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10 | ;; GNU GENERAL PUBLIC LICENSE ;; |
10 | ;; GNU GENERAL PUBLIC LICENSE ;; |
11 | ;; Version 2, June 1991 ;; |
11 | ;; Version 2, June 1991 ;; |
12 | ;; ;; |
12 | ;; ;; |
13 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
13 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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14 | 14 | ||
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15 | $Revision: 3555 $ |
15 | $Revision: 3725 $ |
16 | 16 | ||
17 | ; The Queues implemented by these macros form a ring-buffer. |
17 | ; The Queues implemented by these macros form a ring-buffer. |
18 | ; The data to these queue's always looks like this: |
18 | ; The data to these queue's always looks like this: |
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26 | struct queue |
26 | struct queue |
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27 | 27 | ||
28 | size dd ? ; number of queued packets in this queue |
28 | size dd ? ; number of queued packets in this queue |
29 | w_ptr dd ? ; current writing pointer in queue |
29 | w_ptr dd ? ; current writing pointer in queue |
- | 30 | r_ptr dd ? ; current reading pointer |
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30 | r_ptr dd ? ; current reading pointer |
31 | mutex MUTEX |
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31 | 32 | ||
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42 | ; get_from_queue on the other hand will return a pointer in esi, to the entry you're interessed in |
43 | ; get_from_queue on the other hand will return a pointer in esi, to the entry you're interessed in |
43 | ; PS: macros WILL destroy ecx and edi |
44 | ; PS: macros WILL destroy ecx and edi |
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44 | 45 | ||
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- | 46 | macro add_to_queue ptr, size, entry_size, failaddr { |
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- | 47 | ||
- | 48 | local .ok, .no_wrap |
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- | 49 | ||
- | 50 | pusha |
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- | 51 | lea ecx, [ptr + queue.mutex] |
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- | 52 | call mutex_lock |
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45 | macro add_to_queue ptr, size, entry_size, failaddr { |
53 | popa |
- | 54 | ||
- | 55 | cmp [ptr + queue.size], size ; Check if queue isnt full |
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- | 56 | jb .ok |
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- | 57 | ||
- | 58 | pusha |
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- | 59 | lea ecx, [ptr + queue.mutex] |
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46 | 60 | call mutex_unlock |
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- | 61 | popa |
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47 | cmp [ptr + queue.size], size ; Check if queue isnt full |
62 | jmp failaddr |
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48 | jae failaddr |
63 | |
49 | 64 | .ok: |
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50 | inc [ptr + queue.size] ; if not full, queue one more |
65 | inc [ptr + queue.size] ; if not full, queue one more |
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56 | lea ecx, [size*entry_size+ptr+sizeof.queue] |
71 | lea ecx, [size*entry_size+ptr+sizeof.queue] |
57 | cmp edi, ecx ; entry size |
72 | cmp edi, ecx ; entry size |
58 | jb .no_wrap |
73 | jb .no_wrap |
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59 | 74 | ||
60 | sub edi, size*entry_size |
- | |
61 | 75 | sub edi, size*entry_size |
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62 | .no_wrap: |
76 | .no_wrap: |
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- | 77 | mov [ptr + queue.w_ptr], edi |
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- | 78 | ||
- | 79 | pusha |
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- | 80 | lea ecx, [ptr + queue.mutex] |
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- | 81 | call mutex_unlock |
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63 | mov [ptr + queue.w_ptr], edi |
82 | popa |
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64 | 83 | ||
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- | 84 | } |
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- | 85 | ||
- | 86 | ||
- | 87 | ||
- | 88 | macro get_from_queue ptr, size, entry_size, failaddr { |
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- | 89 | ||
- | 90 | local .ok, .no_wrap |
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65 | } |
91 | |
- | 92 | pusha |
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- | 93 | lea ecx, [ptr + queue.mutex] |
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- | 94 | call mutex_lock |
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- | 95 | popa |
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- | 96 | ||
- | 97 | cmp [ptr + queue.size], 0 ; any packets queued? |
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66 | 98 | ja .ok |
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- | 99 | ||
67 | 100 | pusha |
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Line 68... | Line 101... | ||
68 | 101 | lea ecx, [ptr + queue.mutex] |
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69 | macro get_from_queue ptr, size, entry_size, failaddr { |
102 | call mutex_unlock |
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87 | .no_wrap: |
120 | .no_wrap: |
88 | mov dword [ptr + queue.r_ptr], esi |
121 | mov dword [ptr + queue.r_ptr], esi |
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89 | 122 | ||
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- | 123 | pop esi |
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- | 124 | ||
- | 125 | pusha |
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- | 126 | lea ecx, [ptr + queue.mutex] |
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- | 127 | call mutex_unlock |
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90 | pop esi |
128 | popa |
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91 | 129 | ||
Line 92... | Line 130... | ||
92 | } |
130 | } |
93 | 131 | ||
94 | macro init_queue ptr { |
132 | macro init_queue ptr { |
95 | 133 | ||
- | 134 | mov [ptr + queue.size] , 0 |
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- | 135 | lea edi, [ptr + sizeof.queue] |
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- | 136 | mov [ptr + queue.w_ptr], edi |
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96 | mov [ptr + queue.size] , 0 |
137 | mov [ptr + queue.r_ptr], edi |
97 | lea edi, [ptr + sizeof.queue] |
138 |