table of contents
STRUCT UTRACE_ENGINE(9) | utrace core API | STRUCT UTRACE_ENGINE(9) |
NAME¶
struct_utrace_engine - per-engine structure
SYNOPSIS¶
struct utrace_engine {
const struct utrace_engine_ops * ops;
void * data;
unsigned long flags; };
MEMBERS¶
ops
struct utrace_engine_ops pointer passed to utrace_attach_task
data
engine-private void * passed to
utrace_attach_task
flags
event mask set by utrace_set_events plus internal
flag bits
DESCRIPTION¶
The task itself never has to worry about engines detaching while it´s doing event callbacks. These structures are removed from the task´s active list only when it´s stopped, or by the task itself.
utrace_engine_get and utrace_engine_put maintain a reference count. When it drops to zero, the structure is freed. One reference is held implicitly while the engine is attached to its task.
May 2024 | Kernel Hackers Manual 2.6. |