Commit | Line | Data |
---|---|---|
5e0cbfb0 PP |
1 | --- |
2 | id: lttng-modules-tp-fast-assign | |
3 | --- | |
4 | ||
5 | This table describes possible entries for the `TP_fast_assign()` part | |
6 | of `LTTNG_TRACEPOINT_EVENT()`: | |
7 | ||
f6875860 | 8 | <div class="table"> |
5e0cbfb0 PP |
9 | <table class="func-desc"> |
10 | <thead> | |
11 | <tr> | |
12 | <th>Macro</th> | |
13 | <th>Description/arguments</th> | |
14 | </tr> | |
15 | </thead> | |
16 | <tbody> | |
17 | <tr> | |
18 | <td> | |
19 | <ul> | |
20 | <li><code class="no-bg">tp_assign(<span class="arg">d</span>, <span class="arg">s</span>)</code></li> | |
21 | </ul> | |
22 | </td> | |
23 | <td> | |
24 | <p> | |
25 | Assignment of C expression <code class="arg">s</code> | |
26 | to tracepoint field <code class="arg">d</code> | |
27 | </p> | |
28 | <ul> | |
29 | <li> | |
30 | <code class="arg">d</code> name of destination | |
31 | tracepoint field | |
32 | </li> | |
33 | <li> | |
34 | <code class="arg">s</code> source C expression | |
35 | (may refer to tracepoint arguments) | |
36 | </li> | |
37 | </ul> | |
38 | </td> | |
39 | </tr> | |
40 | <tr> | |
41 | <td> | |
42 | <ul> | |
43 | <li><code class="no-bg">tp_memcpy(<span class="arg">d</span>, <span class="arg">s</span>, <span class="arg">l</span>)</code></li> | |
44 | </ul> | |
45 | </td> | |
46 | <td> | |
47 | <p> | |
48 | Memory copy of <code class="arg">l</code> bytes from | |
49 | <code class="arg">s</code> to tracepoint field | |
50 | <code class="arg">d</code> (use with array fields) | |
51 | </p> | |
52 | <ul> | |
53 | <li> | |
54 | <code class="arg">d</code> name of destination | |
55 | tracepoint field | |
56 | </li> | |
57 | <li> | |
58 | <code class="arg">s</code> source C expression | |
59 | (may refer to tracepoint arguments) | |
60 | </li> | |
61 | <li> | |
62 | <code class="arg">l</code> number of bytes to | |
63 | copy | |
64 | </li> | |
65 | </ul> | |
66 | </td> | |
67 | </tr> | |
68 | <tr> | |
69 | <td> | |
70 | <ul> | |
71 | <li><code class="no-bg">tp_memcpy_from_user(<span class="arg">d</span>, <span class="arg">s</span>, <span class="arg">l</span>)</code></li> | |
72 | </ul> | |
73 | </td> | |
74 | <td> | |
75 | <p> | |
76 | Memory copy of <code class="arg">l</code> bytes from | |
77 | user space <code class="arg">s</code> to tracepoint field | |
78 | <code class="arg">d</code> (use with array fields) | |
79 | </p> | |
80 | <ul> | |
81 | <li> | |
82 | <code class="arg">d</code> name of destination | |
83 | tracepoint field | |
84 | </li> | |
85 | <li> | |
86 | <code class="arg">s</code> source C expression | |
87 | (may refer to tracepoint arguments) | |
88 | </li> | |
89 | <li> | |
90 | <code class="arg">l</code> number of bytes to | |
91 | copy | |
92 | </li> | |
93 | </ul> | |
94 | </td> | |
95 | </tr> | |
96 | <tr> | |
97 | <td> | |
98 | <ul> | |
99 | <li><code class="no-bg">tp_memcpy_dyn(<span class="arg">d</span>, <span class="arg">s</span>)</code></li> | |
100 | </ul> | |
101 | </td> | |
102 | <td> | |
103 | <p> | |
104 | Memory copy of dynamically-sized array | |
105 | from <code class="arg">s</code> to tracepoint field | |
106 | <code class="arg">d</code>; number of bytes is | |
107 | known from the field's length expression (use with | |
108 | dynamically-sized array fields) | |
109 | </p> | |
110 | <ul> | |
111 | <li> | |
112 | <code class="arg">d</code> name of destination | |
113 | tracepoint field | |
114 | </li> | |
115 | <li> | |
116 | <code class="arg">s</code> source C expression | |
117 | (may refer to tracepoint arguments) | |
118 | </li> | |
119 | <li> | |
120 | <code class="arg">l</code> number of bytes to | |
121 | copy | |
122 | </li> | |
123 | </ul> | |
124 | </td> | |
125 | </tr> | |
126 | <tr> | |
127 | <td> | |
128 | <ul> | |
129 | <li><code class="no-bg">tp_strcpy(<span class="arg">d</span>, <span class="arg">s</span>)</code></li> | |
130 | </ul> | |
131 | </td> | |
132 | <td> | |
133 | <p> | |
134 | String copy of <code class="arg">s</code> | |
135 | to tracepoint field <code class="arg">d</code> | |
136 | (use with string fields) | |
137 | </p> | |
138 | <ul> | |
139 | <li> | |
140 | <code class="arg">d</code> name of destination | |
141 | tracepoint field | |
142 | </li> | |
143 | <li> | |
144 | <code class="arg">s</code> source C expression | |
145 | (may refer to tracepoint arguments) | |
146 | </li> | |
147 | </ul> | |
148 | </td> | |
149 | </tr> | |
150 | </tbody> | |
151 | </table> | |
f6875860 | 152 | </div> |