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1 | #ifndef _LTT_MARKERS_H |
2 | #define _LTT_MARKERS_H |
3 | |
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4 | /* |
5 | * Marker support header. |
6 | * |
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7 | * Mathieu Desnoyers, August 2007 |
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8 | * License: LGPL. |
9 | */ |
10 | |
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11 | #include <glib.h> |
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12 | #include <ltt/trace.h> |
13 | #include <ltt/compiler.h> |
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14 | #include <ltt/ltt-private.h> |
15 | |
16 | enum ltt_type { |
17 | LTT_TYPE_SIGNED_INT, |
18 | LTT_TYPE_UNSIGNED_INT, |
19 | LTT_TYPE_STRING, |
20 | LTT_TYPE_COMPACT, |
21 | LTT_TYPE_NONE, |
22 | }; |
23 | |
24 | #define LTT_ATTRIBUTE_COMPACT (1<<0) |
25 | #define LTT_ATTRIBUTE_NETWORK_BYTE_ORDER (1<<1) |
26 | |
27 | /* static ids 0-7 reserved for internal use. */ |
28 | #define MARKER_CORE_IDS 8 |
29 | /* dynamic ids 8-127 reserved for compact events. */ |
30 | #define MARKER_COMPACT_IDS 128 |
31 | |
32 | struct marker_info; |
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33 | |
34 | struct marker_info { |
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35 | GQuark name; |
36 | char *format; |
37 | long size; /* size if known statically, else -1 */ |
38 | GArray *fields; /* Array of struct marker_field */ |
39 | guint8 int_size, long_size, pointer_size, size_t_size, alignment; |
40 | struct marker_info *next; /* Linked list of markers with the same name */ |
41 | }; |
42 | |
43 | struct marker_field { |
44 | GQuark name; |
45 | enum ltt_type type; |
46 | unsigned long offset; /* offset in the event data */ |
47 | unsigned long size; |
48 | unsigned long alignment; |
49 | unsigned long attributes; |
50 | int static_offset; |
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51 | }; |
52 | |
53 | enum marker_id { |
54 | MARKER_ID_SET_MARKER_ID = 0, /* Static IDs available (range 0-7) */ |
55 | MARKER_ID_SET_MARKER_FORMAT, |
56 | MARKER_ID_HEARTBEAT_32, |
57 | MARKER_ID_HEARTBEAT_64, |
58 | MARKER_ID_COMPACT, /* Compact IDs (range: 8-127) */ |
59 | MARKER_ID_DYNAMIC, /* Dynamic IDs (range: 128-65535) */ |
60 | }; |
61 | |
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62 | static inline guint16 marker_get_id_from_info(LttTrace *trace, |
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63 | struct marker_info *info) |
64 | { |
65 | return ((unsigned long)info - (unsigned long)trace->markers->data) |
66 | / sizeof(struct marker_info); |
67 | } |
68 | |
69 | static inline struct marker_info *marker_get_info_from_id(LttTrace *trace, |
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70 | guint16 id) |
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71 | { |
72 | if (unlikely(trace->markers->len < id)) |
73 | return NULL; |
74 | return &g_array_index(trace->markers, struct marker_info, id); |
75 | } |
76 | |
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77 | /* |
78 | * Returns the head of the marker info list for that name. |
79 | */ |
80 | static inline struct marker_info *marker_get_info_from_name(LttTrace *trace, |
81 | GQuark name) |
82 | { |
83 | return g_hash_table_lookup(trace->markers_hash, (gconstpointer)name); |
84 | } |
85 | |
86 | int marker_format_event(LttTrace *trace, GQuark name, const char *format); |
87 | int marker_id_event(LttTrace *trace, GQuark name, guint16 id, |
88 | uint8_t int_size, uint8_t long_size, uint8_t pointer_size, |
89 | uint8_t size_t_size, uint8_t alignment); |
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90 | int allocate_marker_data(LttTrace *trace); |
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91 | void destroy_marker_data(LttTrace *trace); |
92 | |
93 | #endif //_LTT_MARKERS_H |