mirror of
https://github.com/azure-rtos/threadx
synced 2025-01-30 08:02:57 +08:00
104 lines
5.6 KiB
C
104 lines
5.6 KiB
C
/**************************************************************************/
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/* */
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/* Copyright (c) Microsoft Corporation. All rights reserved. */
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/* */
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/* This software is licensed under the Microsoft Software License */
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/* Terms for Microsoft Azure RTOS. Full text of the license can be */
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/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
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/* and in the root directory of this software. */
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/* */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** POSIX wrapper for THREADX */
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/** */
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/** */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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/* Include necessary system files. */
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#include "tx_api.h" /* Threadx API */
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#include "pthread.h" /* Posix API */
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#include "px_int.h" /* Posix helper functions */
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#include "tx_thread.h" /* Internal ThreadX thread management. */
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* signal PORTABLE C */
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/* 6.1.7 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This function assigns a function ("signal handler") pointed to by */
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/* func to be invoked when signal signo occurs. */
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/* */
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/* INPUT */
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/* */
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/* set Pointer to set of signals */
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/* */
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/* OUTPUT */
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/* */
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/* OK If successful */
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/* ERROR If error occurs */
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/* */
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/* CALLS */
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/* */
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/* posix_in_thread_context */
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/* posix_internal_error */
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/* posix_set_pthread_errno */
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/* tx_thread_identify */
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/* */
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/* CALLED BY */
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/* */
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/* Application Code */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
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/* */
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/**************************************************************************/
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int signal(int signo, void (*func)(int))
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{
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POSIX_TCB *current_thread;
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/* Make sure we're calling this routine from a thread context. */
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if (!posix_in_thread_context())
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{
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/* return POSIX error. */
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posix_internal_error(444);
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return(444);
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}
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/* Determine if the desired signal is valid. */
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if ((signo < 0) || (signo > SIGRTMAX))
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{
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/* Return an error. */
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posix_set_pthread_errno(EINVAL);
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return(ERROR);
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}
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/* Now pickup the current thread pointer. */
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current_thread = (POSIX_TCB *) tx_thread_identify();
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/* Now index into the array of signal handlers and insert this one. */
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current_thread -> signals.signal_func[signo] = func;
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/* Return success! */
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return(OK);
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}
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