1 /* $NetBSD: job.h,v 1.78 2023/12/19 19:33:39 rillig Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 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. 21 * 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 32 * SUCH DAMAGE. 33 * 34 * from: @(#)job.h 8.1 (Berkeley) 6/6/93 35 */ 36 37 /* 38 * Copyright (c) 1988, 1989 by Adam de Boor 39 * Copyright (c) 1989 by Berkeley Softworks 40 * All rights reserved. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * Adam de Boor. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 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. 60 * 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 71 * SUCH DAMAGE. 72 * 73 * from: @(#)job.h 8.1 (Berkeley) 6/6/93 74 */ 75 76 /* Run jobs in parallel mode. */ 77 78 #ifndef MAKE_JOB_H 79 #define MAKE_JOB_H 80 81 #define TMPPAT "makeXXXXXX" /* relative to tmpdir */ 82 83 #ifdef USE_SELECT 84 /* 85 * Emulate poll() in terms of select(). This is not a complete 86 * emulation but it is sufficient for make's purposes. 87 */ 88 89 #define poll emul_poll 90 #define pollfd emul_pollfd 91 92 struct emul_pollfd { 93 int fd; 94 short events; 95 short revents; 96 }; 97 98 #define POLLIN 0x0001 99 #define POLLOUT 0x0004 100 101 int emul_poll(struct pollfd *, int, int); 102 #endif 103 104 /* 105 * The POLL_MSEC constant determines the maximum number of milliseconds spent 106 * in poll before coming out to see if a child has finished. 107 */ 108 #define POLL_MSEC 5000 109 110 struct pollfd; 111 112 113 #ifdef USE_META 114 # include "meta.h" 115 #endif 116 117 typedef enum JobStatus { 118 JOB_ST_FREE = 0, /* Job is available */ 119 JOB_ST_SET_UP = 1, /* Job is allocated but otherwise invalid */ 120 /* XXX: What about the 2? */ 121 JOB_ST_RUNNING = 3, /* Job is running, pid valid */ 122 JOB_ST_FINISHED = 4 /* Job is done (ie after SIGCHILD) */ 123 } JobStatus; 124 125 /* 126 * A Job manages the shell commands that are run to create a single target. 127 * Each job is run in a separate subprocess by a shell. Several jobs can run 128 * in parallel. 129 * 130 * The shell commands for the target are written to a temporary file, 131 * then the shell is run with the temporary file as stdin, and the output 132 * of that shell is captured via a pipe. 133 * 134 * When a job is finished, Make_Update updates all parents of the node 135 * that was just remade, marking them as ready to be made next if all 136 * other dependencies are finished as well. 137 */ 138 typedef struct Job { 139 /* The process ID of the shell running the commands */ 140 int pid; 141 142 /* The target the child is making */ 143 GNode *node; 144 145 /* 146 * If one of the shell commands is "...", all following commands are 147 * delayed until the .END node is made. This list node points to the 148 * first of these commands, if any. 149 */ 150 StringListNode *tailCmds; 151 152 /* This is where the shell commands go. */ 153 FILE *cmdFILE; 154 155 int exit_status; /* from wait4() in signal handler */ 156 157 JobStatus status; 158 159 bool suspended; 160 161 /* Ignore non-zero exits */ 162 bool ignerr; 163 /* Output the command before or instead of running it. */ 164 bool echo; 165 /* Target is a special one. */ 166 bool special; 167 168 int inPipe; /* Pipe for reading output from job */ 169 int outPipe; /* Pipe for writing control commands */ 170 struct pollfd *inPollfd; /* pollfd associated with inPipe */ 171 172 #define JOB_BUFSIZE 1024 173 /* Buffer for storing the output of the job, line by line. */ 174 char outBuf[JOB_BUFSIZE + 1]; 175 size_t curPos; /* Current position in outBuf. */ 176 177 #ifdef USE_META 178 struct BuildMon bm; 179 #endif 180 } Job; 181 182 extern const char *shellPath; 183 extern const char *shellName; 184 extern char *shellErrFlag; 185 186 extern int jobTokensRunning; /* tokens currently "out" */ 187 188 void Shell_Init(void); 189 const char *Shell_GetNewline(void) MAKE_ATTR_USE; 190 void Job_Touch(GNode *, bool); 191 bool Job_CheckCommands(GNode *, void (*abortProc)(const char *, ...)) 192 MAKE_ATTR_USE; 193 void Job_CatchChildren(void); 194 void Job_CatchOutput(void); 195 void Job_Make(GNode *); 196 void Job_Init(void); 197 bool Job_ParseShell(char *) MAKE_ATTR_USE; 198 int Job_Finish(void); 199 void Job_End(void); 200 void Job_Wait(void); 201 void Job_AbortAll(void); 202 void Job_TokenReturn(void); 203 bool Job_TokenWithdraw(void) MAKE_ATTR_USE; 204 void Job_ServerStart(int, int, int); 205 void Job_SetPrefix(void); 206 bool Job_RunTarget(const char *, const char *); 207 void Job_FlagsToString(const Job *, char *, size_t); 208 int Job_TempFile(const char *, char *, size_t) MAKE_ATTR_USE; 209 210 #endif 211