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69 lines
2.1 KiB
69 lines
2.1 KiB
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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#include <Windows.h>
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#include <stdio.h>
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// Thread creation - exercise windows APC mechanism
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extern "C" __declspec(dllexport) int ThreadRoutine()
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{
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return 0;
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}
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bool ThreadCreation()
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{
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const unsigned long num_threads = 64;
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static HANDLE aThreads[num_threads] = { 0 };
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unsigned long slot = 0;
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unsigned long thread_id = 0;
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unsigned long cnt_th = 0;
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for (cnt_th = 0; cnt_th < num_threads; cnt_th++)
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{
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aThreads[cnt_th] = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)ThreadRoutine,0,0,(LPDWORD)&thread_id);
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if (aThreads[cnt_th] == NULL)
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{
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fprintf(stderr, "CreateThread failed with GetLastError = %X \n", GetLastError());
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return false;
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}
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}
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fprintf(stderr, "created %d threads \n", num_threads);
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// Calling WaitForMultipleObjects with bWaitAll=FALSE will return for each terminated thread,
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// returning the index of the signalled object.
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// It allows the application to call CloseHandle for each terminated thread while other threads are still running.
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while (cnt_th > 0)
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{
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bool waitAll = FALSE;
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slot = WaitForMultipleObjects(cnt_th, aThreads, waitAll, INFINITE);
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if (slot >= cnt_th)
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{
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fprintf(stderr, "WaitForMultipleObjects returned %X with GetLastError = %X\n", slot, GetLastError());
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return false;
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}
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CloseHandle(aThreads[slot]);
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aThreads[slot] = aThreads[cnt_th-1];
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cnt_th--;
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}
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fprintf(stderr, "all %d threads terminated\n", num_threads);
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fflush(stderr);
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return true;
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}
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extern "C" __declspec(dllimport) void Nothing();
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int main()
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{
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Nothing();
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return ThreadCreation() ? 0 : 1;
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}
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