process.h

/*
 * libsysactivity
 * http://sourceforge.net/projects/libsysactivity/
 * Copyright (c) 2009, 2010 Carlos Olmedo Escobar <carlos.olmedo.e@gmail.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef SA_PROCESS_H_
#define SA_PROCESS_H_

#include <sys/types.h>

enum sa_process_state {
        SA_UNKNOWN = 0, 
        SA_RUNNING = 1, 
        SA_SLEEPING = 2, 
        SA_SLEEPING_UNINTERRUPTIBLE = 3, 
        SA_ZOMBIE = 4, 
        SA_STOPPED = 5, 
};

struct sa_process_activity {
#ifdef SA_PROCESS_PID
        pid_t pid; 
#endif
#ifdef SA_PROCESS_STATE
        enum sa_process_state state; 
#endif
#ifdef SA_PROCESS_USER_TIME // TODO Explain these better
        uint64_t user_time; 
#endif
#ifdef SA_PROCESS_SYS_TIME
        uint64_t sys_time; 
#endif
#ifdef SA_PROCESS_THREADS
        uint32_t threads; 
#endif
#ifdef SA_PROCESS_VM_SIZE
        uint32_t vm_size; 
#endif
#ifdef SA_PROCESS_RSS
        uint32_t rss; 
#endif
};

struct sa_process {
#ifdef SA_PROCESS_PID
        pid_t pid; 
#endif
#ifdef SA_PROCESS_UID
        uid_t uid; 
#endif
#ifdef SA_PROCESS_GID
        gid_t gid; 
#endif
#ifdef SA_PROCESS_FILENAME
        char filename[SA_PROCESS_FILENAME]; 
#endif
#ifdef SA_PROCESS_CMDLINE
        char cmdline[SA_PROCESS_CMDLINE]; 
#endif
#ifdef SA_PROCESS_PARENT_PID
        pid_t parent_pid; 
#endif
#ifdef SA_PROCESS_PGRP
        pid_t pgrp; 
#endif
#ifdef SA_PROCESS_SID
        pid_t sid; 
#endif
#ifdef SA_PROCESS_TTY
        pid_t tty; 
#endif
#ifdef SA_PROCESS_NICE
        int8_t nice; 
#endif
#ifdef SA_PROCESS_START_TIME
        uint64_t start_time; 
#endif
struct sa_process_activity activity;
};

#ifdef SA_OPEN_PROCESS

int sa_open_process() SA_EXPORT;
#endif

#ifdef SA_CLOSE_PROCESS

int sa_close_process() SA_EXPORT;
#endif

int sa_count_processes(uint32_t* number) SA_EXPORT SA_NONNULL;

int sa_get_processes_ids(pid_t* dst, uint32_t dst_size, uint32_t* written) SA_EXPORT SA_NONNULL;

int sa_get_process(pid_t pid, struct sa_process* dst) SA_EXPORT SA_NONNULL;

int sa_get_process_activity(pid_t pid, struct sa_process_activity* dst) SA_EXPORT SA_NONNULL;

#endif /* SA_PROCESS_H_ */