有很多关于如何每 N 秒执行某项操作的提示，但我没有发现任何内容明确说明这些方法中的任何一个是否由于延迟而慢慢地与系统时钟不同步。
我有一个在 Windows 上运行的多线程应用程序。我需要知道在更高优先级任务和线程允许的尽可能少的毫秒内，一个特定线程将根据系统时钟在“精确”凌晨 1 点可靠地执行，然后在凌晨 1 点 + N 秒、凌晨 1 点 + 2N 秒等。 .. 并在晚上 11 点、晚上 11 点 + N、晚上 11 点 + 2N 之前一直可靠地执行此操作，依此类推。是的 - 情况(无论如何对我来说)每小时有整数个 N 秒周期。
我完全希望线程执行的实际时间为 1am + d1、1am + N + d2、1am + 2N + d3，...其中每个 d(i) 都是一些延迟增量。这也很好，只要 delta 值的分布保持相当一致且相当低——通常最多只有几十毫秒，很少有峰值高于此值。我不介意系统时钟是否与全局时间标准不同步。
为此，我可以使用哪些时序结构？有没有什么东西可以自己保持同步，或者我是否必须编写一些代码来随着处理器负载在一天中的上升和下降而不断调整自身以保持同步？
最佳答案
只要看看从现在到下一次您应该醒来的时间，然后睡那么长的时间。因此，不是将重复计时器设置为每 n 秒关闭，而是在每次唤醒时设置一个一次性计时器，无论您从现在到时间轴上的下一个点之间需要经过多少时间。
更新:我编写了一个测试程序来查看重复计时器是否会漂移。
程序在下一分钟开始，然后每 5 秒唤醒一次:
#include <windows.h>
#include<stdio.h>
ULONGLONG convertTime(SYSTEMTIME st) {
FILETIME ft;
ULARGE_INTEGER tm;
SystemTimeToFileTime(&st, &ft);
tm.u.LowPart = ft.dwLowDateTime;
tm.u.HighPart = ft.dwHighDateTime;
return tm.QuadPart;
}
ULONGLONG getNextMinute() {
SYSTEMTIME now;
GetSystemTime(&now);
ULONGLONG ONE_MINUTE = 60 * 10000000;
ULONGLONG nowNumeric = convertTime(now);
ULONGLONG desiredTime = ((ULONGLONG)(nowNumeric / ONE_MINUTE)) * ONE_MINUTE + ONE_MINUTE;
return desiredTime;
}
int main(int argc, char* argv[]) {
ULONGLONG startTimeForTimer = getNextMinute();
HANDLE hTimer = NULL;
hTimer = CreateWaitableTimer(NULL, FALSE, NULL);
if (NULL == hTimer) {
printf("CreateWaitableTimer failed (%d)\n", GetLastError());
return 1;
}
printf("Waiting for the next minute to start...\n");
// Set a timer to wait for 5 seconds.
if (!SetWaitableTimer(hTimer, &startTimeForTimer, 5000, NULL, NULL, 0))
{
printf("SetWaitableTimer failed (%d)\n", GetLastError());
return 2;
}
// Wait for the timer.
SYSTEMTIME beforeTime;
SYSTEMTIME afterTime;
GetSystemTime(&beforeTime);
while (WaitForSingleObject(hTimer, INFINITE) == WAIT_OBJECT_0) {
GetSystemTime(&afterTime);
ULONGLONG elapsedTime = convertTime(afterTime) - convertTime(beforeTime);
printf("Timer was signaled: elapsed=%I64u, seconds=%02d.%02d\n", elapsedTime, afterTime.wSecond, afterTime.wMilliseconds);
GetSystemTime(&beforeTime);
}
return 0;
}
这是运行一段时间后的结果(删除了一些无趣的位)。 seconds= 位是当前分钟后的秒数(精确到千分之一秒):
Timer was signaled: elapsed=297650000, seconds=59.98
Timer was signaled: elapsed=50000000, seconds=04.986
Timer was signaled: elapsed=50000000, seconds=09.986
Timer was signaled: elapsed=50000000, seconds=14.986
Timer was signaled: elapsed=50000000, seconds=19.986
...
Timer was signaled: elapsed=50000000, seconds=09.986
Timer was signaled: elapsed=49990000, seconds=14.985
Timer was signaled: elapsed=50000000, seconds=19.985
...
Timer was signaled: elapsed=50000000, seconds=24.985
Timer was signaled: elapsed=49990000, seconds=29.984
...
Timer was signaled: elapsed=50000000, seconds=54.973
Timer was signaled: elapsed=50000000, seconds=59.973
Timer was signaled: elapsed=50000000, seconds=04.973
Timer was signaled: elapsed=49990000, seconds=09.972
Timer was signaled: elapsed=50000000, seconds=14.972
Timer was signaled: elapsed=50000000, seconds=19.972
Timer was signaled: elapsed=50000000, seconds=24.972
Timer was signaled: elapsed=50020000, seconds=29.974
Timer was signaled: elapsed=50020000, seconds=34.976
Timer was signaled: elapsed=50020000, seconds=39.978
Timer was signaled: elapsed=50020000, seconds=44.980
Timer was signaled: elapsed=50020000, seconds=49.982
Timer was signaled: elapsed=50020000, seconds=54.984
Timer was signaled: elapsed=50010000, seconds=59.985
Timer was signaled: elapsed=50020000, seconds=04.987
Timer was signaled: elapsed=50020000, seconds=09.989
Timer was signaled: elapsed=50020000, seconds=14.991
Timer was signaled: elapsed=50020000, seconds=19.993
Timer was signaled: elapsed=50020000, seconds=24.995
Timer was signaled: elapsed=50020000, seconds=29.997
Timer was signaled: elapsed=50020000, seconds=34.999
Timer was signaled: elapsed=50020000, seconds=40.01
Timer was signaled: elapsed=50020000, seconds=45.03
Timer was signaled: elapsed=50020000, seconds=50.05
Timer was signaled: elapsed=50020000, seconds=55.07
Timer was signaled: elapsed=50020000, seconds=00.09
Timer was signaled: elapsed=50010000, seconds=05.10
Timer was signaled: elapsed=50020000, seconds=10.12
Timer was signaled: elapsed=50020000, seconds=15.14
Timer was signaled: elapsed=50020000, seconds=20.16
Timer was signaled: elapsed=50020000, seconds=25.18
Timer was signaled: elapsed=50020000, seconds=30.20
Timer was signaled: elapsed=50020000, seconds=35.22
Timer was signaled: elapsed=50020000, seconds=40.24
Timer was signaled: elapsed=50020000, seconds=45.26
Timer was signaled: elapsed=50020000, seconds=50.28
Timer was signaled: elapsed=50020000, seconds=55.30
Timer was signaled: elapsed=50020000, seconds=00.32
Timer was signaled: elapsed=50010000, seconds=05.33
Timer was signaled: elapsed=50020000, seconds=10.35
Timer was signaled: elapsed=50020000, seconds=15.37
Timer was signaled: elapsed=50020000, seconds=20.39
Timer was signaled: elapsed=50020000, seconds=25.41
Timer was signaled: elapsed=50020000, seconds=30.43
Timer was signaled: elapsed=50020000, seconds=35.45
Timer was signaled: elapsed=50020000, seconds=40.47
Timer was signaled: elapsed=50020000, seconds=45.49
Timer was signaled: elapsed=50020000, seconds=50.51
Timer was signaled: elapsed=50020000, seconds=55.53
Timer was signaled: elapsed=50170000, seconds=00.70
Timer was signaled: elapsed=49870000, seconds=05.57
Timer was signaled: elapsed=50010000, seconds=10.58
Timer was signaled: elapsed=50020000, seconds=15.60
Timer was signaled: elapsed=50020000, seconds=20.62
Timer was signaled: elapsed=50020000, seconds=25.64
Timer was signaled: elapsed=50020000, seconds=30.66
Timer was signaled: elapsed=50020000, seconds=35.68
Timer was signaled: elapsed=50020000, seconds=40.70
Timer was signaled: elapsed=50020000, seconds=45.72
Timer was signaled: elapsed=50020000, seconds=50.74
Timer was signaled: elapsed=50020000, seconds=55.76
Timer was signaled: elapsed=50020000, seconds=00.78
Timer was signaled: elapsed=50020000, seconds=05.80
Timer was signaled: elapsed=50010000, seconds=10.81
Timer was signaled: elapsed=50020000, seconds=15.83
Timer was signaled: elapsed=50020000, seconds=20.85
Timer was signaled: elapsed=50020000, seconds=25.87
Timer was signaled: elapsed=50010000, seconds=30.88
Timer was signaled: elapsed=50010000, seconds=35.89
Timer was signaled: elapsed=50000000, seconds=40.89
Timer was signaled: elapsed=50010000, seconds=45.90
Timer was signaled: elapsed=50010000, seconds=50.91
Timer was signaled: elapsed=50000000, seconds=55.91
Timer was signaled: elapsed=50010000, seconds=00.92
Timer was signaled: elapsed=50010000, seconds=05.93
Timer was signaled: elapsed=50000000, seconds=10.93
Timer was signaled: elapsed=50010000, seconds=15.94
Timer was signaled: elapsed=50010000, seconds=20.95
Timer was signaled: elapsed=50000000, seconds=25.95
Timer was signaled: elapsed=50010000, seconds=30.96
Timer was signaled: elapsed=50010000, seconds=35.97
Timer was signaled: elapsed=50000000, seconds=40.97
Timer was signaled: elapsed=50010000, seconds=45.98
Timer was signaled: elapsed=50010000, seconds=50.99
Timer was signaled: elapsed=50000000, seconds=55.99
Timer was signaled: elapsed=50010000, seconds=00.100
Timer was signaled: elapsed=50010000, seconds=05.101
Timer was signaled: elapsed=50000000, seconds=10.101
Timer was signaled: elapsed=50010000, seconds=15.102
Timer was signaled: elapsed=50010000, seconds=20.103
Timer was signaled: elapsed=50010000, seconds=25.104
Timer was signaled: elapsed=50000000, seconds=30.104
Timer was signaled: elapsed=50010000, seconds=35.105
Timer was signaled: elapsed=50010000, seconds=40.106
Timer was signaled: elapsed=50000000, seconds=45.106
Timer was signaled: elapsed=50010000, seconds=50.107
Timer was signaled: elapsed=50010000, seconds=55.108
Timer was signaled: elapsed=50000000, seconds=00.108
Timer was signaled: elapsed=50010000, seconds=05.109
Timer was signaled: elapsed=50010000, seconds=10.110
Timer was signaled: elapsed=50000000, seconds=15.110
Timer was signaled: elapsed=50010000, seconds=20.111
Timer was signaled: elapsed=50010000, seconds=25.112
Timer was signaled: elapsed=50000000, seconds=30.112
Timer was signaled: elapsed=50010000, seconds=35.113
Timer was signaled: elapsed=50010000, seconds=40.114
Timer was signaled: elapsed=50000000, seconds=45.114
Timer was signaled: elapsed=50010000, seconds=50.115
Timer was signaled: elapsed=50010000, seconds=55.116
Timer was signaled: elapsed=50000000, seconds=00.116
Timer was signaled: elapsed=50010000, seconds=05.117
Timer was signaled: elapsed=50010000, seconds=10.118
Timer was signaled: elapsed=50000000, seconds=15.118
Timer was signaled: elapsed=50010000, seconds=20.119
Timer was signaled: elapsed=50010000, seconds=25.120
Timer was signaled: elapsed=50000000, seconds=30.120
Timer was signaled: elapsed=50010000, seconds=35.121
Timer was signaled: elapsed=50010000, seconds=40.122
Timer was signaled: elapsed=50000000, seconds=45.122
Timer was signaled: elapsed=50010000, seconds=50.123
Timer was signaled: elapsed=50010000, seconds=55.124
Timer was signaled: elapsed=50000000, seconds=00.124
Timer was signaled: elapsed=50010000, seconds=05.125
Timer was signaled: elapsed=50010000, seconds=10.126
Timer was signaled: elapsed=50000000, seconds=15.126
Timer was signaled: elapsed=50010000, seconds=20.127
Timer was signaled: elapsed=50010000, seconds=25.128
Timer was signaled: elapsed=50000000, seconds=30.128
Timer was signaled: elapsed=50000000, seconds=35.128
Timer was signaled: elapsed=50000000, seconds=40.128
Timer was signaled: elapsed=50010000, seconds=45.129
Timer was signaled: elapsed=50000000, seconds=50.129
Timer was signaled: elapsed=50000000, seconds=55.129
Timer was signaled: elapsed=50000000, seconds=00.129
Timer was signaled: elapsed=50000000, seconds=05.129
Timer was signaled: elapsed=50000000, seconds=10.129
Timer was signaled: elapsed=50010000, seconds=15.130
Timer was signaled: elapsed=50000000, seconds=20.130
Timer was signaled: elapsed=50000000, seconds=25.130
Timer was signaled: elapsed=50000000, seconds=30.130
Timer was signaled: elapsed=50000000, seconds=35.130
Timer was signaled: elapsed=50010000, seconds=40.131
Timer was signaled: elapsed=50000000, seconds=45.131
Timer was signaled: elapsed=50000000, seconds=50.131
Timer was signaled: elapsed=50000000, seconds=55.131
Timer was signaled: elapsed=50000000, seconds=00.131
Timer was signaled: elapsed=50010000, seconds=05.132
Timer was signaled: elapsed=50000000, seconds=10.132
Timer was signaled: elapsed=50000000, seconds=15.132
Timer was signaled: elapsed=50000000, seconds=20.132
Timer was signaled: elapsed=50000000, seconds=25.132
Timer was signaled: elapsed=50010000, seconds=30.133
Timer was signaled: elapsed=50000000, seconds=35.133
Timer was signaled: elapsed=50000000, seconds=40.133
Timer was signaled: elapsed=50000000, seconds=45.133
Timer was signaled: elapsed=50000000, seconds=50.133
Timer was signaled: elapsed=50010000, seconds=55.134
Timer was signaled: elapsed=50000000, seconds=00.134
Timer was signaled: elapsed=50000000, seconds=05.134
Timer was signaled: elapsed=50000000, seconds=10.134
Timer was signaled: elapsed=50000000, seconds=15.134
Timer was signaled: elapsed=50000000, seconds=20.134
Timer was signaled: elapsed=50010000, seconds=25.135
Timer was signaled: elapsed=50000000, seconds=30.135
Timer was signaled: elapsed=50000000, seconds=35.135
Timer was signaled: elapsed=50000000, seconds=40.135
Timer was signaled: elapsed=50000000, seconds=45.135
Timer was signaled: elapsed=50010000, seconds=50.136
Timer was signaled: elapsed=50000000, seconds=55.136
Timer was signaled: elapsed=50000000, seconds=00.136
Timer was signaled: elapsed=50000000, seconds=05.136
Timer was signaled: elapsed=50000000, seconds=10.136
Timer was signaled: elapsed=50010000, seconds=15.137
Timer was signaled: elapsed=50000000, seconds=20.137
Timer was signaled: elapsed=50000000, seconds=25.137
Timer was signaled: elapsed=50000000, seconds=30.137
Timer was signaled: elapsed=50000000, seconds=35.137
Timer was signaled: elapsed=50010000, seconds=40.138
Timer was signaled: elapsed=50000000, seconds=45.138
Timer was signaled: elapsed=50000000, seconds=50.138
Timer was signaled: elapsed=50000000, seconds=55.138
Timer was signaled: elapsed=50000000, seconds=00.138
Timer was signaled: elapsed=50010000, seconds=05.139
Timer was signaled: elapsed=50000000, seconds=10.139
Timer was signaled: elapsed=50000000, seconds=15.139
Timer was signaled: elapsed=50000000, seconds=20.139
Timer was signaled: elapsed=50000000, seconds=25.139
Timer was signaled: elapsed=50000000, seconds=30.139
Timer was signaled: elapsed=50000000, seconds=35.139
Timer was signaled: elapsed=50000000, seconds=40.139
Timer was signaled: elapsed=50000000, seconds=45.139
Timer was signaled: elapsed=50000000, seconds=50.139
Timer was signaled: elapsed=50000000, seconds=55.139
Timer was signaled: elapsed=50010000, seconds=00.140
Timer was signaled: elapsed=50000000, seconds=05.140
Timer was signaled: elapsed=50000000, seconds=10.140
Timer was signaled: elapsed=50000000, seconds=15.140
Timer was signaled: elapsed=50000000, seconds=20.140
Timer was signaled: elapsed=50000000, seconds=25.140
Timer was signaled: elapsed=50000000, seconds=30.140
Timer was signaled: elapsed=50000000, seconds=35.140
Timer was signaled: elapsed=50000000, seconds=40.140
Timer was signaled: elapsed=50000000, seconds=45.140
Timer was signaled: elapsed=50000000, seconds=50.140
Timer was signaled: elapsed=50000000, seconds=55.140
Timer was signaled: elapsed=50000000, seconds=00.140
Timer was signaled: elapsed=50000000, seconds=05.140
Timer was signaled: elapsed=50000000, seconds=10.140
Timer was signaled: elapsed=50000000, seconds=15.140
Timer was signaled: elapsed=50000000, seconds=20.140
Timer was signaled: elapsed=50000000, seconds=25.140
Timer was signaled: elapsed=50000000, seconds=30.140
Timer was signaled: elapsed=50000000, seconds=35.140
Timer was signaled: elapsed=50000000, seconds=40.140
Timer was signaled: elapsed=50000000, seconds=45.140
Timer was signaled: elapsed=50000000, seconds=50.140
Timer was signaled: elapsed=50000000, seconds=55.140
Timer was signaled: elapsed=50000000, seconds=00.140
Timer was signaled: elapsed=50000000, seconds=05.140
Timer was signaled: elapsed=50000000, seconds=10.140
Timer was signaled: elapsed=50000000, seconds=15.140
Timer was signaled: elapsed=50000000, seconds=20.140
Timer was signaled: elapsed=50000000, seconds=25.140
Timer was signaled: elapsed=50000000, seconds=30.140
Timer was signaled: elapsed=50010000, seconds=35.141
Timer was signaled: elapsed=50000000, seconds=40.141
Timer was signaled: elapsed=50000000, seconds=45.141
Timer was signaled: elapsed=50000000, seconds=50.141
Timer was signaled: elapsed=50000000, seconds=55.141
Timer was signaled: elapsed=50000000, seconds=00.141
Timer was signaled: elapsed=50000000, seconds=05.141
Timer was signaled: elapsed=50000000, seconds=10.141
Timer was signaled: elapsed=50000000, seconds=15.141
Timer was signaled: elapsed=50000000, seconds=20.141
Timer was signaled: elapsed=50000000, seconds=25.141
Timer was signaled: elapsed=50000000, seconds=30.141
Timer was signaled: elapsed=50000000, seconds=35.141
Timer was signaled: elapsed=50000000, seconds=40.141
Timer was signaled: elapsed=50000000, seconds=45.141
Timer was signaled: elapsed=50000000, seconds=50.141
Timer was signaled: elapsed=50000000, seconds=55.141
Timer was signaled: elapsed=50000000, seconds=00.141
Timer was signaled: elapsed=50000000, seconds=05.141
Timer was signaled: elapsed=50000000, seconds=10.141
Timer was signaled: elapsed=50000000, seconds=15.141
Timer was signaled: elapsed=50000000, seconds=20.141
Timer was signaled: elapsed=50000000, seconds=25.141
Timer was signaled: elapsed=50000000, seconds=30.141
Timer was signaled: elapsed=50000000, seconds=35.141
Timer was signaled: elapsed=50000000, seconds=40.141
Timer was signaled: elapsed=50000000, seconds=45.141
Timer was signaled: elapsed=50000000, seconds=50.141
Timer was signaled: elapsed=50000000, seconds=55.141
Timer was signaled: elapsed=50000000, seconds=00.141
Timer was signaled: elapsed=50000000, seconds=05.141
Timer was signaled: elapsed=50000000, seconds=10.141
Timer was signaled: elapsed=50000000, seconds=15.141
Timer was signaled: elapsed=50000000, seconds=20.141
Timer was signaled: elapsed=50000000, seconds=25.141
Timer was signaled: elapsed=50000000, seconds=30.141
Timer was signaled: elapsed=50000000, seconds=35.141
Timer was signaled: elapsed=50000000, seconds=40.141
Timer was signaled: elapsed=50000000, seconds=45.141
Timer was signaled: elapsed=50000000, seconds=50.141
Timer was signaled: elapsed=50000000, seconds=55.141
Timer was signaled: elapsed=50000000, seconds=00.141
Timer was signaled: elapsed=50000000, seconds=05.141
Timer was signaled: elapsed=50000000, seconds=10.141
Timer was signaled: elapsed=50000000, seconds=15.141
Timer was signaled: elapsed=49990000, seconds=20.140
Timer was signaled: elapsed=50000000, seconds=25.140
Timer was signaled: elapsed=50000000, seconds=30.140
Timer was signaled: elapsed=50000000, seconds=35.140
Timer was signaled: elapsed=50000000, seconds=40.140
Timer was signaled: elapsed=50000000, seconds=45.140
Timer was signaled: elapsed=50000000, seconds=50.140
Timer was signaled: elapsed=50000000, seconds=55.140
Timer was signaled: elapsed=50000000, seconds=00.140
Timer was signaled: elapsed=50000000, seconds=05.140
Timer was signaled: elapsed=50000000, seconds=10.140
Timer was signaled: elapsed=50000000, seconds=15.140
Timer was signaled: elapsed=50000000, seconds=20.140
Timer was signaled: elapsed=50000000, seconds=25.140
Timer was signaled: elapsed=50000000, seconds=30.140
Timer was signaled: elapsed=50000000, seconds=35.140
Timer was signaled: elapsed=50000000, seconds=40.140
Timer was signaled: elapsed=50000000, seconds=45.140
Timer was signaled: elapsed=50000000, seconds=50.140
Timer was signaled: elapsed=50000000, seconds=55.140
Timer was signaled: elapsed=50000000, seconds=00.140
Timer was signaled: elapsed=50000000, seconds=05.140
Timer was signaled: elapsed=50000000, seconds=10.140
Timer was signaled: elapsed=50000000, seconds=15.140
Timer was signaled: elapsed=50000000, seconds=20.140
Timer was signaled: elapsed=50000000, seconds=25.140
Timer was signaled: elapsed=50000000, seconds=30.140
Timer was signaled: elapsed=50000000, seconds=35.140
Timer was signaled: elapsed=50000000, seconds=40.140
Timer was signaled: elapsed=50000000, seconds=45.140
Timer was signaled: elapsed=50000000, seconds=50.140
Timer was signaled: elapsed=49990000, seconds=55.139
Timer was signaled: elapsed=50000000, seconds=00.139
Timer was signaled: elapsed=50000000, seconds=05.139
Timer was signaled: elapsed=50000000, seconds=10.139
Timer was signaled: elapsed=50000000, seconds=15.139
Timer was signaled: elapsed=50000000, seconds=20.139
Timer was signaled: elapsed=50000000, seconds=25.139
Timer was signaled: elapsed=50000000, seconds=30.139
Timer was signaled: elapsed=50000000, seconds=35.139
Timer was signaled: elapsed=50000000, seconds=40.139
Timer was signaled: elapsed=50000000, seconds=45.139
Timer was signaled: elapsed=50000000, seconds=50.139
Timer was signaled: elapsed=50000000, seconds=55.139
Timer was signaled: elapsed=50000000, seconds=00.139
Timer was signaled: elapsed=50000000, seconds=05.139
Timer was signaled: elapsed=50000000, seconds=10.139
Timer was signaled: elapsed=50000000, seconds=15.139
Timer was signaled: elapsed=50000000, seconds=20.139
Timer was signaled: elapsed=50000000, seconds=25.139
Timer was signaled: elapsed=49990000, seconds=30.138
Timer was signaled: elapsed=50000000, seconds=35.138
Timer was signaled: elapsed=50000000, seconds=40.138
Timer was signaled: elapsed=50000000, seconds=45.138
Timer was signaled: elapsed=50000000, seconds=50.138
Timer was signaled: elapsed=50000000, seconds=55.138
Timer was signaled: elapsed=50000000, seconds=00.138
Timer was signaled: elapsed=50000000, seconds=05.138
Timer was signaled: elapsed=50000000, seconds=10.138
Timer was signaled: elapsed=50000000, seconds=15.138
Timer was signaled: elapsed=50000000, seconds=20.138
Timer was signaled: elapsed=50000000, seconds=25.138
Timer was signaled: elapsed=50000000, seconds=30.138
Timer was signaled: elapsed=50000000, seconds=35.138
Timer was signaled: elapsed=50000000, seconds=40.138
Timer was signaled: elapsed=50000000, seconds=45.138
Timer was signaled: elapsed=49990000, seconds=50.137
Timer was signaled: elapsed=50000000, seconds=55.137
Timer was signaled: elapsed=50000000, seconds=00.137
Timer was signaled: elapsed=50000000, seconds=05.137
Timer was signaled: elapsed=50000000, seconds=10.137
Timer was signaled: elapsed=50000000, seconds=15.137
Timer was signaled: elapsed=50000000, seconds=20.137
Timer was signaled: elapsed=50000000, seconds=25.137
Timer was signaled: elapsed=50000000, seconds=30.137
Timer was signaled: elapsed=50000000, seconds=35.137
Timer was signaled: elapsed=50000000, seconds=40.137
Timer was signaled: elapsed=50000000, seconds=45.137
Timer was signaled: elapsed=50000000, seconds=50.137
Timer was signaled: elapsed=50000000, seconds=55.137
Timer was signaled: elapsed=50000000, seconds=00.137
Timer was signaled: elapsed=49990000, seconds=05.136
Timer was signaled: elapsed=50000000, seconds=10.136
Timer was signaled: elapsed=50000000, seconds=15.136
Timer was signaled: elapsed=50000000, seconds=20.136
Timer was signaled: elapsed=50000000, seconds=25.136
Timer was signaled: elapsed=50000000, seconds=30.136
Timer was signaled: elapsed=50000000, seconds=35.136
Timer was signaled: elapsed=50000000, seconds=40.136
Timer was signaled: elapsed=50000000, seconds=45.136
Timer was signaled: elapsed=50000000, seconds=50.136
Timer was signaled: elapsed=50000000, seconds=55.136
Timer was signaled: elapsed=50000000, seconds=00.136
Timer was signaled: elapsed=50000000, seconds=05.136
Timer was signaled: elapsed=50000000, seconds=10.136
Timer was signaled: elapsed=50000000, seconds=15.136
Timer was signaled: elapsed=50000000, seconds=20.136
Timer was signaled: elapsed=49990000, seconds=25.135
Timer was signaled: elapsed=50000000, seconds=30.135
Timer was signaled: elapsed=50000000, seconds=35.135
Timer was signaled: elapsed=50000000, seconds=40.135
Timer was signaled: elapsed=50000000, seconds=45.135
Timer was signaled: elapsed=50000000, seconds=50.135
Timer was signaled: elapsed=50000000, seconds=55.135
Timer was signaled: elapsed=50000000, seconds=00.135
Timer was signaled: elapsed=50000000, seconds=05.135
Timer was signaled: elapsed=50000000, seconds=10.135
Timer was signaled: elapsed=50000000, seconds=15.135
Timer was signaled: elapsed=50000000, seconds=20.135
Timer was signaled: elapsed=50000000, seconds=25.135
Timer was signaled: elapsed=50000000, seconds=30.135
Timer was signaled: elapsed=50000000, seconds=35.135
Timer was signaled: elapsed=50000000, seconds=40.135
Timer was signaled: elapsed=49990000, seconds=45.134
Timer was signaled: elapsed=50000000, seconds=50.134
Timer was signaled: elapsed=50000000, seconds=55.134
Timer was signaled: elapsed=50000000, seconds=00.134
Timer was signaled: elapsed=50000000, seconds=05.134
Timer was signaled: elapsed=50000000, seconds=10.134
Timer was signaled: elapsed=50000000, seconds=15.134
Timer was signaled: elapsed=50000000, seconds=20.134
Timer was signaled: elapsed=50000000, seconds=25.134
Timer was signaled: elapsed=50000000, seconds=30.134
Timer was signaled: elapsed=50000000, seconds=35.134
Timer was signaled: elapsed=50000000, seconds=40.134
Timer was signaled: elapsed=50000000, seconds=45.134
Timer was signaled: elapsed=50000000, seconds=50.134
Timer was signaled: elapsed=50000000, seconds=55.134
Timer was signaled: elapsed=49990000, seconds=00.133
Timer was signaled: elapsed=50000000, seconds=05.133
Timer was signaled: elapsed=50000000, seconds=10.133
Timer was signaled: elapsed=50000000, seconds=15.133
Timer was signaled: elapsed=50000000, seconds=20.133
Timer was signaled: elapsed=50000000, seconds=25.133
Timer was signaled: elapsed=50000000, seconds=30.133
Timer was signaled: elapsed=50000000, seconds=35.133
Timer was signaled: elapsed=50000000, seconds=40.133
Timer was signaled: elapsed=50000000, seconds=45.133
Timer was signaled: elapsed=50000000, seconds=50.133
Timer was signaled: elapsed=50000000, seconds=55.133
Timer was signaled: elapsed=50000000, seconds=00.133
Timer was signaled: elapsed=50000000, seconds=05.133
Timer was signaled: elapsed=50000000, seconds=10.133
Timer was signaled: elapsed=50000000, seconds=15.133
Timer was signaled: elapsed=49990000, seconds=20.132
Timer was signaled: elapsed=50000000, seconds=25.132
Timer was signaled: elapsed=50000000, seconds=30.132
Timer was signaled: elapsed=50000000, seconds=35.132
Timer was signaled: elapsed=50000000, seconds=40.132
Timer was signaled: elapsed=50000000, seconds=45.132
Timer was signaled: elapsed=50000000, seconds=50.132
Timer was signaled: elapsed=50000000, seconds=55.132
Timer was signaled: elapsed=50000000, seconds=00.132
Timer was signaled: elapsed=50000000, seconds=05.132
Timer was signaled: elapsed=50000000, seconds=10.132
Timer was signaled: elapsed=50000000, seconds=15.132
Timer was signaled: elapsed=50000000, seconds=20.132
Timer was signaled: elapsed=50000000, seconds=25.132
Timer was signaled: elapsed=50000000, seconds=30.132
Timer was signaled: elapsed=49990000, seconds=35.131
Timer was signaled: elapsed=50000000, seconds=40.131
Timer was signaled: elapsed=50000000, seconds=45.131
Timer was signaled: elapsed=50000000, seconds=50.131
Timer was signaled: elapsed=50000000, seconds=55.131
Timer was signaled: elapsed=50000000, seconds=00.131
总结:实际上我不知道如何理解这些结果。 看起来 Windows 正在尝试主动纠正计时器中的任何漂移，以便每次唤醒都在“适当”的时间发生。如果是这种情况，那么这(为您想要的间隔设置一个计时器)绝对是完成您想要的事情的最简单方法。
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