trace.h(7POSIX)

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.

NAME
trace.h — tracing

SYNOPSIS

#include <trace.h>

DESCRIPTION
The <trace.h> header shall define the posix_trace_event_info structure, which shall include at least the following members:

    trace_event_id_t  posix_event_id
    pid_t             posix_pid
    void             *posix_prog_address
    pthread_t         posix_thread_id
    struct timespec   posix_timestamp
    int               posix_truncation_status

The <trace.h> header shall define the posix_trace_status_info structure, which shall include at least the following members:

    int     posix_stream_full_status
    int     posix_stream_overrun_status
    int     posix_stream_status
    int     posix_log_full_status
    int     posix_log_overrun_status
    int     posix_stream_flush_error
    int     posix_stream_flush_status

The <trace.h> header shall define the following symbolic constants:

POSIX_TRACE_ALL_EVENTS
POSIX_TRACE_APPEND
POSIX_TRACE_CLOSE_FOR_CHILD
POSIX_TRACE_FILTER
POSIX_TRACE_FLUSH
POSIX_TRACE_FLUSH_START
POSIX_TRACE_FLUSH_STOP
POSIX_TRACE_FLUSHING
POSIX_TRACE_FULL
POSIX_TRACE_LOOP
POSIX_TRACE_NO_OVERRUN
POSIX_TRACE_NOT_FLUSHING
POSIX_TRACE_NOT_FULL
POSIX_TRACE_INHERITED
POSIX_TRACE_NOT_TRUNCATED
POSIX_TRACE_OVERFLOW
POSIX_TRACE_OVERRUN
POSIX_TRACE_RESUME
POSIX_TRACE_RUNNING
POSIX_TRACE_START
POSIX_TRACE_STOP
POSIX_TRACE_SUSPENDED
POSIX_TRACE_SYSTEM_EVENTS
POSIX_TRACE_TRUNCATED_READ
POSIX_TRACE_TRUNCATED_RECORD
POSIX_TRACE_UNNAMED_USER_EVENT
POSIX_TRACE_UNTIL_FULL
POSIX_TRACE_WOPID_EVENTS

The <trace.h> header shall define the size_t, trace_attr_t, trace_event_id_t, trace_event_set_t, and trace_id_t types as described in <sys/types.h>.

The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.

    int  posix_trace_attr_destroy(trace_attr_t *);
    int  posix_trace_attr_getclockres(const trace_attr_t *,
             struct timespec *);
    int  posix_trace_attr_getcreatetime(const trace_attr_t *,
             struct timespec *);
    int  posix_trace_attr_getgenversion(const trace_attr_t *, char *);
    int  posix_trace_attr_getinherited(const trace_attr_t *restrict,
             int *restrict);
    int  posix_trace_attr_getlogfullpolicy(const trace_attr_t *restrict,
             int *restrict);
    int  posix_trace_attr_getlogsize(const trace_attr_t *restrict,
             size_t *restrict);
    int  posix_trace_attr_getmaxdatasize(const trace_attr_t *restrict,
             size_t *restrict);
    int  posix_trace_attr_getmaxsystemeventsize(const trace_attr_t *restrict,
             size_t *restrict);
    int  posix_trace_attr_getmaxusereventsize(const trace_attr_t *restrict,
             size_t, size_t *restrict);
    int  posix_trace_attr_getname(const trace_attr_t *, char *);
    int  posix_trace_attr_getstreamfullpolicy(const trace_attr_t *restrict,
             int *restrict);
    int  posix_trace_attr_getstreamsize(const trace_attr_t *restrict,
             size_t *restrict);
    int  posix_trace_attr_init(trace_attr_t *);
    int  posix_trace_attr_setinherited(trace_attr_t *, int);
    int  posix_trace_attr_setlogfullpolicy(trace_attr_t *, int);
    int  posix_trace_attr_setlogsize(trace_attr_t *, size_t);
    int  posix_trace_attr_setmaxdatasize(trace_attr_t *, size_t);
    int  posix_trace_attr_setname(trace_attr_t *, const char *);
    int  posix_trace_attr_setstreamfullpolicy(trace_attr_t *, int);
    int  posix_trace_attr_setstreamsize(trace_attr_t *, size_t);
    int  posix_trace_clear(trace_id_t);
    int  posix_trace_close(trace_id_t);
    int  posix_trace_create(pid_t, const trace_attr_t *restrict,
             trace_id_t *restrict);
    int  posix_trace_create_withlog(pid_t, const trace_attr_t *restrict,
             int, trace_id_t *restrict);
    void posix_trace_event(trace_event_id_t, const void *restrict, size_t);
    int  posix_trace_eventid_equal(trace_id_t, trace_event_id_t,
             trace_event_id_t);
    int  posix_trace_eventid_get_name(trace_id_t, trace_event_id_t, char *);
    int  posix_trace_eventid_open(const char *restrict,
             trace_event_id_t *restrict);
    int  posix_trace_eventset_add(trace_event_id_t, trace_event_set_t *);
    int  posix_trace_eventset_del(trace_event_id_t, trace_event_set_t *);
    int  posix_trace_eventset_empty(trace_event_set_t *);
    int  posix_trace_eventset_fill(trace_event_set_t *, int);
    int  posix_trace_eventset_ismember(trace_event_id_t,
             const trace_event_set_t *restrict, int *restrict);
    int  posix_trace_eventtypelist_getnext_id(trace_id_t,
             trace_event_id_t *restrict, int *restrict);
    int  posix_trace_eventtypelist_rewind(trace_id_t);
    int  posix_trace_flush(trace_id_t);
    int  posix_trace_get_attr(trace_id_t, trace_attr_t *);
    int  posix_trace_get_filter(trace_id_t, trace_event_set_t *);
    int  posix_trace_get_status(trace_id_t,
             struct posix_trace_status_info *);
    int  posix_trace_getnext_event(trace_id_t,
             struct posix_trace_event_info *restrict, void *restrict,
             size_t, size_t *restrict, int *restrict);
    int  posix_trace_open(int, trace_id_t *);
    int  posix_trace_rewind(trace_id_t);
    int  posix_trace_set_filter(trace_id_t, const trace_event_set_t *, int);
    int  posix_trace_shutdown(trace_id_t);
    int  posix_trace_start(trace_id_t);
    int  posix_trace_stop(trace_id_t);
    int  posix_trace_timedgetnext_event(trace_id_t,
             struct posix_trace_event_info *restrict, void *restrict,
             size_t, size_t *restrict, int *restrict,
             const struct timespec *restrict);
    int  posix_trace_trid_eventid_open(trace_id_t, const char *restrict,
             trace_event_id_t *restrict);
    int  posix_trace_trygetnext_event(trace_id_t,
             struct posix_trace_event_info *restrict, void *restrict, size_t,
             size_t *restrict, int *restrict);

The following sections are informative.

APPLICATION USAGE
None.

RATIONALE
None.

FUTURE DIRECTIONS
The <trace.h> header may be removed in a future version.

SEE ALSO
<sys_types.h>

The System Interfaces volume of POSIX.1-2017, Section 2.11, Tracing, posix_trace_attr_destroy(), posix_trace_attr_getclockres(), posix_trace_attr_getinherited(), posix_trace_attr_getlogsize(), posix_trace_clear(), posix_trace_close(), posix_trace_create(), posix_trace_event(), posix_trace_eventid_equal(), posix_trace_eventset_add(), posix_trace_eventtypelist_getnext_id(), posix_trace_get_attr(), posix_trace_get_filter(), posix_trace_getnext_event(), posix_trace_start()

COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .