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wangchengdong
faf864b04f
Signals in NuttX serve two primary purposes:
1. Synchronization and wake-up:
Signals can be used to block threads on specific signal sets and later
wake them up by delivering the corresponding signals to those threads.
2. Asynchronous notification:
Signals can also be used to install callback handlers for specific signals, allowing threads to
asynchronously invoke those handlers when the signals are delivered.
This change introduces the ability to disable all signal functionality to reduce footprint for NuttX.
Signed-off-by: Chengdong Wang wangchengdong@lixiang.com
41 lines
1.5 KiB
Plaintext
41 lines
1.5 KiB
Plaintext
############################################################################
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# libs/libc/signal/Make.defs
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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############################################################################
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# Add the signal C files to the build
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ifneq ($(CONFIG_DISABLE_ALL_SIGNALS),y)
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CSRCS += sig_addset.c sig_delset.c sig_emptyset.c sig_fillset.c
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CSRCS += sig_nandset.c sig_andset.c sig_orset.c sig_xorset.c
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CSRCS += sig_isemptyset.c sig_killpg.c sig_altstack.c
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CSRCS += sig_hold.c sig_ismember.c sig_pause.c sig_psignal.c
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CSRCS += sig_raise.c sig_relse.c sig_wait.c
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endif
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ifeq ($(CONFIG_ENABLE_ALL_SIGNALS),y)
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CSRCS += sig_ignore.c sig_interrupt.c sig_set.c sig_signal.c
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endif
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# Add the signal directory to the build
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DEPPATH += --dep-path signal
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VPATH += :signal
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