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| 42 | #include <malloc.h> |
42 | #include <malloc.h> |
| 43 | 43 | ||
| 44 | typedef unsigned long fifo_count_t; |
44 | typedef unsigned long fifo_count_t; |
| 45 | typedef unsigned long fifo_index_t; |
45 | typedef unsigned long fifo_index_t; |
| 46 | 46 | ||
| - | 47 | #define FIFO_CREATE_STATIC(name, t, itms) \ |
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| - | 48 | struct { \ |
|
| - | 49 | t fifo[(itms)]; \ |
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| - | 50 | fifo_count_t items; \ |
|
| - | 51 | fifo_index_t head; \ |
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| - | 52 | fifo_index_t tail; \ |
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| - | 53 | } name |
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| - | 54 | ||
| 47 | /** Create and initialize static FIFO. |
55 | /** Create and initialize static FIFO. |
| 48 | * |
56 | * |
| 49 | * FIFO is allocated statically. |
57 | * FIFO is allocated statically. |
| 50 | * This macro is suitable for creating smaller FIFOs. |
58 | * This macro is suitable for creating smaller FIFOs. |
| 51 | * |
59 | * |
| 52 | * @param name Name of FIFO. |
60 | * @param name Name of FIFO. |
| 53 | * @param t Type of values stored in FIFO. |
61 | * @param t Type of values stored in FIFO. |
| 54 | * @param itms Number of items that can be stored in FIFO. |
62 | * @param itms Number of items that can be stored in FIFO. |
| 55 | */ |
63 | */ |
| 56 | #define FIFO_INITIALIZE_STATIC(name, t, itms) \ |
64 | #define FIFO_INITIALIZE_STATIC(name, t, itms) \ |
| 57 | struct { \ |
- | |
| 58 | t fifo[(itms)]; \ |
- | |
| 59 | fifo_count_t items; \ |
65 | FIFO_CREATE_STATIC(name, t, itms) = { \ |
| 60 | fifo_index_t head; \ |
- | |
| 61 | fifo_index_t tail; \ |
- | |
| 62 | } name = { \ |
- | |
| 63 | .items = (itms), \ |
66 | .items = (itms), \ |
| 64 | .head = 0, \ |
67 | .head = 0, \ |
| 65 | .tail = 0 \ |
68 | .tail = 0 \ |
| 66 | } |
69 | } |
| 67 | 70 | ||