From patchwork Mon Nov 19 12:54:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tzvetomir Stoyanov X-Patchwork-Id: 10759769 Return-Path: Received: from mail-eopbgr790045.outbound.protection.outlook.com ([40.107.79.45]:56480 "EHLO NAM03-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728958AbeKSXSH (ORCPT ); Mon, 19 Nov 2018 18:18:07 -0500 From: Tzvetomir Stoyanov To: "rostedt@goodmis.org" CC: "linux-trace-devel@vger.kernel.org" Subject: [PATCH 19/34] tools/lib/traceevent: Man page for tep_filter_match() Date: Mon, 19 Nov 2018 12:54:30 +0000 Message-ID: <20181119125357.19449-20-tstoyanov@vmware.com> References: <20181119125357.19449-1-tstoyanov@vmware.com> In-Reply-To: <20181119125357.19449-1-tstoyanov@vmware.com> Content-Language: en-US MIME-Version: 1.0 Sender: linux-trace-devel-owner@vger.kernel.org List-ID: Content-Length: 2973 Create man page for tep_filter_match() as part of the libtraceevent APIs. Signed-off-by: Tzvetomir Stoyanov --- .../libtraceevent-filter_match.txt | 96 +++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 tools/lib/traceevent/Documentation/libtraceevent-filter_match.txt diff --git a/tools/lib/traceevent/Documentation/libtraceevent-filter_match.txt b/tools/lib/traceevent/Documentation/libtraceevent-filter_match.txt new file mode 100644 index 000000000000..61c81d36c54d --- /dev/null +++ b/tools/lib/traceevent/Documentation/libtraceevent-filter_match.txt @@ -0,0 +1,96 @@ +libtraceevent(3) +================ + +NAME +---- +tep_filter_match - Tests if a record matches a filter. + +SYNOPSIS +-------- +[verse] +-- +*#include * + +enum tep_errno *tep_filter_match*(struct tep_event_filter pass:[*]_filter_, struct tep_record pass:[*]_record_); +-- + +DESCRIPTION +----------- +The _tep_filter_match()_ function tests if a _record_ matches given _filter_. + +RETURN VALUE +------------ +The _tep_filter_match()_ function returns _tep_errno_, according to the result: +[verse] +-- +_pass:[TEP_ERRNO__FILTER_MATCH]_ - filter found for event, the record matches. +_pass:[TEP_ERRNO__FILTER_MISS]_ - filter found for event, the record does not match. +_pass:[TEP_ERRNO__FILTER_NOT_FOUND]_ - no filter found for record's event. +_pass:[TEP_ERRNO__NO_FILTER]_ - no rules in the filter. +-- +or any other _tep_errno_, if an error occurred during the test. + +EXAMPLE +------- +[source,c] +-- +#include +... +struct tep_handle *tep = tep_alloc(); +struct tep_event_filter *filter = tep_filter_alloc(tep); +... +void process_record(struct tep_record *record) +{ + switch (tep_filter_match(filter, record)) { + case TEP_ERRNO__FILTER_MATCH: + /* The filter matches the record */ + break; + case TEP_ERRNO__FILTER_MISS: + /* The filter does not match the record */ + break; + case TEP_ERRNO__FILTER_NOT_FOUND: + /* No filter found for record's event */ + break; + case TEP_ERRNO__NO_FILTER: + /* There are no rules in the filter */ + break + default: + /* An error occurred during the test */ + break; + } +} +... +-- + +FILES +----- +[verse] +-- +*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. +-- + +SEE ALSO +-------- +_libtraceevent(3)_, _trace-cmd(1)_ + +AUTHOR +------ +[verse] +-- +*Steven Rostedt* , author of *libtraceevent*. +*Tzvetomir Stoyanov* , author of this man page. +-- +REPORTING BUGS +-------------- +Report bugs to + +LICENSE +------- +libtraceevent is Free Software licensed under the GNU LGPL 2.1 + +RESOURCES +--------- +https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git