{"id":2652,"date":"2019-01-03T16:24:42","date_gmt":"2019-01-03T08:24:42","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=2652"},"modified":"2019-01-03T16:24:42","modified_gmt":"2019-01-03T08:24:42","slug":"%e7%8e%af%e5%bd%a2%e7%bc%93%e5%86%b2%e5%8c%ba","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/2652","title":{"rendered":"\u73af\u5f62\u7f13\u51b2\u533a"},"content":{"rendered":"<div class=\"clear\">\u4f5c\u8005\uff1a<a href=\"http:\/\/www.cnblogs.com\/zengzy\/\" target=\"_blank\" rel=\"noopener\">\u66fe\u5fd7\u4f18<\/a><\/div>\n<div class=\"postBody\">\n<div id=\"cnblogs_post_body\" class=\"blogpost-body\">\n<p>\u51fa\u5904\uff1a<a href=\"http:\/\/www.cnblogs.com\/zengzy\/\" target=\"_blank\" rel=\"noopener\">\u00a0http:\/\/www.cnblogs.com\/zengzy<\/a><\/p>\n<p>1\u3001\u73af\u5f62\u7f13\u51b2\u533a<\/p>\n<p>\u7f13\u51b2\u533a\u7684\u597d\u5904\uff0c\u5c31\u662f\u7a7a\u95f4\u6362\u65f6\u95f4\u548c\u534f\u8c03\u5feb\u6162\u7ebf\u7a0b\u3002\u7f13\u51b2\u533a\u53ef\u4ee5\u7528\u5f88\u591a\u8bbe\u8ba1\u6cd5\uff0c\u8fd9\u91cc\u8bf4\u4e00\u4e0b\u73af\u5f62\u7f13\u51b2\u533a\u7684\u51e0\u79cd\u8bbe\u8ba1\u65b9\u6848\uff0c\u53ef\u4ee5\u770b\u6210\u662f\u51e0\u79cd\u73af\u5f62\u7f13\u51b2\u533a\u7684\u6a21\u5f0f\u3002\u8bbe \u8ba1\u73af\u5f62\u7f13\u51b2\u533a\u6d89\u53ca\u5230\u51e0\u4e2a\u70b9\uff0c\u4e00\u662f\u8d85\u51fa\u7f13\u51b2\u533a\u5927\u5c0f\u7684\u7684\u7d22\u5f15\u5982\u4f55\u5904\u7406\uff0c\u4e8c\u662f\u5982\u4f55\u8868\u793a\u7f13\u51b2\u533a\u6ee1\u548c\u7f13\u51b2\u533a\u7a7a\uff0c\u4e09\u662f\u5982\u4f55\u5165\u961f\u3001\u51fa\u961f\uff0c\u56db\u662f\u7f13\u51b2\u533a\u4e2d\u6570\u636e\u957f\u5ea6\u5982\u4f55\u8ba1\u7b97\u3002<\/p>\n<p><strong>ps.\u89c4\u5b9a\u4ee5\u4e0b\u6240\u6709\u65b9\u6848\uff0c\u5728\u7f13\u51b2\u533a\u6ee1\u65f6\u4e0d\u53ef\u518d\u5199\u5165\u6570\u636e\uff0c\u7f13\u51b2\u533a\u7a7a\u65f6\u4e0d\u80fd\u8bfb\u6570\u636e<\/strong><\/p>\n<h2>1.1\u3001\u5e38\u89c4\u6570\u7ec4\u73af\u5f62\u7f13\u51b2\u533a<\/h2>\n<p>\u8bbe\u7f13\u51b2\u533a\u5927\u5c0f\u4e3aN\uff0c\u961f\u5934out\uff0c\u961f\u5c3ein\uff0cout\u3001in\u5747\u662f\u4e0b\u6807\u8868\u793a:<\/p>\n<ul>\n<li>\u521d\u59cb\u65f6\uff0cin=out=0<\/li>\n<li>\u961f\u5934\u961f\u5c3e\u7684\u66f4\u65b0\u7528\u53d6\u6a21\u64cd\u4f5c\uff0cout=(out+1)%N\uff0cin=(in+1)%N<\/li>\n<li>out==in\u8868\u793a\u7f13\u51b2\u533a\u7a7a\uff0c(in+1)%N==out\u8868\u793a\u7f13\u51b2\u533a\u6ee1<\/li>\n<li>\u5165\u961fque[in]=value;in=(in+1)%N;<\/li>\n<li>\u51fa\u961fret =que[out];out=(out+1)%N;<\/li>\n<li>\u6570\u636e\u957f\u5ea6 len =( in &#8211; out + N) % N<\/li>\n<\/ul>\n<h2>1.2\u3001\u6539\u8fdb\u7248\u6570\u7ec4\u73af\u5f62\u7f13\u51b2\u533a<\/h2>\n<p>\u540c\u6837\u5047\u8bbe\u7f13\u51b2\u533a\u5927\u5c0f\u4e3aN\uff0c\u961f\u5934out\uff0c\u961f\u5c3ein\uff0cout\u3001in\u4e3a\u6570\u7ec4\u4e0b\u6807\uff0c\u4f46\u6570\u636e\u7c7b\u578b\u4e3aunsigned int\u3002<\/p>\n<ul>\n<li>\u521d\u59cb\u65f6\uff0cin=out=0<\/li>\n<li>\u4e0a\u8c03\u7f13\u51b2\u533a\u5927\u5c0fN\u4e3a2\u7684\u5e42\uff0c\u5047\u8bbe\u4e3aM<\/li>\n<li>\u961f\u5934\u961f\u5c3e\u66f4\u65b0\u4e0d\u518d\u53d6\u6a21\uff0c\u76f4\u63a5++out\uff0c++in<\/li>\n<li>out==in\u8868\u793a\u7f13\u51b2\u533a\u7a7a\uff0c(in-out)==M\u8868\u793a\u7f13\u51b2\u533a\u6ee1<\/li>\n<li>\u5165\u961fque[in&amp;(M-1)] = value ; ++in;<\/li>\n<li>\u51fa\u961fret = que[out&amp;(M-1)] ; \u00a0++out;<\/li>\n<li>in-out\u8868\u793a\u6570\u636e\u957f\u5ea6<\/li>\n<\/ul>\n<p>\u8fd9\u4e2a\u6539\u8fdb\u7684\u601d\u60f3\u6765\u81ealinux\u5185\u6838\u5faa\u73af\u961f\u5217<strong><a href=\"http:\/\/www.cnblogs.com\/Anker\/p\/3481373.html\" target=\"_blank\" rel=\"noopener\">kfifo<\/a><\/strong>\uff0c\u8fd9\u91cc\u89e3\u91ca\u4e00\u4e0b\u51e0\u4e2a\u884c\u4e3a\u7684\u542b\u4e49\u53ca\u539f\u7406<\/p>\n<p><strong>\u2474\u4e0a\u8c03\u7f13\u51b2\u533a\u5927\u5c0f\u81f32\u7684\u5e42<\/strong><\/p>\n<p>\u8fd9\u662f\u65b9\u4fbf\u53d6\u6a21\uff0cx%M == x&amp;(M-1) \u4e3a\u771f\uff0c\u4f4d\u8fd0\u7b97\u7684\u6548\u7387\u6bd4\u53d6\u6a21\u8981\u9ad8\u3002\u7528\u4e00\u4e2a\u4f8b\u5b50\u6765\u5206\u6790\u4e00\u4e0b\u4e3a\u4ec0\u4e48\u7b49\u5f0f\u6210\u7acb\u7684:<\/p>\n<p>\u5047\u8bbeM=8=2\u00b3\uff0c\u90a3\u4e48M-1=7\uff0c\u4e8c\u8fdb\u5236\u4e3a0000 0111<\/p>\n<p>\u2460\u82e5 x&lt;8 \u00a0 &#8212;-&gt; \u00a0 x&amp;7=x \u00a0, x%8 = x\uff0c\u7b49\u5f0f\u6210\u7acb<\/p>\n<p>\u2461\u82e5 x&gt;8 \u00a0 &#8212;-&gt; \u00a0 x = 2^a+2^b+2^c+&#8230; \u00a0 \u6bd4\u5982\uff0c51 = 1+2+16+32 = 2^0+2^1+2^4+2^5 \uff0c\u6c42 51&amp;7\u65f6\uff0c\u7531\u4e8e7\u7684\u4e8c\u8fdb\u52360000 0111\uff0c\u6240\u4ee52\u7684\u5e42\u53ea\u8981\u5927\u4e8e\u7b49\u4e8e2\u00b3\u7684\u6570\uff0c\u4e0e\u4e0a7\u7ed3\u679c\u90fd\u662f0\uff0c\u6240\u4ee52^4 &amp; 7 = 0 , 2^5 &amp; 7 = 0, (2^0+2^1+2^4+2^5) &amp; (7) = 2^0+2^1=3\u3002\u800c\u6839\u636e\u2460\uff0c(2^0+2^1)&amp;7 =\u00a0(2^0+2^1)%8 \uff0c\u6240\u4ee551&amp;7=51%8<\/p>\n<p>\u7efc\u4e0a\u5f97\u8bc1\u3002<\/p>\n<p><strong>\u2475out\u3001in\u7c7b\u578b\u8bbe\u8ba1\u4e3aunsigned int<\/strong><\/p>\n<p>\u65e0\u7b26\u53f7\u6574\u5f62\u7684\u6ea2\u51fa\u4e4b\u540e\uff0c\u53c8\u4ece0\u5f00\u59cb\u8ba1\u6570\uff1aMAX_UNSIGNED_INT + 1 = 0 \uff0cMAX_UNSIGNED_INT + 2 = 1 \uff0c&#8230; \u00a0\u3002<\/p>\n<p>in\u3001out\u6ea2\u51fa\u4e4b\u524d\uff0c\u90fd\u80fd\u901a\u8fc7&amp;\u628ain\u3001out\u6620\u5c04\u5230\u6b63\u786e\u7684\u4f4d\u7f6e\u4e0a\uff0c\u90a3\u6ea2\u51fa\u4e4b\u540e\u5462\uff1f\u53ef\u4ee5\u4e3e\u4e2a\u4f8b\u5b50\u6765\uff1a<\/p>\n<p>\u5047\u8bbe\u73b0\u5728in=MAX_UNSIGNED_INT\uff0c\u90a3\u4e48in &amp; (M-1) = M-1 \uff0c\u4e5f\u5c31\u662f\u6700\u540e\u4e00\u4e2a\u4f4d\u7f6e\uff0c\u518d\u5165\u961f\u65f6\uff0c\u5e94\u8be5\u4ece\u5934\u5f00\u59cb\u5165\u961f\uff0c\u4e5f\u5c31\u662f0\uff0c\u800cin+1\u4e5f\u4e3a0\uff0c\u6240\u4ee5\u5373\u4f7f\u6ea2\u51fa\u4e86\uff0c(in+1)&amp;(M-1)\u4ecd\u7136\u80fd\u6620\u5c04\u5230\u6b63\u786e\u7684 \u4f4d\u7f6e\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u6211\u4eec\u5165\u961f\u51fa\u961f\u53ea\u8981\u505a\u4e2a\u4e0e\u6620\u5c04\u548c++\u64cd\u4f5c\u5c31\u80fd\u4fdd\u8bc1\u6b63\u786e\u7684\u539f\u56e0\u3002<\/p>\n<p>\u800c\uff0c\u6839\u636e\u5165\u961f\u548c\u51fa\u961f\u7684\u64cd\u4f5c\uff0c\u961f\u5217\u4e2d\u7684\u5143\u7d20\u603b\u662f\u7ef4\u6301\u5728[out,in)\u8fd9\u4e2a\u533a\u95f4\u4e2d\uff0c\u7531\u4e8e\u6ea2\u51fa\u53ef\u80fd\u5b58\u5728\uff0c\u8fd9\u4e2a\u533a\u95f4\u6709\u4e09\u79cd\u60c5\u51b5\uff1a<\/p>\n<ul>\n<li>out\u6ca1\u6ea2\u51fa\uff0cin\u6ca1\u6ea2\u51fa\uff0cin-out\u5c31\u662f\u8fd9\u4e2a\u7f13\u51b2\u533a\u4e2d\u6570\u636e\u7684\u957f\u5ea6\u3002<\/li>\n<li>out\u6ca1\u6ea2\u51fa\uff0cin\u6ea2\u51fa\uff0c\u6b64\u65f6\u6570\u636e\u957f\u5ea6\u5e94\u8be5\u662fMAX_UNSIGNED_INT &#8211; out +1 + in = in &#8211; out +\u00a0MAX_UNSIGNED_INT +1 = in-out\u3002<\/li>\n<li>out\u6ea2\u51fa\uff0cin\u6ea2\u51fa\uff0c\u6b64\u65f6\u6570\u636e\u957f\u5ea6\u4e5f\u662fin-out\u3002<\/li>\n<\/ul>\n<p>\u6839\u636e\u4e0a\u9762\u4e09\u79cd\u60c5\u51b5\uff0cin-out\u603b\u662f\u8868\u793a\u73af\u5f62\u961f\u5217\u4e2d\u6570\u636e\u7684\u957f\u5ea6<\/p>\n<p>\u4e0d\u5f97\u4e0d\u60ca\u53f9\uff0clinux\u5185\u6838\u4e2d\u7684kfifo\u5b9e\u73b0\u5b9e\u5728\u662f\u592a\u7cbe\u5999\u4e86\u3002\u76f8\u6bd4\u524d\u9762\u7684\u7248\u672c\uff0c\u6240\u6709\u7684\u53d6\u4f59\u64cd\u4f5c\u90fd\u6539\u6210\u4e86\u4e0e\u8fd0\u7b97\uff0c\u5165\u961f\u51fa\u961f\uff0c\u6c42\u7f13\u51b2\u533a\u6570\u636e\u957f\u5ea6\u90fd\u53d8\u5f97\u975e\u5e38\u7b80\u5355\u3002<\/p>\n<h2>1.3\u3001\u94fe\u8868\u5b9e\u73b0\u7684\u73af\u5f62\u7f13\u51b2\u533a<\/h2>\n<p>\u73af\u5f62\u7f13\u51b2\u533a\u7684\u94fe\u8868\u5b9e\u73b0\u6bd4\u6570\u7ec4\u5b9e\u73b0\u8981\u7b80\u5355\u4e00\u4e9b\uff0c\u53ef\u4ee5\u7528\u4e0b\u56fe\u7684\u8fd9\u79cd\u8bbe\u8ba1\u65b9\u6848\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/images2015.cnblogs.com\/blog\/733402\/201601\/733402-20160119093855734-995643357.png\" alt=\"\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>\u5047\u8bbe\u8981\u6c42\u73af\u5f62\u7f13\u51b2\u533a\u5927\u5c0f\u4e3aN<\/p>\n<ul>\n<li>\u961f\u5217\u957f\u5ea6\uff1a\u53ef\u4ee5\u8bbe\u8ba1\u4e00\u4e2asize\u7684\u6210\u5458\uff0c\u6bcf\u6b21O(1)\u53d6size\uff0c\u4e5f\u53ef\u4ee5O(N)\u904d\u5386\u961f\u5217\u6c42size<\/li>\n<li>\u961f\u5217\u7a7a\uff1ahead-&gt;next == NULL<\/li>\n<li>\u961f\u5217\u6ee1\uff1asize == N<\/li>\n<li>\u51fa\u961f\u6838\u5fc3<br \/>\nret \u00a0= \u00a0out;<br \/>\nout \u00a0= \u00a0out-&gt;next;<br \/>\nhead-&gt;next = out;<\/li>\n<li>\u5165\u961f\u6838\u5fc3new_node\u8868\u793a\u65b0\u7533\u8bf7\u7684\u7ed3\u70b9<br \/>\nnew_node-&gt;next = in-&gt;next;<br \/>\nin-&gt;next = in_node;<br \/>\n++size;<\/li>\n<\/ul>\n<p>\u5f53\u7136\uff0c\u94fe\u8868\u7ed3\u70b9\u7684\u8bbe\u5b9a\u662f\u81ea\u7531\u7684\uff0c\u94fe\u8868\u7ed3\u70b9\u672c\u8eab\u53ef\u4ee5\u5185\u542b\u6570\u7ec4\u3001\u94fe\u8868\u3001\u54c8\u5e0c\u8868\u7b49\u7b49\uff0c\u4f8b\u5982\u4e0b\u9762\u8fd9\u6837\uff0c\u5185\u542b\u4e00\u4e2a\u6570\u7ec4<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/images2015.cnblogs.com\/blog\/733402\/201601\/733402-20160119100421859-1940914834.png\" alt=\"\" \/><\/p>\n<p>\u8fd9\u65f6\uff0c\u53ef\u4ee5\u589e\u8bbe\u4e24\u4e2a\u53d8\u91cfout_pos\uff0cin_pos\u3002\u5047\u8bbe\u7ed3\u70b9\u5185\u6570\u7ec4\u7684\u5927\u5c0f\u4e3aN_ELEMS\uff0c\u6574\u4e2a\u94fe\u8868\u7ed3\u70b9\u7684\u6570\u91cf\u4e3anode_nums<\/p>\n<ul>\n<li>\u961f\u5217\u957f\u5ea6\uff1a(nodes_nums-2)*N+N-out_pos+in_pos<\/li>\n<li>\u961f\u5217\u7a7a\uff1ahead-&gt;next == NULL<\/li>\n<li>\u961f\u5217\u6ee1\uff1a\u961f\u5217\u957f\u5ea6\u00a0== \u00a0N<\/li>\n<li>\u51fa\u961f\u6838\u5fc3<br \/>\nout_pos == N_ELEMS;<br \/>\ndelete_node = out;<br \/>\nfree(delete_node);<br \/>\nout \u00a0= \u00a0out-&gt;next;<br \/>\nout_pos = 0;<br \/>\nhead-&gt;next = out;<br \/>\nret = out[out_pos++];<\/li>\n<li>\u5165\u961f\u6838\u5fc3\uff0cnew_node\u8868\u793a\u65b0\u7533\u8bf7\u7684\u6838\u5fc3<br \/>\nin_pos == N_ELEMS;<br \/>\nnew_node-&gt;next = in-&gt;next;<br \/>\nin = new_node;<br \/>\nin_pos = 0;<br \/>\nin[in_pos++] = value;<\/li>\n<\/ul>\n<h2>1.4\u3001\u6539\u8fdb\u94fe\u8868\u73af\u5f62\u7f13\u51b2\u533a<\/h2>\n<p>\u4e0a\u9762\u94fe\u8868\u73af\u5f62\u961f\u5217\u51fa\u961f\u5217\u53ef\u80fd\u91ca\u653e\u5185\u5b58\uff0c\u5165\u961f\u5217\u53ef\u80fd\u7533\u8bf7\u5185\u5b58\uff0c\u6240\u4ee5\uff0c\u53ef\u4ee5\u7528\u4e2a\u7a7a\u95f2\u94fe\u8868\u628a\u8be5\u91ca\u653e\u7684\u5185\u5b58\u7ba1\u7406\u8d77\u6765\uff0c\u5165\u961f\u5217\u65f6\uff0c\u5982\u679c\u8981\u589e\u52a0\u7ed3\u70b9\uff0c\u5148\u4ece\u7a7a\u95f2\u94fe\u8868\u4e2d\u53d6\u7ed3\u70b9\uff0c\u53d6\u4e0d\u5230\u518d\u53bb\u7533\u8bf7\u5185\u5b58\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u907f\u514d\u591a\u6b21\u5206\u914d\u91ca\u653e\u5185\u5b58\u4e86\uff0c\u81f3\u4e8e\u5176\u4ed6\u7684\u64cd\u4f5c\u90fd\u662f\u4e00\u6837\u7684\u3002<\/p>\n<p>\u4e0a\u8fb9\u53ea\u662f\u7b80\u5355\u7684\u8bf4\u4e86\u4e0b\u5165\u961f\u51fa\u961f\u7b49\u64cd\u4f5c\uff0c\u4e8b\u5b9e\u4e0a\uff0c\u7f13\u51b2\u533a\u5f80\u5f80\u662f\u548c\u8bfb\u5199\u7ebf\u7a0b\u4f34\u968f\u51fa\u73b0 \u7684\uff0c\u7f13\u51b2\u533a\u4e2d\u7684\u6bcf\u4e00\u4e2a\u8d44\u6e90\uff0c\u5bf9\u4e8e\u540c\u7c7b\u7ebf\u7a0b\u53ef\u80fd\u9700\u8981\u4e92\u65a5\u8bbf\u95ee\uff0c\u4e5f\u53ef\u80fd\u53ef\u4ee5\u5171\u4eab\u4f7f\u7528\uff0c\u800c\u4e0d\u540c\u7c7b\u7ebf\u7a0b\u95f4\uff08\u8bfb\u5199\u7ebf\u7a0b\uff09\u5f80\u5f80\u9700\u8981\u505a\u540c\u6b65\u64cd\u4f5c\u3002\u6bd4\u5982\uff0c\u8bfb\u7ebf\u7a0b\u4e4b\u95f4\u53ef\u80fd\u5171 \u4eab\u7f13\u51b2\u533a\u7684\u6bcf\u4e00\u4e2a\u8d44\u6e90\uff0c\u4e5f\u53ef\u80fd\u4e92\u65a5\u4f7f\u7528\u6bcf\u4e2a\u8d44\u6e90\uff0c\u901a\u5e38\uff0c\u5728\u7f13\u51b2\u533a\u6ee1\u65f6\u5199\u7ebf\u7a0b\u4e0d\u80fd\u5199\uff0c\u7f13\u51b2\u533a\u7a7a\u65f6\u8bfb\u7ebf\u7a0b\u4e0d\u80fd\u8bfb\uff0c\u4e5f\u5c31\u662f\u8bfb\u5199\u7ebf\u7a0b\u8981\u6c42\u540c\u6b65\u3002\u8fd9\u5176\u5b9e\u5c31\u662f\u64cd\u4f5c\u7cfb\u7edf \u8bfe\u7a0b\u4e0aPV\u64cd\u4f5c\u7684\u51e0\u4e2a\u7ecf\u5178\u6a21\u5f0f\uff0c\u5982\u679c\u8bfb\u8bfb\u4e4b\u95f4\u3001\u5199\u5199\u4e4b\u95f4\u8981\u6c42\u4e92\u65a5\u4f7f\u7528\u8d44\u6e90\uff0c\u5e76\u4e14\u8bfb\u5199\u7ebf\u7a0b\u95f4\u4e0d\u8981\u6c42\u4e92\u65a5\uff0c\u5c31\u662f\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u95ee\u9898\uff0c\u5982\u679c\u8bfb\u8bfb\u4e4b\u95f4\u4e0d\u8981\u6c42\u4e92\u65a5(\u6bcf \u4e2a\u8d44\u6e90\u53ef\u4f9b\u591a\u4e2a\u8bfb\u7ebf\u7a0b\u5171\u540c\u4f7f\u7528)\uff0c\u5199\u5199\u4e4b\u95f4\u8981\u6c42\u4e92\u65a5\uff08\u6bcf\u4e2a\u8d44\u6e90\u4ec5\u4f9b\u4e00\u4e2a\u5199\u7ebf\u7a0b\u4f7f\u7528\uff09\uff0c\u5e76\u4e14\u8bfb\u5199\u7ebf\u7a0b\u4e5f\u8981\u6c42\u4e92\u65a5\uff08\u8bfb\u7684\u65f6\u5019\u4e0d\u80fd\u5199\uff0c\u5199\u7684\u65f6\u5019\u4e0d\u80fd\u8bfb\uff09\uff0c\u5c31\u662f\u8bfb \u5199\u8005\u95ee\u9898\u3002<\/p>\n<p>\u4e0b\u9762\u4f1a\u4ee5\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u6a21\u5f0f\u548c1.2\u8282\u6539\u8fdb\u7248\u7684\u5faa\u73af\u7f13\u51b2\u533a\u4e3a\u4f8b\uff0c\u6765\u8bf4\u8bf4\u5e76\u53d1\u5faa\u73af\u961f\u5217\u6709\u9501\u5b9e\u73b0\uff0c\u4e0b\u4e00\u7bc7\u8bf4\u65e0\u9501\u5b9e\u73b0\u3002\u5173\u4e8e\u8bfb\u5199\u8005\u7684\u95ee\u9898\uff0c\u4ee5\u540e\u6709\u65f6\u95f4\u518d\u8be6\u8c08\u3002<\/p>\n<h1>2\u3001\u751f\u4ea7\u8005\u6d88\u8d39\u8005<\/h1>\n<p>\u5148\u63d0\u4e00\u5634\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u7684\u4f18\u70b9\u5427<\/p>\n<ul>\n<li>\u5e76\u53d1\uff0c\u82e5\u7f13\u51b2\u533a\u4e2d\u6570\u636e\u5904\u7406\u65b9\u5f0f\u4e00\u81f4\uff0c\u53ef\u4ee5\u5f00\u591a\u4e2a\u7ebf\u7a0b\u6216\u8fdb\u7a0b\u5904\u7406\u6570\u636e\u6216\u751f\u4ea7\u6570\u636e<\/li>\n<li>\u5f02\u6b65\uff0c\u751f\u4ea7\u8005\u65e0\u9700\u5e72\u7b49\u7740\u6d88\u8d39\u8005\u6d88\u8d39\u6570\u636e\uff0c\u6d88\u8d39\u8005\u4e5f\u65e0\u9700\u5e72\u7b49\u7740\u751f\u4ea7\u8005\u751f\u4ea7\u6570\u636e\uff0c\u53ea\u9700\u6839\u636e\u7f13\u51b2\u533a\u7684\u72b6\u6001\u505a\u51fa\u76f8\u5e94\u53cd\u5e94\uff0c\u5982\u679c\u7ed3\u5408io\u591a\u7528\u590d\u7528\u6280\u672f\uff0c\u4e5f\u5c31\u662f\u6240\u8c13\u7684\u53cd\u5e94\u5668\u6a21\u5f0f\uff0c\u53ef\u4ee5\u8bbe\u8ba1\u5f88\u597d\u7684\u5f02\u6b65\u901a\u4fe1\u67b6\u6784\uff0c\u50cf<a href=\"http:\/\/www.cnblogs.com\/zengzy\/p\/5132437.html\" target=\"_blank\" rel=\"noopener\">zeromq\u5e95\u5c42\u7684\u7ebf\u7a0b\u901a\u4fe1<\/a>\u5c31\u662f\u4f7f\u7528\u8fd9\u79cd\u65b9\u6848\u6765\u505a\u7684\u3002<\/li>\n<li>\u89e3\u8026\uff0c\u89e3\u8026\u53ef\u4ee5\u8bf4\u662f\u4e00\u4e2a\u9644\u5e26\u4f5c\u7528\uff0c\u7531\u4e8e\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u65e0\u76f4\u63a5\u5173\u8054\uff0c\u4e5f\u5c31\u662f\u751f\u4ea7\u8005\u4e2d\u4e0d\u4f1a\u53bb\u8c03\u7528\u4efb\u4f55\u6d88\u8d39\u8005\u7684\u65b9\u6cd5\u6216\u8005\u53cd\u8fc7\u6765\uff0c\u6240\u4ee5\u4efb\u4f55\u4e00\u65b9\u7684\u53d8\u52a8\u4e0d\u5f71\u54cd\u53e6\u4e00\u65b9\u3002<\/li>\n<li>\u7f13\u51b2\uff0c\u4e3b\u8981\u662f\u4fdd\u6301\u5404\u81ea\u7684\u6027\u80fd\uff0c\u6bd4\u5982\u751f\u4ea7\u8005\u5f88\u5feb\uff0c\u90a3\u6ca1\u5173\u7cfb\uff0c\u6d88\u8d39\u8005\u867d\u7136\u6d88\u8d39\u4e0d\u8fc7\u6765\uff0c\u4f46\u53ef\u4ee5\u628a\u6570\u636e\u653e\u7f13\u51b2\u533a\u91cc\u3002<\/li>\n<\/ul>\n<p>\u73b0\u5728\u6b63\u5f0f\u5f00\u5de5\uff0c\u6839\u636e\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7684\u6570\u91cf\uff0c\u53ef\u4ee5\u628a\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u5212\u5206\u4e3a\u56db\u79cd\u7c7b\u578b\uff0c1:1,1:N\uff0cM:1\uff0cM:N\u3002<\/p>\n<p><strong>\u7136\u540e\u518d\u505a\u4e2a\u89c4\u5b9a\uff0c\u89c4\u5b9a\u73af\u5f62\u7f13\u51b2\u533a\u7684\u5927\u5c0f\u4e3aM,M\u4e3a2\u7684\u5e42\u6b21\u65b9\uff0cin\u3001out\u7edf\u4e00\u79f0\u4e3aslot\u3002<\/strong><\/p>\n<h2>2.1\u3001\u5355\u751f\u4ea7\u8005\u5355\u6d88\u8d39\u8005<\/h2>\n<p>\u4e00\u4e2a\u751f\u4ea7\u8005\uff0c\u4e00\u4e2a\u6d88\u8d39\u8005\uff0c\u7f13\u51b2\u533a\u53ef\u7528\u8d44\u6e90\u6570\u4e3aM\u3002<\/p>\n<p>\u8fd9\u79cd\u60c5\u51b5\u53ea\u8981\u540c\u6b65\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\uff0c\u540c\u6b65\u7684\u65b9\u6cd5\u662f\u7528\u4e24\u4e2a\u4fe1\u53f7\u91cfavailable_in_slots,available_out_slots\u5206\u522b\u8868\u793a\u751f\u4ea7\u8005\u6709\u591a\u4e2a\u53ef\u7528\u8d44\u6e90\u3001\u6d88\u8d39\u8005\u6709\u591a\u4e2a\u53ef\u7528\u8d44\u6e90\uff0c \u6bcf\u751f\u4ea7\u4e00\u4e2a\u4ea7\u54c1\uff0c\u751f\u4ea7\u8005\u53ef\u7528\u8d44\u6e90\u51cf1\uff0c\u6d88\u8d39\u8005\u53ef\u7528\u8d44\u6e90\u52a01\uff0c\u8fd9\u70b9\u53ef\u7528PV\u64cd\u4f5c\u6765\u5b9e\u73b0\uff0c\u7528P\u64cd\u4f5c\u53ef\u4ee5\u6d88\u80171\u4e2a\u8d44\u6e90\uff0cP\u64cd\u4f5c\u7ed3\u675f\u8d44\u6e90\u6570\u51cf1\uff0cV\u64cd\u4f5c\u53ef\u4ee5\u751f\u4ea71 \u4e2a\u8d44\u6e90\uff0cV\u64cd\u4f5c\u7ed3\u675f\u540e\u8d44\u6e90\u6570\u52a01\u3002\u521d\u59cb\u65f6\uff0cavailable_in_slots=M\uff0c\u8868\u793a\u751f\u4ea7\u8005\u6709M\u4e2a\u7a7a\u95f4\u53ef\u653e\u4ea7 \u54c1\uff0cavailable_out_slots=0\uff0c\u8868\u793a\u6d88\u8d39\u8005\u8fd8\u6ca1\u6709\u53ef\u7528\u8d44\u6e90\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"null\">available_in_slots = M;\r\navailable_out_slots  = 0;\r\n\r\nin=out=0;\r\n\r\nvoid producer()\r\n{\r\n    while(true){\r\n        P(available_in_slots);\r\n        queue[(in++)&amp;(M-1)] = data;\r\n        V(available_out_slots)\r\n    }\r\n}\r\n\r\nvoid consumer()\r\n{\r\n    while(true){\r\n        P(available_out_slots);\r\n        queue[(out++)&amp;(M-1)] = data;\r\n        V(available_in_slots)\r\n    }\r\n}<\/pre>\n<p>&nbsp;<\/p>\n<h2>2.2\u3001\u5355\u751f\u4ea7\u8005\u591a\u6d88\u8d39\u8005<\/h2>\n<p>\u4e00\u4e2a\u751f\u4ea7\u8005\uff0c\u591a\u4e2a\u6d88\u8d39\u8005\uff0c\u7f13\u51b2\u533a\u53ef\u7528\u8d44\u6e90\u6570\u4f4dM\u3002<\/p>\n<p>\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6d88\u8d39\u8005\u6709\u591a\u4e2a\uff0c\u6d88\u8d39\u8005\u4e4b\u95f4\u5bf9out slot\u8981\u4e92\u65a5\u8bbf\u95ee\uff0c\u7528out_slot_mutex\u6765\u5b9e\u73b0\u6d88\u8d39\u8005\u95f4\u7684\u4e92\u65a5\uff0c\u62ff\u5230out_slot_mutex\u7684\u6d88\u8d39\u8005\u7ebf\u7a0b\u624d\u5f97\u4ee5\u7ee7\u7eed\u6267\u884c\uff0c\u6ca1\u62ff\u5230\u7684\u53ea\u80fd \u963b\u585e\u3002\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u8981\u540c\u6b65\uff0c\u7528available_in_slots,available_out_slots\u6765\u5b9e\u73b0\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u7684\u540c\u6b65\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u3000\u3000\u3000\u3000\u8be6\u7ec6\u5185\u5bb9\u770b\u539f\u6587\u8fde\u63a5\u3002<\/strong><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u4f5c\u8005\uff1a\u66fe\u5fd7\u4f18 \u51fa\u5904\uff1a\u00a0http:\/\/ww<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[119],"class_list":["post-2652","post","type-post","status-publish","format-standard","hentry","tag-03-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/2652","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=2652"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/2652\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=2652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=2652"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=2652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}