注意，结构体传入数据

一开始int* 不能变成void

传入int ** 也会失效，

只能一开始在message 结构体里有 int* 类型才能运行

这是通过打印表格得到的

使用raylib 开发

#include <raylib.h>
#include <stdio.h>
#include <math.h>
#include <time.h>
#include <pthread.h>

typedef struct message {
	int flag;
	int a;
	int user;
	void* work;
	int* map;
} message;


void* showv2(void* msg) {
	
	static int cnt = 0;
	static int color = 1;
	message* m = (message*)msg;
	
//	二维数组失效
//	int** meshmap = (int**)m->work;
	
	
	// 一维数组测试
//	int* map =(int*)(*m).work;
	int* map = m->map;
	
	while (1) {
		while (m->flag == 0 || m->a == 1) {
//			_sleep(1);
			_sleep(0);
			printf("B 发现占用中 %d %d %d %d %d\n", m->a, m->user, m->flag, cnt, color);
		}
		m->a = 1;
		m->user = 1;
		printf("B 占用中\n");
		
		for (int p = 0; p < 1500; p++) {
			cnt += 1;
			if (cnt >= 500 * 500) {
				cnt = 0;
				color += 1;
			}
			map[cnt] = color;
//			printf("%d\n", cnt);
		}
		
//		printf("%d %d\n", cnt, color);
		
		printf("B 释放占用\n");
		m->a = 0;
		_sleep(30);
	}
}


int main() {
	
	InitWindow(500, 500, "okk");
	
	RenderTexture mesh = LoadRenderTexture(500, 500);
	BeginTextureMode(mesh);
	ClearBackground(WHITE);
	EndTextureMode();
	
	
	message msg;
	msg.a = 0;
	msg.flag = 0;
	msg.user = -1;
	
	int*map = new int[500 * 500];
	for (int i = 0; i < 500 * 500; i++) {
		map[i] = 0;
	}
	
	msg.work = (void*)&map;
	msg.map = map;
	
	pthread_t p;
	pthread_create(&p, NULL, showv2, (void*)&msg);
	
	int i = 0;
	int j = 0;
	int cnt = 0;
	int color = 1;
	int pv2 = 0;
	SetTargetFPS(60);
	
	while (1) {
		while (msg.a == 1) {
			printf("C 发现占用中%d\n", msg.user);
			_sleep(10);
		}
		msg.a = 1;
		msg.user = 999;
		printf("C 占用中\n");
		BeginTextureMode(mesh);
		
		for(int i=0;i<500*500;i++){
			DrawPixel(i%500,i/500,{map[i]*10%255,map[i]*50%255,map[i]*30%255,255});
		}
		EndTextureMode();
		
		msg.a = 0;
		printf("C 释放\n");
		BeginDrawing();
		DrawTexturePro(mesh.texture,{0,0,500,500},{0,0,500,500},{0,0},0,WHITE);
		DrawTexture(mesh.texture, 0, 0, WHITE);
		
		DrawText(TextFormat("fps %d", GetFPS()), 20, 30, 50, {155, 50, 210, 255});
		EndDrawing();
		
		
		static int flag = 0;
		if (flag > 30) {
			flag = 300;
			msg.flag = 1;
		} else {
			flag++;
		}
	}
	
	
}