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3
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1 #include <stdio.h>
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5
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2 #include <stdlib.h>
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3
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3 #include "MailManager.h"
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4
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5 int
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6 MailManager::init_pool_mailQueue(int num)
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7 {
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8 if (!mailQueuePool) {
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9 return extend_pool_mailQueue(num);
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10 }
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11 return 0;
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12 }
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13
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14 int
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15 MailManager::extend_pool_mailQueue(int num)
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16 {
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17 MailQueuePtr q;
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18
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5
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19 //q = new MailQueue[num+1];
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20 q = (MailQueuePtr)malloc(sizeof(MailQueue)*(num+1));
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3
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21
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22 if (q == NULL) {
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23 return -1;
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24 }
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25 q->next = mailQueuePool;
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26 mailQueuePool = q;
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27
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28 /* Connect all free queue in the pool */
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29 q = mailQueuePool + 1;
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30 for (q = mailQueuePool + 1; num-- > 0; q++) {
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31 q->next = q + 1;
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32 }
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33 q->next = freeMailQueue;
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34 freeMailQueue = mailQueuePool + 1;
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35
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36 return 0;
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37 }
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38
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39 MailQueuePtr
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40 MailManager::create_mail(unsigned int data)
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41 {
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42 return get_free_mailQueue(data);
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43 }
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44
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45 MailQueuePtr
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46 MailManager::get_free_mailQueue(unsigned int data)
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47 {
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48 MailQueuePtr q;
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49
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50 if (!freeMailQueue) {
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51 extend_pool_mailQueue(30);
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52 }
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53 q = freeMailQueue;
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54 freeMailQueue = freeMailQueue->next;
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55
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56 q->data = data;
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57 q->next = NULL;
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58
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59 return q;
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60 }
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61
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62 void
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63 MailManager::free_mailQueue(MailQueuePtr q)
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64 {
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65 q->next = freeMailQueue;
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66 freeMailQueue = q;
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67 }
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68
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69
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70 MailQueuePtr
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71 append_mailQueue(MailQueuePtr list, MailQueuePtr q)
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72 {
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73 MailQueuePtr p = list;
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74
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75 if (p == NULL) {
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76 return q;
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77 } else {
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78 while(p->next) p = p->next;
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79 p->next = q;
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80 return list;
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81 }
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82 }
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