Annotation of src/usr.bin/make/engine.h, Revision 1.13
1.1 espie 1: #ifndef ENGINE_H
2: #define ENGINE_H
1.13 ! espie 3: /* $OpenBSD: engine.h,v 1.12 2012/10/18 17:54:43 espie Exp $ */
1.1 espie 4:
5: /*
6: * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
7: * Copyright (c) 1988, 1989 by Adam de Boor
8: * Copyright (c) 1989 by Berkeley Softworks
9: * All rights reserved.
10: *
11: * This code is derived from software contributed to Berkeley by
12: * Adam de Boor.
13: *
14: * Redistribution and use in source and binary forms, with or without
15: * modification, are permitted provided that the following conditions
16: * are met:
17: * 1. Redistributions of source code must retain the above copyright
18: * notice, this list of conditions and the following disclaimer.
19: * 2. Redistributions in binary form must reproduce the above copyright
20: * notice, this list of conditions and the following disclaimer in the
21: * documentation and/or other materials provided with the distribution.
22: * 3. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: *
38: * from: @(#)job.h 8.1 (Berkeley) 6/6/93
39: */
40:
1.10 espie 41: /* ok = node_find_valid_commands(node);
1.1 espie 42: * verify the integrity of a node's commands, pulling stuff off
1.2 espie 43: * .DEFAULT and other places if necessary.
1.1 espie 44: */
1.10 espie 45: extern bool node_find_valid_commands(GNode *);
1.13 ! espie 46:
! 47: /* node_failure(gn);
! 48: * indicate we don't know how to make gn.
! 49: * may continue with -k or if node was optional.
! 50: */
1.10 espie 51: extern void node_failure(GNode *);
1.13 ! espie 52:
1.4 espie 53: /* Job_Touch(node);
1.1 espie 54: * touch the path corresponding to a node or update the corresponding
55: * archive object.
56: */
1.4 espie 57: extern void Job_Touch(GNode *);
1.13 ! espie 58:
1.1 espie 59: /* Make_TimeStamp(parent, child);
60: * ensure parent is at least as recent as child.
61: */
62: extern void Make_TimeStamp(GNode *, GNode *);
1.13 ! espie 63:
1.1 espie 64: /* Make_HandleUse(user_node, usee_node);
65: * let user_node inherit the commands from usee_node
66: */
67: extern void Make_HandleUse(GNode *, GNode *);
68:
69: /* old = Make_OODate(node);
70: * check if a given node is out-of-date.
71: */
72: extern bool Make_OODate(GNode *);
1.13 ! espie 73:
1.1 espie 74: /* Make_DoAllVar(node);
75: * fill all dynamic variables for a node.
76: */
77: extern void Make_DoAllVar(GNode *);
1.3 espie 78:
1.13 ! espie 79: /* status = run_gnode(gn):
! 80: * fully run all commands of a node for compat mode.
! 81: */
1.10 espie 82: extern int run_gnode(GNode *);
83:
84: /*-
85: * Job Table definitions.
86: *
87: * Each job has several things associated with it:
88: * 1) The process id of the child shell
89: * 2) The graph node describing the target being made by this job
90: * 3) State associated to latest command run
91: * 5) A word of flags which determine how the module handles errors,
92: * echoing, etc. for the job
93: *
94: * The job "table" is kept as a linked Lst in 'jobs', with the number of
95: * active jobs maintained in the 'nJobs' variable. At no time will this
96: * exceed the value of 'maxJobs', initialized by the Job_Init function.
97: *
98: * When a job is finished, the Make_Update function is called on each of the
99: * parents of the node which was just remade. This takes care of the upward
100: * traversal of the dependency graph.
101: */
102: struct Job_ {
103: struct Job_ *next; /* singly linked list */
104: pid_t pid; /* Current command process id */
105: Location *location;
106: int exit_type; /* last child exit or signal */
107: #define JOB_EXIT_OKAY 0
108: #define JOB_EXIT_BAD 1
109: #define JOB_SIGNALED 2
110: int code; /* exit status or signal code */
111: LstNode next_cmd; /* Next command to run */
112: char *cmd; /* Last command run */
113: GNode *node; /* Target of this job */
114: unsigned short flags;
115: #define JOB_SILENT 0x001 /* Command was silent */
116: #define JOB_IS_EXPENSIVE 0x002
1.11 espie 117: #define JOB_LOST 0x004 /* sent signal to non-existing pid ? */
1.10 espie 118: #define JOB_ERRCHECK 0x008 /* command wants errcheck */
119: };
120:
1.13 ! espie 121: /* Continuation-style running commands for the parallel engine */
! 122:
! 123: /* job_attach_node(job, node):
! 124: * attach a job to an allocated node, to be able to run commands
! 125: */
! 126: extern void job_attach_node(Job *, GNode *);
! 127:
! 128: /* finished = job_run_next(job):
! 129: * run next command for a job attached to a node.
! 130: * return true when job is finished.
! 131: */
1.10 espie 132: extern bool job_run_next(Job *);
1.3 espie 133:
1.13 ! espie 134: /* job_handle_status(job, waitstatus):
! 135: * process a wait return value corresponding to a job, display
! 136: * messages and set job status accordingly.
! 137: */
1.10 espie 138: extern void job_handle_status(Job *, int);
1.3 espie 139:
1.1 espie 140: #endif
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