{"id":101907,"date":"2026-09-07T19:33:16","date_gmt":"2026-09-07T11:33:16","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/101907.html"},"modified":"2026-09-07T19:33:16","modified_gmt":"2026-09-07T11:33:16","slug":"linux%e7%b3%bb%e7%bb%9f%e7%af%8726-%e9%80%9a%e4%bf%a1%ef%bc%88%e4%b8%89%ef%bc%89%e8%a1%a5%ef%bc%9a%e5%85%b1%e4%ba%ab%e5%86%85%e5%ad%98%e8%ae%bf%e9%97%ae%e7%9c%9f%e7%9a%84%e4%b8%8d","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/101907.html","title":{"rendered":"Linux\u7cfb\u7edf\u7bc726\u2014\u2014\u901a\u4fe1\uff08\u4e09\uff09\u8865\uff1a\u5171\u4eab\u5185\u5b58\u8bbf\u95ee\u771f\u7684\u4e0d\u8fdb\u5185\u6838\uff1f"},"content":{"rendered":"<h2 style=\"text-align:center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"200\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260907113314-6a9ea0facf730.jpg\" width=\"200\" \/><\/h2>\n<p>\u4e0a\u4e00\u7bc7\u300a\u901a\u4fe1&#xff08;\u4e09&#xff09;&#xff1a;System V \u5171\u4eab\u5185\u5b58&#xff1a;\u4ece\u9875\u8868\u6620\u5c04\u5230 shmget\/shmat \u4e00\u6587\u641e\u61c2\u300b\u628a\u63a5\u53e3\u3001\u751f\u547d\u5468\u671f\u3001key\/shmid \u90fd\u8fc7\u4e86\u4e00\u904d\u3002\u4f46\u6709\u4e2a\u95ee\u9898\u4e00\u76f4\u6ca1\u6b63\u9762\u7b54&#xff1a;\u5171\u4eab\u5185\u5b58\u6620\u5c04\u5efa\u597d\u4e4b\u540e&#xff0c;\u8fdb\u7a0b\u8bfb\u5199\u90a3\u6bb5\u5185\u5b58&#xff0c;\u5230\u5e95\u8981\u4e0d\u8981\u8fdb\u5185\u6838\u3001\u8d70\u4e0d\u8d70\u7cfb\u7edf\u8c03\u7528&#xff1f; \u8fd9\u7bc7\u628a\u5b83\u8bb2\u900f&#xff0c;\u987a\u5e26\u8865\u4e09\u4e2a\u7bc725 \u6ca1\u7ec6\u8bf4\u7684\u9690\u85cf\u7ec6\u8282\u3002<\/p>\n<hr \/>\n<h3>\u4e00\u3001\u5148\u7ed9\u7ed3\u8bba&#xff1a;\u8bbf\u95ee\u5171\u4eab\u5185\u5b58\u6ca1\u6709\u7cfb\u7edf\u8c03\u7528<\/h3>\n<p>\u76f4\u63a5\u56de\u7b54&#xff1a;\u6620\u5c04\u5efa\u597d\u4e4b\u540e&#xff0c;\u8fdb\u7a0b\u5bf9\u5171\u4eab\u5185\u5b58\u7684\u6bcf\u4e00\u6b21\u8bfb\u5199&#xff0c;\u90fd\u4e0d\u4f1a\u89e6\u53d1\u7cfb\u7edf\u8c03\u7528\u3002<\/p>\n<p>\u53cd\u76f4\u89c9\u70b9&#xff1a;\u5f88\u591a\u4eba\u9ed8\u8ba4&#034;IPC \u561b&#xff0c;\u80af\u5b9a\u8981\u7ecf\u8fc7\u5185\u6838&#034;&#xff0c;\u5171\u4eab\u5185\u5b58\u6070\u6070\u662f\u53cd\u4f8b\u3002\u5b83\u5feb\u4e0d\u662f&#034;\u5feb\u4e00\u70b9&#034;&#xff0c;\u662f\u6839\u672c\u4e0d\u8fdb\u5185\u6838\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48\u8fd9\u4e2a\u95ee\u9898\u5173\u952e&#xff1a;\u5f04\u61c2&#034;\u4e0d\u8fdb\u5185\u6838&#034;&#xff0c;\u5c31\u5f04\u61c2\u4e86\u5b83\u4e3a\u4ec0\u4e48\u662f IPC \u901f\u5ea6\u5929\u82b1\u677f&#xff0c;\u4e5f\u5f04\u61c2\u4e86&#034;\u96f6\u62f7\u8d1d&#034;\u5230\u5e95\u7701\u6389\u4e86\u54ea\u4e00\u6b65\u3002<\/p>\n<hr \/>\n<h3>\u4e8c\u3001\u4e3a\u4ec0\u4e48\u6ca1\u7cfb\u7edf\u8c03\u7528&#xff1a;\u5730\u5740\u5728\u7528\u6237\u7a7a\u95f4<\/h3>\n<p>\u8fdb\u7a0b\u865a\u62df\u5730\u5740\u7a7a\u95f4\u5e03\u5c40\u5927\u81f4\u662f&#xff1a;\u4ee3\u7801\u6bb5\u3001\u6570\u636e\u6bb5\u3001\u5806\u3001\u6808\u2026\u2026\u5171\u4eab\u5185\u5b58\u7684\u6620\u5c04\u533a\u57df\u901a\u5e38\u843d\u5728\u5806\u548c\u6808\u4e4b\u95f4\u7684\u7528\u6237\u7a7a\u95f4\u533a\u57df\u3002<\/p>\n<p>\u7ba1\u9053\u4e0d\u4e00\u6837&#xff1a;<span style=\"color:#ff9900\">\u7ba1\u9053\u662f\u6587\u4ef6<\/span>&#xff0c;\u6570\u636e\u5b58\u5728\u5185\u6838\u7684<span style=\"color:#fe2c24\">\u6587\u4ef6\u7f13\u51b2\u533a<\/span>\u3002\u7528\u6237\u8981\u8bfb\u5199\u5fc5\u987b\u8c03 read \/ write&#xff0c;\u8fd9\u4fe9\u672c\u8eab\u5c31\u662f\u7cfb\u7edf\u8c03\u7528&#xff0c;\u4f1a\u5207\u5230\u5185\u6838\u6001\u628a\u6570\u636e\u4ece\u5185\u6838\u7f13\u51b2\u533a\u642c\u5230\u7528\u6237\u7a7a\u95f4&#xff08;\u6216\u53cd\u8fc7\u6765&#xff09;\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"381\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260907113315-6a9ea0fb11ed8.png\" width=\"957\" \/><\/p>\n<p>\u5171\u4eab\u5185\u5b58\u76f8\u53cd&#xff1a;shmat \u628a\u90a3\u6bb5\u7269\u7406\u5185\u5b58\u6620\u5c04\u8fdb\u672c\u8fdb\u7a0b\u7684\u865a\u62df\u5730\u5740\u7a7a\u95f4\u540e&#xff0c;\u4f60\u62ff\u5230\u7684 shmaddr \u5c31\u662f\u4e00\u4e2a\u666e\u901a\u7528\u6237\u6001\u865a\u62df\u5730\u5740\u3002\u4e4b\u540e addr[i] &#061; &#039;A&#039; \u8fd9\u79cd\u64cd\u4f5c&#xff0c;\u548c\u5199\u666e\u901a\u6570\u7ec4\u6ca1\u533a\u522b\u2014\u2014CPU \u7ecf MMU \u76f4\u63a5\u8bbf\u95ee\u9875\u8868\u6307\u5411\u7684\u7269\u7406\u9875&#xff0c;\u5168\u7a0b\u5728\u7528\u6237\u6001&#xff0c;\u5185\u6838\u4e0d\u53c2\u4e0e\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"980\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260907113315-6a9ea0fb306de.png\" width=\"1200\" \/><\/p>\n<p>\u6f84\u6e05\u4e00\u4e2a\u8bef\u533a&#xff08;\u56de\u6307\u7bc725&#xff09;&#xff1a;\u4e0d\u662f&#034;\u5efa\u7acb\u6620\u5c04\u4e0d\u8fdb\u5185\u6838&#034;\u3002shmget \/ shmat \/ shmdt \/ shmctl \u90fd\u662f\u7cfb\u7edf\u8c03\u7528&#xff0c;\u9875\u8868\u6539\u5199\u7531\u5185\u6838\u5b8c\u6210\u3002\u4f46\u6620\u5c04\u5efa\u597d\u4e4b\u540e\u7684\u90a3\u65e0\u6570\u6b21\u8bfb\u5199&#xff0c;\u4e0d\u518d\u8fdb\u5185\u6838\u3002\u4e00\u6b21\u5efa\u3001\u6c38\u8fdc\u7528&#xff0c;\u8fd9\u5c31\u662f\u5b83\u6bd4\u7ba1\u9053\u7701\u6389\u7684\u4e24\u8d9f\u62f7\u8d1d\u3002<\/p>\n<hr \/>\n<h3>\u4e09\u3001shmat \u8fd4\u56de\u7684\u662f\u4ec0\u4e48&#xff1a;\u865a\u62df\u5730\u5740&#xff0c;\u548c malloc \u540c\u7406<\/h3>\n<p>shmat \u8fd4\u56de void*&#xff0c;\u672c\u8d28\u662f\u4e00\u4e2a\u865a\u62df\u5730\u5740&#xff0c;\u4e0d\u662f\u7269\u7406\u5730\u5740&#xff0c;\u4e5f\u4e0d\u662f&#034;\u6587\u4ef6\u53e5\u67c4&#034;\u3002<\/p>\n<p>\u7c7b\u6bd4 malloc&#xff1a;malloc \u8fd4\u56de\u7684\u4e5f\u662f\u865a\u62df\u5730\u5740&#xff0c;\u7269\u7406\u9875\u662f\u5185\u6838\u6309\u9700\u5206\u914d\u7684&#xff1b;shmat \u540c\u7406&#xff0c;\u533a\u522b\u53ea\u5728\u4e8e\u5b83\u6620\u5c04\u5230\u7684\u7269\u7406\u9875\u662f\u591a\u8fdb\u7a0b\u5171\u4eab\u7684\u90a3\u4e00\u5757&#xff0c;\u800c malloc \u62ff\u5230\u7684\u662f\u672c\u8fdb\u7a0b\u79c1\u6709\u7269\u7406\u9875\u3002<\/p>\n<p>\u63a8\u8bba&#xff1a;\u4f60\u5728\u5171\u4eab\u5185\u5b58\u4e0a\u505a\u7684\u6240\u6709\u64cd\u4f5c\u2014\u2014\u6307\u9488\u504f\u79fb\u3001memcpy\u3001\u4e0b\u6807\u8bbf\u95ee\u2014\u2014\u90fd\u548c\u672c\u5730\u5185\u5b58\u4e00\u6837&#xff0c;\u96f6\u989d\u5916\u6210\u672c\u3002\u8fd9\u4e5f\u662f&#034;\u96f6\u62f7\u8d1d&#034;\u7684\u771f\u6b63\u542b\u4e49&#xff1a;\u6ca1\u6709\u5185\u6838\u642c\u8fd0\u8fd9\u4e00\u73af&#xff0c;\u6570\u636e\u662f&#034;\u5927\u5bb6\u76f4\u63a5\u6539\u540c\u4e00\u5757\u7269\u7406\u9875&#034;\u3002<\/p>\n<hr \/>\n<h3>\u56db\u3001\u5927\u5c0f\u4e3a\u4ec0\u4e48\u5fc5\u987b\u6309 4KB \u5bf9\u9f50<\/h3>\n<p>\u7269\u7406\u5185\u5b58\u6309\u9875\u7ba1\u7406&#xff0c;Linux \u901a\u5e38\u4e00\u9875 4096 \u5b57\u8282\u3002shmget \u7533\u8bf7\u5171\u4eab\u5185\u5b58\u65f6&#xff0c;\u5185\u6838\u6309\u9875\u5411\u4e0a\u53d6\u6574\u5206\u914d\u3002<\/p>\n<p>\u4f60\u4f20 size &#061; 4097 \u4f1a\u600e\u6837&#xff1f;\u5185\u6838\u5b9e\u9645\u7ed9\u4f60\u4e24\u9875 &#061; 8192 \u5b57\u8282&#xff0c;\u4f46 shmid_ds.shm_segsz \u663e\u793a\u7684\u8fd8\u662f\u4f60\u7533\u8bf7\u7684 4097\u3002\u591a\u51fa\u6765\u7684\u90e8\u5206\u88ab\u6d6a\u8d39&#xff0c;\u4e14\u4f60\u4e0d\u80fd\u8d8a\u754c\u4f7f\u7528\u3002<\/p>\n<p>\u9a8c\u8bc1\u65b9\u6cd5&#xff1a;<\/p>\n<p>ipcs -m <\/p>\n<p>\u7528 ipcs -m \u770b\u5bf9\u5e94\u6bb5\u7684 size \u5217&#xff0c;\u6216\u5728\u4ee3\u7801\u91cc\u6253\u5370 shm_segsz\u3002\u4e00\u822c\u76f4\u63a5\u4f20 4096 \u7684\u6574\u6570\u500d&#xff08;4096\u30018192\u2026\u2026&#xff09;\u6700\u5e72\u51c0\u3002<\/p>\n<p>\u5212\u91cd\u70b9&#xff1a;\u8fd9\u4e0d\u662f&#034;\u5efa\u8bae&#034;&#xff0c;\u662f\u5185\u6838\u5206\u914d\u7c92\u5ea6\u7684\u786c\u7ea6\u675f\u3002<span style=\"color:#a2e043\">\u4e0d\u5bf9\u9f50\u4e0d\u4f1a\u62a5\u9519&#xff0c;\u4f46\u4f1a\u591a\u5360\u7269\u7406\u9875\u3001\u9020\u6210\u6d6a\u8d39\u3002<\/span><\/p>\n<hr \/>\n<h3>\u4e94\u3001\u6ca1\u6709\u540c\u6b65&#xff0c;\u73b0\u573a\u80fd\u4e71\u6210\u4ec0\u4e48\u6837<\/h3>\n<p>\u7bc725 \u8bf4\u8fc7&#034;\u5171\u4eab\u5185\u5b58\u4e0d\u5e26\u540c\u6b65\u4e92\u65a5&#034;&#xff0c;\u8fd9\u91cc\u7ed9\u4e2a\u76f4\u89c2\u73b0\u573a\u3002<\/p>\n<p>\u57fa\u4e8e\u7bc725 \u7684 server \/ client demo&#xff1a;\u5982\u679c server \u5148\u542f\u52a8&#xff0c;sleep 2 \u540e\u5f00\u59cb\u5faa\u73af\u8bfb&#xff1b;\u800c client \u8fd8\u5728 sleep 1 &#043; sleep 2&#xff0c;\u8fd8\u6ca1\u5f80\u91cc\u5199\u3002<\/p>\n<p>server \u7b2c\u4e00\u6b21 printf \u8bfb\u5230\u7684\u5c31\u662f\u7a7a\u767d\u6216\u4e0a\u4e00\u6b21\u7684\u65e7\u6570\u636e\u2014\u2014\u4e0d\u662f&#034;\u7b49 client \u5199\u5b8c\u518d\u8bfb&#034;&#xff0c;\u800c\u662f\u76f4\u63a5\u8bfb\u3001\u8bfb\u5230\u5565\u7b97\u5565\u3002<\/p>\n<p>\u6839\u56e0&#xff1a;\u5171\u4eab\u5185\u5b58\u53ea\u8d1f\u8d23&#034;\u5927\u5bb6\u770b\u5f97\u5230\u540c\u4e00\u5757&#034;&#xff0c;\u4e0d\u8d1f\u8d23&#034;\u8c01\u5148\u5199\u8c01\u540e\u8bfb&#034;\u7684\u987a\u5e8f&#xff0c;\u4e5f\u6ca1<span style=\"color:#fe2c24\">\u6709\u8bfb\u5199\u4fdd\u62a4<\/span>\u3002\u591a\u4e2a\u8fdb\u7a0b\u5e76\u53d1\u5199\u8fd8\u4f1a\u4e92\u76f8\u8986\u76d6\u3002<\/p>\n<p>\u7ed3\u8bba&#xff1a;\u5b9e\u9645\u9879\u76ee\u91cc\u5171\u4eab\u5185\u5b58\u5fc5\u987b\u914d\u4fe1\u53f7\u91cf&#xff08;\u4e0b\u4e00\u7bc7\u300a\u901a\u4fe1&#xff08;\u56db&#xff09;\u300b&#xff09;\u6216\u7528\u7ba1\u9053\u505a\u901a\u77e5\u3002\u672c\u7bc7\u53ea\u70b9\u73b0\u8c61&#xff0c;\u65b9\u6848\u7559\u5230\u4e0b\u7bc7\u3002<\/p>\n<hr \/>\n<h3>\u516d\u3001\u56de\u6307\u7bc725&#xff1a;\u63a5\u53e3 \/ \u751f\u547d\u5468\u671f \/ key-shmid \u4e0d\u91cd\u8bb2<\/h3>\n<p>\u8fd9\u7bc7\u662f\u7bc725 \u7684\u8865\u9057&#xff0c;\u4e0b\u9762\u8fd9\u4e9b\u7bc725 \u5df2\u7ecf\u8bb2\u900f&#xff0c;\u8fd9\u91cc\u4e0d\u91cd\u590d&#xff1a;<\/p>\n<ul>\n<li>\u4e94\u4e2a\u63a5\u53e3 ftok \/ shmget \/ shmat \/ shmdt \/ shmctl \u7684\u7528\u6cd5&#xff1b;<\/li>\n<li>\u751f\u547d\u5468\u671f\u968f\u5185\u6838\u3001ipcs -m \/ ipcrm -m \u6e05\u7406\u6b8b\u7559&#xff1b;<\/li>\n<li>key \u4e0e shmid \u7684\u533a\u522b&#xff1b;<\/li>\n<li>\u591a\u6587\u4ef6 demo \u4e0e IPC_CREAT | IPC_EXCL\u3002<\/li>\n<\/ul>\n<p>\u6ca1\u770b\u8fc7\u7bc725 \u7684&#xff0c;\u5148\u53bb\u628a\u300a\u901a\u4fe1&#xff08;\u4e09&#xff09;&#xff1a;System V \u5171\u4eab\u5185\u5b58&#xff1a;\u4ece\u9875\u8868\u6620\u5c04\u5230 shmget\/shmat \u4e00\u6587\u641e\u61c2\u300b\u770b\u4e86&#xff0c;\u518d\u56de\u6765\u5543\u8fd9\u7bc7\u7ec6\u8282\u3002<\/p>\n<hr \/>\n<h3>\u4e03\u3001\u5171\u4eab\u5185\u5b58\u7684\u4f18\u7f3a\u70b9<\/h3>\n<p>\u524d\u9762\u51e0\u8282\u628a\u673a\u5236\u62c6\u5f00\u4e86&#xff0c;\u8fd9\u91cc\u6536\u4e00\u5f20\u603b\u8868&#xff0c;\u65b9\u4fbf\u9762\u8bd5\u65f6\u4e00\u53e3\u62a5\u5168\u3002<\/p>\n<p>\u4f18\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u901f\u5ea6\u6700\u5feb&#xff1a;\u6620\u5c04\u5efa\u597d\u540e\u8bfb\u5199\u4e0d\u8fdb\u5185\u6838\u3001\u96f6\u62f7\u8d1d&#xff0c;\u662f IPC \u91cc\u7684\u6027\u80fd\u5929\u82b1\u677f\u3002<\/li>\n<li>\u7528\u6cd5\u7b80\u5355&#xff1a;shmat \u62ff\u5230\u6307\u9488\u5c31\u80fd\u5f53\u672c\u5730\u5185\u5b58\u7528&#xff0c;\u548c malloc \u4e00\u4e2a\u9053\u7406&#xff0c;\u6ca1\u6709 read\/write \u90a3\u5957\u3002<\/li>\n<li>\u625b\u5927\u5757\u6570\u636e&#xff1a;\u7ba1\u9053\u642c\u5927\u5757\u6570\u636e\u5f00\u9500\u660e\u663e&#xff0c;\u5171\u4eab\u5185\u5b58\u65e0\u5185\u6838\u642c\u8fd0&#xff0c;\u91cf\u8d8a\u5927\u4f18\u52bf\u8d8a\u7a81\u51fa\u3002 \u00a0<\/li>\n<\/ul>\n<p>\u7f3a\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u65e0\u540c\u6b65\u4e92\u65a5&#xff1a;\u591a\u8fdb\u7a0b\u5e76\u53d1\u8bfb\u5199\u4f1a\u4e71&#xff0c;\u5fc5\u987b\u81ea\u5df1\u914d\u4fe1\u53f7\u91cf\u6216\u7528\u7ba1\u9053\u901a\u77e5&#xff08;\u672c\u7bc7\u4e94\u5df2\u7ed9\u73b0\u573a&#xff09;\u3002<\/li>\n<li>\u65e0\u8bbf\u95ee\u63a7\u5236&#xff1a;\u4efb\u4f55\u6302\u63a5\u8fdb\u7a0b\u90fd\u80fd\u8bfb\u80fd\u5199&#xff0c;\u6ca1\u6709\u8bfb\u5199\u6743\u9650\u9694\u79bb\u3002<\/li>\n<li>\u751f\u547d\u5468\u671f\u8981\u624b\u52a8\u7ba1&#xff1a;\u968f\u5185\u6838&#xff0c;\u4e0d\u5220\u5c31\u6cc4\u6f0f&#xff0c;\u5f97\u9760 ipcrm \u6216 shmctl(IPC_RMID) \u6e05\u7406\u3002<\/li>\n<li>\u5927\u5c0f\u53d7\u9875\u5bf9\u9f50\u7ea6\u675f&#xff1a;\u4e0d\u5bf9\u9f50\u6d6a\u8d39\u7269\u7406\u9875&#xff08;\u672c\u7bc7\u56db\u5df2\u8bb2&#xff09;\u3002<\/li>\n<\/ul>\n<p><span style=\"color:#fe2c24\">\u00a0\u4e00\u53e5\u8bdd&#xff1a;\u5171\u4eab\u5185\u5b58\u662f\u201c\u628a\u6027\u80fd\u7ed9\u4f60&#xff0c;\u628a\u79e9\u5e8f\u7559\u7ed9\u4f60\u81ea\u5df1\u201d\u7684 IPC\u3002<\/span><\/p>\n<hr \/>\n<h3>\u516b\u3001\u9762\u8bd5\u5b98\u8ffd\u95ee&#xff08;\u672c\u7bc7\u65b0\u589e&#xff09;<\/h3>\n<table>\n<tr>\u95ee\u9898\u7b54\u6848<\/tr>\n<tbody>\n<tr>\n<td>\u8bbf\u95ee\u5171\u4eab\u5185\u5b58\u671f\u95f4\u4f1a\u53d1\u751f\u7cfb\u7edf\u8c03\u7528\u5417&#xff1f;<\/td>\n<td>\u6620\u5c04\u5efa\u597d\u4e4b\u540e\u4e0d\u4f1a\u3002shmat \u8fd4\u56de\u7684\u662f\u7528\u6237\u6001\u865a\u62df\u5730\u5740&#xff0c;\u540e\u7eed\u8bfb\u5199\u53ea\u662f\u8bbf\u95ee\u81ea\u5df1\u7684\u9875\u8868\u6620\u5c04&#xff0c;\u5168\u7a0b\u7528\u6237\u6001&#xff1b;\u53ea\u6709\u5efa \/ \u6302 \/ \u6458 \/ \u5220\u90a3\u51e0\u6b21\u7cfb\u7edf\u8c03\u7528\u624d\u8fdb\u5185\u6838\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u5171\u4eab\u5185\u5b58\u5927\u5c0f\u4e3a\u4ec0\u4e48\u8981\u6309\u9875\u5bf9\u9f50&#xff1f;<\/td>\n<td>\u5185\u6838\u6309 4KB \u7269\u7406\u9875\u5206\u914d&#xff0c;\u4f20 4097 \u5b9e\u9645\u62ff 8192&#xff0c;\u591a\u51fa\u7684\u6d6a\u8d39&#xff1b;\u4f20\u6574\u6570\u500d\u6700\u5e72\u51c0\u3002<\/td>\n<\/tr>\n<tr>\n<td>shmat \u8fd4\u56de\u7684\u548c malloc \u8fd4\u56de\u7684\u672c\u8d28\u533a\u522b&#xff1f;<\/td>\n<td>\n<p>\u90fd\u662f\u865a\u62df\u5730\u5740&#xff1b;<\/p>\n<p>\u533a\u522b\u5728\u6620\u5c04\u5230\u7684\u7269\u7406\u9875&#xff1a;malloc \u662f\u8fdb\u7a0b\u79c1\u6709&#xff0c;shmat \u662f\u591a\u8fdb\u7a0b\u5171\u4eab\u540c\u4e00\u5757\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\u4e3a\u4ec0\u4e48\u5171\u4eab\u5185\u5b58\u6bd4\u7ba1\u9053\u5feb&#xff1f;<\/td>\n<td>\n<p>\u7ba1\u9053\u6570\u636e\u8d70\u5185\u6838\u6587\u4ef6\u7f13\u51b2\u533a&#xff0c;\u6bcf\u6b21\u8bfb\u5199\u90fd\u7cfb\u7edf\u8c03\u7528\u642c\u6570\u636e&#xff1b;<\/p>\n<p>\u5171\u4eab\u5185\u5b58\u6620\u5c04\u540e\u76f4\u63a5\u7528\u6237\u6001\u8bbf\u95ee\u7269\u7406\u9875&#xff0c;\u65e0\u5185\u6838\u642c\u8fd0\u3002<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3>\u4e5d\u3001\u5c0f\u7ed3<\/h3>\n<p>\u4e00\u53e5\u8bdd&#xff1a;\u5171\u4eab\u5185\u5b58\u6620\u5c04\u5efa\u597d\u540e&#xff0c;\u8bfb\u5199\u4e0d\u8fdb\u5185\u6838\u3001\u65e0\u7cfb\u7edf\u8c03\u7528&#xff0c;\u56e0\u4e3a\u5b83\u662f\u7528\u6237\u7a7a\u95f4\u7684\u865a\u62df\u5730\u5740&#xff1b;shmat \u548c malloc \u540c\u7406&#xff0c;\u53ea\u662f\u7269\u7406\u9875\u88ab\u591a\u4e2a\u8fdb\u7a0b\u5171\u4eab\u3002<\/p>\n<p>\u4e09\u4e2a\u9690\u85cf\u7ec6\u8282&#xff1a;<\/p>\n<li>\u6ca1\u7cfb\u7edf\u8c03\u7528&#xff0c;\u662f\u5b83\u6700\u5feb\u7684\u6839\u672c\u539f\u56e0&#xff1b;<\/li>\n<li>\u5927\u5c0f\u6309 4KB \u9875\u5bf9\u9f50&#xff0c;\u4e0d\u5bf9\u9f50\u767d\u767d\u6d6a\u8d39\u7269\u7406\u9875&#xff1b;<\/li>\n<li>\u65e0\u540c\u6b65\u4f1a\u5bfc\u81f4\u8bfb\u5230\u7a7a\u767d \/ \u65e7\u6570\u636e&#xff0c;\u5fc5\u987b\u914d\u4fe1\u53f7\u91cf\u3002<\/li>\n<p>\u56de\u6307\u7bc725 \u770b\u63a5\u53e3\u4e0e\u751f\u547d\u5468\u671f&#xff1b;\u4e0b\u4e00\u7bc7\u300a\u901a\u4fe1&#xff08;\u56db&#xff09;\u300b\u7528\u4fe1\u53f7\u91cf\u628a&#034;\u540c\u6b65&#034;\u8fd9\u4e2a\u5751\u6b63\u5f0f\u586b\u4e0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0a\u4e00\u7bc7\u300a\u901a\u4fe1&#xff08;\u4e09&#xff09;&#xff1a;System V \u5171\u4eab\u5185\u5b58&#xff1a;\u4ece\u9875\u8868\u6620\u5c04\u5230 shmget\/shmat \u4e00\u6587\u641e\u61c2\u300b\u628a\u63a5\u53e3\u3001\u751f\u547d\u5468\u671f\u3001key\/shmid \u90fd\u8fc7\u4e86\u4e00\u904d\u3002\u4f46\u6709\u4e2a\u95ee\u9898\u4e00\u76f4\u6ca1\u6b63\u9762\u7b54&#xff1a;\u5171\u4eab\u5185\u5b58\u6620\u5c04\u5efa\u597d\u4e4b\u540e&#xff0c;\u8fdb\u7a0b\u8bfb\u5199\u90a3\u6bb5\u5185\u5b58&#xff0c;\u5230\u5e95\u8981\u4e0d\u8981\u8fdb\u5185\u6838\u3001\u8d70\u4e0d\u8d70\u7cfb\u7edf\u8c03\u7528&#xff1f; \u8fd9\u7bc7\u628a\u5b83\u8bb2\u900f&#xff0c;\u987a\u5e26\u8865\u4e09\u4e2a\u7bc725 \u6ca1\u7ec6\u8bf4\u7684\u9690\u85cf\u7ec6\u8282\u3002\u4e00\u3001\u5148\u7ed9\u7ed3\u8bba&#xff1a;\u8bbf\u95ee\u5171\u4eab\u5185\u5b58\u6ca1\u6709\u7cfb\u7edf\u8c03\u7528\u76f4\u63a5<\/p>\n","protected":false},"author":2,"featured_media":101904,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,43,44],"topic":[],"class_list":["post-101907","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-linux","tag-43","tag-44"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Linux\u7cfb\u7edf\u7bc726\u2014\u2014\u901a\u4fe1\uff08\u4e09\uff09\u8865\uff1a\u5171\u4eab\u5185\u5b58\u8bbf\u95ee\u771f\u7684\u4e0d\u8fdb\u5185\u6838\uff1f - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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