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Annotation of libelwix/inc/elwix/apio.h, revision 1.2

1.2     ! misho       1: /*************************************************************************
        !             2: * (C) 2013 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
        !             3: *  by Michael Pounov <misho@elwix.org>
        !             4: *
        !             5: * $Author: misho $
        !             6: * $Id: apio.h,v 1.1.2.6 2013/12/06 00:50:16 misho Exp $
        !             7: *
        !             8: **************************************************************************
        !             9: The ELWIX and AITNET software is distributed under the following
        !            10: terms:
        !            11: 
        !            12: All of the documentation and software included in the ELWIX and AITNET
        !            13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
        !            14: 
        !            15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
        !            16:        by Michael Pounov <misho@elwix.org>.  All rights reserved.
        !            17: 
        !            18: Redistribution and use in source and binary forms, with or without
        !            19: modification, are permitted provided that the following conditions
        !            20: are met:
        !            21: 1. Redistributions of source code must retain the above copyright
        !            22:    notice, this list of conditions and the following disclaimer.
        !            23: 2. Redistributions in binary form must reproduce the above copyright
        !            24:    notice, this list of conditions and the following disclaimer in the
        !            25:    documentation and/or other materials provided with the distribution.
        !            26: 3. All advertising materials mentioning features or use of this software
        !            27:    must display the following acknowledgement:
        !            28: This product includes software developed by Michael Pounov <misho@elwix.org>
        !            29: ELWIX - Embedded LightWeight unIX and its contributors.
        !            30: 4. Neither the name of AITNET nor the names of its contributors
        !            31:    may be used to endorse or promote products derived from this software
        !            32:    without specific prior written permission.
        !            33: 
        !            34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
        !            35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            37: ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            44: SUCH DAMAGE.
        !            45: */
        !            46: #ifndef __APIO_H
        !            47: #define __APIO_H
        !            48: 
        !            49: 
        !            50: struct tagPIOPID {
        !            51:        union {
        !            52:                FILE            *fp;
        !            53:                int             fd;
        !            54:        } f;
        !            55:        pid_t                   pid;
        !            56:        int                     stat;
        !            57: 
        !            58:        SLIST_ENTRY(tagPIOPID)  next;
        !            59: };
        !            60: typedef SLIST_HEAD(, tagPIOPID) pio_pid_t;
        !            61: 
        !            62: 
        !            63: extern pio_pid_t pio_pidlist;
        !            64: 
        !            65: 
        !            66: /*
        !            67:  * e_popen() - ELWIX replacement of standard popen
        !            68:  *
        !            69:  * @command = command
        !            70:  * @type = type
        !            71:  * @ppid = return pid of child program
        !            72:  * return: NULL error or !=NULL open program
        !            73:  */
        !            74: #ifdef POPEN_STREAM
        !            75: FILE *e_popen(const char *command, const char *type, pid_t *ppid);
        !            76: #else
        !            77: int e_popen(const char *command, const char *type, pid_t *ppid);
        !            78: #endif
        !            79: /*
        !            80:  * e_pclose() - ELWIX replacement of standard pclose
        !            81:  *
        !            82:  * @iop = popen handle
        !            83:  * return: -1 error or !=-1 pid status
        !            84:  */
        !            85: #ifdef POPEN_STREAM
        !            86: int e_pclose(FILE *iop);
        !            87: #else
        !            88: int e_pclose(int iop);
        !            89: #endif
        !            90: 
        !            91: /*
        !            92:  * pio_pgetpid() - Get tagPIOPID structure from file handle
        !            93:  *
        !            94:  * @iop = popen handle
        !            95:  * return: NULL error or !=NULL tagPIOPID structure
        !            96:  */
        !            97: #ifdef POPEN_STREAM
        !            98: struct tagPIOPID *pio_pgetpid(FILE *iop);
        !            99: #else
        !           100: struct tagPIOPID *pio_pgetpid(int iop);
        !           101: #endif
        !           102: /*
        !           103:  * pio_pchkpid() - Check exit status of child programs
        !           104:  *
        !           105:  * @pids = return tagPIOPID structures of exited programs, 
        !           106:  *             if !=NULL must call array_Destroy()
        !           107:  * return: -1 error or >-1 exited programs
        !           108:  */
        !           109: int pio_pchkpid(array_t ** __restrict pids);
        !           110: 
        !           111: 
        !           112: #endif