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kernel32/tests: Add a SRWLock test to simulate a typical use case.

This commit is contained in:
Sebastian Lackner 2014-01-11 02:23:12 +01:00 committed by Alexandre Julliard
parent d7ff42a091
commit 0c77f89f61
1 changed files with 85 additions and 0 deletions
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85
dlls/kernel32/tests/sync.c
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@ -1919,6 +1919,90 @@ static void test_srwlock_base(void)
}
}
static SRWLOCK srwlock_example;
static LONG srwlock_protected_value = 0;
static LONG srwlock_example_errors = 0, srwlock_inside = 0, srwlock_cnt = 0;
static BOOL srwlock_stop = FALSE;
static DWORD WINAPI srwlock_example_thread(LPVOID x) {
DWORD *cnt = x;
LONG old;
while (!srwlock_stop)
{
/* periodically request exclusive access */
if (InterlockedIncrement(&srwlock_cnt) % 13 == 0)
{
pAcquireSRWLockExclusive(&srwlock_example);
if (InterlockedIncrement(&srwlock_inside) != 1)
InterlockedIncrement(&srwlock_example_errors);
InterlockedIncrement(&srwlock_protected_value);
Sleep(1);
if (InterlockedDecrement(&srwlock_inside) != 0)
InterlockedIncrement(&srwlock_example_errors);
pReleaseSRWLockExclusive(&srwlock_example);
}
/* request shared access */
pAcquireSRWLockShared(&srwlock_example);
InterlockedIncrement(&srwlock_inside);
old = srwlock_protected_value;
(*cnt)++;
Sleep(1);
if (old != srwlock_protected_value)
InterlockedIncrement(&srwlock_example_errors);
InterlockedDecrement(&srwlock_inside);
pReleaseSRWLockShared(&srwlock_example);
}
return 0;
}
static void test_srwlock_example(void)
{
HANDLE h1, h2, h3;
DWORD dummy;
DWORD cnt1, cnt2, cnt3;
if (!pInitializeSRWLock) {
/* function is not yet in XP, only in newer Windows */
win_skip("no srw lock support.\n");
return;
}
pInitializeSRWLock(&srwlock_example);
cnt1 = cnt2 = cnt3 = 0;
h1 = CreateThread(NULL, 0, srwlock_example_thread, &cnt1, 0, &dummy);
h2 = CreateThread(NULL, 0, srwlock_example_thread, &cnt2, 0, &dummy);
h3 = CreateThread(NULL, 0, srwlock_example_thread, &cnt3, 0, &dummy);
/* limit run to 1 second. */
Sleep(1000);
/* tear down start */
srwlock_stop = TRUE;
WaitForSingleObject(h1, 1000);
WaitForSingleObject(h2, 1000);
WaitForSingleObject(h3, 1000);
ok(!srwlock_inside, "threads didn't terminate properly, srwlock_inside is %d.\n", srwlock_inside);
todo_wine
ok(!srwlock_example_errors, "errors occured while running SRWLock example test (number of errors: %d)\n",
srwlock_example_errors);
trace("number of shared accesses per thread are c1 %d, c2 %d, c3 %d\n", cnt1, cnt2, cnt3);
trace("number of total exclusive accesses is %d\n", srwlock_protected_value);
}
START_TEST(sync)
{
HMODULE hdll = GetModuleHandleA("kernel32.dll");
@ -1959,4 +2043,5 @@ START_TEST(sync)
test_condvars_base();
test_condvars_consumer_producer();
test_srwlock_base();
test_srwlock_example();
}