// Critical Section synchronizuje dostęp do wspolnej tablicy

#include <iostream>

#include <windows.h>

#include <process.h>

#include <math.h>

using namespace std;

UINT WINAPI GEN(LPVOID);

void Disp(int, double *, char *);

double Generuj(float a, float b)

{ double w = (a + (b - a)*(double)rand()/RAND_MAX); return floor(w*100+0.5)/100; }

void ObLiCzeNia(char, int);

const int MAXDATA = 2000;

double B[2000], A[MAXDATA]; // zmienna dzielona to tablica A

typedef struct PARM {

float aa, bb;

char zn; } *pPARM;

CRITICAL_SECTION cs;

int main() // Critical

{

PARM parm1 = {-9.0, -1.1, 'A'}, parm2 = {11.11, 99.9, 'B'};

UINT ID1=0, ID2=0;

InitializeCriticalSection(&cs);

HANDLE hWA = (HANDLE)_beginthreadex(NULL, 0, GEN, &parm1, 0, &ID1);

HANDLE hWB = (HANDLE)_beginthreadex(NULL, 0, GEN, &parm2, 0, &ID2);

ObLiCzeNia('*', 40);

cout << "\nKoniec programu Critical1"; cin.get();

return 0;

}

UINT WINAPI GEN(LPVOID parametr)

{

pPARM st = (pPARM)parametr;

float oda = st->aa, dob = st->bb;

char zn=st->zn;

ObLiCzeNia(zn, 10);

EnterCriticalSection( &cs );

for (int i = 0; i < MAXDATA; i++) {

for (int k=0; k<9000; k++) pow(2.2, 3.3);

A[i] = pow(Generuj(oda, dob), 1.0);

}

Disp(22, A, " ");

LeaveCriticalSection( &cs );

double w=0;

for (int j=0; j < 2000; j++) B[j]= w +=oda;

cout << "\nKoniec Watka" << zn << ". w="<<w;

_endthreadex(0);

}

void ObLiCzeNia(char zn, int n)

{

double w;

for (int k1=0; k1 < n; k1++) {

for (long k2=0; k2<60000; k2++) w = cos(sin(pow(log(k2+1),2.2)));

cout << zn;

}

}

void Disp(int size, double *X, char *text)

{

int i;

cout << text << endl;

for (i = 0; i < size; i++) {

cout << X[i] << " ";

if ((i+1)%6 == 0) cout << endl;

}

if ((i+1)%6 != 0) cout << endl;

}

void WatekGlowny(int n1, int n2, char zn) // długotrwałe obliczenia

{

double w;

for (int k1=0; k1 < n1; k1++){

for (int k2=0; k2 < n2; k2++) w = pow(sin(k1),3.3)* pow(cos(k1),2.2);

printf("%c", zn);

} puts("");

}