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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.