C++死锁解决心得-2

上一篇 / 下一篇 2012-08-10 10:22:23 / 个人分类：C++

　　四、打印信息

　　为了便于查找问题，我们加上线程打印信息。51Testing软件测试网 eLF4DrL*QN

　　打印线程名称、线程ID以及关键代码段进入信息。

51Testing软件测试网+^K{/id-N0h

DWORD WINAPI Thread1(LPVOID lpParameter)
{
CString strThreadID = _T("");51Testing软件测试网qt;B9HiWlZ
strThreadID.Format(_T("%d"), GetCurrentThreadId());51Testing软件测试网hr|]RPw&A

j%k5^ I\H~0 CString strPrintInfo = _T("");51Testing软件测试网e+Y@d![ j*F x

    for (int i = 0; i < 5; i++)
    {51Testing软件测试网x?8LE_&P
        EnterCriticalSection(&cs1);

        strPrintInfo = _T("");51Testing软件测试网 zv8BZ;Zt$`
        strPrintInfo += _T("Thread1 ");51Testing软件测试网8|i"]Q&G @s
        strPrintInfo += strThreadID;
/@d&X3l\0        strPrintInfo += _T(" EnterCriticalSection(&cs1)");

k4g@ {SSn0 PrintString(strPrintInfo);

nAk/_~0Tx3x/L0 Sleep(500);51Testing软件测试网3l:rm%b*u0?X
EnterCriticalSection(&cs2);

        strPrintInfo = _T("");
Cdvm5s9T3ej0        strPrintInfo += _T("Thread1 ");
'? ~;}'a(Y/q/a7c0        strPrintInfo += strThreadID;
aN1r;R'U R1~I4d0        strPrintInfo += _T(" EnterCriticalSection(&cs2)");

PrintString(strPrintInfo);

        LeaveCriticalSection(&cs2);
0|j7l:~+n*O^.|-TF3~$|0        LeaveCriticalSection(&cs1);
\2J{PH(],Al1W0    }

return 1;
"ju%WQ@n*W0}

DWORD WINAPI Thread2(LPVOID lpParameter)
x&DWY'H\qHX0{51Testing软件测试网Z M;y`ew
CString strThreadID = _T("");
r9ZD!\8N0 strThreadID.Format(_T("%d"), GetCurrentThreadId());

CString strPrintInfo = _T("");

j)sqaF|0    for (int i = 0; i < 5; i++)
[kd BPQot^O6k0    {51Testing软件测试网!@1gA-aD
        EnterCriticalSection(&cs2);

^c#o)J4L!m @ fk}0        strPrintInfo = _T("");
wbD?l\${ ~,^(]{0        strPrintInfo += _T("Thread2 ");51Testing软件测试网 `:@QA'{&p{
        strPrintInfo += strThreadID;
*Y^N+K,?0        strPrintInfo += _T(" EnterCriticalSection(&cs2)");51Testing软件测试网[D,t ztl8H

8j!|Pj"?&slj0 PrintString(strPrintInfo);51Testing软件测试网3W? S6rF-s

U2fU5wz/yG7^5}0 Sleep(500);51Testing软件测试网rNijs'a

E&kS:{z6r5m0 EnterCriticalSection(&cs1);51Testing软件测试网r gf7s_a

        strPrintInfo = _T("");51Testing软件测试网~.j:@r5fQX
        strPrintInfo += _T("Thread2 ");51Testing软件测试网Tk A b,[\/E
        strPrintInfo += strThreadID;
E!}lxC+dKK0        strPrintInfo += _T(" EnterCriticalSection(&cs1)");

.L2@9W8Tc8cC^t0 PrintString(strPrintInfo);

        LeaveCriticalSection(&cs1);
+]lXa|*j8?0        LeaveCriticalSection(&cs2);
!f/^3aA?"@5C0    }

return 1;
D~t7W S0}51Testing软件测试网[%L#G_#YR7U"T

@9H^`/j1@ Br/B5Ng0　　运行结果如下。

51Testing软件测试网qs4R?cb

　　五、死锁修改

　　线程互斥进行修改，Thread1与Thread2对关键代码段的进入与退出顺序改为相同。程序运行正常。

　　修改后线程代码。

51Testing软件测试网nJ"x+d)urr

GU+|)G$K/sz,dLh0DWORD WINAPI Thread1(LPVOID lpParameter)
]DuB Q8IZ.sE0{51Testing软件测试网 ?'u%`H ^!y Qd
    for (int i = 0; i < 5; i++)
;K DF.AU1u9go0    {
gB`+u7QD"mU0        EnterCriticalSection(&cs1);
~sO4kj0        Sleep(500);
z/w0P!Up:ry:d0        EnterCriticalSection(&cs2);

'uEZsOMc1X0 PrintString(_T("Thread1"));

)o"M9^q]C;JsT0        LeaveCriticalSection(&cs2);
F&~r&OEoYE.w0        LeaveCriticalSection(&cs1);
    }51Testing软件测试网?sO+g]

|&KstK]0 return 1;
/M p1GSk+E#ne0}51Testing软件测试网3pJI,g2j4t

DWORD WINAPI Thread2(LPVOID lpParameter)51Testing软件测试网i[ll,U1B-}O
{
#D'[{:i^k?0    for (int i = 0; i < 5; i++)
QNX!QQ!T:Mf^ ^QK0y0    {51Testing软件测试网-ML;D#GE w
        EnterCriticalSection(&cs1);
S~9]`;ai$Ks4\:S0        Sleep(500);
        EnterCriticalSection(&cs2);51Testing软件测试网)ogPT;u4}

PrintString(_T("Thread2"));

        LeaveCriticalSection(&cs2);51Testing软件测试网MI$x rEc/w
        LeaveCriticalSection(&cs1);
RjfRj:RI,B0    }

return 1;51Testing软件测试网IB:q/c7t$V!?
}

收藏举报

TAG:

查看全部评论

bob123654

不要让那些真正对你好的人，慢慢的从你的生活中消失，无论爱情还是友情，都需要用心经营。

C++死锁解决心得-2

用户菜单

我的栏目

标题搜索

日历

我的存档

数据统计

RSS订阅