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How to get the current time in milliseconds from C in Linux?
...mespec spec;
clock_gettime(CLOCK_REALTIME, &spec);
s = spec.tv_sec;
ms = round(spec.tv_nsec / 1.0e6); // Convert nanoseconds to milliseconds
if (ms > 999) {
s++;
ms = 0;
}
printf("Current time: %"PRIdMAX".%03ld seconds since the Epoch\n",
...
程序员才能听得懂的笑话 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...";
i=random(4);
say word(i)
goto top;
}
36、 据说有一位软件工程师，一位硬件工程师和一位项目经理同坐车参加研讨会。不幸在从盘山公路下山时坏在半路上了。于是两位工程师和一位经理就如何修车的问题展开了讨论。硬件...
C++ obtaining milliseconds time on Linux — clock() doesn't seem to work properly
...ts. You'll get a structure like the following:
struct timeval {
time_t tv_sec;
suseconds_t tv_usec;
}
EDIT: As the two comments below suggest, clock_gettime(CLOCK_MONOTONIC) is a much better choice if you have it available, which should be almost everywhere these days.
EDIT: Someone else co...
开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
...弹性水平扩展，从而稳定承载大规模的 MQTT 客户端接入。最新版本 EMQX 5.0 可在 23 个节点的单集群中建立 1 亿个并发的 MQTT 连接。优点：支持大规模部署高可用性横向可扩展性高性能和高可靠丰富的企业功能率先采用 MQTT over QUIC
...
Execution time of C program
...
You functionally want this:
#include <sys/time.h>
struct timeval tv1, tv2;
gettimeofday(&tv1, NULL);
/* stuff to do! */
gettimeofday(&tv2, NULL);
printf ("Total time = %f seconds\n",
(double) (tv2.tv_usec - tv1.tv_usec) / 1000000 +
(double) (tv2.tv_sec - tv1.tv_s...
How to Calculate Execution Time of a Code Snippet in C++
...cond (10^-3) intervals */
return ret;
#else
/* Linux */
struct timeval tv;
gettimeofday(&tv, NULL);
uint64 ret = tv.tv_usec;
/* Convert from micro seconds (10^-6) to milliseconds (10^-3) */
ret /= 1000;
/* Adds the seconds (10^0) after converting them to milliseconds (10^-3) */
ret ...
Is there an alternative sleep function in C to milliseconds?
...on. It is defined as follows:
struct timespec {
time_t tv_sec; /* seconds */
long tv_nsec; /* nanoseconds */
};
An example msleep() function implemented using nanosleep(), continuing the sleep if it is interrupted by a signal:
#include <tim...
Broadcast receiver for checking internet connection in android app
...on;
import android.view.animation.AnimationUtils;
import android.widget.TextView;
import com.keshav.networkchangereceiverexample.receivers.NetworkChangeReceiver;
public class MainActivity extends AppCompatActivity {
private BroadcastReceiver mNetworkReceiver;
static TextView tv_check_conn...
Converting a view to Bitmap without displaying it in Android?
...Try this,
/**
* Draw the view into a bitmap.
*/
public static Bitmap getViewBitmap(View v) {
v.clearFocus();
v.setPressed(false);
boolean willNotCache = v.willNotCacheDrawing();
v.setWillNotCacheDrawing(false);
// Reset the drawing cache background color to fully transparen...
iPhone: How to get current milliseconds?
...t;
struct timeval time;
gettimeofday(&time, NULL);
long millis = (time.tv_sec * 1000) + (time.tv_usec / 1000);
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