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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2017-2018 Linaro Limited
*/
/**
* @file
*
* ODP Linux helper for processes
*
* This file is not part of ODP APIs, but can be optionally used to ease common
* setups in a Linux system. User is free to implement the same setups in
* other ways (not via this file).
*/
#ifndef ODPH_LINUX_PROCESS_H_
#define ODPH_LINUX_PROCESS_H_
#include <odp/helper/threads.h>
#include <odp_api.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @addtogroup odph_thread
* @{
*/
/**
* Fork a process
*
* Forks and sets CPU affinity for the child process. Ignores 'start' and 'arg'
* thread parameters.
*
* @param[out] proc Pointer to process state info (for output)
* @param cpu Destination CPU for the child process
* @param thr_params Linux helper thread parameters
*
* @return On success: 1 for the parent, 0 for the child
* On failure: -1 for the parent, -2 for the child
*/
int odph_linux_process_fork(odph_linux_process_t *proc, int cpu,
const odph_linux_thr_params_t *thr_params);
/**
* Fork a number of processes
*
* Forks and sets CPU affinity for child processes. Ignores 'start' and 'arg'
* thread parameters.
*
* @param[out] proc_tbl Process state info table (for output)
* @param mask CPU mask of processes to create
* @param thr_params Linux helper thread parameters
*
* @return On success: 1 for the parent, 0 for the child
* On failure: -1 for the parent, -2 for the child
*/
int odph_linux_process_fork_n(odph_linux_process_t *proc_tbl,
const odp_cpumask_t *mask,
const odph_linux_thr_params_t *thr_params);
/**
* Wait for a number of processes
*
* Waits for a number of child processes to terminate. Records process state
* change status into the process state info structure.
*
* @param proc_tbl Process state info table (previously filled by fork)
* @param num Number of processes to wait
*
* @return 0 on success, -1 on failure
*/
int odph_linux_process_wait_n(odph_linux_process_t *proc_tbl, int num);
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif
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