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#include "stdafx.h"
#include "TestLib.h"
#include "LandauVishkin.h"
struct EventTest;
struct TestContext {
EventTest* parent;
int index;
SingleWaiterObject singleWaiterObject;
void init(EventTest* parent, int i);
};
struct EventTest {
EventObject event;
TestContext* contexts;
bool bind;
volatile int started;
volatile int proceeded;
void testManyWaiters(int threads, bool bind);
void testSingleWaiters(int threads, bool bind);
};
void TestContext::init(EventTest* i_parent, int i) {
this->parent = i_parent;
index = i;
CreateSingleWaiterObject(&singleWaiterObject);
}
void waitEqual(int value, volatile int* variable, const char* message)
{
for (int i = 0; i < 1000; i++) {
if (*variable == value) {
return;
}
SleepForMillis(5);
}
ASSERT_EQ_M(value, *variable, message);
}
void testManyWaitersMain(void* c)
{
TestContext* context = (TestContext*) c;
if (context->parent->bind) {
BindThreadToProcessor(context->index%GetNumberOfProcessors());
}
//printf("start thread %d%s\n", context->index, context->parent->bind ? " bind" : "");
InterlockedIncrementAndReturnNewValue(&context->parent->started);
WaitForEvent(&context->parent->event);
//printf("proceed thread %d\n", context->index);
InterlockedIncrementAndReturnNewValue(&context->parent->proceeded);
}
void EventTest::testManyWaiters(int threads, bool i_bind)
{
//printf("testing many %d threads%s\n", threads, i_bind ? " (bind)" : "");
contexts = new TestContext[threads];
CreateEventObject(&event);
PreventEventWaitersFromProceeding(&event);
started = proceeded = 0;
bind = i_bind;
for (int i = 0; i < threads; i++) {
contexts[i].init(this, i);
StartNewThread(testManyWaitersMain, &contexts[i]);
}
char buf[100];
sprintf(buf, "many started %d%s\n", threads, i_bind ? " bind" : "");
waitEqual(threads, &started, buf);
AllowEventWaitersToProceed(&event);
sprintf(buf, "many proceeded %d%s\n", threads, i_bind ? " bind" : "");
waitEqual(threads, &proceeded, buf);
DestroyEventObject(&event);
}
TEST_F(EventTest, "many waiters") {
for (int i = 0; i < 100; i++) {
for (int threads = 1; threads <= 64; threads *= 2) {
for (int bind = 0; bind < (threads <= 16 ? 2 : 1); bind++) {
testManyWaiters(threads, bind);
}
}
}
}
void testSingleWaitersMain(void* c)
{
TestContext* context = (TestContext*) c;
if (context->parent->bind) {
BindThreadToProcessor(context->index%GetNumberOfProcessors());
}
//printf("start thread %d%s\n", context->index, context->parent->bind ? " bind" : "");
InterlockedIncrementAndReturnNewValue(&context->parent->started);
WaitForSingleWaiterObject(&context->singleWaiterObject);
//printf("proceed thread %d\n", context->index);
InterlockedIncrementAndReturnNewValue(&context->parent->proceeded);
ResetSingleWaiterObject(&context->singleWaiterObject);
}
void EventTest::testSingleWaiters(int threads, bool i_bind)
{
//printf("testing single %d threads%s\n", threads, i_bind ? " (bind)" : "");
contexts = new TestContext[threads];
started = proceeded = 0;
bind = i_bind;
for (int i = 0; i < threads; i++) {
contexts[i].init(this, i);
StartNewThread(testSingleWaitersMain, &contexts[i]);
}
//SleepForMillis(50);
char buf[100];
sprintf(buf, "single started %d%s\n", threads, i_bind ? " bind" : "");
waitEqual(threads, &started, buf);
for (int i = 0; i < threads; i++) {
SignalSingleWaiterObject(&contexts[i].singleWaiterObject);
sprintf(buf, "single proceeded %d of %d%s\n", i, threads, i_bind ? " bind" : "");
waitEqual(i + 1, &proceeded, buf);
//SleepForMillis(10); // allow more threads to release
sprintf(buf, "single after proceeded %d of %d%s\n", i, threads, i_bind ? " bind" : "");
ASSERT_EQ_M(i + 1, proceeded, buf);
}
for (int i = 0; i < threads; i++) {
DestroySingleWaiterObject(&contexts[i].singleWaiterObject);
}
}
TEST_F(EventTest, "single waiters") {
for (int i = 0; i < 50; i++) {
for (int threads = 1; threads <= 64; threads *= 2) {
for (int bind = 0; bind < (threads <= 16 ? 2 : 1); bind++) {
testSingleWaiters(threads, bind);
}
}
}
}
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