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ZealOS/docs/Demo/MultiCore/Primes.CC.html
TomAwezome 293db76ddb Update documentation.
2021-10-27 03:28:16 -04:00

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<pre style="font-family:monospace;font-size:12pt">
<a name="l1"></a><span class=cF1>U8</span><span class=cF0> *master_bitmap;
<a name="l2"></a></span><span class=cF9>I64</span><span class=cF0> prime_range, my_mp_count, pending;
<a name="l3"></a>
<a name="l4"></a></span><span class=cF1>U0</span><span class=cF0> PrimesJob(</span><span class=cF9>I64</span><span class=cF0> i)
<a name="l5"></a>{
<a name="l6"></a> </span><span class=cF9>I64</span><span class=cF0> j, k, l = </span><span class=cF5>Sqrt</span><span class=cF0>(prime_range),
<a name="l7"></a> lo = i * prime_range / my_mp_count,
<a name="l8"></a> hi = (i + </span><span class=cFE>1</span><span class=cF0>) * prime_range / my_mp_count,
<a name="l9"></a> lo2 = lo + </span><span class=cFB>sys_cache_line_width</span><span class=cF0>,
<a name="l10"></a> hi2 = hi - </span><span class=cFB>sys_cache_line_width</span><span class=cF0>;
<a name="l11"></a>
<a name="l12"></a> </span><span class=cF1>if</span><span class=cF0> (lo2 &gt; hi2)
<a name="l13"></a> lo2 = hi2;
<a name="l14"></a> </span><span class=cF1>for</span><span class=cF0> (j = </span><span class=cFE>2</span><span class=cF0>; j &lt;= l; j++)
<a name="l15"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l16"></a> </span><span class=cF1>if</span><span class=cF0> (!</span><span class=cF5>Bt</span><span class=cF7>(</span><span class=cF0>master_bitmap, j</span><span class=cF7>)</span><span class=cF0>)
<a name="l17"></a> {
<a name="l18"></a> </span><span class=cF1>if</span><span class=cF0> (j &gt;= lo)
<a name="l19"></a> k = j + j;
<a name="l20"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l21"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l22"></a> k = lo - lo % j;
<a name="l23"></a> </span><span class=cF1>if</span><span class=cF0> (k &lt; lo)
<a name="l24"></a> k += j;
<a name="l25"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l26"></a> </span><span class=cF1>while</span><span class=cF0> (k &lt; lo2)
<a name="l27"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l28"></a> </span><span class=cF5>LBts</span><span class=cF0>(master_bitmap, k);
<a name="l29"></a> k += j;
<a name="l30"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l31"></a> </span><span class=cF1>while</span><span class=cF0> (k &lt; hi2)
<a name="l32"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l33"></a> </span><span class=cF5>Bts</span><span class=cF0>(master_bitmap, k);
<a name="l34"></a> k += j;
<a name="l35"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l36"></a> </span><span class=cF1>while</span><span class=cF0> (k &lt; hi)
<a name="l37"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l38"></a> </span><span class=cF5>LBts</span><span class=cF0>(master_bitmap, k);
<a name="l39"></a> k += j;
<a name="l40"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l41"></a> }
<a name="l42"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l43"></a> </span><span class=cF1>lock</span><span class=cF0> pending--;
<a name="l44"></a>}
<a name="l45"></a>
<a name="l46"></a></span><span class=cF9>I64</span><span class=cF0> Primes(</span><span class=cF9>I64</span><span class=cF0> range, </span><span class=cF9>I64</span><span class=cF0> _my_mp_count)
<a name="l47"></a>{
<a name="l48"></a> </span><span class=cF9>I64</span><span class=cF0> i, prime_count = </span><span class=cFE>0</span><span class=cF0>;
<a name="l49"></a> </span><span class=cF1>F64</span><span class=cF0> t0 = </span><span class=cF5>tS</span><span class=cF0>, tf;
<a name="l50"></a>
<a name="l51"></a> prime_range = range;
<a name="l52"></a> </span><span class=cF1>if</span><span class=cF0> (_my_mp_count &lt;= </span><span class=cFB>mp_count</span><span class=cF0>)
<a name="l53"></a> my_mp_count = _my_mp_count;
<a name="l54"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l55"></a> my_mp_count = </span><span class=cFB>mp_count</span><span class=cF0>;
<a name="l56"></a> master_bitmap = </span><span class=cF5>CAlloc</span><span class=cF0>(</span><span class=cF7>(</span><span class=cF0>prime_range + </span><span class=cFE>7</span><span class=cF7>)</span><span class=cF0> / </span><span class=cFE>8</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0>);
<a name="l57"></a> </span><span class=cF5>Bts</span><span class=cF0>(master_bitmap, </span><span class=cFE>0</span><span class=cF0>);
<a name="l58"></a> </span><span class=cF5>Bts</span><span class=cF0>(master_bitmap, </span><span class=cFE>1</span><span class=cF0>);
<a name="l59"></a> pending = my_mp_count;
<a name="l60"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; my_mp_count; i++)
<a name="l61"></a> </span><span class=cF5>JobQueue</span><span class=cF0>(&amp;PrimesJob, i, i);
<a name="l62"></a> </span><span class=cF1>while</span><span class=cF0> (pending)
<a name="l63"></a> </span><span class=cF5>Yield</span><span class=cF0>;
<a name="l64"></a> tf = </span><span class=cF5>tS</span><span class=cF0>;
<a name="l65"></a>
<a name="l66"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; prime_range; i++)
<a name="l67"></a> </span><span class=cF1>if</span><span class=cF0> (!</span><span class=cF5>Bt</span><span class=cF7>(</span><span class=cF0>master_bitmap, i</span><span class=cF7>)</span><span class=cF0>)
<a name="l68"></a> prime_count++;
<a name="l69"></a>
<a name="l70"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cF5>MaxI64</span><span class=cF7>(</span><span class=cF0>prime_range - </span><span class=cFE>100</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF7>)</span><span class=cF0>; i &lt; prime_range; i++)
<a name="l71"></a> </span><span class=cF1>if</span><span class=cF0> (!</span><span class=cF5>Bt</span><span class=cF7>(</span><span class=cF0>master_bitmap, i</span><span class=cF7>)</span><span class=cF0>)
<a name="l72"></a> </span><span class=cF6>&quot;%d &quot;</span><span class=cF0>, i;
<a name="l73"></a>
<a name="l74"></a> </span><span class=cF6>&quot;\n$RED$CPUs:%d PrimeRange:%,d PrimeCount:%,d Time:%9.7,f$FG$\n&quot;</span><span class=cF0>, my_mp_count, prime_range, prime_count, tf - t0;
<a name="l75"></a>
<a name="l76"></a> </span><span class=cF5>Free</span><span class=cF0>(master_bitmap);
<a name="l77"></a> </span><span class=cF1>return</span><span class=cF0> prime_count;
<a name="l78"></a>}
<a name="l79"></a>
<a name="l80"></a>Primes(</span><span class=cFE>100</span><span class=cF0>, </span><span class=cFE>1</span><span class=cF0>);
<a name="l81"></a>Primes(</span><span class=cFE>100</span><span class=cF0>, </span><span class=cFB>mp_count</span><span class=cF0>);
<a name="l82"></a>Primes(</span><span class=cFE>1000000</span><span class=cF0>, </span><span class=cFE>1</span><span class=cF0>);
<a name="l83"></a>Primes(</span><span class=cFE>1000000</span><span class=cF0>, </span><span class=cFB>mp_count</span><span class=cF0>);
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