auto iov= uv_buf_init((char*)malloc(size), size);//保存读取到的数据read_req.data = iov.base;//handle和request都有一个data域,可以用来存储上下文信息uv_fs_read(uv_default_loop(), &read_req, req->result, &iov,1, -1, on_read); }else{//errorfprintf(stderr,"error opening file: %s...
uv_buf_t是libuv 中的一种特殊的数据类型,和 Redis 的 SDS 有一点相似度,声明如下: typedef struct uv_buf_t { char* base; size_t len; } uv_buf_t; 1. 2. 3. 4. uv_buf_t可以使用uv_buf_init初始化 示例: uv_buf_t uvBuf = uv_buf_init(buf->base, nread);//初始化write的uv_buf_...
uv_read_start((uv_stream_t*) client, alloc_buffer, read_cb); 3.8、uv_buf_t 和 uv_buf_init uv_buf_t是libuv 中的一种特殊的数据类型,和 Redis 的 SDS 有一点相似度,声明如下: typedefstructuv_buf_t{char* base;size_tlen; }uv_buf_t; uv_buf_t可以使用uv_buf_init初始化 示例: uv_buf...
iov.base);}voidon_open(uv_fs_t*req){printf("%zd\n",req->result);iov=uv_buf_init(buffer,sizeof(buffer));uv_fs_read(uv_default_loop(),&_read,(int)req->result,&iov,1,-1,on_read);}intmain(){constchar*path=
typedef struct uv_buf_t { char* base; size_t len; } uv_buf_t; 常用uv_buf_init函数初始化 参数5:一般写1(在官方文档中没找到具体的介绍) 参数6:偏移量,一般写-1 参数7:读文件成功/失败所调用的回调函数,函数原型同uv_fs_open函数的回调函数。
void on_open(uv_fs_t *req) { // The request passed to the callback is the same as the one the call setup // function was passed. assert(req == &open_req); if (req->result >= 0) { iov = uv_buf_init(buffer, sizeof(buffer)); ...
r = uv_udp_init(uv_default_loop(),&client); ASSERT(r == 0); buf = uv_buf_init("PING", 4); r = uv_udp_send(&req, &client,&buf, 1, addr, cl_send_cb); voidcl_send_cb(uv_udp_send_t* req,intstatus) {} UDP服务端: r = uv_udp_init(uv_default_loop(),&server); ...
// on_wrote_init_ack will be called. The peer state is passed to the write // request via the data pointer; the write request does not own this peer // state - it's owned by the client handle. uv_buf_t writebuf = uv_buf_init(peerstate->sendbuf, peerstate->sendbuf_end); ...
void on_open(uv_fs_t *req) { // The request passed to the callback is the same as the one the call setup // function was passed. assert(req == &open_req); if (req->result >= 0) { iov = uv_buf_init(buffer, sizeof(buffer)); ...
bufs:为要发送的数据,指向req的data部分,可以使用uv_buf_init对其进行初始化 addr send_cb用于回调发送状态 libuv pipe api介绍 intuv_read_start(uv_stream_t*stream,uv_alloc_cb alloc_cb,uv_read_cb read_cb) 参数stream:要监控的对象可以是uv_pipe_t、uv_udp_t、uv_tcp_t等。