projects/pjob/pjob.c

/*
 * Peter Saunders pjob.c
 * Copyright (C) 2000-2005 Peter Saunders
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <glib.h>
#include <glib/gprintf.h>
#include <poll.h>

#define DEFNUMTHREAD 10
#define DEFTIMEOUT 60

/* Structure for the process to be passed to the executing thread */
struct _process_t{
        gchar *exec;
        gchar *jobname;
        GTimer *timer;
        GPid pid;
        gchar *file_stdout;
        gchar *file_stderr;

        GError *err;
};

typedef struct _process_t process_t;

/* Globals for config setup */
static gint numthreads = DEFNUMTHREAD;
static gboolean verbose = FALSE;
static gboolean quiet = FALSE;
static gint timeout = DEFTIMEOUT;
static gchar *parseformat = NULL;
static gchar *jobparsename = NULL;
static gchar *command = NULL;
static gchar *outdir = NULL;
static gchar *infile = NULL;
static gchar *arglist = NULL;

/* Command line options */
static GOptionEntry options[] =
{
        { "jobs", 'j', 0, G_OPTION_ARG_INT, &numthreads, "Number of jobs to run in parallel [DEFNUMTHREAD]", NULL },
        { "verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose, "Be verbose", NULL },
        { "quiet", 'q', 0, G_OPTION_ARG_NONE, &quiet, "Do not print the output of the commands as they are running", NULL },
        { "timeout", 't', 0, G_OPTION_ARG_INT, &timeout, "Timeout before process is killed [DEFTIMEOUT]", NULL },
        { "format", 'f', 0, G_OPTION_ARG_STRING, &parseformat, "The order of substitiution to be used in the command", NULL },
        { "jobname", 'n', 0, G_OPTION_ARG_STRING, &jobparsename, "If format is used, which variable to use for a output dir", NULL },
        { "command", 'c', 0, G_OPTION_ARG_STRING, &command, "The command to be executed", NULL },
        { "output", 'o', 0, G_OPTION_ARG_STRING, &outdir, "Directory to put all output into", NULL },
        { "stdin", 'i', 0, G_OPTION_ARG_FILENAME, &infile, "Pass contents of filename into stdin of the executing process", NULL },
        { "argsfile", 'a', 0, G_OPTION_ARG_FILENAME, &arglist, "File for list of argumenst if you dont want to use the command line", NULL },
        { NULL }
};

/* Linked list of process jobs */
GList *proclist = NULL;

/* Take a process_t and execute it, and doing the "right thing" with the output */
void process_child(gpointer data, gpointer user_data){
        process_t *proc = (process_t*) data;
        GIOChannel *soutfile[2], *sout[2], *sinfile, *sin;
        gchar *execargv[4];
        int outpipes[2], inpipes[2];
        GError *err = NULL;

        struct pollfd fds[3];
        gint fdssize=2;

        proc->timer = g_timer_new();
        g_timer_start(proc->timer);

        /* Setup files in output dir if requested to do so */
        if(outdir != NULL){
                proc->file_stdout = g_strdup_printf("%s/%s-STDOUT", outdir, proc->jobname);
                soutfile[0] = g_io_channel_new_file(proc->file_stdout, "w", &err);

                if(soutfile[0] == NULL){
                        g_printerr("Failed to open %s for writing: %s. Skipping job\n", proc->file_stdout, err->message);
                        return;
                }
                
                proc->file_stderr = g_strdup_printf("%s/%s-STDERR", outdir, proc->jobname);
                soutfile[1] = g_io_channel_new_file(proc->file_stderr, "w", &err);

                if(soutfile[1] == NULL){
                        g_printerr("Failed to open %s for writing: %s. Skipping job\n", proc->file_stderr, err->message);
                        return;
                }       

        }


        /* Open stdin file to pass to the process */
        if(infile != NULL){
                sinfile = g_io_channel_new_file(infile, "r", NULL);
                pipe(inpipes);
        }

        /* Setup argv structure for job */
        if (verbose) g_fprintf(stderr, "Starting job '%s'\n", proc->jobname);
        execargv[0] = "/bin/sh";
        execargv[1] = "-c";
        execargv[2] = proc->exec;
        execargv[3] = NULL;

        /* Exec the job */
        if (infile == NULL){
                if( ! g_spawn_async_with_pipes(NULL, execargv, NULL, 0, NULL, NULL, &(proc->pid), NULL, &(outpipes[0]), &(outpipes[1]), &err)){
                        g_printerr("Failed to execute job %s: %s\n", proc->jobname, err->message);
                        return;
                }
        }else{
                if( ! g_spawn_async_with_pipes(NULL, execargv, NULL, 0, NULL, NULL, &(proc->pid), &(inpipes[1]), &(outpipes[0]), &(outpipes[1]), &err)){
                        g_printerr("Failed to execute job %s: %s\n", proc->jobname, err->message);
                        return;
                }
                close(inpipes[0]);
        }


        /* Make a stream out of the pipes for ease of reading from them */
        sout[0] = g_io_channel_unix_new(outpipes[0]);
        sout[1] = g_io_channel_unix_new(outpipes[1]);
        if(infile != NULL){
                sin = g_io_channel_unix_new(inpipes[1]);
                fds[2].fd = inpipes[1];
                fds[2].events = POLLOUT | POLLHUP;
                fdssize = 3;
        }


        /* Setup the poll events */
        fds[0].fd = outpipes[0];
        fds[1].fd = outpipes[1];
        fds[0].events = fds[1].events = POLLIN | POLLPRI | POLLHUP;
        fds[0].revents = fds[1].revents = fds[2].revents = 0;


        for(;;){
                gint x;
                gchar *readbuf;
                gint rdatasize, wdatasize;
                gboolean readdata = FALSE;
                fds[0].revents = fds[1].revents = fds[2].revents = 0;

                poll(fds, fdssize, -1);
                /* For stdout and stderr see if there is any data, and read it */
                for(x=0; x<2; x++){
                        if((fds[x].revents & POLLIN) == 0){
                                /* We have data to read */
                                g_io_channel_read_line(sout[x], &readbuf, &rdatasize, NULL, NULL);
                                if(rdatasize > 0){
                                        /* Print it if unless told not to */
                                        if(!quiet){
                                                g_printf("[%s] [%s] %s", proc->jobname, (x==0) ? "out" : "err", readbuf);
                                        }
                                        if(outdir != NULL){
                                                g_io_channel_write_chars(soutfile[x], readbuf, rdatasize, &wdatasize, NULL);
                                        }
                                        readdata = TRUE;
                                        free(readbuf);
                                }

                        }
                }
                /* See if we need to pump more data down stdin */
                if((fds[2].revents & POLLOUT) != 0){
                        /* We have data we can write */
                        gchar *nextline;
                        gint nextlinesize;
                        gint nextlinewritesize;
                        GIOStatus s;

                        /* Get the next line, and write it down the stream */
                        s = g_io_channel_read_line(sinfile, &nextline, &nextlinesize, NULL, NULL);
                        if (nextlinesize > 0){
                                g_io_channel_write_chars(sin, nextline, nextlinesize, &nextlinewritesize, NULL);
                        }
                        if (s == G_IO_STATUS_EOF){
                                g_io_channel_shutdown(sin, TRUE, NULL);
                                sin = NULL;
                                fdssize=2;
                        }

                }
                /* Even if we did get a hangup - lets make sure there is no more data to read first by looping again */
                if (readdata) continue;

                if(((fds[0].revents & POLLHUP) != 0) && ((fds[1].revents & POLLHUP) != 0)) break;
        }       

        g_timer_stop(proc->timer);

        g_io_channel_shutdown(sout[0], TRUE, NULL);
        g_io_channel_shutdown(sout[1], TRUE, NULL);

        if((infile != NULL) && (sin != NULL)){
                g_io_channel_shutdown(sin, TRUE, NULL);
        }
        if (outdir != NULL){
                g_io_channel_shutdown(soutfile[0], TRUE, NULL);
                g_io_channel_shutdown(soutfile[1], TRUE, NULL);
        }

        g_spawn_close_pid(proc->pid);

        if (verbose) g_fprintf(stderr, "Ending job '%s'\n", proc->jobname);

}

/* Takes a string str, a search string, find, and string to
 * replace all occurs of find with, replace. Returns a new
 * leaving original intact.
 */
gchar *strrep(gchar *str, gchar *find, gchar *replace){
        gchar *ptr, *oldptr;
        GString *newstr = g_string_new("");
        gssize len = strlen(str);
        gint findlen = strlen(find);

        ptr = g_strstr_len(str, len, find);
        oldptr=str;
        while(ptr != NULL){
                /* Copy in data up to this point */
                g_string_append_len (newstr, oldptr, (ptr - oldptr));
                /* Put in the replacement string */
                g_string_append(newstr, replace);

                oldptr = ptr + findlen;
                /* BUG - len will now be wrong. But, i only wanted a strstr anyway :) */
                ptr = g_strstr_len(oldptr, len, find);
        }

        /* Copy remains */
        g_string_append_len (newstr, oldptr, (ptr - oldptr));

        ptr = g_string_free(newstr, FALSE);

        return ptr;
}


/* Takes a cmd before substitution, takes the characters to be substituted
 * and a line for doign the substitution with. Fills in jobname
 */
gchar *genexeccmd(gchar *cmd, gchar *fmt, gchar *line, gchar **jobname){
        gchar *newexec, *ptr;
        int x;
        gchar *linesep = " ";
        gchar *fmtsep = " ";

        gchar **line_array;
        gchar **fmt_array;

        if ( fmt == NULL ){
                /* No format given - we'll just append the options to the end of the command */
                if(jobname != NULL) *jobname = g_strdup(line);
                return g_strdup_printf("%s %s", cmd, line);
        }

        line_array = g_strsplit(line, linesep, 0);
        fmt_array = g_strsplit(fmt, fmtsep, 0);

        if(jobparsename != NULL){
                if(jobname != NULL){
                        for(x=0; fmt_array[x] != NULL; x++){
                                if (line_array[x] == NULL) break;
                                if((strcmp(fmt_array[x], jobparsename) == 0)){
                                        *jobname = g_strdup(line_array[x]);
                                        break;
                                }
                        }
                }
        }else{
                /* Not told us what they want.. We'll just use the first one */
                *jobname = g_strdup(line_array[0]);
        }

        newexec = g_strdup(cmd);
        for(x=0; line_array[x] != NULL; x++){
                if (fmt_array[x] == NULL) break;
                ptr = newexec;
                newexec = strrep(newexec, fmt_array[x], line_array[x]);
                free(ptr);
        }


        return newexec;
}

int main(int argc, char **argv){

        GThreadPool *procpool;
        GError *pp_err = NULL, *err = NULL;
        gint x;

        GOptionContext *optcontext;

        optcontext = g_option_context_new(" - parallel job executer");
        g_option_context_add_main_entries(optcontext, options, NULL);
        g_option_context_parse (optcontext, &argc, &argv, &err);

        if(command == NULL){
                g_printerr("Command required, see --help for more flags\n");
                exit(1);
        }

        if(verbose){
                g_printerr("Command '%s'\n", command);
                g_printerr("Timeout '%d'\n", timeout);
                g_printerr("Jobs '%d'\n", numthreads);
        }
        
        
        if(argc < 2 && arglist == NULL){
                /* We have no arguments */
                g_printerr("Missing arguments, see --help for details\n");
                exit(1);
        }

        if (!g_thread_supported ()){ 
                g_thread_init (NULL);
        }else{
                g_printerr("Threading not supported\n");
        }
        
        if(verbose) g_printerr("Creating a threadpool %d in size\n", numthreads);
        procpool = g_thread_pool_new(process_child, NULL, numthreads, FALSE, &pp_err);

        /* Generate the commands and push the job onto the thread pool */
        /* If no substituion is needed */
        if (arglist != NULL){
                GIOChannel *f;
                gchar *line;
                GIOStatus status;

                f = g_io_channel_new_file(arglist, "r", &err);
                if (f == NULL){
                        g_printerr("Failed to open argfile: %s\n", err->message);
                        exit(1);
                }
                status = g_io_channel_read_line(f, &line, NULL, NULL, &err);
                while(status==G_IO_STATUS_NORMAL){
                        process_t *newproc = g_new(process_t, 1);
                        newproc->err = NULL;
                        
                        line = g_strstrip(line);
                
                        newproc->exec = genexeccmd(command, parseformat, line, &(newproc->jobname));
                        proclist = g_list_append(proclist, (gpointer) newproc);
                
                        if(verbose) g_printerr("Pushing command '%s' into thread pool queue\n", newproc->exec);
                        g_thread_pool_push(procpool, (gpointer) newproc, &(newproc->err));
                        
                        status = g_io_channel_read_line(f, &line, NULL, NULL, &err);
                }
                g_io_channel_close(f);
                
        }else{
                /* substition is needed */
                for(x=1; x<argc; x++){
                        process_t *newproc = g_new(process_t, 1);
                        newproc->err = NULL;

                        newproc->exec = genexeccmd(command, parseformat, argv[x],  &(newproc->jobname));

                        proclist = g_list_append(proclist, (gpointer) newproc);

                        if(verbose) g_printerr("Pushing command '%s' into thread pool queue\n", newproc->exec);
                        g_thread_pool_push(procpool, (gpointer) newproc, &(newproc->err));
                }
        }
                

        /* Wait for the jobs to finish */
        /* TODO - Kill jobs that don't finish in time */
        while(g_thread_pool_get_num_threads(procpool) > 0){
                g_usleep(1000);
        }

        return 0;
}
Revision:	1.3
Committed:	Tue Jan 24 20:15:25 2006 UTC (18 years, 10 months ago) by pajs
Content type:	text/plain
Branch:	MAIN
Changes since 1.2:	+8 -3 lines
Log Message:	More TODO's Started implementing timers - it does time it - it just does nothing with it :)
#	User	Rev	Content
1	pajs	1.1	/*
2			* Peter Saunders pjob.c
3			* Copyright (C) 2000-2005 Peter Saunders
4			*
5			* This program is free software; you can redistribute it and/or
6			* modify it under the terms of the GNU General Public License
7			* as published by the Free Software Foundation; either version 2
8			* of the License, or (at your option) any later version.
9			*
10			* This program is distributed in the hope that it will be useful,
11			* but WITHOUT ANY WARRANTY; without even the implied warranty of
12			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13			* GNU General Public License for more details.
14			*
15			* You should have received a copy of the GNU General Public License
16			* along with this program; if not, write to the Free Software
17			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18			*
19			*/
20
21			#include <stdio.h>
22	pajs	1.2	#include <stdlib.h>
23			#include <unistd.h>
24			#include <string.h>
25	pajs	1.1	#include <glib.h>
26	pajs	1.2	#include <glib/gprintf.h>
27	pajs	1.1	#include <poll.h>
28
29			#define DEFNUMTHREAD 10
30			#define DEFTIMEOUT 60
31
32			/* Structure for the process to be passed to the executing thread */
33			struct _process_t{
34			gchar *exec;
35			gchar *jobname;
36			GTimer *timer;
37			GPid pid;
38			gchar *file_stdout;
39			gchar *file_stderr;
40
41			GError *err;
42			};
43
44			typedef struct _process_t process_t;
45
46			/* Globals for config setup */
47			static gint numthreads = DEFNUMTHREAD;
48			static gboolean verbose = FALSE;
49			static gboolean quiet = FALSE;
50			static gint timeout = DEFTIMEOUT;
51			static gchar *parseformat = NULL;
52			static gchar *jobparsename = NULL;
53			static gchar *command = NULL;
54			static gchar *outdir = NULL;
55			static gchar *infile = NULL;
56			static gchar *arglist = NULL;
57
58			/* Command line options */
59			static GOptionEntry options[] =
60			{
61			{ "jobs", 'j', 0, G_OPTION_ARG_INT, &numthreads, "Number of jobs to run in parallel [DEFNUMTHREAD]", NULL },
62			{ "verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose, "Be verbose", NULL },
63			{ "quiet", 'q', 0, G_OPTION_ARG_NONE, &quiet, "Do not print the output of the commands as they are running", NULL },
64			{ "timeout", 't', 0, G_OPTION_ARG_INT, &timeout, "Timeout before process is killed [DEFTIMEOUT]", NULL },
65			{ "format", 'f', 0, G_OPTION_ARG_STRING, &parseformat, "The order of substitiution to be used in the command", NULL },
66			{ "jobname", 'n', 0, G_OPTION_ARG_STRING, &jobparsename, "If format is used, which variable to use for a output dir", NULL },
67			{ "command", 'c', 0, G_OPTION_ARG_STRING, &command, "The command to be executed", NULL },
68			{ "output", 'o', 0, G_OPTION_ARG_STRING, &outdir, "Directory to put all output into", NULL },
69			{ "stdin", 'i', 0, G_OPTION_ARG_FILENAME, &infile, "Pass contents of filename into stdin of the executing process", NULL },
70			{ "argsfile", 'a', 0, G_OPTION_ARG_FILENAME, &arglist, "File for list of argumenst if you dont want to use the command line", NULL },
71			{ NULL }
72			};
73
74			/* Linked list of process jobs */
75			GList *proclist = NULL;
76
77			/* Take a process_t and execute it, and doing the "right thing" with the output */
78			void process_child(gpointer data, gpointer user_data){
79			process_t proc = (process_t) data;
80			GIOChannel soutfile[2], sout[2], sinfile, sin;
81			gchar *execargv[4];
82			int outpipes[2], inpipes[2];
83			GError *err = NULL;
84
85			struct pollfd fds[3];
86			gint fdssize=2;
87
88	pajs	1.3	proc->timer = g_timer_new();
89			g_timer_start(proc->timer);
90
91	pajs	1.1	/* Setup files in output dir if requested to do so */
92			if(outdir != NULL){
93			proc->file_stdout = g_strdup_printf("%s/%s-STDOUT", outdir, proc->jobname);
94			soutfile[0] = g_io_channel_new_file(proc->file_stdout, "w", &err);
95
96			if(soutfile[0] == NULL){
97			g_printerr("Failed to open %s for writing: %s. Skipping job\n", proc->file_stdout, err->message);
98			return;
99			}
100
101			proc->file_stderr = g_strdup_printf("%s/%s-STDERR", outdir, proc->jobname);
102			soutfile[1] = g_io_channel_new_file(proc->file_stderr, "w", &err);
103
104			if(soutfile[1] == NULL){
105			g_printerr("Failed to open %s for writing: %s. Skipping job\n", proc->file_stderr, err->message);
106			return;
107			}
108
109			}
110
111
112			/* Open stdin file to pass to the process */
113			if(infile != NULL){
114			sinfile = g_io_channel_new_file(infile, "r", NULL);
115			pipe(inpipes);
116			}
117
118			/* Setup argv structure for job */
119			if (verbose) g_fprintf(stderr, "Starting job '%s'\n", proc->jobname);
120			execargv[0] = "/bin/sh";
121			execargv[1] = "-c";
122			execargv[2] = proc->exec;
123			execargv[3] = NULL;
124
125			/* Exec the job */
126			if (infile == NULL){
127			if( ! g_spawn_async_with_pipes(NULL, execargv, NULL, 0, NULL, NULL, &(proc->pid), NULL, &(outpipes[0]), &(outpipes[1]), &err)){
128			g_printerr("Failed to execute job %s: %s\n", proc->jobname, err->message);
129			return;
130			}
131			}else{
132			if( ! g_spawn_async_with_pipes(NULL, execargv, NULL, 0, NULL, NULL, &(proc->pid), &(inpipes[1]), &(outpipes[0]), &(outpipes[1]), &err)){
133			g_printerr("Failed to execute job %s: %s\n", proc->jobname, err->message);
134			return;
135			}
136			close(inpipes[0]);
137			}
138
139
140			/* Make a stream out of the pipes for ease of reading from them */
141			sout[0] = g_io_channel_unix_new(outpipes[0]);
142			sout[1] = g_io_channel_unix_new(outpipes[1]);
143			if(infile != NULL){
144			sin = g_io_channel_unix_new(inpipes[1]);
145			fds[2].fd = inpipes[1];
146			fds[2].events = POLLOUT \| POLLHUP;
147			fdssize = 3;
148			}
149
150
151			/* Setup the poll events */
152			fds[0].fd = outpipes[0];
153			fds[1].fd = outpipes[1];
154			fds[0].events = fds[1].events = POLLIN \| POLLPRI \| POLLHUP;
155			fds[0].revents = fds[1].revents = fds[2].revents = 0;
156
157
158			for(;;){
159			gint x;
160			gchar *readbuf;
161			gint rdatasize, wdatasize;
162			gboolean readdata = FALSE;
163			fds[0].revents = fds[1].revents = fds[2].revents = 0;
164
165			poll(fds, fdssize, -1);
166			/* For stdout and stderr see if there is any data, and read it */
167			for(x=0; x<2; x++){
168	pajs	1.3	if((fds[x].revents & POLLIN) == 0){
169	pajs	1.1	/* We have data to read */
170			g_io_channel_read_line(sout[x], &readbuf, &rdatasize, NULL, NULL);
171			if(rdatasize > 0){
172			/* Print it if unless told not to */
173			if(!quiet){
174			g_printf("[%s] [%s] %s", proc->jobname, (x==0) ? "out" : "err", readbuf);
175			}
176			if(outdir != NULL){
177			g_io_channel_write_chars(soutfile[x], readbuf, rdatasize, &wdatasize, NULL);
178			}
179			readdata = TRUE;
180			free(readbuf);
181			}
182
183			}
184			}
185			/* See if we need to pump more data down stdin */
186	pajs	1.3	if((fds[2].revents & POLLOUT) != 0){
187	pajs	1.1	/* We have data we can write */
188			gchar *nextline;
189			gint nextlinesize;
190			gint nextlinewritesize;
191			GIOStatus s;
192
193			/* Get the next line, and write it down the stream */
194			s = g_io_channel_read_line(sinfile, &nextline, &nextlinesize, NULL, NULL);
195			if (nextlinesize > 0){
196			g_io_channel_write_chars(sin, nextline, nextlinesize, &nextlinewritesize, NULL);
197			}
198			if (s == G_IO_STATUS_EOF){
199			g_io_channel_shutdown(sin, TRUE, NULL);
200	pajs	1.2	sin = NULL;
201	pajs	1.1	fdssize=2;
202			}
203
204			}
205			/* Even if we did get a hangup - lets make sure there is no more data to read first by looping again */
206			if (readdata) continue;
207
208	pajs	1.3	if(((fds[0].revents & POLLHUP) != 0) && ((fds[1].revents & POLLHUP) != 0)) break;
209	pajs	1.1	}
210	pajs	1.3
211			g_timer_stop(proc->timer);
212	pajs	1.1
213			g_io_channel_shutdown(sout[0], TRUE, NULL);
214			g_io_channel_shutdown(sout[1], TRUE, NULL);
215
216			if((infile != NULL) && (sin != NULL)){
217			g_io_channel_shutdown(sin, TRUE, NULL);
218			}
219			if (outdir != NULL){
220			g_io_channel_shutdown(soutfile[0], TRUE, NULL);
221			g_io_channel_shutdown(soutfile[1], TRUE, NULL);
222			}
223
224			g_spawn_close_pid(proc->pid);
225
226			if (verbose) g_fprintf(stderr, "Ending job '%s'\n", proc->jobname);
227
228			}
229
230			/* Takes a string str, a search string, find, and string to
231			* replace all occurs of find with, replace. Returns a new
232			* leaving original intact.
233			*/
234			gchar strrep(gchar str, gchar find, gchar replace){
235			gchar ptr, oldptr;
236			GString *newstr = g_string_new("");
237			gssize len = strlen(str);
238			gint findlen = strlen(find);
239
240			ptr = g_strstr_len(str, len, find);
241			oldptr=str;
242			while(ptr != NULL){
243			/* Copy in data up to this point */
244			g_string_append_len (newstr, oldptr, (ptr - oldptr));
245			/* Put in the replacement string */
246			g_string_append(newstr, replace);
247
248			oldptr = ptr + findlen;
249			/* BUG - len will now be wrong. But, i only wanted a strstr anyway :) */
250			ptr = g_strstr_len(oldptr, len, find);
251			}
252
253			/* Copy remains */
254			g_string_append_len (newstr, oldptr, (ptr - oldptr));
255
256			ptr = g_string_free(newstr, FALSE);
257
258			return ptr;
259			}
260
261
262			/* Takes a cmd before substitution, takes the characters to be substituted
263			* and a line for doign the substitution with. Fills in jobname
264			*/
265			gchar genexeccmd(gchar cmd, gchar fmt, gchar line, gchar **jobname){
266			gchar newexec, ptr;
267			int x;
268			gchar *linesep = " ";
269			gchar *fmtsep = " ";
270
271			gchar **line_array;
272			gchar **fmt_array;
273
274			if ( fmt == NULL ){
275			/* No format given - we'll just append the options to the end of the command */
276			if(jobname != NULL) *jobname = g_strdup(line);
277			return g_strdup_printf("%s %s", cmd, line);
278			}
279
280			line_array = g_strsplit(line, linesep, 0);
281			fmt_array = g_strsplit(fmt, fmtsep, 0);
282
283			if(jobparsename != NULL){
284			if(jobname != NULL){
285			for(x=0; fmt_array[x] != NULL; x++){
286			if (line_array[x] == NULL) break;
287			if((strcmp(fmt_array[x], jobparsename) == 0)){
288			*jobname = g_strdup(line_array[x]);
289			break;
290			}
291			}
292			}
293			}else{
294			/* Not told us what they want.. We'll just use the first one */
295			*jobname = g_strdup(line_array[0]);
296			}
297
298			newexec = g_strdup(cmd);
299			for(x=0; line_array[x] != NULL; x++){
300			if (fmt_array[x] == NULL) break;
301			ptr = newexec;
302			newexec = strrep(newexec, fmt_array[x], line_array[x]);
303			free(ptr);
304			}
305
306
307			return newexec;
308			}
309
310			int main(int argc, char **argv){
311
312			GThreadPool *procpool;
313			GError pp_err = NULL, err = NULL;
314			gint x;
315
316			GOptionContext *optcontext;
317
318			optcontext = g_option_context_new(" - parallel job executer");
319			g_option_context_add_main_entries(optcontext, options, NULL);
320			g_option_context_parse (optcontext, &argc, &argv, &err);
321
322			if(command == NULL){
323			g_printerr("Command required, see --help for more flags\n");
324			exit(1);
325			}
326
327			if(verbose){
328			g_printerr("Command '%s'\n", command);
329			g_printerr("Timeout '%d'\n", timeout);
330			g_printerr("Jobs '%d'\n", numthreads);
331			}
332
333
334			if(argc < 2 && arglist == NULL){
335			/* We have no arguments */
336			g_printerr("Missing arguments, see --help for details\n");
337			exit(1);
338			}
339
340			if (!g_thread_supported ()){
341			g_thread_init (NULL);
342			}else{
343			g_printerr("Threading not supported\n");
344			}
345
346			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	pajs	1.2	g_usleep(1000);
398	pajs	1.1	}
399
400			return 0;
401			}