запуск и остановка трассировки (TRACING) (trace start and stop (TRACING))
Пролог (Prolog)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
Имя (Name)
posix_trace_start, posix_trace_stop — trace start and stop
(TRACING)
Синопсис (Synopsis)
#include <trace.h>
int posix_trace_start(trace_id_t trid);
int posix_trace_stop (trace_id_t trid);
Описание (Description)
The posix_trace_start() and posix_trace_stop() functions,
respectively, shall start and stop the trace stream identified by
the argument trid.
The effect of calling the posix_trace_start() function shall be
recorded in the trace stream as the POSIX_TRACE_START system
trace event and the status of the trace stream shall become
POSIX_TRACE_RUNNING. If the trace stream is in progress when
this function is called, the POSIX_TRACE_START system trace event
shall not be recorded and the trace stream shall continue to run.
If the trace stream is full, the POSIX_TRACE_START system trace
event shall not be recorded and the status of the trace stream
shall not be changed.
The effect of calling the posix_trace_stop() function shall be
recorded in the trace stream as the POSIX_TRACE_STOP system trace
event and the status of the trace stream shall become
POSIX_TRACE_SUSPENDED. If the trace stream is suspended when
this function is called, the POSIX_TRACE_STOP system trace event
shall not be recorded and the trace stream shall remain
suspended. If the trace stream is full, the POSIX_TRACE_STOP
system trace event shall not be recorded and the status of the
trace stream shall not be changed.
Возвращаемое значение (Return value)
Upon successful completion, these functions shall return a value
of zero. Otherwise, they shall return the corresponding error
number.
Ошибки (Error)
These functions shall fail if:
EINVAL The value of the argument trid does not correspond to an
active trace stream and thus no trace stream was started
or stopped.
EINTR The operation was interrupted by a signal and thus the
trace stream was not necessarily started or stopped.
The following sections are informative.
Примеры (Examples)
None.
Использование в приложениях (Application usage)
None.
Обоснование (Rationale)
None.
Будущие направления (Future directions)
The posix_trace_start() and posix_trace_stop() functions may be
removed in a future version.
Смотри также (See also)
posix_trace_create(3p)
The Base Definitions volume of POSIX.1‐2017, trace.h(0p)
