From nobody Mon Feb 9 23:01:42 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1518056628759742.9655759069659; Wed, 7 Feb 2018 18:23:48 -0800 (PST) Received: from localhost ([::1]:59220 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ejbsJ-0000VW-Qo for importer@patchew.org; Wed, 07 Feb 2018 21:23:47 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41649) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ejbov-00066b-QV for qemu-devel@nongnu.org; Wed, 07 Feb 2018 21:20:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ejbou-0004Qm-I6 for qemu-devel@nongnu.org; Wed, 07 Feb 2018 21:20:17 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:49846 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ejbou-0004QV-4V for qemu-devel@nongnu.org; Wed, 07 Feb 2018 21:20:16 -0500 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id BCA944075171; Thu, 8 Feb 2018 02:20:15 +0000 (UTC) Received: from lemon.usersys.redhat.com (ovpn-12-87.pek2.redhat.com [10.72.12.87]) by smtp.corp.redhat.com (Postfix) with ESMTP id 981F2B0789; Thu, 8 Feb 2018 02:20:14 +0000 (UTC) From: Fam Zheng To: qemu-devel@nongnu.org Date: Thu, 8 Feb 2018 10:19:43 +0800 Message-Id: <20180208021953.7354-7-famz@redhat.com> In-Reply-To: <20180208021953.7354-1-famz@redhat.com> References: <20180208021953.7354-1-famz@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 08 Feb 2018 02:20:15 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 08 Feb 2018 02:20:15 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'famz@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PULL 06/16] curl: convert to CoQueue X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Paolo Bonzini Now that CoQueues can use a QemuMutex for thread-safety, there is no need for curl to roll its own coroutine queue. Coroutines can be placed directly on the queue instead of using a list of CURLAIOCBs. Reviewed-by: Stefan Hajnoczi Signed-off-by: Paolo Bonzini Message-Id: <20180203153935.8056-6-pbonzini@redhat.com> Reviewed-by: Fam Zheng Signed-off-by: Fam Zheng --- block/curl.c | 20 ++++---------------- 1 file changed, 4 insertions(+), 16 deletions(-) diff --git a/block/curl.c b/block/curl.c index 35cf417f59..cd578d3d14 100644 --- a/block/curl.c +++ b/block/curl.c @@ -101,8 +101,6 @@ typedef struct CURLAIOCB { =20 size_t start; size_t end; - - QSIMPLEQ_ENTRY(CURLAIOCB) next; } CURLAIOCB; =20 typedef struct CURLSocket { @@ -138,7 +136,7 @@ typedef struct BDRVCURLState { bool accept_range; AioContext *aio_context; QemuMutex mutex; - QSIMPLEQ_HEAD(, CURLAIOCB) free_state_waitq; + CoQueue free_state_waitq; char *username; char *password; char *proxyusername; @@ -538,7 +536,6 @@ static int curl_init_state(BDRVCURLState *s, CURLState = *state) /* Called with s->mutex held. */ static void curl_clean_state(CURLState *s) { - CURLAIOCB *next; int j; for (j =3D 0; j < CURL_NUM_ACB; j++) { assert(!s->acb[j]); @@ -556,13 +553,7 @@ static void curl_clean_state(CURLState *s) =20 s->in_use =3D 0; =20 - next =3D QSIMPLEQ_FIRST(&s->s->free_state_waitq); - if (next) { - QSIMPLEQ_REMOVE_HEAD(&s->s->free_state_waitq, next); - qemu_mutex_unlock(&s->s->mutex); - aio_co_wake(next->co); - qemu_mutex_lock(&s->s->mutex); - } + qemu_co_enter_next(&s->s->free_state_waitq, &s->s->mutex); } =20 static void curl_parse_filename(const char *filename, QDict *options, @@ -784,7 +775,7 @@ static int curl_open(BlockDriverState *bs, QDict *optio= ns, int flags, } =20 DPRINTF("CURL: Opening %s\n", file); - QSIMPLEQ_INIT(&s->free_state_waitq); + qemu_co_queue_init(&s->free_state_waitq); s->aio_context =3D bdrv_get_aio_context(bs); s->url =3D g_strdup(file); qemu_mutex_lock(&s->mutex); @@ -888,10 +879,7 @@ static void curl_setup_preadv(BlockDriverState *bs, CU= RLAIOCB *acb) if (state) { break; } - QSIMPLEQ_INSERT_TAIL(&s->free_state_waitq, acb, next); - qemu_mutex_unlock(&s->mutex); - qemu_coroutine_yield(); - qemu_mutex_lock(&s->mutex); + qemu_co_queue_wait(&s->free_state_waitq, &s->mutex); } =20 if (curl_init_state(s, state) < 0) { --=20 2.14.3