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- /****************************************************************************
- * include/sys/wait.h
- *
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership. The
- * ASF licenses this file to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance with the
- * License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations
- * under the License.
- *
- ****************************************************************************/
- #ifndef __INCLUDE_SYS_WAIT_H
- #define __INCLUDE_SYS_WAIT_H
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <sys/types.h>
- #include <signal.h>
- #ifdef CONFIG_SCHED_WAITPID
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- /* The following are provided for analysis of returned status values.
- * Encoded is as follows as 2 bytes of _info(MS) then two bytes of code (LS).
- * Code:
- * 0 - Child has exited, info is the exit code.
- * Other values - Not implemented
- */
- #define WEXITSTATUS(s) (((s) >> 8) & 0xff) /* Return exit status */
- #define WIFEXITED(s) (((s) & 0xff) == 0) /* True: Child exited normally */
- #define WIFCONTINUED(s) (false) /* True: Child has been continued */
- #define WIFSIGNALED(s) (false) /* True: Child exited due to uncaught signal */
- #define WIFSTOPPED(s) (false) /* True: Child is currently stopped */
- #define WSTOPSIG(s) (false) /* Return signal number that caused process to stop */
- #define WTERMSIG(s) (false) /* Return signal number that caused process to terminate */
- /* The following symbolic constants are possible values for the options
- * argument to waitpid() (1) and/or waitid() (2),
- */
- #define WCONTINUED (1 << 0) /* Status for child that has been continued (1)(2) */
- #define WNOHANG (1 << 1) /* Do not wait if status not available (1) (2) */
- #define WUNTRACED (1 << 2) /* Report status of stopped child process (1) */
- #define WEXITED (1 << 3) /* Wait for processes that have exited (2) */
- #define WSTOPPED (1 << 4) /* Status for child stopped on signal (2) */
- #define WNOWAIT (1 << 5) /* Keep the process in a waitable state (2) */
- #define WCLAIMED (1 << 7) /* Non-standard (For internal OS use only) */
- /****************************************************************************
- * Public Type Definitions
- ****************************************************************************/
- #ifndef __ASSEMBLY__
- enum idtype_e
- {
- P_PID = 1,
- P_PGID = 2,
- P_ALL = 3
- };
- typedef enum idtype_e idtype_t;
- /****************************************************************************
- * Public Function Prototypes
- ****************************************************************************/
- #undef EXTERN
- #if defined(__cplusplus)
- #define EXTERN extern "C"
- extern "C"
- {
- #else
- #define EXTERN extern
- #endif
- pid_t wait(FAR int *stat_loc);
- int waitid(idtype_t idtype, id_t id, FAR siginfo_t *info, int options);
- pid_t waitpid(pid_t pid, FAR int *stat_loc, int options);
- #undef EXTERN
- #if defined(__cplusplus)
- }
- #endif
- #endif /* __ASSEMBLY__ */
- #endif /* CONFIG_SCHED_WAITPID */
- #endif /* __INCLUDE_SYS_WAIT_H */
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