grpc_closure_list_move (grpc_closure_list * src, grpc_closure_list * dst)
{
  if (src->head == NULL)
    {
      return;
    }
  if (dst->head == NULL)
    {
      *dst = *src;
    }
  else
    {
      dst->tail->next = src->head;
      dst->tail = src->tail;
    }
  src->head = src->tail = NULL;
}