跪求多线程简单c程序

hechuang1111 2011-08-13 09:46:20
用4个线程，其中2个生成100个随机数，另2个求这些随机数的和。
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jackyjkchen 2011-08-28
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吐槽一下楼主，你的这种简单需求用多线程反而会更慢……一个循环来做，用CryptoAPI产生随机数，恐怕根本快到测不出时间……
Tsy040501 2011-08-28
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#include <windows.h>
#include <process.h>
#include <math.h>

#define WM_CLIENT_COUNT (WM_USER + 1)
#define WM_CLIENT_PLAINT (WM_USER + 2)
#define NUM 100

typedef struct
{
HWND hwnd ;
//HANDLE hEvent ;
int inum[NUM] ;
}
PARAMS, *PPARAMS ;

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM) ;
LRESULT CALLBACK ChildProc1(HWND, UINT, WPARAM, LPARAM) ;
LRESULT CALLBACK ChildProc2(HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR
lpCmdLine,int nShowCmd)
{
WNDCLASS wndclass ;
HWND hwnd ;
MSG msg ;
TCHAR szAppName[] = TEXT("FThread") ;

wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH) ;
wndclass.hCursor = LoadCursor(NULL, IDI_APPLICATION) ;
wndclass.hIcon = LoadIcon(NULL, IDC_ARROW) ;
wndclass.hInstance = hInstance ;
wndclass.lpfnWndProc = WndProc ;
wndclass.lpszClassName = szAppName ;
wndclass.lpszMenuName = NULL ;
wndclass.style = CS_VREDRAW | CS_HREDRAW ;

RegisterClass(&wndclass) ;

hwnd = CreateWindow(szAppName, TEXT("FourThred-Result"), WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL) ;

ShowWindow(hwnd, nShowCmd) ;
UpdateWindow(hwnd) ;

while(GetMessage(&msg, NULL, NULL, NULL))
{
TranslateMessage(&msg) ;
DispatchMessage(&msg) ;
}

return msg.wParam ;
}

//Sum
VOID Thread3(PVOID pvoid)
{
int i, sum ;
volatile PPARAMS pparams ;

pparams = (PPARAMS) pvoid ;

sum = pparams->inum[0] ;
for(i = 1;i < NUM; i ++)
{ sum += pparams->inum[i] ; }
SendMessage(pparams->hwnd, WM_CLIENT_PLAINT, (WPARAM) sum, 0) ;

_endthread() ;
}

VOID Thread4(PVOID pvoid)
{
int i, sum ;
volatile PPARAMS pparams ;

pparams = (PPARAMS) pvoid ;

sum = pparams->inum[0] ;
for(i = 1;i < NUM; i ++)
{ sum += pparams->inum[i] ; }
SendMessage(pparams->hwnd, WM_CLIENT_PLAINT, (WPARAM) sum, 0) ;

_endthread() ;
}

//Fist ChildProc
VOID Thread1(PVOID pvoid)
{
int i ;
volatile PPARAMS pparams ;

pparams = (PPARAMS) pvoid ;

for(i = 0 ;i < NUM; i++)
{ pparams->inum[i] = rand() % 1000 ; }
SendMessage(pparams->hwnd, WM_CLIENT_COUNT, 0, 0) ;

_endthread() ;
}
LRESULT CALLBACK ChildProc1(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static PARAMS params ;
static int cxClient, cyClient ;
TCHAR szBuffer[10] ;
HDC hdc ;

switch(message)
{
case WM_CREATE :
params.hwnd = hwnd ;

_beginthread(Thread1, 0, ¶ms) ;
return 0 ;

case WM_SIZE :
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
return 0 ;

case WM_CLIENT_COUNT :
_beginthread(Thread3, 0, ¶ms) ;
return 0 ;

case WM_CLIENT_PLAINT :
hdc = GetDC(hwnd) ;
TextOut(hdc, cxClient / 2, cyClient / 2, szBuffer,
wsprintf(szBuffer, TEXT("%d"), (int) wParam)) ;
ReleaseDC(hwnd, hdc) ;
return 0 ;
}
return DefWindowProc(hwnd, message, wParam, lParam) ;
}

//Second Thread
/**/VOID Thread2(PVOID pvoid)
{
int i ;
volatile PPARAMS pparams ;

pparams = (PPARAMS) pvoid ;

for(i = 0 ;i < NUM; i++)
{ pparams->inum[i] = rand() % 1051 ; }
SendMessage(pparams->hwnd, WM_CLIENT_COUNT, 0, 0) ;

_endthread() ;
}
LRESULT CALLBACK ChildProc2(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static PARAMS params ;
static int cxClient, cyClient ;
HDC hdc ;
TCHAR szBuffer[10] ;

switch(message)
{
case WM_CREATE :
params.hwnd = hwnd ;

_beginthread(Thread2, 0, ¶ms) ;
return 0 ;
case WM_SIZE :
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
return 0 ;

case WM_CLIENT_COUNT :
_beginthread(Thread4, 0, ¶ms) ;
return 0 ;

case WM_CLIENT_PLAINT :
hdc = GetDC(hwnd) ;
TextOut(hdc, cxClient / 2, cyClient / 2, szBuffer,
wsprintf(szBuffer, TEXT("%d"), (int) wParam)) ;
ReleaseDC(hwnd, hdc) ;
return 0 ;
}
return DefWindowProc(hwnd, message, wParam, lParam) ;
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static HWND hwndChild[2] ;
static TCHAR * szChildName[] = {TEXT("Child1"),
TEXT("Child2")} ;
static WNDPROC ChildProc[] = {ChildProc1, ChildProc2} ;
WNDCLASS wndclass ;
HINSTANCE hInstance ;
int i, cxClient, cyClient ;

switch(message)
{
case WM_CREATE :
hInstance = (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE) ;

wndclass.cbClsExtra = NULL ;
wndclass.cbWndExtra = NULL ;
wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH) ;
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW) ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = NULL ;
wndclass.lpszMenuName = NULL ;
wndclass.style = CS_HREDRAW | CS_VREDRAW ;

for(i = 0 ;i < 2 ;i ++)
{
wndclass.lpfnWndProc = ChildProc[i] ;
wndclass.lpszClassName = szChildName[i] ;

RegisterClass(&wndclass) ;

hwndChild[i] = CreateWindow(szChildName[i], NULL,
WS_CHILDWINDOW | WS_BORDER | WS_VISIBLE,
0, 0, 0, 0,
hwnd, (HMENU) i, hInstance, NULL) ;
}
return 0 ;

case WM_SIZE :
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;

MoveWindow(hwndChild[0], 0, 0, cxClient / 2, cyClient, FALSE) ;
MoveWindow(hwndChild[1], cxClient / 2, 0, cxClient / 2, cyClient, FALSE) ;
return 0 ;

case WM_DESTROY :
PostQuitMessage(0) ;
return 0 ;
}
return DefWindowProc(hwnd, message, wParam, lParam) ;
}
Tsy040501 2011-08-28
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#include <windows.h>

#include <process.h>

#include <math.h>



#define WM_CLIENT_COUNT    (WM_USER + 1)

#define WM_CLIENT_PLAINT   (WM_USER + 2)

#define NUM					100



typedef struct

{

	HWND hwnd ;

	//HANDLE hEvent ;

	int inum[NUM] ;

}

PARAMS, *PPARAMS ;



LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM) ;

LRESULT CALLBACK ChildProc1(HWND, UINT, WPARAM, LPARAM) ;

LRESULT CALLBACK ChildProc2(HWND, UINT, WPARAM, LPARAM) ;



int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR

			lpCmdLine,int nShowCmd)

{

	WNDCLASS  wndclass ;

	HWND	  hwnd ;

	MSG		  msg ;

	TCHAR	  szAppName[] = TEXT("FThread") ;

	

	wndclass.cbClsExtra		= 0 ;

	wndclass.cbWndExtra		= 0 ;

	wndclass.hbrBackground	= (HBRUSH) GetStockObject(WHITE_BRUSH) ;

	wndclass.hCursor		= LoadCursor(NULL, IDI_APPLICATION) ;

	wndclass.hIcon			= LoadIcon(NULL, IDC_ARROW) ;

	wndclass.hInstance		= hInstance ;

	wndclass.lpfnWndProc	= WndProc ;

	wndclass.lpszClassName	= szAppName ;

	wndclass.lpszMenuName	= NULL ;

	wndclass.style			= CS_VREDRAW | CS_HREDRAW ;

	

	RegisterClass(&wndclass) ;



	hwnd = CreateWindow(szAppName, TEXT("FourThred-Result"), WS_OVERLAPPEDWINDOW, 

						CW_USEDEFAULT, CW_USEDEFAULT,

						CW_USEDEFAULT, CW_USEDEFAULT,

						NULL, NULL, hInstance, NULL) ;



	ShowWindow(hwnd, nShowCmd) ;

	UpdateWindow(hwnd) ;



	while(GetMessage(&msg, NULL, NULL, NULL))

	{

		TranslateMessage(&msg) ;

		DispatchMessage(&msg) ;

	}



	return msg.wParam ;

}



//Sum

VOID Thread3(PVOID pvoid) 

{

	int i, sum ;

	volatile PPARAMS pparams ;



	pparams = (PPARAMS) pvoid ;



	sum = pparams->inum[0] ;

	for(i = 1;i < NUM; i ++)

	{		sum += pparams->inum[i] ;	}

	SendMessage(pparams->hwnd, WM_CLIENT_PLAINT, (WPARAM) sum, 0) ;



	_endthread() ;

}



VOID Thread4(PVOID pvoid) 

{

	int i, sum ;

	volatile PPARAMS pparams ;



	pparams = (PPARAMS) pvoid ;



	sum = pparams->inum[0] ;

	for(i = 1;i < NUM; i ++)

	{		sum += pparams->inum[i] ;	}

	SendMessage(pparams->hwnd, WM_CLIENT_PLAINT, (WPARAM) sum, 0) ;



	_endthread() ;

}



//Fist ChildProc

VOID Thread1(PVOID pvoid) 

{

	int i ;

	volatile PPARAMS pparams ;



	pparams = (PPARAMS) pvoid ;



	for(i = 0 ;i < NUM; i++)

	{		pparams->inum[i] = rand() % 1000 ;	}

	SendMessage(pparams->hwnd, WM_CLIENT_COUNT, 0, 0) ;



	_endthread() ;

}

LRESULT CALLBACK ChildProc1(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

	static PARAMS params ;

	static int    cxClient, cyClient ;

	TCHAR		  szBuffer[10] ;

	HDC			  hdc ;



	switch(message)

	{

	case WM_CREATE :

		params.hwnd = hwnd ;



		_beginthread(Thread1, 0, ¶ms) ;

		return 0 ;



	case WM_SIZE :

		cxClient = LOWORD (lParam) ;

		cyClient = HIWORD (lParam) ;

		return 0 ;



	case WM_CLIENT_COUNT :

		_beginthread(Thread3, 0, ¶ms) ;

		return 0 ;



	case WM_CLIENT_PLAINT :

		hdc = GetDC(hwnd) ;

		TextOut(hdc, cxClient / 2, cyClient / 2, szBuffer,

				wsprintf(szBuffer, TEXT("%d"), (int) wParam)) ;

		ReleaseDC(hwnd, hdc) ;

		return 0 ;

	}

	return DefWindowProc(hwnd, message, wParam, lParam) ;

}



//Second Thread 

/**/VOID Thread2(PVOID pvoid) 

{

	int i ;

	volatile PPARAMS pparams ;



	pparams = (PPARAMS) pvoid ;



	for(i = 0 ;i < NUM; i++)

	{		pparams->inum[i] = rand() % 1051 ;	}

	SendMessage(pparams->hwnd, WM_CLIENT_COUNT, 0, 0) ;



	_endthread() ;

}

LRESULT CALLBACK ChildProc2(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

	static PARAMS params ;

	static int    cxClient, cyClient ;

	HDC    hdc ;

	TCHAR  szBuffer[10] ;



	switch(message)

	{

	case WM_CREATE :

		params.hwnd = hwnd ;



		_beginthread(Thread2, 0, ¶ms) ;

		return 0 ;

	case WM_SIZE :

		cxClient = LOWORD (lParam) ;

		cyClient = HIWORD (lParam) ;

		return 0 ;



	case WM_CLIENT_COUNT :

		_beginthread(Thread4, 0, ¶ms) ;

		return 0 ;



	case WM_CLIENT_PLAINT :

		hdc = GetDC(hwnd) ;

		TextOut(hdc, cxClient / 2, cyClient / 2, szBuffer,

				wsprintf(szBuffer, TEXT("%d"), (int) wParam)) ;

		ReleaseDC(hwnd, hdc) ;

		return 0 ;

	}

	return DefWindowProc(hwnd, message, wParam, lParam) ;

}



LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

	static HWND			hwndChild[2] ;

	static TCHAR * 		szChildName[] = {TEXT("Child1"),

										TEXT("Child2")} ;

	static WNDPROC		ChildProc[] = {ChildProc1, ChildProc2} ;

	WNDCLASS			wndclass ;

	HINSTANCE			hInstance ;

	int					i, cxClient, cyClient ;



	switch(message)

	{

	case WM_CREATE :

		hInstance = (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE) ;



		wndclass.cbClsExtra			= NULL ;

		wndclass.cbWndExtra			= NULL ;

		wndclass.hbrBackground		= (HBRUSH) GetStockObject(WHITE_BRUSH) ;

		wndclass.hCursor			= LoadCursor(NULL, IDC_ARROW) ;

		wndclass.hInstance			= hInstance ;

		wndclass.hIcon				= NULL ;

		wndclass.lpszMenuName		= NULL ;

		wndclass.style				= CS_HREDRAW | CS_VREDRAW ;



		for(i = 0 ;i < 2 ;i ++) 

		{

			wndclass.lpfnWndProc		= ChildProc[i] ;

			wndclass.lpszClassName		= szChildName[i] ;



			RegisterClass(&wndclass) ;



			hwndChild[i] = CreateWindow(szChildName[i], NULL, 

									WS_CHILDWINDOW | WS_BORDER | WS_VISIBLE,

									0, 0, 0, 0,

									hwnd, (HMENU) i, hInstance, NULL) ;

		}

		return 0 ;



	case WM_SIZE :

		cxClient = LOWORD (lParam) ;

		cyClient = HIWORD (lParam) ;



		MoveWindow(hwndChild[0], 0, 0, cxClient / 2, cyClient, FALSE) ;

		MoveWindow(hwndChild[1], cxClient / 2, 0, cxClient / 2, cyClient, FALSE) ;

		return 0 ;



	case WM_DESTROY :

		PostQuitMessage(0) ;

		return 0 ;

	}

	return DefWindowProc(hwnd, message, wParam, lParam) ;

}
不知道这样会不会好看一点！各位大牛，多多指教~
mql0127 2011-08-23
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拿分的
hechuang1111 2011-08-13
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是用vc6.0写
帅得不敢出门 2011-08-13
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你的啥系统, 不同系统线程 api是不一样的.
linux
pthread_create

随机数用srand rand
jy03187487 2011-08-13
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.............
braveyly 2011-08-13
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还有很重要点：生成了随机数后，要通知另外个线程进行计算。

windows下推荐同步方式为：event + waitforsingleobject
linux下推荐：condition variable 和 mutex
5t4rk 2011-08-13
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不会 表示关注 来学习

顶
jernymy 2011-08-13
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[Quote=引用 1 楼 zmlovelx 的回复:]
你的啥系统, 不同系统线程 api是不一样的.
linux
pthread_create

随机数用srand rand
[/Quote]
windows用CreateThread
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