InterlockedIncrement vs InterlockedIncrementAcquire / Release（Redux）

这是这个问题的后续问题 ：

我想我不理解Interlocked Acquire / Release API。 我把下面的小程序放在一起。 据我了解，g_val_1，g_val_2和g_val_3应始终以相同的顺序更新，并且最终应该以相同的值结束。 但他们没有（对于多个线程）。

我错过了什么？ 谢谢。

#include "windows.h" #include "stdio.h" #define _THREADS_ 100 #define _TICKS_ 1000 int volatile g_threads = 0; DWORD volatile g_val_1 = 0; DWORD volatile g_val_2 = 0; DWORD volatile g_val_3 = 0; BOOL g_running = TRUE; DWORD TestThread(PVOID ignore) { while (g_running) { InterlockedIncrementAcquire(&g_val_1); g_val_2++; InterlockedIncrementRelease(&g_val_3); } InterlockedDecrement(&g_threads); return(0); } int __cdecl main(int argc, char* argv[]) { int th, duration; int success; DWORD ticks; duration = _TICKS_; g_threads = _THREADS_; printf("Max=%d Threads=%d Entries=%d\n", duration, g_threads); printf("Creating Threads\n"); th = g_threads; while (th-- > 0) { CreateThread(NULL, 0, TestThread, NULL, NORMAL_PRIORITY_CLASS, NULL); } printf("Starting Threads\n"); ticks = GetTickCount(); while ((GetTickCount() - ticks)  0); ticks = GetTickCount() - ticks; success = ((g_val_1 == g_val_2) && (g_val_1 == g_val_2)); printf("Duration=%d g_val_1=%d g_val_2=%d g_val_3=%d OK=%d\n", ticks, g_val_1, g_val_2, g_val_3, success); }