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NAME |SYNOPSIS |DESCRIPTION |RETURN VALUE |EXAMPLE |FILES |SEE ALSO |AUTHOR |REPORTING BUGS |LICENSE |RESOURCES |NOTES |COLOPHON | |
LIBTRACEEVENT(3) libtraceevent ManualLIBTRACEEVENT(3)tep_set_flag, tep_clear_flag, tep_test_flag - Manage flags of trace event parser context.
#include <event-parse.h> enumtep_flag{TEP_NSEC_OUTPUT,TEP_DISABLE_SYS_PLUGINS,TEP_DISABLE_PLUGINS }; voidtep_set_flag(struct tep_handle *tep, enum tep_flagflag); voidtep_clear_flag(struct tep_handle *tep, enum tep_flagflag); booltep_test_flag(struct tep_handle *tep, enum tep_flagflag);Trace event parser context flags are defined inenum tep_flag:TEP_NSEC_OUTPUT - print event’s timestamp in nano seconds, instead of micro seconds.TEP_DISABLE_SYS_PLUGINS - disable plugins, located in system’s plugin directory. This directory is defined at library compile time, and usually depends on library installation prefix: (install_preffix)/lib/traceevent/pluginsTEP_DISABLE_PLUGINS - disable all library plugins: - in system’s plugin directory - in directory, defined by the environment variableTRACEEVENT_PLUGIN_DIR - in user’s home directory,~/.traceevent/plugins Note: plugin related flags must me set before callingtep_load_plugins()API. Thetep_set_flag()function setsflag totep context. Thetep_clear_flag()function clearsflag fromtep context. Thetep_test_flag()function tests ifflag is set totep context.
tep_test_flag()function returns true ifflag is set, false otherwise.
#include <event-parse.h> ... struct tep_handle *tep = tep_alloc(); ... /* Print timestamps in nanoseconds */ tep_set_flag(tep, TEP_NSEC_OUTPUT); ... if (tep_test_flag(tep, TEP_NSEC_OUTPUT)) { /* print timestamps in nanoseconds */ } else { /* print timestamps in microseconds */ } ... /* Print timestamps in microseconds */ tep_clear_flag(tep, TEP_NSEC_OUTPUT); ...event-parse.h Header file to include in order to have access to the library APIs.-ltraceevent Linker switch to add when building a program that uses the library.
libtraceevent(3),trace-cmd(1)
Steven Rostedt<rostedt@goodmis.org[1]>, author oflibtraceevent.Tzvetomir Stoyanov<tz.stoyanov@gmail.com[2]>, author of this man page.
Report bugs to <linux-trace-devel@vger.kernel.org[3]>
libtraceevent is Free Software licensed under the GNU LGPL 2.1
https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/
1. rostedt@goodmis.org mailto:rostedt@goodmis.org 2. tz.stoyanov@gmail.com mailto:tz.stoyanov@gmail.com 3. linux-trace-devel@vger.kernel.org mailto:linux-trace-devel@vger.kernel.org
This page is part of thelibtraceevent (Linux kernel trace event library) project. Information about the project can be found at ⟨https://www.trace-cmd.org/⟩. If you have a bug report for this manual page, see ⟨https://www.trace-cmd.org/⟩. This page was obtained from the project's upstream Git repository ⟨https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git⟩ on 2025-08-11. (At that time, the date of the most recent commit that was found in the repository was 2025-05-30.) If you discover any rendering problems in this HTML version of the page, or you believe there is a better or more up-to-date source for the page, or you have corrections or improvements to the information in this COLOPHON (which isnot part of the original manual page), send a mail to man-pages@man7.orglibtraceevent 1.7.3 09/24/2023LIBTRACEEVENT(3)Pages that refer to this page:tep_load_plugins(3)
HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH. | |