490b06e24b
scan-build can't follow double pointers in tailqs and often assumes that removed elements are still on the list, so now if we detect __clang_analyzer__ we'll redefine TAILQ_REMOVE with extra asserts to silence those scan-build errors. Change-Id: I14134d8e75f7829e178b74d19f711f77cf018f14 Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/459285 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com> Reviewed-by: Paul Luse <paul.e.luse@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: yidong0635 <dongx.yi@intel.com>
80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SPDK_QUEUE_H
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#define SPDK_QUEUE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <sys/cdefs.h>
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#include <sys/queue.h>
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/*
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* The SPDK NVMe driver was originally ported from FreeBSD, which makes
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* use of features in FreeBSD's queue.h that do not exist on Linux.
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* Include a header with these additional features on Linux only.
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*/
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#ifndef __FreeBSD__
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#include "spdk/queue_extras.h"
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#endif
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/*
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* scan-build can't follow double pointers in queues and often assumes
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* that removed elements are still on the list. We redefine TAILQ_REMOVE
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* with extra asserts to silence it.
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*/
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#ifdef __clang_analyzer__
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#undef TAILQ_REMOVE
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#define TAILQ_REMOVE(head, elm, field) do { \
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__typeof__(elm) _elm; \
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if (((elm)->field.tqe_next) != NULL) \
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(elm)->field.tqe_next->field.tqe_prev = \
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(elm)->field.tqe_prev; \
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else \
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(head)->tqh_last = (elm)->field.tqe_prev; \
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*(elm)->field.tqe_prev = (elm)->field.tqe_next; \
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/* make sure the removed elm is not on the list anymore */ \
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TAILQ_FOREACH(_elm, head, field) { \
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assert(_elm != elm); \
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} \
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} while (0)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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