f22f4e562e
Type: refactor Switch from a wrapped byte space to a "continuous" one wherein fifo chunks are appended to the fifo as more data is enqueued and chunks are removed as data is dequeued. The fifo is still subject to a maximum size, i.e., maximum number of bytes that can be enqueued, so the max number of chunks associated to the fifo is also constrained. When enqueueing data, which must fit within the available free space, if not enough "supporting" chunk memory is available, the fifo asks the fifo segment for enough chunk memory to ensure that the write can succeed. To avoid allocating large amounts of small chunks due to small writes, if possible, the size of the chunks requested is lower capped by min_alloc. When dequeuing data, all the chunks that have been completely drained, i.e., head moved beyond the chunks’ end bytes, are unlinked from the fifo and returned to the fifo segment. The one exception to this is the last chunk which is never unlinked. Change-Id: I98c1dbd9135fb79650365c7e40c29238b96cd4ee Signed-off-by: Florin Coras <fcoras@cisco.com>
64 lines
1.7 KiB
CMake
64 lines
1.7 KiB
CMake
# Copyright (c) 2018-2019 Cisco and/or its affiliates.
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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##############################################################################
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# svm shared library
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##############################################################################
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add_vpp_library(svm
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SOURCES
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fifo_segment.c
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message_queue.c
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queue.c
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svm.c
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ssvm.c
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svm_fifo.c
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MULTIARCH_SOURCES
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svm_fifo.c
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INSTALL_HEADERS
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fifo_segment.h
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fifo_types.h
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message_queue.h
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queue.h
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ssvm.h
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svm_common.h
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svm_fifo.h
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svm.h
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svmdb.h
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LINK_LIBRARIES vppinfra rt pthread
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)
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##############################################################################
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# svmdb shared library
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##############################################################################
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add_vpp_library(svmdb
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SOURCES svmdb.c
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LINK_LIBRARIES svm vppinfra rt pthread
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)
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##############################################################################
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# svm tools
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##############################################################################
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add_vpp_executable(svmtool
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SOURCES svmtool.c
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LINK_LIBRARIES vppinfra svm
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)
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add_vpp_executable (svmdbtool
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SOURCES svmdbtool.c
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LINK_LIBRARIES vppinfra svm svmdb
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)
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