acl/samples/event/main.c
zsxxsz cc05b877a2 first commit acl to github
first commit acl to github
2013-08-18 17:42:25 +08:00

154 lines
3.3 KiB
C

#include "lib_acl.h"
typedef struct {
ACL_VSTREAM *in;
ACL_VSTRING *buf;
ACL_EVENT *event;
} STREAM_IN;
static void trigger_event(int event acl_unused, void *context acl_unused)
{
printf("timer trigger now\r\n");
}
static int __stop_event = 0;
static STREAM_IN *create_stream(ACL_EVENT *eventp)
{
STREAM_IN *in = (STREAM_IN*) acl_mymalloc(sizeof(STREAM_IN));
in->in = acl_vstream_fhopen(fileno(stdin), 0); /* 用标准输入做为输入流 */
in->buf = acl_vstring_alloc(256);
in->event = eventp;
return in;
}
static void free_stream(STREAM_IN *in)
{
acl_vstream_free(in->in);
acl_vstring_free(in->buf);
acl_myfree(in);
}
static void read_callback(int event_type acl_unused, void *context)
{
STREAM_IN *in = (STREAM_IN *) context;
int ready;
/* 尝试从输入流中读取一行数据,并且要求去掉尾部的回车换行符 */
if (acl_vstream_gets_nonl_peek(in->in, in->buf, &ready) == ACL_VSTREAM_EOF)
{
acl_event_disable_read(in->event, in->in);
printf(">>>>gets error\r\n");
free_stream(in);
__stop_event = 1;
} else if (ready) {
#define STR acl_vstring_str
/* 如果读到完整的一行数据,则显示之 */
printf(">>>>gets one line: %s\r\n", STR(in->buf));
if (strcasecmp(STR(in->buf), "QUIT") == 0) {
__stop_event = 1;
free_stream(in);
} else
ACL_VSTRING_RESET(in->buf); /* 清空缓冲区 */
}
}
static void usage(const char *procname)
{
printf("usage: %s -h [help]\r\n"
" -M [printf time meter]\r\n"
" -t select|poll|kernel [default: select]\r\n"
" -s delay_sec [defaut: 1]\r\n"
" -u delay_usec [default: 0]\r\n"
" -m timer_delay [default: 100 microsecond, disable timer if < 0]\r\n"
" -k [if timer keep on, default: 1]\r\n", procname);
}
int main(int argc acl_unused, char *argv[] acl_unused)
{
ACL_EVENT *eventp;
STREAM_IN *in;
char event_type[64];
int ch, delay_sec = 1, delay_usec = 0;
int timer_delay = 100, timer_keep = 0;
int meter = 0;
/* 初始化 acl 库 */
acl_init();
/* 将错误日志输出至标准输出 */
acl_msg_stdout_enable(1);
event_type[0] = 0;
while ((ch = getopt(argc, argv, "ht:s:u:m:kM")) > 0) {
switch (ch) {
case 'h':
usage(argv[0]);
return 0;
case 't':
ACL_SAFE_STRNCPY(event_type, optarg, sizeof(event_type));
break;
case 's':
delay_sec = atoi(optarg);
if (delay_sec < 0)
delay_sec = 0;
break;
case 'u':
delay_usec = atoi(optarg);
if (delay_usec < 0)
delay_usec = 0;
break;
case 'm':
timer_delay = atoi(optarg);
break;
case 'k':
timer_keep = 1;
break;
case 'M':
meter = 1;
break;
default:
break;
}
}
/* 创建非阻塞事件引擎 */
if (strcasecmp(event_type, "kernel") == 0)
eventp = acl_event_new_kernel(delay_sec, delay_usec);
else if (strcasecmp(event_type, "poll") == 0)
eventp = acl_event_new_poll(delay_sec, delay_usec);
else
eventp = acl_event_new_select(delay_sec, delay_usec);
if (timer_delay >= 0)
acl_event_request_timer(eventp, trigger_event, NULL,
timer_delay, timer_keep);
/* 创建输入流对象 */
in = create_stream(eventp);
/* 将标准输入置入异步 IO 监听事件中 */
acl_event_enable_read(eventp, in->in, 0, read_callback, in);
printf("begin wait input from standard in\r\n");
/* 进行事件循环中 */
while (!__stop_event) {
if (meter)
ACL_METER_TIME("begin event");
acl_event_loop(eventp);
if (meter)
ACL_METER_TIME("end event");
}
/* 释放事件引擎 */
acl_event_free(eventp);
printf("event stopped!\r\n");
return (0);
}