1STRUCT UTRACE_ENGINE(9)         utrace core API        STRUCT UTRACE_ENGINE(9)
2
3
4

NAME

6       struct_utrace_engine - per-engine structure
7

SYNOPSIS

9       struct utrace_engine {
10         const struct utrace_engine_ops * ops;
11         void * data;
12         unsigned long flags;
13       };
14

MEMBERS

16       ops
17
18           struct utrace_engine_ops pointer passed to utrace_attach_task
19
20       data
21           engine-private void * passed to utrace_attach_task
22
23       flags
24           event mask set by utrace_set_events plus internal flag bits
25

DESCRIPTION

27       The task itself never has to worry about engines detaching while it's
28       doing event callbacks. These structures are removed from the task's
29       active list only when it's stopped, or by the task itself.
30
31       utrace_engine_get and utrace_engine_put maintain a reference count.
32       When it drops to zero, the structure is freed. One reference is held
33       implicitly while the engine is attached to its task.
34
35
36
37Kernel Hackers Manual 2.6.       November 2011         STRUCT UTRACE_ENGINE(9)