1 /* $NetBSD: job.h,v 1.77 2021/12/15 12:58:01 rillig Exp $ */
4 * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
7 * This code is derived from software contributed to Berkeley by
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * from: @(#)job.h 8.1 (Berkeley) 6/6/93
38 * Copyright (c) 1988, 1989 by Adam de Boor
39 * Copyright (c) 1989 by Berkeley Softworks
40 * All rights reserved.
42 * This code is derived from software contributed to Berkeley by
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
48 * 1. Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
50 * 2. Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
53 * 3. All advertising materials mentioning features or use of this software
54 * must display the following acknowledgement:
55 * This product includes software developed by the University of
56 * California, Berkeley and its contributors.
57 * 4. Neither the name of the University nor the names of its contributors
58 * may be used to endorse or promote products derived from this software
59 * without specific prior written permission.
61 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
62 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
63 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
64 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
65 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
66 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
67 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
68 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
69 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
70 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
73 * from: @(#)job.h 8.1 (Berkeley) 6/6/93
77 * Running of jobs in parallel mode.
83 #define TMPPAT "makeXXXXXX" /* relative to tmpdir */
87 * Emulate poll() in terms of select(). This is not a complete
88 * emulation but it is sufficient for make's purposes.
91 #define poll emul_poll
92 #define pollfd emul_pollfd
100 #define POLLIN 0x0001
101 #define POLLOUT 0x0004
103 int emul_poll(struct pollfd *, int, int);
107 * The POLL_MSEC constant determines the maximum number of milliseconds spent
108 * in poll before coming out to see if a child has finished.
110 #define POLL_MSEC 5000
119 typedef enum JobStatus {
120 JOB_ST_FREE = 0, /* Job is available */
121 JOB_ST_SET_UP = 1, /* Job is allocated but otherwise invalid */
122 /* XXX: What about the 2? */
123 JOB_ST_RUNNING = 3, /* Job is running, pid valid */
124 JOB_ST_FINISHED = 4 /* Job is done (ie after SIGCHILD) */
128 * A Job manages the shell commands that are run to create a single target.
129 * Each job is run in a separate subprocess by a shell. Several jobs can run
132 * The shell commands for the target are written to a temporary file,
133 * then the shell is run with the temporary file as stdin, and the output
134 * of that shell is captured via a pipe.
136 * When a job is finished, Make_Update updates all parents of the node
137 * that was just remade, marking them as ready to be made next if all
138 * other dependencies are finished as well.
141 /* The process ID of the shell running the commands */
144 /* The target the child is making */
148 * If one of the shell commands is "...", all following commands are
149 * delayed until the .END node is made. This list node points to the
150 * first of these commands, if any.
152 StringListNode *tailCmds;
154 /* This is where the shell commands go. */
157 int exit_status; /* from wait4() in signal handler */
163 /* Ignore non-zero exits */
165 /* Output the command before or instead of running it. */
167 /* Target is a special one. */
170 int inPipe; /* Pipe for reading output from job */
171 int outPipe; /* Pipe for writing control commands */
172 struct pollfd *inPollfd; /* pollfd associated with inPipe */
174 #define JOB_BUFSIZE 1024
175 /* Buffer for storing the output of the job, line by line. */
176 char outBuf[JOB_BUFSIZE + 1];
177 size_t curPos; /* Current position in outBuf. */
184 extern const char *shellPath;
185 extern const char *shellName;
186 extern char *shellErrFlag;
188 extern int jobTokensRunning; /* tokens currently "out" */
190 void Shell_Init(void);
191 const char *Shell_GetNewline(void) MAKE_ATTR_USE;
192 void Job_Touch(GNode *, bool);
193 bool Job_CheckCommands(GNode *, void (*abortProc)(const char *, ...))
195 void Job_CatchChildren(void);
196 void Job_CatchOutput(void);
197 void Job_Make(GNode *);
199 bool Job_ParseShell(char *) MAKE_ATTR_USE;
200 int Job_Finish(void);
203 void Job_AbortAll(void);
204 void Job_TokenReturn(void);
205 bool Job_TokenWithdraw(void) MAKE_ATTR_USE;
206 void Job_ServerStart(int, int, int);
207 void Job_SetPrefix(void);
208 bool Job_RunTarget(const char *, const char *);
209 void Job_FlagsToString(const Job *, char *, size_t);
210 int Job_TempFile(const char *, char *, size_t) MAKE_ATTR_USE;