1// Licensed to the .NET Foundation under one or more agreements.
2// The .NET Foundation licenses this file to you under the MIT license.
3// See the LICENSE file in the project root for more information.
4
5/*============================================================
6**
7** Source : test.c
8**
9** Purpose: InterlockedIncrement() function
10**
11** The test case spawns MAX_THREADS Threads, and each thread call InterlockedDecrement Function to decrement a
12** global counter REPEAT_COUNT Times. The Test case sets the global counter to Zero at the begining of the test.
13** The test cases passes if at the end the test the value of the global counter is MAX_THREADS * REPEAT_COUNT.
14**
15**
16**=========================================================*/
17
18#include <palsuite.h>
19#define MAX_THREADS 64
20#define REPEAT_COUNT 10000
21
22LONG GlobalCounter = 0;
23
24void IncrementCounter(void);
25
26
27
28int __cdecl main(int argc, char *argv[])
29{
30
31 LONG TotalOperations=0;
32 int i=0;
33 DWORD dwThreadID = 0;
34 HANDLE hThread[MAX_THREADS];
35 TotalOperations = MAX_THREADS * REPEAT_COUNT;
36 GlobalCounter = 0;
37
38 /*
39 * Initialize the PAL and return FAILURE if this fails
40 */
41 if(0 != (PAL_Initialize(argc, argv)))
42 {
43 return FAIL;
44 }
45
46 //Create MAX_THREADS threads that will operate on the global counter
47 for (i=0;i<MAX_THREADS;i++)
48 {
49 hThread[i] = CreateThread(
50 NULL, // default security attributes
51 0, // use default stack size
52 (LPTHREAD_START_ROUTINE) IncrementCounter, // thread function
53 NULL, // argument to thread function
54 0, // use default creation flags
55 &dwThreadID); // returns the thread identifier
56
57 // Check the return value for success.
58
59 if (hThread[i] == NULL)
60 {
61 Fail("ERROR: Was not able to create thread\n"
62 "GetLastError returned %d\n", GetLastError());
63 }
64 }
65
66 //Wait for all threads to finish
67 for (i=0;i<MAX_THREADS;i++)
68 {
69 if (WAIT_OBJECT_0 != WaitForSingleObject (hThread[i], INFINITE))
70 {
71 Fail ("Main: Wait for Single Object failed. Failing test.\n"
72 "GetLastError returned %d\n", GetLastError());
73 }
74 }
75
76 /* Compare the value of global counter with zero.
77 */
78
79 if (TotalOperations!=GlobalCounter)
80 {
81 Fail("Test Case Failed: InterlockedDecrement \n");
82 }
83
84 PAL_Terminate();
85 return PASS;
86}
87
88void IncrementCounter(void)
89{
90 int i=0;
91 for (i=0; i<REPEAT_COUNT;i++)
92 {
93 InterlockedIncrement(&GlobalCounter);
94 }
95}
96