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88 lines
3.0 KiB
C
88 lines
3.0 KiB
C
/*
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* Copyright (C) 2021 BlueKitchen GmbH
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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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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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH 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
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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#define BTSTACK_FILE__ "btstack_signal.c"
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// enable System V signal API
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#define _POSIX_C_SOURCE 200809
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#include "btstack_signal.h"
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#include <pthread.h>
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#include <signal.h>
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#include <string.h>
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#include "btstack_run_loop.h"
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static void signal_callback(void * arg){
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void (*callback)(void) = (void (*)(void)) arg;
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(*callback)();
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}
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static void * signal_thread(void *arg) {
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// prepare registration
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btstack_context_callback_registration_t registration;
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memset(®istration, 0, sizeof(btstack_context_callback_registration_t));
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registration.callback = &signal_callback;
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registration.context = arg;
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while (1){
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// wait for signal
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sigset_t sigset;
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sigemptyset(&sigset);
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sigaddset(&sigset, SIGINT);
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int sig = 0;
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(void) sigwait(&sigset, &sig);
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// execute callback on main thread
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btstack_run_loop_execute_on_main_thread(®istration);
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}
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return NULL;
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}
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void btstack_signal_register_callback(int signal, void (*callback)(void)) {
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// block signal
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sigset_t base_mask;
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sigemptyset (&base_mask);
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sigaddset (&base_mask, signal);
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sigprocmask (SIG_SETMASK, &base_mask, NULL);
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// start thread to receive signal
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pthread_t thread;
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pthread_create(&thread, NULL, signal_thread, (void*) callback);
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}
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