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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include "TaskListInfo.h"
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4
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5 TaskListInfo::TaskListInfo(void)
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6 :taskListPool(NULL), freeTaskList(NULL) {}
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7
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8 TaskListInfo::~TaskListInfo(void) { destroy(); }
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9
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10 int
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11 TaskListInfo::init(int num)
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12 {
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13 if (taskListPool == NULL) {
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14 return extend_pool(num);
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15 }
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16 return 0;
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17 }
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18
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19 int
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20 TaskListInfo::extend_pool(int num)
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21 {
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22 TaskListPtr q = NULL;
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23
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24 q = (TaskListPtr)malloc(sizeof(TaskList)*(num+1));
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25
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26 if (q == NULL) {
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27 return -1;
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28 }
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29
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30 q->next = taskListPool;
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31 taskListPool = q;
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32
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33 /* Connect all free pack_list in the pool */
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34 for (q = taskListPool + 1; --num > 0; q++) {
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35 q->next = q + 1;
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36 }
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37 q->next = freeTaskList;
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38 freeTaskList = taskListPool + 1;
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39
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40 return 0;
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41 }
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42
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43 TaskListPtr
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44 TaskListInfo::create(void)
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45 {
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46 TaskListPtr q;
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47
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48 if (freeTaskList == NULL) {
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49 extend_pool(10);
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50 }
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51 q = freeTaskList;
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52 freeTaskList = freeTaskList->next;
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53
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54 q->length = 0;
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55 q->next = 0;
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56
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57 return q;
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58 }
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59
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60 void
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61 TaskListInfo::free(TaskListPtr q)
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62 {
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63 q->next = freeTaskList;
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64 freeTaskList = q;
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65 }
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66
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67 void
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68 TaskListInfo::destroy(void)
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69 {
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70 TaskListPtr q;
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71
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72 for (q = taskListPool; q; q = q->next) {
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73 free(q);
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74 }
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75 freeTaskList = taskListPool = NULL;
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76 }
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77
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78 TaskListPtr
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79 TaskListInfo::append(TaskListPtr list, TaskListPtr q)
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80 {
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81 TaskListPtr p = list;
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82
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83 if (!p) {
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84 return q;
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85 } else {
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86 while (p->next) p = p->next;
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87 p->next = q;
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88 return list;
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89 }
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90 }
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