{"id":1061,"date":"2026-05-21T13:50:14","date_gmt":"2026-05-21T05:50:14","guid":{"rendered":"http:\/\/lycoreco.cn\/?p=1061"},"modified":"2026-05-21T13:50:17","modified_gmt":"2026-05-21T05:50:17","slug":"%e5%a0%86%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5","status":"publish","type":"post","link":"http:\/\/lycoreco.cn\/index.php\/2026\/05\/21\/%e5%a0%86%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5\/","title":{"rendered":"\u5806\u57fa\u672c\u6982\u5ff5"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\u524d\u8a00<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u770b\u96ea\u7684\u7b14\u8bb0\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u5e2e\u52a9\uff0c\u6211\u4e5f\u5b66\u5230\u4e86\u4e0d\u5c11\u4e1c\u897f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ptmalloc2\u662f\u76ee\u524dlinux\u6807\u51c6\u53d1\u884c\u7248\u4e2d\u4f7f\u7528\u7684\u5806\u5206\u914d\u5668<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u5185\u5b58\u5206\u914d\u601d\u60f3<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5806\u7ba1\u7406\u5668\u8d1f\u8d23\u5411\u64cd\u4f5c\u7cfb\u7edf\u7533\u8bf7\u5185\u5b58\uff0c\u7136\u540e\u5c06\u5176\u8fd4\u56de\u7ed9\u7528\u6237\u7a0b\u5e8f\uff0c\u4f46\u662f\u9891\u7e41\u7684\u7cfb\u7edf\u8c03\u7528\u4f1a<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u9020\u6210\u5927\u91cf\u7684\u5f00\u9500\u3002\u4e3a\u4e86\u4fdd\u6301\u5185\u5b58\u7ba1\u7406\u7684\u9ad8\u6548\u6027\uff0c\u5185\u6838\u4e00\u822c\u90fd\u4f1a\u9884\u5148\u5206\u914d\u5f88\u5927\u7684\u4e00\u5757\u8fde\u7eed<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7684\u5185\u5b58\uff0c\u7136\u540e\u8ba9\u5806\u7ba1\u7406\u5668\u901a\u8fc7\u67d0\u79cd\u7b97\u6cd5\u7ba1\u7406\u8fd9\u5757\u5185\u5b58\u3002\u53ea\u6709\u5f53\u51fa\u73b0\u4e86\u5806\u7a7a\u95f4\u4e0d\u8db3\u7684\u60c5<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u51b5\uff0c\u5806\u7ba1\u7406\u5668\u624d\u4f1a\u518d\u6b21\u4e0e\u64cd\u4f5c\u7cfb\u7edf\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u822c\u6765\u8bf4\uff0c\u7528\u6237\u91ca\u653e\u7684\u5185\u5b58\u5e76\u4e0d\u662f\u76f4\u63a5\u8fd4\u8fd8\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u7684\uff0c\u800c\u662f\u7531\u5806\u7ba1\u7406\u5668\u8fdb\u884c\u7ba1\u7406\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e9b\u91ca\u653e\u7684\u5185\u5b58\u53ef\u4ee5\u6765\u54cd\u5e94\u7528\u6237\u65b0\u7533\u8bf7\u7684\u5185\u5b58\u7684\u8bf7\u6c42\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u5806\u57fa\u672c\u64cd\u4f5c<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">malloc<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">malloc\uff08memoryallocation\uff09\u51fd\u6570\u662fc\u8bed\u8a00\u6807\u51c6\u5e93\u4e2d\u7528\u4e8e\u52a8\u6001\u5185\u5b58\u5206\u914d\u7684\u4e00\u4e2a\u57fa\u672c\u51fd\u6570\u3002\u5b83\u5206\u914d\u4e00\u5757\u81f3\u5c11\u4e3asize\u5b57\u8282\u7684\u8fde\u7eed\u5185\u5b58\u533a\u57df\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u6307\u5411\u8fd9\u5757\u5185\u5b58\u7684\u6307\u9488<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void *malloc(size_t size);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">malloc\u51fd\u6570\u8fd4\u56de\u5bf9\u5e94\u5927\u5c0f\u5b57\u8282\u7684\u5185\u5b58\u5757\u7684\u6307\u9488\u3002\u6b64\u5916\uff0c\u8be5\u51fd\u6570\u8fd8\u5bf9\u4e00\u4e9b\u5f02\u5e38\u60c5\u51b5\u8fdb\u884c\u4e86\u5904\u7406\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53n=0\u65f6\uff0c\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u5141\u8bb8\u7684\u5806\u7684\u6700\u5c0f\u5185\u5b58\u5757<\/li>\n\n\n\n<li>\u5f53\u4e3a\u8d1f\u6570\u65f6\uff0c\u7531\u4e8e\u5728\u5927\u591a\u6570\u7cfb\u7edf\u4e0a\uff0csize_t\u662f\u65e0\u7b26\u53f7\u6570\uff08\u8fd9\u4e00\u70b9\u975e\u5e38\u91cd\u8981\uff09\uff0c\u6240\u4ee5\u7a0b\u5e8f\u5c31\u4f1a\u7533\u8bf7\u5f88\u5927\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u4f46\u901a\u5e38\u6765\u8bf4\u90fd\u4f1a\u5931\u8d25\uff0c\u56e0\u4e3a\u7cfb\u7edf\u6ca1\u6709\u90a3\u4e48\u591a\u7684\u5185\u5b58\u53ef\u4ee5\u5206\u914d\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">realloc<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">realloc\u51fd\u6570\u7528\u4e8e\u91cd\u65b0\u5206\u914d\u4e4b\u524d\u901a\u8fc7malloc\uff0ccalloc\u6216realloc\u51fd\u6570\u5206\u914d\u7684\u5185\u5b58\u533a\u57df\u3002\u5b83\u53ef\u4ee5\u6539\u53d8\u5185\u5b58\u5757\u7684\u5927\u5c0f\uff0c\u6216\u8005\u91ca\u653e\u5185\u5b58\u5757\uff0c\u6216\u5206\u914d\u65b0\u7684\u5185\u5b58\u5757\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void *realloc(void*ptr,size_t size);<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ptr\uff1a\u6307\u5411\u9700\u8981\u91cd\u65b0\u5206\u914d\u7684\u5185\u5b58\u5757\u7684\u6307\u9488\u3002<\/li>\n\n\n\n<li>size\uff1a\u65b0\u7684\u5185\u5b58\u5757\u7684\u5927\u5c0f\uff0c\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6709\u5982\u4e0b\u60c5\u51b5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ptr\u4e0d\u4e3a\u7a7a\uff0csize=0\uff0c\u76f8\u5f53\u4e8e\u91ca\u653e\u539f\u6765\u7684\u5806\u5757\u3002<\/li>\n\n\n\n<li>ptr\u4e3a\u7a7a\u4e14size>0\uff0c\u76f8\u5f53\u4e8emalloc\u3002<\/li>\n\n\n\n<li>ptr\u4e0d\u4e3a\u7a7a\uff0csize\u5927\u4e8e\u539f\u6765\u7684\u5806\u5757\u5927\u5c0f\u5219\u5982\u679c\u8be5\u5806\u5757\u540e\u9762\u7684\u5806\u5757\u7a7a\u95f2\u5219\u5408\u5e76\u5806\u5757\uff0c\u5426\u5219<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u91ca\u653e\u539f\u5806\u5757\uff0c\u7136\u540e\u518d\u7533\u8bf7\u4e00\u4e2a\u66f4\u5927\u7684\u5806\u5757\uff0c\u539f\u5806\u5757\u5185\u5bb9\u4f1a\u88ab\u62f7\u8d1d\u8fc7\u53bb\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ptr\u4e0d\u4e3a\u7a7a\uff0csize\u4e0d\u5927\u4e8e\u539f\u6765\u7684\u5806\u5757\u5927\u5c0f\uff0c\u5982\u679c\u5207\u5272\u540e\u5269\u4e0b\u7684\u5806\u5757\u5927\u4e8e\u7b49\u4e8eMINSIZE<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5219\u5207\u5272\u5e76\u91ca\u653e\uff0c\u7136\u540e\u8fd4\u56de\u539f\u5806\u5757\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">calloc<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">calloc\uff08contiguousallocation)\u51fd\u6570\u662fc\u8bed\u8a00\u6807\u51c6\u5e93\u4e2d\u7528\u4e8e\u52a8\u6001\u5185\u5b58\u5206\u914d\u7684\u4e00\u4e2a\u51fd\u6570\u3002\u4e0emalloc\u76f8\u4f3c\uff0ccalloc\u7528\u4e8e\u5206\u914d\u5185\u5b58\u3002\u8be5\u51fd\u6570\u5728\u5206\u914d\u65f6\u4f1a\u6e05\u7a7achunk\u4e0a\u7684\u5185\u5bb9\uff0c\u8fd9\u4f7f\u5f97\u6211\u4eec\u65e0\u6cd5\u901a\u8fc7\u4ee5\u5f80\u7684\u91cd\u590d\u5b58\u53d6\u540e\u901a\u8fc7chunk\u4e0a\u6b8b\u7559\u7684\u810f\u6570\u636e\u7684\u65b9\u5f0f\u6cc4\u9732\u4fe1\u606f\uff08\u4f8b\u5982\u901a\u8fc7bins\u6570\u7ec4\u9057\u7559\u7684\u810f\u6570\u636e\u6cc4\u9732libc\u57fa\u5740\u7b49\uff09\uff0c\u540c\u65f6\u8be5\u51fd\u6570\u4e0d\u4ecetcache\u4e2d\u62ffchunk\uff0c\u4f46\u662ffree\u51fd\u6570\u9ed8\u8ba4\u8fd8\u662f\u4f1a\u5148\u5f80tcache\u91cc\u653e\u7684\uff0c\u8fd9\u65e0\u7591\u589e\u52a0\u4e86\u6211\u4eec\u5229\u7528\u7684\u96be\u5ea6\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void *calloc(size_t nmemb, size_t size);<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>nmemb\uff1a\u9700\u8981\u5206\u914d\u7684\u5143\u7d20\u4e2a\u6570\u3002<\/li>\n\n\n\n<li>size\uff1a\u6bcf\u4e2a\u5143\u7d20\u7684\u5927\u5c0f\uff0c\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\u3002<\/li>\n\n\n\n<li>\u603b\u7684\u5206\u914d\u7684\u5b57\u8282\u5927\u5c0f\u662fnmemb*size\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\uff1a\u5982\u679csize\u7684IS_MAPPED\u4f4d\u7f6e1\u5219\u4e0d\u6e05\u7a7a\u6570\u636e\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>if (chunk_is_mmapped (p))\n{\nif(_builtin_expect (perturb_byte,0))\nreturn memset (mem, O, sz);\nreturn mem;\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4fee\u6539\u5806\u4e2d\u7684\u5b57\u6bb5\u8fdb\u884c\u5229\u7528\uff0c\u6682\u4e0d\u505a\u9610\u8ff0<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">free<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">free\u51fd\u6570\u4f1a\u91ca\u653e\u7531p\u6240\u6307\u5411\u7684\u5185\u5b58\u5757\u3002\u8fd9\u4e2a\u5185\u5b58\u5757\u6709\u53ef\u80fd\u662f\u901a\u8fc7malloc\u51fd\u6570\u5f97\u5230\u7684\uff0c\u4e5f\u6709\u53ef\u80fd\u662f\u901a\u8fc7\u76f8\u5173\u7684\u51fd\u6570realloc\u5f97\u5230\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f02\u5e38\u60c5\u51b5\u5904\u7406\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53p\u4e3a\u7a7a\u6307\u9488\u65f6\uff0c\u51fd\u6570\u4e0d\u6267\u884c\u4efb\u4f55\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li>\u5f53p\u5df2\u7ecf\u88ab\u91ca\u653e\u4e4b\u540e\uff0c\u518d\u6b21\u91ca\u653e\u4f1a\u51fa\u73b0\u4e71\u4e03\u516b\u7cdf\u7684\u6548\u679c\uff0cdoublefree\u3002<\/li>\n\n\n\n<li>\u9664\u4e86\u88ab\u7981\u7528\uff08mallopt\uff09\u7684\u60c5\u51b5\u4e0b\uff0c\u5f53\u91ca\u653e\u5f88\u5927\u7684\u5185\u5b58\u7a7a\u95f4\u65f6\uff0c\u7a0b\u5e8f\u4f1a\u5c06\u8fd9\u4e9b\u5185\u5b58\u7a7a\u95f4\u8fd8\u7ed9\u7cfb\u7edf\uff0c\u4ee5\u4fbf\u4e8e\u51cf\u5c0f\u7a0b\u5e8f\u6240\u4f7f\u7528\u7684\u5185\u5b58\u7a7a\u95f4\u3002<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">mallopt<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">mallopt\u51fd\u6570\u901a\u8fc7\u63a7\u5236\u5806\u7684\u7279\u5b9a\u53c2\u6570\u7528\u4e8e\u6539\u53d8\u5806\u7684\u5206\u914d\u7b56\u7565\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int mallopt(int param,int value)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">param\uff1a\u6307\u5b9a\u8981\u4fee\u6539\u7684\u52a8\u6001\u5185\u5b58\u5206\u914d\u53c2\u6570\u3002\u8fd9\u4e2a\u53c2\u6570\u662f\u4e00\u4e2a\u6574\u6570\uff0c\u5b9a\u4e49\u4e86\u54ea\u4e00\u4e2a\u7279\u6027\u5c06\u4f1a\u88ab\u4fee\u6539\u3002\u4f8b\u5982\uff0c\u5b83\u53ef\u4ee5\u662f\u63a7\u5236\u5185\u5b58\u5bf9\u9f50\u3001\u7f13\u5b58\u5927\u5c0f\u6216\u8005\u76f8\u4f3c\u884c\u4e3a\u7684\u9009\u9879\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M_MXFAST\uff1a\u8bbe\u7f6emalloc\u7528\u4e8e\u5c0f\u5757\u5185\u5b58\u5206\u914d\u7684\u6700\u5927fast bin\u7684\u5927\u5c0f\u3002<\/li>\n\n\n\n<li>M_TRIM_THRESHOLD\uff1a\u8bbe\u7f6esbrk\u91ca\u653e\u5185\u5b58\u56de\u64cd\u4f5c\u7cfb\u7edf\u7684\u9608\u503c\u3002<\/li>\n\n\n\n<li>M_TOP_PAD\uff1a\u8bbe\u7f6esbrk\u8bf7\u6c42\u989d\u5916\u5185\u5b58\u65f6\uff0c\u4e0a\u9762\u7684\u989d\u5916\u5185\u5b58\u91cf\u3002<\/li>\n\n\n\n<li>M_MMAP_THRESHOLD\uff1a\u8bbe\u7f6e\u4f7f\u7528mmap\u8fdb\u884c\u5185\u5b58\u5206\u914d\u7684\u9608\u503c\u3002<\/li>\n\n\n\n<li>M_MMAP_MAX\uff1a\u8bbe\u7f6e\u53ef\u4ee5\u4f7f\u7528mmap\u8fdb\u884c\u5185\u5b58\u5206\u914d\u7684\u6700\u5927\u6570\u76ee\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">value\uff1a\u65b0\u7684\u503c\uff0c\u9488\u5bf9param\u6307\u5b9a\u7684\u7279\u6027\u3002\u5177\u4f53\u7684\u503c\u53d6\u51b3\u4e8eparam\uff0c\u6709\u4e9b\u7279\u6027\u53ef\u80fd\u9700\u8981\u975e\u96f6\u503c\u6765\u542f\u7528\uff0c\u96f6\u503c\u6765\u7981\u7528\uff0c\u6709\u4e9b\u5219\u9700\u8981\u5177\u4f53\u7684\u6570\u503c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd4\u56de\u503c\u662f\u4e00\u4e2a\u6574\u6570\uff0c\u6307\u793a\u51fd\u6570\u8c03\u7528\u662f\u5426\u6210\u529f\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u6210\u529f\uff0c\u8fd4\u56de\u975e\u96f6\u503c\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u5931\u8d25\uff08\u4f8b\u5982\uff0c\u4e0d\u652f\u6301\u7684\u53c2\u6570\u6216\u503c\uff09\uff0c\u8fd4\u56de\u96f6\u3002<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">\u5185\u5b58\u5206\u914d\u80cc\u540e\u7684\u7cfb\u7edf\u8c03\u7528<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5185\u5b58\u7ba1\u7406\u51fd\u6570\u80cc\u540e\u7684\u7cfb\u7edf\u8c03\u7528\u4e3b\u8981\u662f (s)brk \u51fd\u6570\u4ee5\u53ca mmap, munmap \u51fd\u6570\u3002<br>\u5728 main arena \u4e2d\u901a\u8fc7 sbrk \u6269\u5c55 heap\uff0c\u800c\u5728 thread arena \u4e2d\u901a\u8fc7 mmap \u5206\u914d\u65b0\u7684 heap\u3002<br><img decoding=\"async\" src=\"https:\/\/cdn.nlark.com\/yuque\/0\/2026\/png\/58781746\/1779000716190-814e38be-870e-410e-a380-6517cbbbb8b9.png\" width=\"480\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">(s)brk<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u5806\u7684\u64cd\u4f5c\uff0c\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u4e86 brk \u51fd\u6570\uff0cglibc \u5e93\u63d0\u4f9b\u4e86 sbrk \u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u589e\u52a0 brk \u7684\u5927\u5c0f\u6765\u5411\u64cd\u4f5c\u7cfb\u7edf\u7533\u8bf7\u5185\u5b58\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u521d\u59cb\u65f6\uff0c\u5806\u7684\u8d77\u59cb\u5730\u5740 start_brk \u4ee5\u53ca\u5806\u7684\u5f53\u524d\u672b\u5c3e brk \u6307\u5411\u540c\u4e00\u5730\u5740\u3002\u6839\u636e\u662f\u5426\u5f00\u542f ASLR\uff0c\u4e24\u8005\u7684\u5177\u4f53\u4f4d\u7f6e\u4f1a\u6709\u6240\u4e0d\u540c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u5f00\u542f ASLR \u4fdd\u62a4\u65f6\uff0cstart_brk \u4ee5\u53ca brk \u4f1a\u6307\u5411 data\/bss \u6bb5\u7684\u7ed3\u5c3e\u3002<br>\u5f00\u542f ASLR \u4fdd\u62a4\u65f6\uff0cstart_brk \u4ee5\u53ca brk \u4e5f\u4f1a\u6307\u5411\u540c\u4e00\u4f4d\u7f6e\uff0c\u53ea\u662f\u8fd9\u4e2a\u4f4d\u7f6e\u662f\u5728 data\/bss \u6bb5\u7ed3\u5c3e\u540e\u7684\u968f\u673a\u504f\u79fb\u5904\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/lycoreco.cn\/wp-content\/uploads\/2026\/05\/1779000716209-cca60edf-cd2c-4546-aa08-9180d41ce0cc.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"http:\/\/lycoreco.cn\/wp-content\/uploads\/2026\/05\/1779000716209-cca60edf-cd2c-4546-aa08-9180d41ce0cc.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1064\" title=\"\"\/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">mmap<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">malloc \u4f1a\u4f7f\u7528 mmap \u6765\u521b\u5efa\u72ec\u7acb\u7684\u533f\u540d\u6620\u5c04\u6bb5\u3002\u533f\u540d\u6620\u5c04\u7684\u76ee\u7684\u4e3b\u8981\u662f\u53ef\u4ee5\u7533\u8bf7\u4ee5 0 \u586b\u5145\u7684\u5185\u5b58\uff0c\u5e76\u4e14\u8fd9\u5757\u5185\u5b58\u4ec5\u88ab\u8c03\u7528\u8fdb\u7a0b\u6240\u4f7f\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u770b\u96ea\u7684\u7b14\u8bb0\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u5e2e\u52a9\uff0c\u6211\u4e5f\u5b66\u5230\u4e86\u4e0d\u5c11\u4e1c\u897f ptmalloc2\u662f\u76ee\u524dlinux\u6807\u51c6\u53d1\u884c\u7248\u4e2d\u4f7f\u7528\u7684\u5806\u5206 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1059,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[4,6],"class_list":["post-1061","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-14","tag-pwn","tag-6"],"_links":{"self":[{"href":"http:\/\/lycoreco.cn\/index.php\/wp-json\/wp\/v2\/posts\/1061","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/lycoreco.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/lycoreco.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/lycoreco.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/lycoreco.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1061"}],"version-history":[{"count":2,"href":"http:\/\/lycoreco.cn\/index.php\/wp-json\/wp\/v2\/posts\/1061\/revisions"}],"predecessor-version":[{"id":1065,"href":"http:\/\/lycoreco.cn\/index.php\/wp-json\/wp\/v2\/posts\/1061\/revisions\/1065"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/lycoreco.cn\/index.php\/wp-json\/wp\/v2\/media\/1059"}],"wp:attachment":[{"href":"http:\/\/lycoreco.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1061"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/lycoreco.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1061"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/lycoreco.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}