/* * Copyright (c) 1988, 1989, 1990, 1993 * The Regents of the University of California. All rights reserved. * 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. * * @(#)job.h 8.1 (Berkeley) 6/6/93 * $FreeBSD$ */ /*- * job.h -- * Definitions pertaining to the running of jobs in parallel mode. * Exported from job.c for the use of remote-execution modules. */ #ifndef _JOB_H_ #define _JOB_H_ #define TMPPAT "/tmp/makeXXXXXXXXXX" #ifndef USE_KQUEUE /* * The SEL_ constants determine the maximum amount of time spent in select * before coming out to see if a child has finished. SEL_SEC is the number of * seconds and SEL_USEC is the number of micro-seconds */ #define SEL_SEC 2 #define SEL_USEC 0 #endif /* !USE_KQUEUE */ /*- * 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 NULL 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) A union of things used for handling the shell's output. Different * parts of the union are used based on the value of the usePipes * flag. If it is true, 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. If, on the other hand, usePipes is false, * the output is routed to a temporary file and all that is kept * is the name of the file and the descriptor open to the file. * 6) 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. */ #define JOB_BUFSIZE 1024 typedef struct Job { int pid; /* The child's process ID */ char tfile[sizeof(TMPPAT)]; /* Temporary file to use for job */ 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 */ 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_FIRST 0x020 /* Job is first job for the node */ #define JOB_RESTART 0x080 /* Job needs to be completely restarted */ #define JOB_RESUME 0x100 /* Job needs to be resumed b/c it stopped, * for some reason */ #define JOB_CONTINUING 0x200 /* We are in the process of resuming this job. * Used to avoid infinite recursion between * JobFinish and JobRestart */ union { struct { int op_inPipe; /* Input side of pipe associated * with job's output channel */ int op_outPipe; /* Output side of pipe associated with * job's output channel */ char op_outBuf[JOB_BUFSIZE + 1]; /* Buffer for storing the output of the * job, line by line */ int op_curPos; /* Current position in op_outBuf */ } o_pipe; /* data used when catching the output via * a pipe */ struct { char of_outFile[sizeof(TMPPAT)]; /* Name of file to which shell output * was rerouted */ int of_outFd; /* Stream open to the output * file. Used to funnel all * from a single job to one file * while still allowing * multiple shell invocations */ } o_file; /* Data used when catching the output in * a temporary file */ } output; /* Data for tracking a shell's output */ } Job; #define outPipe output.o_pipe.op_outPipe #define inPipe output.o_pipe.op_inPipe #define outBuf output.o_pipe.op_outBuf #define curPos output.o_pipe.op_curPos #define outFile output.o_file.of_outFile #define outFd output.o_file.of_outFd /*- * 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. If either of these * strings is empty when hasErrCtl is FALSE, the command will be executed * anyway as is and if it causes an error, so be it. */ typedef struct Shell { 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 */ char *echoOff; /* command to turn off echo */ char *echoOn; /* command to turn it back on again */ 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 */ char *errCheck; /* string to turn error checking on */ char *ignErr; /* string to turn off error checking */ /* * command-line flags */ char *echo; /* echo commands */ char *exit; /* exit on error */ } Shell; extern char *shellPath; extern char *shellName; extern int maxJobs; /* Number of jobs that may run */ void Shell_Init(void); void Job_Touch(GNode *, Boolean); Boolean Job_CheckCommands(GNode *, void (*abortProc)(const char *, ...)); void Job_CatchChildren(Boolean); void Job_CatchOutput(void); void Job_Make(GNode *); void Job_Init(int); Boolean Job_Full(void); Boolean Job_Empty(void); ReturnStatus Job_ParseShell(char *); int Job_Finish(void); void Job_Wait(void); void Job_AbortAll(void); #endif /* _JOB_H_ */