{"id":141,"date":"2014-07-03T06:40:17","date_gmt":"2014-07-03T06:40:17","guid":{"rendered":""},"modified":"2014-07-03T06:40:17","modified_gmt":"2014-07-03T06:40:17","slug":"","status":"publish","type":"post","link":"http:\/\/weizn.net\/?p=141","title":{"rendered":"[\u8f6c]C++\u5185\u5b58\u5206\u914d\u65b9\u5f0f"},"content":{"rendered":"

\n\t\u5185\u5b58\u7684\u5806\u5206\u914d\u548c\u6808\u5206\u914d\n<\/p>\n

\n
\n\t\t\u5806\u548c\u6808\u7684<\/span><\/a>\u533a\u522b<\/span>

\n

\n\u4e00\u4e2a\u7531C\/C++<\/strong>\u7f16\u8bd1\u7684<\/span><\/a>\u7a0b\u5e8f\u5360\u7528\u7684<\/span><\/a>\u5185\u5b58<\/strong>\u5206\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u90e8\u5206<\/span>

\n1\u3001\u6808\u533a\uff08stack\uff09\u2014 \u7531\u7f16\u8bd1\u5668\u81ea\u52a8\u5206\u914d<\/strong>\u91ca\u653e \uff0c\u5b58\u653e\u51fd\u6570\u7684<\/span><\/a>\u53c2\u6570\u503c\uff0c\u5c40\u90e8\u53d8\u91cf\u7684<\/span><\/a>\u503c\u7b49\u3002\u5176<\/span>

\n\u64cd\u4f5c\u65b9\u5f0f\u7c7b\u4f3c\u4e8e\u6570\u636e\u7ed3\u6784\u4e2d\u7684<\/span><\/a>\u6808\u3002<\/span>

\n2\u3001\u5806\u533a\uff08heap\uff09 \u2014 \u4e00\u822c\u7531\u7a0b\u5e8f\u5458\u5206\u914d<\/strong>\u91ca\u653e\uff0c \u82e5\u7a0b\u5e8f\u5458\u4e0d\u91ca\u653e\uff0c\u7a0b\u5e8f\u7ed3\u675f\u65f6\u53ef\u80fd\u7531OS\u56de<\/span>

\n\u6536 \u3002\u6ce8\u610f\u5b83\u4e0e\u6570\u636e\u7ed3\u6784\u4e2d\u7684<\/span><\/a>\u5806\u662f\u4e24\u56de\u4e8b\uff0c\u5206\u914d<\/strong>\u65b9\u5f0f\u5012\u662f\u7c7b\u4f3c\u4e8e\u94fe\u8868\uff0c\u5475\u5475\u3002<\/span>

\n3\u3001\u5168\u5c40\u533a\uff08\u9759\u6001\u533a\uff09\uff08static\uff09\u2014\uff0c\u5168\u5c40\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf\u7684<\/span><\/a>\u5b58\u50a8\u662f\u653e\u5728\u4e00\u5757\u7684<\/span><\/a>\uff0c\u521d\u59cb\u5316\u7684<\/span><\/a><\/span>

\n\u5168\u5c40\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf\u5728\u4e00\u5757\u533a\u57df\uff0c \u672a\u521d\u59cb\u5316\u7684<\/span><\/a>\u5168\u5c40\u53d8\u91cf\u548c\u672a\u521d\u59cb\u5316\u7684<\/span><\/a>\u9759\u6001\u53d8\u91cf\u5728\u76f8\u90bb\u7684<\/span><\/a>\u53e6<\/span>

\n\u4e00\u5757\u533a\u57df\u3002 – \u7a0b\u5e8f\u7ed3\u675f\u540e\u7531\u7cfb\u7edf\u91ca\u653e\u3002–>\u5206\u522b\u662fdata\u533a\uff0cbbs\u533a <\/span><\/span>

\n4\u3001\u6587\u5b57\u5e38\u91cf\u533a \u2014\u5e38\u91cf\u5b57\u7b26<\/strong>\u4e32\u5c31\u662f\u653e\u5728\u8fd9\u91cc\u7684<\/span><\/a>\u3002 \u7a0b\u5e8f\u7ed3\u675f\u540e\u7531\u7cfb\u7edf\u91ca\u653e–>coment\u533a<\/span>

\n5\u3001\u7a0b\u5e8f\u4ee3\u7801<\/strong><\/span><\/a>\u533a\u2014\u5b58\u653e\u51fd\u6570\u4f53\u7684<\/span><\/a>\u4e8c\u8fdb\u5236\u4ee3\u7801\u3002–>code\u533a<\/span>

\n

\n\u4e8c\u3001\u4f8b\u5b50\u7a0b\u5e8f<\/span>

\n\u8fd9\u662f\u4e00\u4e2a\u524d\u8f88\u5199\u7684<\/span><\/a>\uff0c\u975e\u5e38\u8be6\u7ec6<\/span>

\n\/\/main.cpp<\/span>

\nint a = 0; \u5168\u5c40\u521d\u59cb\u5316\u533a<\/span>

\nchar *p1; \u5168\u5c40\u672a\u521d\u59cb\u5316\u533a<\/span>

\nmain()<\/span>

\n{<\/span>

\nint b; \u6808<\/span>

\nchar s[] = “abc”; \u6808<\/span>

\nchar *p2; \u6808<\/span>

\nchar *p3 = “123456”; 123456\/0\u5728\u5e38\u91cf\u533a\uff0cp3\u5728\u6808\u4e0a\u3002<\/span>

\nstatic int c =0\uff1b \u5168\u5c40\uff08\u9759\u6001\uff09\u521d\u59cb\u5316\u533a<\/span>

\np1 = (char *)malloc(10);<\/span>

\np2 = (char *)malloc(20);<\/span>

\n\u5206\u914d<\/strong>\u5f97\u6765\u5f9710\u548c20\u5b57\u8282\u7684<\/span><\/a>\u533a\u57df\u5c31\u5728\u5806\u533a\u3002<\/span>

\nstrcpy(p1, “123456”); 123456\/0\u653e\u5728\u5e38\u91cf\u533a\uff0c\u7f16\u8bd1\u5668\u53ef\u80fd\u4f1a\u5c06\u5b83\u4e0ep3\u6240\u6307\u5411\u7684<\/span><\/a>“123456”\u4f18\u5316\u6210\u4e00\u4e2a\u5730\u65b9\u3002<\/span>

\n}<\/span>

\n\u4e8c\u3001\u5806\u548c\u6808\u7684<\/span><\/a>\u7406\u8bba\u77e5\u8bc6<\/span>

\n2.1\u7533\u8bf7\u65b9\u5f0f<\/span>

\nstack:<\/span>

\n\u7531\u7cfb\u7edf\u81ea\u52a8\u5206\u914d<\/strong>\u3002 \u4f8b\u5982\uff0c\u58f0\u660e\u5728\u51fd\u6570\u4e2d\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf int b; \u7cfb\u7edf\u81ea\u52a8\u5728\u6808\u4e2d\u4e3ab\u5f00\u8f9f\u7a7a\u95f4<\/span>

\nheap:<\/span>

\n\u9700\u8981\u7a0b\u5e8f\u5458\u81ea\u5df1\u7533\u8bf7\uff0c\u5e76\u6307\u660e\u5927\u5c0f\uff0c\u5728c\u4e2dmalloc\u51fd\u6570<\/span>

\n\u5982p1 = (char *)malloc(10);<\/span>

\n\u5728C++<\/strong>\u4e2d\u7528new\u8fd0\u7b97\u7b26<\/span>

\n\u5982p2 = (char *)malloc(10);<\/span>

\n\u4f46\u662f\u6ce8\u610fp1\u3001p2\u672c\u8eab\u662f\u5728\u6808\u4e2d\u7684<\/span><\/a>\u3002<\/span>

\n2.2<\/span>

\n\u7533\u8bf7\u540e\u7cfb\u7edf\u7684<\/span><\/a>\u54cd\u5e94<\/span>

\n\u6808\uff1a\u53ea\u8981\u6808\u7684<\/span><\/a>\u5269\u4f59\u7a7a\u95f4\u5927\u4e8e\u6240\u7533\u8bf7\u7a7a\u95f4\uff0c\u7cfb\u7edf\u5c06\u4e3a\u7a0b\u5e8f\u63d0\u4f9b\u5185\u5b58<\/strong>\uff0c\u5426\u5219\u5c06\u62a5\u5f02\u5e38\u63d0\u793a\u6808\u6ea2\u51fa\u3002<\/span>

\n\u5806\uff1a\u9996\u5148\u5e94\u8be5\u77e5\u9053\u64cd\u4f5c\u7cfb\u7edf\u6709\u4e00\u4e2a\u8bb0\u5f55\u7a7a\u95f2\u5185\u5b58<\/strong>\u5730\u5740\u7684<\/span><\/a>\u94fe\u8868\uff0c\u5f53\u7cfb\u7edf\u6536\u5230\u7a0b\u5e8f\u7684<\/span><\/a>\u7533\u8bf7\u65f6\uff0c\u4f1a\u904d\u5386\u8be5\u94fe\u8868\uff0c\u5bfb\u627e\u7b2c\u4e00\u4e2a\u7a7a\u95f4\u5927\u4e8e\u6240\u7533\u8bf7\u7a7a\u95f4\u7684<\/span><\/a>\u5806\u7ed3\u70b9\uff0c\u7136\u540e\u5c06\u8be5\u7ed3\u70b9\u4ece\u7a7a\u95f2\u7ed3\u70b9\u94fe\u8868\u4e2d\u5220\u9664\uff0c\u5e76\u5c06\u8be5\u7ed3\u70b9\u7684<\/span><\/a>\u7a7a\u95f4\u5206\u914d<\/strong>\u7ed9\u7a0b\u5e8f\uff0c\u53e6\u5916\uff0c\u5bf9\u4e8e\u5927\u591a\u6570\u7cfb\u7edf\uff0c\u4f1a\u5728\u8fd9\u5757\u5185\u5b58<\/strong>\u7a7a\u95f4\u4e2d\u7684<\/span><\/a>\u9996\u5730\u5740\u5904\u8bb0\u5f55\u672c\u6b21\u5206\u914d<\/strong>\u7684<\/span><\/a>\u5927\u5c0f\uff0c\u8fd9\u6837\uff0c\u4ee3\u7801\u4e2d\u7684<\/span><\/a>delete\u8bed\u53e5\u624d\u80fd\u6b63\u786e\u7684<\/span><\/a>\u91ca\u653e\u672c\u5185\u5b58<\/strong>\u7a7a\u95f4\u3002\u53e6\u5916\uff0c\u7531\u4e8e\u627e\u5230\u7684<\/span><\/a>\u5806\u7ed3\u70b9\u7684<\/span><\/a>\u5927\u5c0f\u4e0d\u4e00\u5b9a\u6b63\u597d\u7b49\u4e8e\u7533\u8bf7\u7684<\/span><\/a>\u5927\u5c0f\uff0c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u7684<\/span><\/a>\u5c06\u591a\u4f59\u7684<\/span><\/a>\u90a3\u90e8\u5206\u91cd\u65b0\u653e\u5165\u7a7a\u95f2\u94fe\u8868\u4e2d\u3002<\/span>

\n2.3\u7533\u8bf7\u5927\u5c0f\u7684<\/span><\/a>\u9650\u5236<\/span>

\n\u6808\uff1a\u5728Windows\u4e0b,\u6808\u662f\u5411\u4f4e\u5730\u5740\u6269\u5c55\u7684<\/span><\/a>\u6570\u636e\u7ed3\u6784\uff0c\u662f\u4e00\u5757\u8fde\u7eed\u7684<\/span><\/a>\u5185\u5b58<\/strong>\u7684<\/span><\/a>\u533a\u57df\u3002\u8fd9\u53e5\u8bdd\u7684<\/span><\/a>\u610f\u601d\u662f\u6808\u9876\u7684<\/span><\/a>\u5730\u5740\u548c\u6808\u7684<\/span><\/a>\u6700\u5927\u5bb9\u91cf\u662f\u7cfb\u7edf\u9884\u5148\u89c4\u5b9a\u597d\u7684<\/span><\/a>\uff0c\u5728WINDOWS\u4e0b\uff0c\u6808\u7684<\/span><\/a>\u5927\u5c0f\u662f2M\uff08\u4e5f\u6709\u7684<\/span><\/a>\u8bf4\u662f1M\uff0c\u603b\u4e4b\u662f\u4e00\u4e2a\u7f16\u8bd1\u65f6\u5c31\u786e\u5b9a\u7684<\/span><\/a>\u5e38\u6570\uff09\uff0c\u5982\u679c\u7533\u8bf7\u7684<\/span><\/a>\u7a7a\u95f4\u8d85\u8fc7\u6808\u7684<\/span><\/a>\u5269\u4f59\u7a7a\u95f4\u65f6\uff0c\u5c06\u63d0\u793aoverflow\u3002\u56e0\u6b64\uff0c\u80fd\u4ece\u6808\u83b7\u5f97\u7684<\/span><\/a>\u7a7a\u95f4\u8f83\u5c0f\u3002<\/span>

\n\u5806\uff1a\u5806\u662f\u5411\u9ad8\u5730\u5740\u6269\u5c55\u7684<\/span><\/a>\u6570\u636e\u7ed3\u6784\uff0c\u662f\u4e0d\u8fde\u7eed\u7684<\/span><\/a>\u5185\u5b58<\/strong>\u533a\u57df\u3002\u8fd9\u662f\u7531\u4e8e\u7cfb\u7edf\u662f\u7528\u94fe\u8868\u6765\u5b58\u50a8\u7684<\/span><\/a>\u7a7a\u95f2\u5185\u5b58<\/strong>\u5730\u5740\u7684<\/span><\/a>\uff0c\u81ea\u7136\u662f\u4e0d\u8fde\u7eed\u7684<\/span><\/a>\uff0c\u800c\u94fe\u8868\u7684<\/span><\/a>\u904d\u5386\u65b9\u5411\u662f\u7531\u4f4e\u5730\u5740\u5411\u9ad8\u5730\u5740\u3002\u5806\u7684<\/span><\/a>\u5927\u5c0f\u53d7\u9650\u4e8e\u8ba1\u7b97\u673a\u7cfb\u7edf\u4e2d\u6709\u6548\u7684<\/span><\/a>\u865a\u62df\u5185\u5b58<\/strong>\u3002\u7531\u6b64\u53ef\u89c1\uff0c\u5806\u83b7\u5f97\u7684<\/span><\/a>\u7a7a\u95f4\u6bd4\u8f83\u7075\u6d3b\uff0c\u4e5f\u6bd4\u8f83\u5927\u3002<\/span>

\n2.4\u7533\u8bf7\u6548\u7387\u7684<\/span><\/a>\u6bd4\u8f83\uff1a<\/span>

\n\u6808\u7531\u7cfb\u7edf\u81ea\u52a8\u5206\u914d<\/strong>\uff0c\u901f\u5ea6\u8f83\u5feb\u3002\u4f46\u7a0b\u5e8f\u5458\u662f\u65e0\u6cd5\u63a7\u5236\u7684<\/span><\/a>\u3002<\/span>

\n\u5806\u662f\u7531new\u5206\u914d<\/strong>\u7684<\/span><\/a>\u5185\u5b58<\/strong>\uff0c\u4e00\u822c\u901f\u5ea6\u6bd4\u8f83\u6162\uff0c\u800c\u4e14\u5bb9\u6613\u4ea7\u751f\u5185\u5b58<\/strong>\u788e\u7247,\u4e0d\u8fc7\u7528\u8d77\u6765\u6700\u65b9\u4fbf.<\/span>

\n\u53e6\u5916\uff0c\u5728WINDOWS\u4e0b\uff0c\u6700\u597d\u7684<\/span><\/a>\u65b9\u5f0f\u662f\u7528VirtualAlloc\u5206\u914d\u5185\u5b58<\/strong>\uff0c\u4ed6\u4e0d\u662f\u5728\u5806\uff0c\u4e5f\u4e0d\u662f\u5728\u6808\u662f\u76f4\u63a5\u5728\u8fdb\u7a0b\u7684<\/span><\/a>\u5730\u5740\u7a7a\u95f4\u4e2d\u4fdd\u7559\u4e00\u5feb\u5185\u5b58<\/strong>\uff0c\u867d\u7136\u7528\u8d77\u6765\u6700\u4e0d\u65b9\u4fbf\u3002\u4f46\u662f\u901f\u5ea6\u5feb\uff0c\u4e5f\u6700\u7075\u6d3b\u3002<\/span>

\n2.5\u5806\u548c\u6808\u4e2d\u7684<\/span><\/a>\u5b58\u50a8\u5185\u5bb9<\/span>

\n\u6808\uff1a \u5728\u51fd\u6570\u8c03\u7528\u65f6\uff0c\u7b2c\u4e00\u4e2a\u8fdb\u6808\u7684<\/span><\/a>\u662f\u4e3b\u51fd\u6570\u4e2d\u540e\u7684<\/span><\/a>\u4e0b\u4e00\u6761\u6307\u4ee4\uff08\u51fd\u6570\u8c03\u7528\u8bed\u53e5\u7684<\/span><\/a>\u4e0b\u4e00\u6761\u53ef\u6267\u884c\u8bed\u53e5\uff09\u7684<\/span><\/a>\u5730\u5740\uff0c\u7136\u540e\u662f\u51fd\u6570\u7684<\/span><\/a>\u5404\u4e2a\u53c2\u6570\uff0c\u5728\u5927\u591a\u6570\u7684<\/span><\/a>C\u7f16\u8bd1\u5668\u4e2d\uff0c\u53c2\u6570\u662f\u7531\u53f3\u5f80\u5de6\u5165\u6808\u7684<\/span><\/a>\uff0c\u7136\u540e\u662f\u51fd\u6570\u4e2d\u7684<\/span><\/a>\u5c40\u90e8\u53d8\u91cf\u3002\u6ce8\u610f\u9759\u6001\u53d8\u91cf\u662f\u4e0d\u5165\u6808\u7684<\/span><\/a>\u3002<\/span>

\n\u5f53\u672c\u6b21\u51fd\u6570\u8c03\u7528\u7ed3\u675f\u540e\uff0c\u5c40\u90e8\u53d8\u91cf\u5148\u51fa\u6808\uff0c\u7136\u540e\u662f\u53c2\u6570\uff0c\u6700\u540e\u6808\u9876\u6307\u9488<\/strong>\u6307\u5411\u6700\u5f00\u59cb\u5b58\u7684<\/span><\/a>\u5730\u5740\uff0c\u4e5f\u5c31\u662f\u4e3b\u51fd\u6570\u4e2d\u7684<\/span><\/a>\u4e0b\u4e00\u6761\u6307\u4ee4\uff0c\u7a0b\u5e8f\u7531\u8be5\u70b9\u7ee7\u7eed\u8fd0\u884c\u3002<\/span>

\n\u5806\uff1a\u4e00\u822c\u662f\u5728\u5806\u7684<\/span><\/a>\u5934\u90e8\u7528\u4e00\u4e2a\u5b57\u8282\u5b58\u653e\u5806\u7684<\/span><\/a>\u5927\u5c0f\u3002\u5806\u4e2d\u7684<\/span><\/a>\u5177\u4f53\u5185\u5bb9\u6709\u7a0b\u5e8f\u5458\u5b89\u6392\u3002<\/span>

\n2.6\u5b58\u53d6\u6548\u7387\u7684<\/span><\/a>\u6bd4\u8f83<\/span>

\nchar s1[] = “aaaaaaaaaaaaaaa”;<\/span>

\nchar *s2 = “bbbbbbbbbbbbbbbbb”;<\/span>

\naaaaaaaaaaa\u662f\u5728\u8fd0\u884c\u65f6\u523b\u8d4b\u503c\u7684<\/span><\/a>\uff1b<\/span>

\n\u800cbbbbbbbbbbb\u662f\u5728\u7f16\u8bd1\u65f6\u5c31\u786e\u5b9a\u7684<\/span><\/a>\uff1b<\/span>

\n\u4f46\u662f\uff0c\u5728\u4ee5\u540e\u7684<\/span><\/a>\u5b58\u53d6\u4e2d\uff0c\u5728\u6808\u4e0a\u7684<\/span><\/a>\u6570\u7ec4<\/strong>\u6bd4\u6307\u9488<\/strong>\u6240\u6307\u5411\u7684<\/span><\/a>\u5b57\u7b26<\/strong>\u4e32(\u4f8b\u5982\u5806)\u5feb\u3002<\/span>

\n\u6bd4\u5982\uff1a<\/span>

\n\uff03i nclude<\/span>

\nvoid main()<\/span>

\n{<\/span>

\nchar a = 1;<\/span>

\nchar c[] = “1234567890”;<\/span>

\nchar *p =”1234567890″;<\/span>

\na = c[1];<\/span>

\na = p[1];<\/span>

\nreturn;<\/span>

\n}<\/span>

\n\u5bf9\u5e94\u7684<\/span><\/a>\u6c47\u7f16\u4ee3\u7801<\/span>

\n10: a = c[1];<\/span>

\n00401067 8A 4D F1 mov cl,byte ptr [ebp-0Fh]<\/span>

\n0040106A 88 4D FC mov byte ptr [ebp-4],cl<\/span>

\n11: a = p[1];<\/span>

\n0040106D 8B 55 EC mov edx,dword ptr [ebp-14h]<\/span>

\n00401070 8A 42 01 mov al,byte ptr [edx+1]<\/span>

\n00401073 88 45 FC mov byte ptr [ebp-4],al<\/span>

\n\u7b2c\u4e00\u79cd\u5728\u8bfb\u53d6\u65f6\u76f4\u63a5\u5c31\u628a\u5b57\u7b26<\/strong>\u4e32\u4e2d\u7684<\/span><\/a>\u5143\u7d20\u8bfb\u5230\u5bc4\u5b58\u5668cl\u4e2d\uff0c\u800c\u7b2c\u4e8c\u79cd\u5219\u8981\u5148\u628a\u6307\u9488<\/strong>\u503c\u8bfb\u5230edx\u4e2d\uff0c\u5728\u6839\u636eedx\u8bfb\u53d6\u5b57\u7b26<\/strong>\uff0c\u663e\u7136\u6162\u4e86\u3002<\/span>

\n2.7\u5c0f\u7ed3\uff1a<\/span>

\n\u5806\u548c\u6808\u7684<\/span><\/a>\u533a\u522b\u53ef\u4ee5\u7528\u5982\u4e0b\u7684<\/span><\/a>\u6bd4\u55bb\u6765\u770b\u51fa\uff1a<\/span>

\n\u4f7f\u7528\u6808\u5c31\u8c61\u6211\u4eec\u53bb\u996d\u9986\u91cc\u5403\u996d\uff0c\u53ea\u7ba1\u70b9\u83dc\uff08\u53d1\u51fa\u7533\u8bf7\uff09\u3001\u4ed8\u94b1\u3001\u548c\u5403\uff08\u4f7f\u7528\uff09\uff0c\u5403\u9971\u4e86\u5c31\u8d70\uff0c\u4e0d\u5fc5\u7406\u4f1a\u5207\u83dc\u3001\u6d17\u83dc\u7b49\u51c6\u5907\u5de5\u4f5c\u548c\u6d17\u7897\u3001\u5237\u9505\u7b49\u626b\u5c3e\u5de5\u4f5c\uff0c\u4ed6\u7684<\/span><\/a>\u597d\u5904\u662f\u5feb\u6377\uff0c\u4f46\u81ea\u7531\u5ea6\u5c0f\u3002<\/span>

\n\u4f7f\u7528\u5806\u5c31\u8c61\u662f\u81ea\u5df1\u52a8\u624b\u505a\u559c\u6b22\u5403\u7684<\/span><\/a>\u83dc\u80b4\uff0c\u6bd4\u8f83\u9ebb\u70e6\uff0c\u4f46\u662f\u6bd4\u8f83\u7b26\u5408\u81ea\u5df1\u7684<\/span><\/a>\u53e3\u5473\uff0c\u800c\u4e14\u81ea\u7531\u5ea6\u5927\u3002<\/span>

\n———————————————————————————————————————-<\/span>

\n\u5168\u5c40\u53d8\u91cf\u6216\u8005\u9759\u6001\u53d8\u91cf\uff0c\u5b83\u4eec\u90fd\u653e\u5728\u5806\u91cc\u7684<\/span><\/a><\/span>

\n\u5c40\u90e8\u53d8\u91cf\u653e\u5728\u6808\u91cc\u7684<\/span><\/a><\/span>

\n\u5806\u533a,\u4e5f\u53eb\u81ea\u7531\u5b58\u50a8\u533a.<\/span>

\n\u4e3a\u4ec0\u4e48\u8bf4\u5728\u5806\u4e0a\u5206\u914d\u5185\u5b58<\/strong>\u6bd4\u5728\u6808\u4e0a\u5206\u914d\u5185\u5b58<\/strong>\u6162\uff1f\u5806\u7a7a\u95f4\u7684<\/span><\/a>\u5f00\u8f9f\u9700\u8981\u7528\u7cfb\u7edf\u51fd\u6570\uff0c\u6808\u4e0a\u76f4\u63a5\u4fee\u6539\u6307\u9488<\/strong><\/span>

\n\u5806\u7a7a\u95f4\u7684<\/span><\/a>\u7ba1\u7406<\/strong><\/span><\/a>\u9700\u8981\u7cfb\u7edf\u8bb0\u5e10\uff0c\u6808\u4e0a\u7684<\/span><\/a>\u7a7a\u95f4\u53ef\u4ee5\u7531\u7f16\u8bd1\u5668\u7ba1\u7406\u6216\u662f\u4fdd\u5b58\u5728\u67d0\u4e2a\u5904\u7406\u5668\u5bc4\u5b58\u5668\u4e2d\u3002<\/span>

\n\u5806\u7a7a\u95f4\u7684<\/span><\/a>\u91ca\u653e\u9700\u8981\u7cfb\u7edf\u7ba1\u7406\uff0c\u6808\u4e0a\u7684<\/span><\/a>\u91ca\u653e\u53ef\u4ee5\u76f4\u63a5\u4e22\u5f03\u3002\u5806\u7a7a\u95f4\u9700\u8981\u901a\u8fc7\u6808\u4e0a\u7684<\/span><\/a>\u6307\u9488<\/strong>\u95f4\u63a5\u5f15\u7528\uff0c\u6240\u4ee5\u8bbf\u95ee\u4f1a\u6162<\/span>

\n\u8bb0\u5f97\u5728apue2\u4e0a\u9762\u770b\u5230\u5173\u4e8e\u7ebf\u7a0b\u4e2d\u6709\u8fd9\u6837\u4e00\u6bb5\u8bdd,\u5927\u81f4\u610f\u601d\u662f,\u4e00\u4e2a\u7ebf\u7a0b\u6709\u81ea\u5df1\u7684<\/span><\/a>\u5806\u6808,\u53ef\u4ee5\u5728\u5806\u6808\u4e0a\u5206\u914d\u5185\u5b58<\/strong>,\u6bd4\u5982\u8bf4\u4e00\u4e2a\u7ed3\u6784\u4f53,\u5982\u679c\u8fd9\u4e2a\u7ebf\u7a0b\u8c03\u7528\u4e86pthread_exit()\u8fd4\u56de\u8fd9\u4e2a\u7ed3\u6784\u4f53\u6307\u9488<\/strong>\u7684<\/span><\/a>\u65f6\u5019\u4e4b\u540e\u8981\u7279\u522b\u7684<\/span><\/a>\u5c0f\u5fc3,\u56e0\u4e3a\u5f88\u6709\u53ef\u80fd\u8fd9\u4e2a\u7ed3\u6784\u4f53\u91cc\u9762\u7684<\/span><\/a>\u6210\u5458\u503c\u53d1\u751f\u6539\u53d8,\u8fd9\u4e2a\u53ef\u4ee5\u7406\u89e3,\u56e0\u4e3a\u540c\u4e00\u4e2a\u8fdb\u7a0b\u6240\u6709\u7ebf\u7a0b\u7684<\/span><\/a>\u8d44\u6e90\u662f\u5171\u4eab\u7684<\/span><\/a>,\u5f53\u8fd9\u4e2a\u7ebf\u7a0b\u9000\u51fa\u4e4b\u540e\u90a3\u90e8\u5206\u4ee5\u524d\u7528\u8fc7\u7684<\/span><\/a>\u5806\u6808\u5f88\u53ef\u80fd\u88ab\u5176\u5b83\u7ebf\u7a0b\u5360\u7528,\u4f46\u540c\u65f6\u53c8\u8bf4\u5982\u679cmalloc\u5c31\u4e0d\u4f1a\u51fa\u73b0\u8fd9\u6837\u7684<\/span><\/a>\u95ee\u9898,<\/span>

\n\u6bd4\u5982\uff0c\u5728\u6808\u4e0a\u5206\u4e00\u4e2aint\uff0c\u53ea\u8981esp-4\u5c31\u53ef\u4ee5\u4e86\uff0c<\/span>

\n\u5728\u5806\u4e0a\u7cfb\u7edf\u8981\u8bb0\u5f55\u88ab\u5206\u914d\u5185\u5b58<\/strong>\u7684<\/span><\/a>\u4fe1\u606f\uff0c\u4ee5\u4fbf\u91ca\u653e<\/span>

\nBTW:<\/span>

\n\u6808\u6709\u5e8f<\/span>

\n\u5806\u65e0\u5e8f<\/span>

\n\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d<\/span>

\n\u5185\u5b58\u5206\u914d<\/strong>\u65b9\u5f0f\u6709\u4e09\u79cd\uff1a   <\/span>

\n   <\/span><\/span>

\n   1.\u4ece\u9759\u6001\u5b58\u50a8\u533a\u57df\u5206\u914d<\/strong>\u3002\u5185\u5b58<\/strong>\u5728\u7a0b\u5e8f\u7f16\u8bd1\u7684<\/span><\/a>\u65f6\u5019\u5c31\u5df2\u7ecf\u5206\u914d<\/strong>\u597d\uff0c\u8fd9\u5757\u5185\u5b58<\/strong>\u5728\u7a0b\u5e8f\u7684<\/span><\/a>\u6574\u4e2a\u8fd0\u884c\u671f\u95f4\u90fd\u5b58\u5728\u3002\u4f8b\u5982\u5168\u5c40\u53d8\u91cf\uff0cstatic\u53d8\u91cf\u3002   <\/span>

\n   <\/span><\/span>

\n   2.\u5728\u6808\u4e0a\u521b\u5efa\u3002\u5728\u6267\u884c\u51fd\u6570\u65f6\uff0c\u51fd\u6570\u5185\u5c40\u90e8\u53d8\u91cf\u7684<\/span><\/a>\u5b58\u50a8\u5355\u5143<\/strong>\u90fd\u53ef\u4ee5\u5728\u6808\u4e0a\u521b\u5efa\uff0c\u51fd\u6570\u6267\u884c\u7ed3\u675f\u65f6\u8fd9\u4e9b\u5b58\u50a8\u5355\u5143<\/strong>\u81ea\u52a8\u88ab\u91ca\u653e\u3002\u6808\u5185\u5b58\u5206\u914d<\/strong>\u8fd0\u7b97\u5185\u7f6e\u4e8e\u5904\u7406\u5668\u7684<\/span><\/a>\u6307\u4ee4\u96c6\u4e2d\uff0c\u6548\u7387\u5f88\u9ad8\uff0c\u4f46\u662f\u5206\u914d<\/strong>\u7684<\/span><\/a>\u5185\u5b58<\/strong>\u5bb9\u91cf\u6709\u9650\u3002   <\/span>

\n   <\/span><\/span>

\n   3.\u4ece\u5806\u4e0a\u5206\u914d<\/strong>\uff0c\u4ea6\u79f0\u52a8\u6001\u5185\u5b58\u5206\u914d<\/strong>\u3002\u7a0b\u5e8f\u5728\u8fd0\u884c\u7684<\/span><\/a>\u65f6\u5019\u7528malloc\u6216new\u7533\u8bf7\u4efb\u610f\u591a\u5c11\u7684<\/span><\/a>\u5185\u5b58<\/strong>\uff0c\u7a0b\u5e8f\u5458\u81ea\u5df1\u8d1f\u8d23\u5728\u4f55\u65f6\u7528free\u6216delete\u91ca\u653e\u5185\u5b58<\/strong>\u3002\u52a8\u6001\u5185\u5b58<\/strong>\u7684<\/span><\/a>\u751f\u5b58\u671f\u7531\u6211\u4eec\u51b3\u5b9a\uff0c\u4f7f\u7528\u975e\u5e38\u7075\u6d3b\uff0c\u4f46\u95ee\u9898\u4e5f\u6700\u591a\u3002<\/span>

\n\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d\uff0d<\/span>

\n\u4e00\u822c\u6240\u8bf4\u7684<\/span><\/a>\u5806\u6808\uff08stack)\u5f80\u5f80\u662f\u6307\u6808\uff0c\u5148\u8fdb\u540e\u51fa\uff0c<\/span>\u5b83\u662f\u4e00\u5757\u5185\u5b58<\/strong>\u533a\u3002\u7528\u4ee5\u5b58\u653e\u7a0b\u5e8f\u7684<\/span><\/a>\u5c40\u90e8\u53d8\u91cf\uff0c\u4e34\u65f6\u53d8\u91cf\uff0c\u51fd\u6570\u7684<\/span><\/a>\u53c2\u6570\uff0c\u8fd4\u56de\u5730\u5740\u7b49\u3002\u5728\u8fd9\u5757\u533a\u57df\u4e2d\u7684<\/span><\/a>\u53d8\u91cf\u7684<\/span><\/a>\u5206\u914d<\/strong>\u548c\u91ca\u653e\u7531\u7cfb\u7edf\u81ea\u52a8\u8fdb\u884c\u3002\u4e0d\u9700\u8981\u7528\u6237\u7684<\/span><\/a>\u53c2\u4e0e\u3002   <\/span>

\n   \u800c\u5728\u5806(heap,\u5148\u8fdb\u5148\u51fa)<\/span>\u4e0a\u7684<\/span><\/a>\u7a7a\u95f4\u5219\u662f\u7531\u7528\u6237\u8fdb\u884c\u5206\u914d<\/strong>\uff0c\u5e76\u7531\u7528\u6237\u8d1f\u8d23\u91ca\u653e<\/span>\n\t<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

\n\t\u5185\u5b58\u7684\u5806\u5206\u914d\u548c\u6808\u5206\u914d\n<\/p>\n

\n
\u5806\u548c\u6808\u7684<\/span><\/a>\u533a\u522b<\/span>

\u4e00\u4e2a\u7531C\/C++<\/strong>\u7f16\u8bd1\u7684<\/span><\/a>\u7a0b\u5e8f\u5360\u7528\u7684<\/span><\/a>\u5185\u5b58<\/strong>\u5206\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u90e8\u5206<\/span>
1\u3001\u6808\u533a\uff08stack\uff09\u2014 \u7531\u7f16\u8bd1\u5668\u81ea\u52a8\u5206\u914d<\/strong>\u91ca\u653e \uff0c\u5b58\u653e\u51fd\u6570\u7684<\/span><\/a>\u53c2\u6570\u503c\uff0c\u5c40\u90e8\u53d8\u91cf\u7684<\/span><\/a>\u503c\u7b49\u3002\u5176<\/span>
\u64cd\u4f5c\u65b9\u5f0f\u7c7b\u4f3c\u4e8e\u6570\u636e\u7ed3\u6784\u4e2d\u7684<\/span><\/a>\u6808\u3002<\/span>
2\u3001\u5806\u533a\uff08heap\uff09 \u2014 \u4e00\u822c\u7531\u7a0b\u5e8f\u5458\u5206\u914d<\/strong>\u91ca\u653e\uff0c \u82e5\u7a0b\u5e8f\u5458\u4e0d\u91ca\u653e\uff0c\u7a0b\u5e8f\u7ed3\u675f\u65f6\u53ef\u80fd\u7531OS\u56de<\/span>
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