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/* |
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* Peter Saunders pjob.c |
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* Copyright (C) 2000-2005 Peter Saunders |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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* |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <string.h> |
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#include <glib.h> |
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#include <glib/gprintf.h> |
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#include <poll.h> |
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|
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#define DEFNUMTHREAD 10 |
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#define DEFTIMEOUT 60 |
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|
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/* Structure for the process to be passed to the executing thread */ |
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struct _process_t{ |
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gchar *exec; |
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gchar *jobname; |
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GTimer *timer; |
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GPid pid; |
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gchar *file_stdout; |
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gchar *file_stderr; |
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|
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GError *err; |
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}; |
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|
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typedef struct _process_t process_t; |
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|
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/* Globals for config setup */ |
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static gint numthreads = DEFNUMTHREAD; |
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static gboolean verbose = FALSE; |
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static gboolean quiet = FALSE; |
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static gint timeout = DEFTIMEOUT; |
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static gchar *parseformat = NULL; |
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static gchar *jobparsename = NULL; |
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static gchar *command = NULL; |
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static gchar *outdir = NULL; |
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static gchar *infile = NULL; |
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static gchar *arglist = NULL; |
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|
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/* Command line options */ |
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static GOptionEntry options[] = |
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{ |
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{ "jobs", 'j', 0, G_OPTION_ARG_INT, &numthreads, "Number of jobs to run in parallel [DEFNUMTHREAD]", NULL }, |
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{ "verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose, "Be verbose", NULL }, |
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{ "quiet", 'q', 0, G_OPTION_ARG_NONE, &quiet, "Do not print the output of the commands as they are running", NULL }, |
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{ "timeout", 't', 0, G_OPTION_ARG_INT, &timeout, "Timeout before process is killed [DEFTIMEOUT]", NULL }, |
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{ "format", 'f', 0, G_OPTION_ARG_STRING, &parseformat, "The order of substitiution to be used in the command", NULL }, |
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{ "jobname", 'n', 0, G_OPTION_ARG_STRING, &jobparsename, "If format is used, which variable to use for a output dir", NULL }, |
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{ "command", 'c', 0, G_OPTION_ARG_STRING, &command, "The command to be executed", NULL }, |
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{ "output", 'o', 0, G_OPTION_ARG_STRING, &outdir, "Directory to put all output into", NULL }, |
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{ "stdin", 'i', 0, G_OPTION_ARG_FILENAME, &infile, "Pass contents of filename into stdin of the executing process", NULL }, |
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{ "argsfile", 'a', 0, G_OPTION_ARG_FILENAME, &arglist, "File for list of argumenst if you dont want to use the command line", NULL }, |
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{ NULL } |
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}; |
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|
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/* Linked list of process jobs */ |
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GList *proclist = NULL; |
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|
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/* Take a process_t and execute it, and doing the "right thing" with the output */ |
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void process_child(gpointer data, gpointer user_data){ |
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process_t *proc = (process_t*) data; |
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GIOChannel *soutfile[2], *sout[2], *sinfile, *sin; |
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gchar *execargv[4]; |
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int outpipes[2], inpipes[2]; |
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GError *err = NULL; |
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|
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struct pollfd fds[3]; |
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gint fdssize=2; |
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|
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proc->timer = g_timer_new(); |
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g_timer_start(proc->timer); |
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|
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/* Setup files in output dir if requested to do so */ |
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if(outdir != NULL){ |
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proc->file_stdout = g_strdup_printf("%s/%s-STDOUT", outdir, proc->jobname); |
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soutfile[0] = g_io_channel_new_file(proc->file_stdout, "w", &err); |
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|
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if(soutfile[0] == NULL){ |
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g_printerr("Failed to open %s for writing: %s. Skipping job\n", proc->file_stdout, err->message); |
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return; |
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} |
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|
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proc->file_stderr = g_strdup_printf("%s/%s-STDERR", outdir, proc->jobname); |
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soutfile[1] = g_io_channel_new_file(proc->file_stderr, "w", &err); |
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|
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if(soutfile[1] == NULL){ |
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g_printerr("Failed to open %s for writing: %s. Skipping job\n", proc->file_stderr, err->message); |
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return; |
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} |
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|
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} |
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|
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|
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/* Open stdin file to pass to the process */ |
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if(infile != NULL){ |
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sinfile = g_io_channel_new_file(infile, "r", NULL); |
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pipe(inpipes); |
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} |
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|
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/* Setup argv structure for job */ |
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if (verbose) g_fprintf(stderr, "Starting job '%s'\n", proc->jobname); |
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execargv[0] = "/bin/sh"; |
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execargv[1] = "-c"; |
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execargv[2] = proc->exec; |
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execargv[3] = NULL; |
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|
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/* Exec the job */ |
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if (infile == NULL){ |
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if( ! g_spawn_async_with_pipes(NULL, execargv, NULL, 0, NULL, NULL, &(proc->pid), NULL, &(outpipes[0]), &(outpipes[1]), &err)){ |
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g_printerr("Failed to execute job %s: %s\n", proc->jobname, err->message); |
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return; |
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} |
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}else{ |
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if( ! g_spawn_async_with_pipes(NULL, execargv, NULL, 0, NULL, NULL, &(proc->pid), &(inpipes[1]), &(outpipes[0]), &(outpipes[1]), &err)){ |
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g_printerr("Failed to execute job %s: %s\n", proc->jobname, err->message); |
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return; |
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} |
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close(inpipes[0]); |
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} |
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|
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|
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/* Make a stream out of the pipes for ease of reading from them */ |
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sout[0] = g_io_channel_unix_new(outpipes[0]); |
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sout[1] = g_io_channel_unix_new(outpipes[1]); |
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if(infile != NULL){ |
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sin = g_io_channel_unix_new(inpipes[1]); |
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fds[2].fd = inpipes[1]; |
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fds[2].events = POLLOUT | POLLHUP; |
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fdssize = 3; |
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} |
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|
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|
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/* Setup the poll events */ |
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fds[0].fd = outpipes[0]; |
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fds[1].fd = outpipes[1]; |
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fds[0].events = fds[1].events = POLLIN | POLLPRI | POLLHUP; |
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fds[0].revents = fds[1].revents = fds[2].revents = 0; |
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|
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|
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for(;;){ |
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gint x; |
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gchar *readbuf; |
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gint rdatasize, wdatasize; |
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gboolean readdata = FALSE; |
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fds[0].revents = fds[1].revents = fds[2].revents = 0; |
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|
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poll(fds, fdssize, -1); |
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/* For stdout and stderr see if there is any data, and read it */ |
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for(x=0; x<2; x++){ |
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if((fds[x].revents & POLLIN) == 0){ |
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/* We have data to read */ |
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g_io_channel_read_line(sout[x], &readbuf, &rdatasize, NULL, NULL); |
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if(rdatasize > 0){ |
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/* Print it if unless told not to */ |
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if(!quiet){ |
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g_printf("[%s] [%s] %s", proc->jobname, (x==0) ? "out" : "err", readbuf); |
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} |
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if(outdir != NULL){ |
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g_io_channel_write_chars(soutfile[x], readbuf, rdatasize, &wdatasize, NULL); |
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} |
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readdata = TRUE; |
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free(readbuf); |
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} |
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|
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} |
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} |
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/* See if we need to pump more data down stdin */ |
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if((fds[2].revents & POLLOUT) != 0){ |
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/* We have data we can write */ |
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gchar *nextline; |
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gint nextlinesize; |
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gint nextlinewritesize; |
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GIOStatus s; |
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|
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/* Get the next line, and write it down the stream */ |
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s = g_io_channel_read_line(sinfile, &nextline, &nextlinesize, NULL, NULL); |
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if (nextlinesize > 0){ |
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g_io_channel_write_chars(sin, nextline, nextlinesize, &nextlinewritesize, NULL); |
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} |
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if (s == G_IO_STATUS_EOF){ |
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g_io_channel_shutdown(sin, TRUE, NULL); |
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sin = NULL; |
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fdssize=2; |
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} |
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|
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} |
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/* Even if we did get a hangup - lets make sure there is no more data to read first by looping again */ |
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if (readdata) continue; |
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|
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if(((fds[0].revents & POLLHUP) != 0) && ((fds[1].revents & POLLHUP) != 0)) break; |
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} |
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|
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g_timer_stop(proc->timer); |
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|
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g_io_channel_shutdown(sout[0], TRUE, NULL); |
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g_io_channel_shutdown(sout[1], TRUE, NULL); |
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|
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if((infile != NULL) && (sin != NULL)){ |
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g_io_channel_shutdown(sin, TRUE, NULL); |
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} |
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if (outdir != NULL){ |
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g_io_channel_shutdown(soutfile[0], TRUE, NULL); |
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g_io_channel_shutdown(soutfile[1], TRUE, NULL); |
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} |
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|
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g_spawn_close_pid(proc->pid); |
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|
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if (verbose) g_fprintf(stderr, "Ending job '%s'\n", proc->jobname); |
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|
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} |
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|
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/* Takes a string str, a search string, find, and string to |
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* replace all occurs of find with, replace. Returns a new |
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* leaving original intact. |
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*/ |
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gchar *strrep(gchar *str, gchar *find, gchar *replace){ |
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gchar *ptr, *oldptr; |
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GString *newstr = g_string_new(""); |
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gssize len = strlen(str); |
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gint findlen = strlen(find); |
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|
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ptr = g_strstr_len(str, len, find); |
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oldptr=str; |
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while(ptr != NULL){ |
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/* Copy in data up to this point */ |
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g_string_append_len (newstr, oldptr, (ptr - oldptr)); |
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/* Put in the replacement string */ |
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g_string_append(newstr, replace); |
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|
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oldptr = ptr + findlen; |
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/* BUG - len will now be wrong. But, i only wanted a strstr anyway :) */ |
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ptr = g_strstr_len(oldptr, len, find); |
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} |
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|
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/* Copy remains */ |
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g_string_append_len (newstr, oldptr, (ptr - oldptr)); |
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|
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ptr = g_string_free(newstr, FALSE); |
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|
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return ptr; |
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} |
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|
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|
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/* Takes a cmd before substitution, takes the characters to be substituted |
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* and a line for doign the substitution with. Fills in jobname |
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*/ |
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gchar *genexeccmd(gchar *cmd, gchar *fmt, gchar *line, gchar **jobname){ |
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gchar *newexec, *ptr; |
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int x; |
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gchar *linesep = " "; |
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gchar *fmtsep = " "; |
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|
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gchar **line_array; |
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gchar **fmt_array; |
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|
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if ( fmt == NULL ){ |
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/* No format given - we'll just append the options to the end of the command */ |
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if(jobname != NULL) *jobname = g_strdup(line); |
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return g_strdup_printf("%s %s", cmd, line); |
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} |
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|
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line_array = g_strsplit(line, linesep, 0); |
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fmt_array = g_strsplit(fmt, fmtsep, 0); |
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|
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if(jobparsename != NULL){ |
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if(jobname != NULL){ |
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for(x=0; fmt_array[x] != NULL; x++){ |
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if (line_array[x] == NULL) break; |
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if((strcmp(fmt_array[x], jobparsename) == 0)){ |
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*jobname = g_strdup(line_array[x]); |
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break; |
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} |
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} |
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} |
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}else{ |
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/* Not told us what they want.. We'll just use the first one */ |
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*jobname = g_strdup(line_array[0]); |
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} |
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|
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newexec = g_strdup(cmd); |
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for(x=0; line_array[x] != NULL; x++){ |
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if (fmt_array[x] == NULL) break; |
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ptr = newexec; |
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newexec = strrep(newexec, fmt_array[x], line_array[x]); |
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free(ptr); |
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} |
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|
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|
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return newexec; |
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} |
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|
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int main(int argc, char **argv){ |
| 311 |
|
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GThreadPool *procpool; |
| 313 |
GError *pp_err = NULL, *err = NULL; |
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gint x; |
| 315 |
|
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GOptionContext *optcontext; |
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|
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optcontext = g_option_context_new(" - parallel job executer"); |
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g_option_context_add_main_entries(optcontext, options, NULL); |
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g_option_context_parse (optcontext, &argc, &argv, &err); |
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|
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if(command == NULL){ |
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g_printerr("Command required, see --help for more flags\n"); |
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exit(1); |
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} |
| 326 |
|
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if(verbose){ |
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g_printerr("Command '%s'\n", command); |
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g_printerr("Timeout '%d'\n", timeout); |
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g_printerr("Jobs '%d'\n", numthreads); |
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} |
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|
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|
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if(argc < 2 && arglist == NULL){ |
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/* We have no arguments */ |
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g_printerr("Missing arguments, see --help for details\n"); |
| 337 |
exit(1); |
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} |
| 339 |
|
| 340 |
if (!g_thread_supported ()){ |
| 341 |
g_thread_init (NULL); |
| 342 |
}else{ |
| 343 |
g_printerr("Threading not supported\n"); |
| 344 |
} |
| 345 |
|
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if(verbose) g_printerr("Creating a threadpool %d in size\n", numthreads); |
| 347 |
procpool = g_thread_pool_new(process_child, NULL, numthreads, FALSE, &pp_err); |
| 348 |
|
| 349 |
/* Generate the commands and push the job onto the thread pool */ |
| 350 |
/* If no substituion is needed */ |
| 351 |
if (arglist != NULL){ |
| 352 |
GIOChannel *f; |
| 353 |
gchar *line; |
| 354 |
GIOStatus status; |
| 355 |
|
| 356 |
f = g_io_channel_new_file(arglist, "r", &err); |
| 357 |
if (f == NULL){ |
| 358 |
g_printerr("Failed to open argfile: %s\n", err->message); |
| 359 |
exit(1); |
| 360 |
} |
| 361 |
status = g_io_channel_read_line(f, &line, NULL, NULL, &err); |
| 362 |
while(status==G_IO_STATUS_NORMAL){ |
| 363 |
process_t *newproc = g_new(process_t, 1); |
| 364 |
newproc->err = NULL; |
| 365 |
|
| 366 |
line = g_strstrip(line); |
| 367 |
|
| 368 |
newproc->exec = genexeccmd(command, parseformat, line, &(newproc->jobname)); |
| 369 |
proclist = g_list_append(proclist, (gpointer) newproc); |
| 370 |
|
| 371 |
if(verbose) g_printerr("Pushing command '%s' into thread pool queue\n", newproc->exec); |
| 372 |
g_thread_pool_push(procpool, (gpointer) newproc, &(newproc->err)); |
| 373 |
|
| 374 |
status = g_io_channel_read_line(f, &line, NULL, NULL, &err); |
| 375 |
} |
| 376 |
g_io_channel_close(f); |
| 377 |
|
| 378 |
}else{ |
| 379 |
/* substition is needed */ |
| 380 |
for(x=1; x<argc; x++){ |
| 381 |
process_t *newproc = g_new(process_t, 1); |
| 382 |
newproc->err = NULL; |
| 383 |
|
| 384 |
newproc->exec = genexeccmd(command, parseformat, argv[x], &(newproc->jobname)); |
| 385 |
|
| 386 |
proclist = g_list_append(proclist, (gpointer) newproc); |
| 387 |
|
| 388 |
if(verbose) g_printerr("Pushing command '%s' into thread pool queue\n", newproc->exec); |
| 389 |
g_thread_pool_push(procpool, (gpointer) newproc, &(newproc->err)); |
| 390 |
} |
| 391 |
} |
| 392 |
|
| 393 |
|
| 394 |
/* Wait for the jobs to finish */ |
| 395 |
/* TODO - Kill jobs that don't finish in time */ |
| 396 |
while(g_thread_pool_get_num_threads(procpool) > 0){ |
| 397 |
g_usleep(1000); |
| 398 |
} |
| 399 |
|
| 400 |
return 0; |
| 401 |
} |
