我写过linux下的哲学家思考的问题，近日想移植到c4，发现不支持信号量，哪位大神知道，烦解惑一下，谢谢了！

对了，还有多线程，我写是也是linux环境的，在c4也不行，大神给指点下开多线程！

信号量没用过，不清楚。至于开多线程，你可以试试sdl2，不过你的输出形式得改一下

看着好刁...帮你顶帖

基本上，你说说你会用到哪些头文件？线程的话pthread和std::thread都可以用啊。
<sys/xxx>的头文件也蛮多，你说的信号量是多线程中用到的东西么，多线程C4还是支持的，我不明白泪，你为啥要还到C4上写，，，，

////////////////////////////////////////
//File : PhilosopherDining.c
//Author : Savage
//About : philosopher dining problem
//Savage (C) 2007
//EM:[email protected]
////////////////////////////////////////
////////////////HEAD FILES//////////////
#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <time.h>
#include <sys/sem.h>
#include <sys/types.h>
#include <sys/shm.h>
#include <unistd.h>
#include <curses.h>
///////////////MACRO DEFINITION//////////////
#define N 5//the number of philosaphers
#define K 3+1//philosopher's state Kinds:3 + block time title num
#define THINKING 0//philosopher's thinking state
#define HUNGRY 1//philosopher's hungry state
#define EATING 2//philosopher's eating state
#define F ' '//representation of philosopher's state on screen
#define T -10//representation of philosopher's state on screen
///////GLOBE VARIABLE DECLARE AREA///////
double RunTime;//process execute_time
int state[N];//record philosophers's state
char scrstate[K-1][N];//record flag for screen
char LTitle[K][10]={"Thinking :"," Hungry :"," Eating :","WaitTime :"};//left title
int semid;//semaphore id
time_t start;//record rocking time
bool printbln[N];//boolean variable for contrl print block clocks
time_t blkclk[N];//record block time
//////////FUNCTIONS DECLARE AREA//////////
void P(int);//mutex semaphore P operate:semaphore - 1
void V(int);//mutex semaphore V operate:semaphore + 1
void initialize();//initialize semaphore ,philosophers' state,and so on
void OpenThread();//open thread for each philosopher
void philosopher(int);//philosopher's behavior
void iniscr();//initialize and start text graph mode
void exitscr();//exit text graph mode
void test(int);//To test the philosopher's state who is beside him
void ShowState();//Print the philosopher's state
void Printblkclk();//print philosapher blocked time
///////////////////MAIN PROCCESS/////////////////
main()
{
printf("*******Initializing...*******\n");

android有自己的一套IPC框架

pthread和fork都能用 不知道你原来用什么实现的

问题出在开线程这↓
void OpenThread()
{
int i;
pthread_t id[N];
pthread_attr_t attr;
pthread_attr_init(&attr); //set philosapher thread's attribute
pthread_attr_setscope(&attr,PTHREAD_SCOPE_PROCESS); //No binding
pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_DETACHED);//detached
start=time(NULL); //Start rocking time;
srand(start);//initialize random
ShowState(); //Show the philosopher's begining state
for(i=0;i<N;i++)//Creat N thread for N philosopher
{
if(pthread_create(&id[i],&attr,(void *) philosopher,(void *) i)!=0)
{
printf("Create the %d thread error!\n",i);
exit(1);
}
pthread_join(id[i],NULL);
}
if(pthread_create(&id[i],&attr,(void *) Printblkclk,NULL)!=0)
{
printf("Create the print block clocks thread error!\n");
exit(1);
}
pthread_join(id[i],NULL);
}