test4.cpp

#include <cstdio>
#include <cstdlib>
#include <cstdint>
#include <pthread.h>
#include "common.h"
#include "test_op.h"

using namespace std;

struct TChild {
	uint32_t m_Pages;
	uint32_t m_Share;
	pthread_barrier_t* m_Barrier;
};

static void childProcess(CCPU* cpu, TChild* arg)
{
	checkResize(cpu, arg->m_Pages);

	rwTest(cpu, arg->m_Share, arg->m_Pages);

	pthread_barrier_wait(arg->m_Barrier);

	rTest(cpu, 0, arg->m_Share);
	rTest(cpu, arg->m_Share, arg->m_Pages);
}

static void initProcess(CCPU* cpu, void* arg)
{
	const int PROCESSES = 10;
	const int BASE_SIZE = 200;
	static TChild childData[PROCESSES];
	pthread_barrier_t bar;

	checkResize(cpu, BASE_SIZE);
	rwiTest(cpu, 0, BASE_SIZE);
	pthread_barrier_init(&bar, NULL, PROCESSES + 1);

	for(int i = 0; i < PROCESSES; i++) {
		childData[i].m_Pages = BASE_SIZE + (i - PROCESSES / 2) * 20;
		childData[i].m_Share = BASE_SIZE / 2;
		childData[i].m_Barrier = &bar;
		cpu->NewProcess(&childData[i], (void (*)(CCPU*, void*)) childProcess, true);
	}
	pthread_barrier_wait(&bar);
	rTest(cpu, 0, BASE_SIZE);
	pthread_barrier_destroy(&bar);
}

int main(void)
{
	const int PAGES = 3072;

	// 32MiB + extra 4KiB for alignment
	uint8_t* mem = new uint8_t[PAGES * CCPU::PAGE_SIZE + CCPU::PAGE_SIZE];

	// align to a mutiple of 4KiB
	uint8_t* memAligned = (uint8_t*) ((((uintptr_t) mem) + CCPU::PAGE_SIZE - 1) & ~(uintptr_t) ~CCPU::ADDR_MASK);

	testStart();
	MemMgr(memAligned, PAGES, NULL, initProcess);
	testEnd("test #5");

	delete[] mem;
	return 0;
}