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annotate druntime/src/compiler/dmd/qsort2.d @ 1458:e0b2d67cfe7c

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Added druntime (this should be removed once it works).
author Robert Clipsham <robert@octarineparrot.com>
date Tue, 02 Jun 2009 17:43:06 +0100
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1458
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1 /**
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2 * This is a public domain version of qsort.d. All it does is call C's
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3 * qsort(), but runs a little slower since it needs to synchronize a global
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4 * variable.
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5 *
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6 * Copyright: Copyright Digital Mars 2000 - 2009.
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7 * License: <a href="http://www.boost.org/LICENSE_1_0.txt>Boost License 1.0</a>.
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8 * Authors: Walter Bright
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9 *
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10 * Copyright Digital Mars 2000 - 2009.
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11 * Distributed under the Boost Software License, Version 1.0.
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12 * (See accompanying file LICENSE_1_0.txt or copy at
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13 * http://www.boost.org/LICENSE_1_0.txt)
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14 */
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15 module rt.qsort2;
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16
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17 //debug=qsort;
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18
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19 private import core.stdc.stdlib;
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20
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21 struct Array
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22 {
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23 size_t length;
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24 void* ptr;
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25 }
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26
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27 private TypeInfo tiglobal;
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28
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29 extern (C) int cmp(void* p1, void* p2)
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30 {
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31 return tiglobal.compare(p1, p2);
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32 }
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33
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34 extern (C) long _adSort(Array a, TypeInfo ti)
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35 {
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36 synchronized
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37 {
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38 tiglobal = ti;
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39 qsort(a.ptr, a.length, cast(size_t)ti.tsize(), &cmp);
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40 }
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41 return *cast(long*)(&a);
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42 }
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43
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44
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45
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46 unittest
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47 {
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48 debug(qsort) printf("array.sort.unittest()\n");
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49
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50 int a[] = new int[10];
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51
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52 a[0] = 23;
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53 a[1] = 1;
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54 a[2] = 64;
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55 a[3] = 5;
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56 a[4] = 6;
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57 a[5] = 5;
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58 a[6] = 17;
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59 a[7] = 3;
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60 a[8] = 0;
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61 a[9] = -1;
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62
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63 a.sort;
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64
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65 for (int i = 0; i < a.length - 1; i++)
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66 {
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67 //printf("i = %d", i);
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68 //printf(" %d %d\n", a[i], a[i + 1]);
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69 assert(a[i] <= a[i + 1]);
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70 }
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71 }