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/* 
 * nghttp2 - HTTP/2 C Library 
 * 
 * Copyright (c) 2012 Tatsuhiro Tsujikawa 
 * 
 * Permission is hereby granted, free of charge, to any person obtaining 
 * a copy of this software and associated documentation files (the 
 * "Software"), to deal in the Software without restriction, including 
 * without limitation the rights to use, copy, modify, merge, publish, 
 * distribute, sublicense, and/or sell copies of the Software, and to 
 * permit persons to whom the Software is furnished to do so, subject to 
 * the following conditions: 
 * 
 * The above copyright notice and this permission notice shall be 
 * included in all copies or substantial portions of the Software. 
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
 */ 
#include "nghttp2_outbound_item.h" 
 
#include <assert.h> 
#include <string.h> 
 
void nghttp2_outbound_item_init(nghttp2_outbound_item *item) { 
  item->cycle = 0; 
  item->qnext = NULL; 
  item->queued = 0; 
 
  memset(&item->aux_data, 0, sizeof(nghttp2_aux_data)); 
} 
 
void nghttp2_outbound_item_free(nghttp2_outbound_item *item, nghttp2_mem *mem) { 
  nghttp2_frame *frame; 
 
  if (item == NULL) { 
    return; 
  } 
 
  frame = &item->frame; 
 
  switch (frame->hd.type) { 
  case NGHTTP2_DATA: 
    nghttp2_frame_data_free(&frame->data); 
    break; 
  case NGHTTP2_HEADERS: 
    nghttp2_frame_headers_free(&frame->headers, mem); 
    break; 
  case NGHTTP2_PRIORITY: 
    nghttp2_frame_priority_free(&frame->priority); 
    break; 
  case NGHTTP2_RST_STREAM: 
    nghttp2_frame_rst_stream_free(&frame->rst_stream); 
    break; 
  case NGHTTP2_SETTINGS: 
    nghttp2_frame_settings_free(&frame->settings, mem); 
    break; 
  case NGHTTP2_PUSH_PROMISE: 
    nghttp2_frame_push_promise_free(&frame->push_promise, mem); 
    break; 
  case NGHTTP2_PING: 
    nghttp2_frame_ping_free(&frame->ping); 
    break; 
  case NGHTTP2_GOAWAY: 
    nghttp2_frame_goaway_free(&frame->goaway, mem); 
    break; 
  case NGHTTP2_WINDOW_UPDATE: 
    nghttp2_frame_window_update_free(&frame->window_update); 
    break; 
  default: { 
    nghttp2_ext_aux_data *aux_data; 
 
    aux_data = &item->aux_data.ext; 
 
    if (aux_data->builtin == 0) { 
      nghttp2_frame_extension_free(&frame->ext); 
      break; 
    } 
 
    switch (frame->hd.type) { 
    case NGHTTP2_ALTSVC: 
      nghttp2_frame_altsvc_free(&frame->ext, mem); 
      break; 
    case NGHTTP2_ORIGIN:
      nghttp2_frame_origin_free(&frame->ext, mem);
      break;
    default: 
      assert(0); 
      break; 
    } 
  } 
  } 
} 
 
void nghttp2_outbound_queue_init(nghttp2_outbound_queue *q) { 
  q->head = q->tail = NULL; 
  q->n = 0; 
} 
 
void nghttp2_outbound_queue_push(nghttp2_outbound_queue *q, 
                                 nghttp2_outbound_item *item) { 
  if (q->tail) { 
    q->tail = q->tail->qnext = item; 
  } else { 
    q->head = q->tail = item; 
  } 
  ++q->n; 
} 
 
void nghttp2_outbound_queue_pop(nghttp2_outbound_queue *q) { 
  nghttp2_outbound_item *item; 
  if (!q->head) { 
    return; 
  } 
  item = q->head; 
  q->head = q->head->qnext; 
  item->qnext = NULL; 
  if (!q->head) { 
    q->tail = NULL; 
  } 
  --q->n; 
}