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Tue, 01 Jun 2021 09:24:43 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-546-DOMvbGZYPZSAXuOUuNaVVA-1; Tue, 01 Jun 2021 09:24:37 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CEBAE189C446 for ; Tue, 1 Jun 2021 13:24:36 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-84.ams2.redhat.com [10.36.112.84]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 694135C1C4; Tue, 1 Jun 2021 13:24:27 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 656501800385; Tue, 1 Jun 2021 15:24:14 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1622553879; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LuaAfgLNp0ftHMNxPsrBIquvjEpO4NRRU9Khnzc/6dQ=; b=S2h99StDiBWXconRQZWvFNGrMbOcu/wtcyKNIEqGiQGm7FBuUIjdGUcz4/4qCY25hI8jHG kGMgJJ6rTejZlAnyq/38wMu+zV7Blxn6Tf7PDcAEvOYJAghtS0jpBex/It3QghTTv3RSj7 rv/Hhy8ZtufVhaQXYdsTzUGIwESP60A= X-MC-Unique: DOMvbGZYPZSAXuOUuNaVVA-1 From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PATCH v4 03/13] trace: add trace_event_iter_init_group Date: Tue, 1 Jun 2021 15:24:04 +0200 Message-Id: <20210601132414.432430-4-kraxel@redhat.com> In-Reply-To: <20210601132414.432430-1-kraxel@redhat.com> References: <20210601132414.432430-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.371, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Markus Armbruster , "Michael S. Tsirkin" , "Dr. David Alan Gilbert" , Stefan Hajnoczi , Gerd Hoffmann Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" This allows to interate over an event group. Signed-off-by: Gerd Hoffmann Reviewed-by: Stefan Hajnoczi --- trace/control.h | 13 +++++++++++++ trace/control.c | 19 ++++++++++++++++--- 2 files changed, 29 insertions(+), 3 deletions(-) diff --git a/trace/control.h b/trace/control.h index ce40bd040574..23b8393b297e 100644 --- a/trace/control.h +++ b/trace/control.h @@ -13,8 +13,11 @@ #include "event-internal.h" =20 typedef struct TraceEventIter { + /* iter state */ size_t event; size_t group; + /* filter conditions */ + size_t group_id; const char *pattern; } TraceEventIter; =20 @@ -39,6 +42,16 @@ void trace_event_iter_init_all(TraceEventIter *iter); */ void trace_event_iter_init_pattern(TraceEventIter *iter, const char *patte= rn); =20 +/** + * trace_event_iter_init_group: + * @iter: the event iterator struct + * @group_id: group_id to filter events by group. + * + * Initialize the event iterator struct @iter, + * using @group_id to filter for events in the group. + */ +void trace_event_iter_init_group(TraceEventIter *iter, size_t group_id); + /** * trace_event_iter_next: * @iter: the event iterator struct diff --git a/trace/control.c b/trace/control.c index ed38e813b23d..2c904b7ee4c6 100644 --- a/trace/control.c +++ b/trace/control.c @@ -104,6 +104,7 @@ void trace_event_iter_init_all(TraceEventIter *iter) { iter->event =3D 0; iter->group =3D 0; + iter->group_id =3D -1; iter->pattern =3D NULL; } =20 @@ -113,20 +114,32 @@ void trace_event_iter_init_pattern(TraceEventIter *it= er, const char *pattern) iter->pattern =3D pattern; } =20 +void trace_event_iter_init_group(TraceEventIter *iter, size_t group_id) +{ + trace_event_iter_init_all(iter); + iter->group_id =3D group_id; +} + TraceEvent *trace_event_iter_next(TraceEventIter *iter) { while (iter->group < nevent_groups && event_groups[iter->group].events[iter->event] !=3D NULL) { TraceEvent *ev =3D event_groups[iter->group].events[iter->event]; + size_t group =3D iter->group; iter->event++; if (event_groups[iter->group].events[iter->event] =3D=3D NULL) { iter->event =3D 0; iter->group++; } - if (!iter->pattern || - g_pattern_match_simple(iter->pattern, trace_event_get_name(ev)= )) { - return ev; + if (iter->pattern && + !g_pattern_match_simple(iter->pattern, trace_event_get_name(ev= ))) { + continue; } + if (iter->group_id !=3D -1 && + iter->group_id !=3D group) { + continue; + } + return ev; } =20 return NULL; --=20 2.31.1