※ 引述《wildcat (嘆息)》之銘言：
: 看了一下ptt放在CCode裡面的src...
: 發現一個很喜歡的東西, Board Attribution
: 也就是直接定義看板是要匿名、要成為群組板、要隱藏....etc.
: 這個真是非常好用，例如要匿名也不用去改src了...
: 所以興高采烈的就把他加到我自己的code裡面了
: 才發現要改的地方真不少,
: admin.c,board.c,edit.c,cache.c.....etc.
: 改cache.c的時候,發現ptt加了一個brd_sem...hmm....
: 這樣會比較快？
: 跟著加下去吧....
: 霹靂啪啦改了一堆、make過了之後....進站....嗯,看起來不錯
: 可是...動態看板不見了？！
: 更慘的是，只要等12秒(ps.動態看板更換的週期)
: 就死當住不能動了...
: 如果把動態看板關了，則一切都沒有問題....
: 原本以為是舊病復發...(ps.race condition)
: 所以檢查一下cache.c跟menu.c....
: 不對勒....原本就都有修正過了...
: 把舊的 cache.c 再copy 回來....結果還是一樣...
: 這真是難倒我了.....難道還有別的地方會造成無窮迴圈的嗎...?!
: @_@ (暈頭轉向中)

要把看版改成像Ptt版的
要修改cache,c中的pttcache部份
/*-------------------------------------------------------*/
/* PTT  cache                                            */
/*-------------------------------------------------------*/
/* cachefor 動態看版 */

struct PTTCACHE *ptt;
int ptt_semid;

void
reload_pttcache()
{
   if (ptt->busystate)
   {
     /*sleep(1);*/
   }
   else
   {
     fileheader item;
     char pbuf[256], buf[256], *chr;
     FILE *fp;
     int num, id, j;
     ptt->busystate = 1;
     sem_init(PTTSEM_KEY,&ptt_semid);
     sem_lock(SEM_ENTER,ptt_semid);

     ptt->max_film = 0;
     bzero(ptt->notes, sizeof ptt->notes);
#if !defined(_BBS_UTIL_C_)
     setapath(pbuf, "Note");
     setadir(buf, pbuf);
     num = get_num_records(buf, sizeof item);
#endif                          /* !defined(_BBS_UTIL_C_) */
     id =0;
     for (ptt->max_film = 20, j = 0; j <= num; j++)
#if !defined(_BBS_UTIL_C_)
      if (get_record(buf, &item, sizeof item, j) != -1)

        if (item.title[3]=='<' && item.title[8]=='>')
          {
           char path[256],buf1[256];
           int num1,k;
           fileheader subitem;

           setapath(path,"Note");
           sprintf(buf1,"%s/%s",path,item.filename);
           setadir(path, buf1);
           num1 = get_num_records(path, sizeof item);
           for (k = 0; k <= num1; k++)
                {
                      if (get_record(path, &subitem, sizeof item, k) != -1)
                        {
                            sprintf(ptt->notes[id++],"%s/%s",
                                item.filename , subitem.filename);
                            if (id >= MAX_MOVIE) break;
                        }
                }
           if (id >= MAX_MOVIE) break;
          }
     ptt->max_film = id-1;
     ptt->max_history = ptt->max_film - 2;
     if (ptt->max_history > MAX_HISTORY - 1)
     ptt->max_history = MAX_HISTORY - 1;
     if (ptt->max_history <0) ptt->max_history=0;
#endif                          /* !defined(_BBS_UTIL_C_) */
      fp=fopen("etc/today_is","r");

      if(fp)
        {
         fgets(ptt->today_is,15,fp);
         if(chr=strchr(ptt->today_is,'\n')) *chr=0;
         ptt->today_is[15]=0;
         fclose(fp);
        }
     /* 等所有資料更新後再設定 uptime */
     ptt->uptime = ptt->touchtime;
#if !defined(_BBS_UTIL_C_)
     log_usies("CACHE", "reload pttcache");
#endif
     sem_lock(SEM_LEAVE,ptt_semid);
     ptt->busystate = 0;
   }
}

void
resolve_garbage()
{
  int count=0;
  if (ptt == NULL)
  {
    ptt = attach_shm(PTTSHM_KEY, sizeof(*ptt));
    if (ptt->touchtime == 0)
      ptt->touchtime = 1;
  }
  while (ptt->uptime < ptt->touchtime)
   {
     count++;
     reload_pttcache();
         if(count > 3)
                {
                       ptt->busystate =0;
#if !defined(_BBS_UTIL_C_)
                       log_usies("CACHE", "error:free pttcache dead lock!");
#endif
                }
        }
}

還有menu.c的movie(i)
{  extern struct PTTCACHE *ptt;
  static short history[MAX_HISTORY];
  static char myweek[] = "天一二三四五六";
  static char buf[256],pbuf[256];
/*  static char today_is[20];*/
  struct tm *ptime;
  FILE *fp;
  time_t now;

  resolve_garbage();

  if ((currstat != CLASS) && (cuser.uflag & MOVIE_FLAG))
  {
    if(!ptt->busystate /*&& ptt->max_film*/) /* race condition */
      {
        do {
          if (!i)
            i = (rand() % ptt->max_film) + 1;
          for (now = ptt->max_history; now >= 0; now--)
             if (i == history[now]) {
               i = 0;
               break;
             }
           } while (i == 0);
      }
   else
        {
              i = 1;
        }

    memcpy(history, &history[1], ptt->max_history * sizeof(short));
    history[ptt->max_history] = now = i;

    if (i == 999)       /* Goodbye my friend */
        i = 0;

........

struct.h
struct PTTCACHE
{
  char notes[MAX_MOVIE][FNLEN];
  char today_is[20];
  int max_film;
  int max_history;
  time_t uptime;
  time_t touchtime;
  int busystate;
};

然後到util/account.c改一下
+#include "bbs.h"
#include <time.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>

#include "record.c"

/* Ptt about share memory */
struct UCACHE *uidshm;
struct PTTCACHE *ptt;
struct FROMCACHE *fcache;

static void
attach_err(shmkey, name)
  int shmkey;
  char *name;
{
  fprintf(stderr, "[%s error] key = %x\n", name, shmkey);
  exit(1);
}

static void *
attach_shm(shmkey, shmsize)
  int shmkey, shmsize;
{
  void *shmptr;
  int shmid;
  shmid = shmget(shmkey, shmsize, 0);
  if (shmid < 0)
  {
    shmid = shmget(shmkey, shmsize, IPC_CREAT | 0600);
    if (shmid < 0)
      attach_err(shmkey, "shmget");
    shmptr = (void *) shmat(shmid, NULL, 0);
    if (shmptr == (void *) -1)
      attach_err(shmkey, "shmat");
    memset(shmptr, 0, shmsize);
  }
  else
  {
    shmptr = (void *) shmat(shmid, NULL, 0);
    if (shmptr == (void *) -1)
      attach_err(shmkey, "shmat");
  }
  return shmptr;
}
void
reset_garbage()
{
  int n;
  if (ptt == NULL)
  {
    ptt = attach_shm(PTTSHM_KEY, sizeof(*ptt));
    if (ptt->touchtime == 0)
      ptt->touchtime = 1;
  }
  printf("動態看板數[%d]\n",ptt->max_film );
  printf("最大留言數[%d]\n",ptt->max_history );

  for(n=0;n<=ptt->max_film;n++)
        printf(" (%d) %s \n",n,ptt->notes[n]);

  ptt->uptime =0;
}

在account.c最後面的地方
    system(buf);
  }
  /* Ptt reset Ptt's share memory */
+  reset_garbage();
}

然後到Note建一個目錄  目錄名是<XXX>
裡面要有一些看版
然後用站長去執行reload_cache()
去/bbs下跑 bin/account 看看版有沒有讀入
如果有讀入會出縣
動態看板數[163]
最大留言數[4]
 (0) D.893242915.A/M.879619766.A
 (1) D.893242915.A/M.891441002.A
 (2) D.893242915.A/M.893242983.A
 (3) D.893242915.A/M.893573330.A
 (4) D.893242915.A/M.896819056.A
 (5) D.893242944.A/M.893242999.A
 (6) S.893344641.A/M.896465130.A
 (7) S.893344641.A/M.896495533.A
 (8) S.893344641.A/M.896543309.A
 (9) S.893344641.A/M.896528695.A
這樣的結果  這樣就改成功了  :)
這也是要使用Ptt點歌的一個必要步驟  我想應該是啦  :)