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#ifndef ENGINE_H
#define ENGINE_H
/* $OpenBSD: engine.h,v 1.13 2012/12/07 15:08:03 espie Exp $ */
/*
* Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
* Copyright (c) 1988, 1989 by Adam de Boor
* Copyright (c) 1989 by Berkeley Softworks
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Adam de Boor.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)job.h 8.1 (Berkeley) 6/6/93
*/
/* ok = node_find_valid_commands(node);
* verify the integrity of a node's commands, pulling stuff off
* .DEFAULT and other places if necessary.
*/
extern bool node_find_valid_commands(GNode *);
/* node_failure(gn);
* indicate we don't know how to make gn.
* may continue with -k or if node was optional.
*/
extern void node_failure(GNode *);
/* Job_Touch(node);
* touch the path corresponding to a node or update the corresponding
* archive object.
*/
extern void Job_Touch(GNode *);
/* Make_TimeStamp(parent, child);
* ensure parent is at least as recent as child.
*/
extern void Make_TimeStamp(GNode *, GNode *);
/* Make_HandleUse(user_node, usee_node);
* let user_node inherit the commands from usee_node
*/
extern void Make_HandleUse(GNode *, GNode *);
/* old = Make_OODate(node);
* check if a given node is out-of-date.
*/
extern bool Make_OODate(GNode *);
/* Make_DoAllVar(node);
* fill all dynamic variables for a node.
*/
extern void Make_DoAllVar(GNode *);
/* status = run_gnode(gn):
* fully run all commands of a node for compat mode.
*/
extern int run_gnode(GNode *);
/*-
* Job Table definitions.
*
* Each job has several things associated with it:
* 1) The process id of the child shell
* 2) The graph node describing the target being made by this job
* 3) State associated to latest command run
* 5) A word of flags which determine how the module handles errors,
* echoing, etc. for the job
*
* The job "table" is kept as a linked Lst in 'jobs', with the number of
* active jobs maintained in the 'nJobs' variable. At no time will this
* exceed the value of 'maxJobs', initialized by the Job_Init function.
*
* When a job is finished, the Make_Update function is called on each of the
* parents of the node which was just remade. This takes care of the upward
* traversal of the dependency graph.
*/
struct Job_ {
struct Job_ *next; /* singly linked list */
pid_t pid; /* Current command process id */
Location *location;
int exit_type; /* last child exit or signal */
#define JOB_EXIT_OKAY 0
#define JOB_EXIT_BAD 1
#define JOB_SIGNALED 2
int code; /* exit status or signal code */
LstNode next_cmd; /* Next command to run */
char *cmd; /* Last command run */
GNode *node; /* Target of this job */
unsigned short flags;
#define JOB_SILENT 0x001 /* Command was silent */
#define JOB_IS_EXPENSIVE 0x002
#define JOB_LOST 0x004 /* sent signal to non-existing pid ? */
#define JOB_ERRCHECK 0x008 /* command wants errcheck */
};
/* Continuation-style running commands for the parallel engine */
/* job_attach_node(job, node):
* attach a job to an allocated node, to be able to run commands
*/
extern void job_attach_node(Job *, GNode *);
/* finished = job_run_next(job):
* run next command for a job attached to a node.
* return true when job is finished.
*/
extern bool job_run_next(Job *);
/* job_handle_status(job, waitstatus):
* process a wait return value corresponding to a job, display
* messages and set job status accordingly.
*/
extern void job_handle_status(Job *, int);
#endif
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