df559ab6e0
Use the macros for red black tree provided by Free BSD to speed up io_channel lookup. Signed-off-by: Jiewei Ke <jiewei@smartx.com> Change-Id: Icfd87a8a2f60c082a17b8c501a03faba83edb762 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7895 Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: GangCao <gang.cao@intel.com>
69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation. 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_THREAD_INTERNAL_H_
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#define SPDK_THREAD_INTERNAL_H_
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#include "spdk/assert.h"
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#include "spdk/thread.h"
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#include "spdk/tree.h"
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/**
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* \brief Represents a per-thread channel for accessing an I/O device.
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*
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* An I/O device may be a physical entity (i.e. NVMe controller) or a software
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* entity (i.e. a blobstore).
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*
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* This structure is not part of the API - all accesses should be done through
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* spdk_io_channel function calls.
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*/
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struct spdk_io_channel {
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struct spdk_thread *thread;
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struct io_device *dev;
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uint32_t ref;
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uint32_t destroy_ref;
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RB_ENTRY(spdk_io_channel) node;
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spdk_io_channel_destroy_cb destroy_cb;
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uint8_t _padding[40];
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/*
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* Modules will allocate extra memory off the end of this structure
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* to store references to hardware-specific references (i.e. NVMe queue
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* pairs, or references to child device spdk_io_channels (i.e.
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* virtual bdevs).
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*/
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};
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SPDK_STATIC_ASSERT(sizeof(struct spdk_io_channel) == SPDK_IO_CHANNEL_STRUCT_SIZE, "incorrect size");
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#endif /* SPDK_THREAD_INTERNAL_H_ */
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