/* $NetBSD: job.h,v 1.33 2006/10/11 07:01:44 dsl Exp $ */ /* * Copyright (c) 1988, 1989, 1990 The Regents of the University of California. * 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 */ /* * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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 */ /*- * job.h -- * Definitions pertaining to the running of jobs in parallel mode. */ #ifndef _JOB_H_ #define _JOB_H_ #define TMPPAT "/tmp/makeXXXXXX" #ifdef USE_SELECT /* * Emulate poll() in terms of select(). This is not a complete * emulation but it is sufficient for make's purposes. */ #define poll emul_poll #define pollfd emul_pollfd struct emul_pollfd { int fd; short events; short revents; }; #define POLLIN 0x0001 #define POLLOUT 0x0004 int emul_poll(struct pollfd *fd, int nfd, int timeout); #endif /* * The POLL_MSEC constant determines the maximum number of milliseconds spent * in poll before coming out to see if a child has finished. */ #define POLL_MSEC 5000 /*- * 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) A LstNode for the first command to be saved after the job * completes. This is NILLNODE if there was no "..." in the job's * commands. * 4) An FILE* for writing out the commands. This is only * used before the job is actually started. * 5) The output is being caught via a pipe and * the descriptors of our pipe, an array in which output is line * buffered and the current position in that buffer are all * maintained for each job. * 6) A word of flags which determine how the module handles errors, * echoing, etc. for the job * * 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 pollfd; #define JOB_BUFSIZE 1024 typedef struct Job { int pid; /* The child's process ID */ GNode *node; /* The target the child is making */ LstNode tailCmds; /* The node of the first command to be * saved when the job has been run */ FILE *cmdFILE; /* When creating the shell script, this is * where the commands go */ int exit_status; /* from wait4() in signal handler */ char job_state; /* status of the job entry */ #define JOB_ST_FREE 0 /* Job is available */ #define JOB_ST_SETUP 1 /* Job is allocated but otherwise invalid */ #define JOB_ST_RUNNING 3 /* Job is running, pid valid */ #define JOB_ST_FINISHED 4 /* Job is done (ie after SIGCHILD) */ char job_suspended; short flags; /* Flags to control treatment of job */ #define JOB_IGNERR 0x001 /* Ignore non-zero exits */ #define JOB_SILENT 0x002 /* no output */ #define JOB_SPECIAL 0x004 /* Target is a special one. i.e. run it locally * if we can't export it and maxLocal is 0 */ #define JOB_IGNDOTS 0x008 /* Ignore "..." lines when processing * commands */ #define JOB_TRACED 0x400 /* we've sent 'set -x' */ int jobPipe[2]; /* Pipe for readind output from job */ struct pollfd *inPollfd; /* pollfd associated with inPipe */ char outBuf[JOB_BUFSIZE + 1]; /* Buffer for storing the output of the * job, line by line */ int curPos; /* Current position in op_outBuf */ } Job; #define inPipe jobPipe[0] #define outPipe jobPipe[1] /*- * Shell Specifications: * Each shell type has associated with it the following information: * 1) The string which must match the last character of the shell name * for the shell to be considered of this type. The longest match * wins. * 2) A command to issue to turn off echoing of command lines * 3) A command to issue to turn echoing back on again * 4) What the shell prints, and its length, when given the echo-off * command. This line will not be printed when received from the shell * 5) A boolean to tell if the shell has the ability to control * error checking for individual commands. * 6) The string to turn this checking on. * 7) The string to turn it off. * 8) The command-flag to give to cause the shell to start echoing * commands right away. * 9) The command-flag to cause the shell to Lib_Exit when an error is * detected in one of the commands. * * Some special stuff goes on if a shell doesn't have error control. In such * a case, errCheck becomes a printf template for echoing the command, * should echoing be on and ignErr becomes another printf template for * executing the command while ignoring the return status. Finally errOut * is a printf template for running the command and causing the shell to * exit on error. If any of these strings are empty when hasErrCtl is FALSE, * the command will be executed anyway as is and if it causes an error, so be * it. Any templates setup to echo the command will escape any '$ ` \ "'i * characters in the command string to avoid common problems with * echo "%s\n" as a template. */ typedef struct Shell { const char *name; /* the name of the shell. For Bourne and C * shells, this is used only to find the * shell description when used as the single * source of a .SHELL target. For user-defined * shells, this is the full path of the shell. */ Boolean hasEchoCtl; /* True if both echoOff and echoOn defined */ const char *echoOff; /* command to turn off echo */ const char *echoOn; /* command to turn it back on again */ const char *noPrint; /* command to skip when printing output from * shell. This is usually the command which * was executed to turn off echoing */ int noPLen; /* length of noPrint command */ Boolean hasErrCtl; /* set if can control error checking for * individual commands */ const char *errCheck; /* string to turn error checking on */ const char *ignErr; /* string to turn off error checking */ const char *errOut; /* string to use for testing exit code */ const char *newline; /* string literal that results in a newline * character when it appears outside of any * 'quote' or "quote" characters */ char commentChar; /* character used by shell for comment lines */ /* * command-line flags */ const char *echo; /* echo commands */ const char *exit; /* exit on error */ } Shell; extern const char *shellPath; extern const char *shellName; extern int jobTokensRunning; /* tokens currently "out" */ extern int maxJobs; /* Max jobs we can run */ void Shell_Init(void); const char *Shell_GetNewline(void); void Job_Touch(GNode *, Boolean); Boolean Job_CheckCommands(GNode *, void (*abortProc )(const char *, ...)); #define CATCH_BLOCK 1 void Job_CatchChildren(void); void Job_CatchOutput(void); void Job_Make(GNode *); void Job_Init(void); Boolean Job_Full(void); Boolean Job_Empty(void); ReturnStatus Job_ParseShell(char *); int Job_Finish(void); void Job_End(void); void Job_Wait(void); void Job_AbortAll(void); void JobFlagForMigration(int); void Job_TokenReturn(void); Boolean Job_TokenWithdraw(void); void Job_ServerStart(int, int, int); #endif /* _JOB_H_ */