int submit_tasks(struct work_queue *q, int input_size, int run_time, int output_size, int count )
{
static int ntasks=0;
char output_file[128];
char command[256];
char gen_input_cmd[256];
/*
Note that bs=1m and similar are not portable across various
implementations of dd, so we spell it out as bs=1048576
*/
sprintf(gen_input_cmd, "dd if=/dev/zero of=input.0 bs=1048576 count=%d",input_size);
system(gen_input_cmd);
int i;
for(i=0;i<count;i++) {
sprintf(output_file, "output.%d",ntasks++);
sprintf(command, "dd if=/dev/zero of=outfile bs=1048576 count=%d; sleep %d", output_size, run_time );
struct work_queue_task *t = work_queue_task_create(command);
work_queue_task_specify_file(t, "input.0", "infile", WORK_QUEUE_INPUT, WORK_QUEUE_CACHE);
work_queue_task_specify_file(t, output_file, "outfile", WORK_QUEUE_OUTPUT, WORK_QUEUE_NOCACHE);
work_queue_task_specify_cores(t,1);
work_queue_submit(q, t);
}
return 1;
}
static batch_job_id_t batch_job_wq_submit (struct batch_queue * q, const char *cmd, const char *extra_input_files, const char *extra_output_files, struct jx *envlist, const struct rmsummary *resources)
{
struct work_queue_task *t;
int caching_flag = WORK_QUEUE_CACHE;
if(string_istrue(hash_table_lookup(q->options, "caching"))) {
caching_flag = WORK_QUEUE_CACHE;
} else {
caching_flag = WORK_QUEUE_NOCACHE;
}
t = work_queue_task_create(cmd);
specify_files(t, extra_input_files, extra_output_files, caching_flag);
specify_envlist(t,envlist);
if(envlist) {
const char *category = jx_lookup_string(envlist, "CATEGORY");
if(category) {
work_queue_task_specify_category(t, category);
}
}
if(resources)
{
work_queue_task_specify_resources(t, resources);
}
work_queue_submit(q->data, t);
return t->taskid;
}
static batch_job_id_t batch_job_wq_submit (struct batch_queue * q, const char *cmd, const char *extra_input_files, const char *extra_output_files, struct nvpair *envlist )
{
struct work_queue_task *t;
int caching_flag = WORK_QUEUE_CACHE;
if(string_istrue(hash_table_lookup(q->options, "caching"))) {
caching_flag = WORK_QUEUE_CACHE;
} else {
caching_flag = WORK_QUEUE_NOCACHE;
}
t = work_queue_task_create(cmd);
specify_files(t, extra_input_files, extra_output_files, caching_flag);
specify_envlist(t,envlist);
struct rmsummary *resources = parse_batch_options_resources(hash_table_lookup(q->options, "batch-options"));
if(resources)
{
work_queue_task_specify_resources(t, resources);
free(resources);
}
work_queue_submit(q->data, t);
return t->taskid;
}
static int task_consider( int x, int y )
{
char command[WAVEFRONT_LINE_MAX];
char tag[WAVEFRONT_LINE_MAX];
struct work_queue_task* t;
if(x>=xsize) return 1;
if(y>=ysize) return 1;
if(text_array_get(array,x,y)) return 0;
const char *left = text_array_get(array,x-1,y);
const char *bottom = text_array_get(array,x,y-1);
const char *diag = text_array_get(array,x-1,y-1);
if(!left || !bottom || !diag) return 1;
sprintf(command,"./%s %d %d xfile yfile dfile",function,x,y);
sprintf(tag,"%d %d",x,y);
t = work_queue_task_create(command);
work_queue_task_specify_tag(t,tag);
work_queue_task_specify_input_file(t, function, function);
work_queue_task_specify_input_buf(t, left, strlen(left), "xfile");
work_queue_task_specify_input_buf(t, bottom, strlen(bottom), "yfile");
work_queue_task_specify_input_buf(t, diag, strlen(diag), "dfile");
work_queue_submit(queue,t);
return 1;
}
int submit_task(struct work_queue *q, const char *command, const char *executable, const char *infile, off_t infile_offset_start, off_t infile_offset_end, const char *outfile) {
struct work_queue_task *t;
int taskid;
char *infile_dup = strdup(infile); //basename() modifies its arguments. So we need to pass a duplicate.
char *executable_dup = strdup(executable);
char *outfile_dup = strdup(outfile);
t = work_queue_task_create(command);
if (!work_queue_task_specify_file_piece(t, infile, basename(infile_dup), infile_offset_start, infile_offset_end, WORK_QUEUE_INPUT, WORK_QUEUE_NOCACHE)) {
fprintf(stderr, "task_specify_file_piece() failed for %s: start offset %ld, end offset %ld.\n", infile, infile_offset_start, infile_offset_end);
return 0;
}
if (!work_queue_task_specify_file(t, executable, basename(executable_dup), WORK_QUEUE_INPUT, WORK_QUEUE_CACHE)) {
fprintf(stderr, "task_specify_file() failed for %s: check if arguments are null or remote name is an absolute path.\n", executable);
return 0;
}
if (!work_queue_task_specify_file(t, outfile, basename(outfile_dup), WORK_QUEUE_OUTPUT, WORK_QUEUE_NOCACHE)) {
fprintf(stderr, "task_specify_file() failed for %s: check if arguments are null or remote name is an absolute path.\n", outfile);
return 0;
}
taskid = work_queue_submit(q, t);
fprintf(stdout, "submitted task (id# %d): %s\n", taskid, t->command_line);
free(infile_dup);
free(executable_dup);
free(outfile_dup);
return taskid;
}
int submit_task_series(struct work_queue *q, struct task_series *ts, int series_id) {
char input_file[128], output_file[128], command[256];
char gen_input_cmd[256];
sprintf(input_file, "input-%d", series_id);
list_push_tail(created_files, xxstrdup(input_file));
sprintf(gen_input_cmd, "dd if=/dev/zero of=%s bs=1M count=%d", input_file, ts->input_size);
system(gen_input_cmd);
// submit tasks to the queue
int i;
for(i = 0; i < ts->num_of_tasks; i++) {
sprintf(output_file, "output-%d-%d", series_id, i);
list_push_tail(created_files, xxstrdup(output_file));
sprintf(command, "dd if=/dev/zero of=%s bs=1M count=%d; sleep %d", output_file, ts->output_size, ts->execution_time);
struct work_queue_task *t = work_queue_task_create(command);
if (!work_queue_task_specify_file(t, input_file, input_file, WORK_QUEUE_INPUT, WORK_QUEUE_CACHE)) {
printf("task_specify_file() failed for %s: check if arguments are null or remote name is an absolute path.\n", input_file);
return 0;
}
if (!work_queue_task_specify_file(t, output_file, output_file, WORK_QUEUE_OUTPUT, WORK_QUEUE_NOCACHE)) {
printf("task_specify_file() failed for %s: check if arguments are null or remote name is an absolute path.\n", output_file);
return 0;
}
int taskid = work_queue_submit(q, t);
printf("submitted task (id# %d): %s\n", taskid, t->command_line);
}
return 1; // success
}
static void task_submit(struct work_queue *q, int curr_rect_x, int curr_rect_y)
{
struct work_queue_task *t;
char rname_x[32];
char rname_y[32];
char cmd[255];
char fname_x[255];
char fname_y[255];
char tag[32];
sprintf(tag, "%03d-%03d", curr_rect_y, curr_rect_x);
sprintf(rname_x, "rect%03d.cfa", curr_rect_x);
if(curr_rect_x != curr_rect_y) {
sprintf(rname_y, "rect%03d.cfa", curr_rect_y);
} else {
sprintf(rname_y, "%s", "");
}
sprintf(cmd, "./%s %s %s %s", filter_program_name, filter_program_args, rname_x, rname_y);
// Create the task.
t = work_queue_task_create(cmd);
// Specify the tag for this task. Used for identifying which
// ones are done.
work_queue_task_specify_tag(t, tag);
// Send the executable, if it's not already there.
work_queue_task_specify_file(t, filter_program_path, filter_program_name, WORK_QUEUE_INPUT, WORK_QUEUE_CACHE);
// Send the repeat file if we need it and it's not already there.
if(repeat_filename)
work_queue_task_specify_file(t, repeat_filename, string_basename(repeat_filename), WORK_QUEUE_INPUT, WORK_QUEUE_CACHE);
// Add the rectangle. Add it as staged, so if the worker
// already has these sequences, there's no need to send them again.
sprintf(fname_x, "%s/%s", outdirname, rname_x);
work_queue_task_specify_file(t, fname_x, rname_x, WORK_QUEUE_INPUT, WORK_QUEUE_CACHE);
if(curr_rect_x != curr_rect_y) {
sprintf(fname_y, "%s/%s", outdirname, rname_y);
work_queue_task_specify_file(t, fname_y, rname_y, WORK_QUEUE_INPUT, WORK_QUEUE_CACHE);
}
work_queue_submit(q, t);
total_submitted++;
debug(D_DEBUG, "Submitted task for rectangle (%d, %d)\n", curr_rect_y, curr_rect_x);
}
static void task_complete(struct work_queue_task *t)
{
checkpoint_task(t);
if(t->result == 0) {
debug(D_DEBUG, "task complete: %s: %s", t->tag, t->command_line);
if(strlen(t->output) > 0) {
char *out = strdup(t->output);
char *cand1 = malloc(sizeof(char) * 500);
char *cand2 = malloc(sizeof(char) * 500);
int dir, start1, start2;
char *line = strtok(out, "\n");
int result = sscanf(line, "%s\t%s\t%d\t%d\t%d", cand1, cand2, &dir, &start1, &start2);
while(result == 5) {
cand_count++;
line = strtok(NULL, "\n");
if(line == NULL) {
break;
}
result = sscanf(line, "%s\t%s\t%d\t%d\t%d", cand1, cand2, &dir, &start1, &start2);
}
free(out);
free(cand1);
free(cand2);
}
fputs(t->output, outfile);
fflush(outfile);
total_processed++;
tasks_runtime += (t->time_receive_output_finish - t->time_send_input_start);
tasks_filetime += t->total_transfer_time;
work_queue_task_delete(t);
} else {
debug(D_DEBUG, "task failed: %s: %s", t->tag, t->command_line);
if(retry_max > total_retried) {
debug(D_DEBUG, "retrying task %d/%d", total_retried, retry_max);
total_retried++;
work_queue_submit(q, t);
} else {
fprintf(stderr, "%s: giving up after retrying %d tasks.\n", progname, retry_max);
exit(1);
}
}
}
int main(int argc, char *argv[])
{
struct work_queue *q;
struct work_queue_task *t;
int port = WORK_QUEUE_DEFAULT_PORT;
int taskid;
int i;
if(argc < 2) {
printf("work_queue_example <executable> <file1> [file2] [file3] ...\n");
printf("Each file given on the command line will be compressed using a remote worker.\n");
return 0;
}
debug_flags_set("all");
q = work_queue_create(port);
if(!q) {
printf("couldn't listen on port %d: %s\n", port, strerror(errno));
return 1;
}
printf("listening on port %d...\n", work_queue_port(q));
for(i = 1; i < argc; i++) {
char infile[256], outfile[256], command[256];
sprintf(infile, "%s", argv[i]);
sprintf(outfile, "%s.gz", argv[i]);
sprintf(command, "./gzip < %s > %s", infile, outfile);
t = work_queue_task_create(command);
if (!work_queue_task_specify_file(t, "/usr/bin/gzip", "gzip", WORK_QUEUE_INPUT, WORK_QUEUE_CACHE)) {
printf("task_specify_file() failed for /usr/bin/gzip: check if arguments are null or remote name is an absolute path.\n");
return 1;
}
if (!work_queue_task_specify_file(t, infile, infile, WORK_QUEUE_INPUT, WORK_QUEUE_NOCACHE)) {
printf("task_specify_file() failed for %s: check if arguments are null or remote name is an absolute path.\n", infile);
return 1;
}
if (!work_queue_task_specify_file(t, outfile, outfile, WORK_QUEUE_OUTPUT, WORK_QUEUE_NOCACHE)) {
printf("task_specify_file() failed for %s: check if arguments are null or remote name is an absolute path.\n", outfile);
return 1;
}
taskid = work_queue_submit(q, t);
printf("submitted task (id# %d): %s\n", taskid, t->command_line);
}
printf("waiting for tasks to complete...\n");
while(!work_queue_empty(q)) {
t = work_queue_wait(q, 5);
if(t) {
printf("task (id# %d) complete: %s (return code %d)\n", t->taskid, t->command_line, t->return_status);
work_queue_task_delete(t);
}
}
printf("all tasks complete!\n");
work_queue_delete(q);
return 0;
}
int main(int argc, char **argv)
{
signed char c;
struct work_queue *q;
int port = WORK_QUEUE_DEFAULT_PORT;
static const char *port_file = NULL;
int work_queue_master_mode = WORK_QUEUE_MASTER_MODE_STANDALONE;
char *project = NULL;
int priority = 0;
debug_config("allpairs_master");
extra_files_list = list_create();
struct option long_options[] = {
{"debug", required_argument, 0, 'd'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'v'},
{"port", required_argument, 0, 'p'},
{"random-port", required_argument, 0, 'Z'},
{"extra-args", required_argument, 0, 'e'},
{"width", required_argument, 0, 'x'},
{"height", required_argument, 0, 'y'},
{"advertise", no_argument, 0, 'a'}, //deprecated, left here for backwards compatibility
{"project-name", required_argument, 0, 'N'},
{"debug-file", required_argument, 0, 'o'},
{"output-file", required_argument, 0, 'O'},
{"wqstats-file", required_argument, 0, 's'},
{"input-file", required_argument, 0, 'f'},
{"estimated-time", required_argument, 0, 't'},
{"priority", required_argument, 0, 'P'},
{0,0,0,0}
};
while((c = getopt_long(argc, argv, "ad:e:f:hN:p:P:t:vx:y:Z:O:o:s:", long_options, NULL)) >= 0) {
switch (c) {
case 'a':
work_queue_master_mode = WORK_QUEUE_MASTER_MODE_CATALOG;
break;
case 'd':
debug_flags_set(optarg);
break;
case 'e':
extra_arguments = optarg;
break;
case 'f':
list_push_head(extra_files_list,optarg);
break;
case 'o':
debug_config_file(optarg);
break;
case 'O':
free(output_filename);
output_filename=xxstrdup(optarg);
break;
case 's':
free(wqstats_filename);
wqstats_filename=xxstrdup(optarg);
break;
case 'h':
show_help(progname);
exit(0);
break;
case 'N':
work_queue_master_mode = WORK_QUEUE_MASTER_MODE_CATALOG;
free(project);
project = xxstrdup(optarg);
break;
case 'p':
port = atoi(optarg);
break;
case 'P':
priority = atoi(optarg);
break;
case 't':
compare_program_time = atof(optarg);
break;
case 'v':
cctools_version_print(stdout, progname);
exit(0);
break;
case 'x':
xblock = atoi(optarg);
break;
case 'y':
yblock = atoi(optarg);
break;
case 'Z':
port_file = optarg;
port = 0;
break;
default:
show_help(progname);
return 1;
}
}
cctools_version_debug(D_DEBUG, argv[0]);
if((argc - optind) < 3) {
show_help(progname);
exit(1);
}
struct text_list *seta = text_list_load(argv[optind]);
if(!seta) {
fprintf(stderr,"%s: couldn't open %s: %s\n",progname,argv[optind+1],strerror(errno));
return 1;
}
fprintf(stdout, "%s: %s has %d elements\n",progname,argv[optind],text_list_size(seta));
struct text_list *setb = text_list_load(argv[optind+1]);
if(!setb) {
fprintf(stderr,"%s: couldn't open %s: %s\n",progname,argv[optind+1],strerror(errno));
return 1;
}
fprintf(stdout, "%s: %s has %d elements\n",progname,argv[optind+1],text_list_size(setb));
if (!find_executable("allpairs_multicore","PATH",allpairs_multicore_program,sizeof(allpairs_multicore_program))) {
fprintf(stderr,"%s: couldn't find allpairs_multicore in path\n",progname);
return 1;
}
debug(D_DEBUG,"using multicore executable %s",allpairs_multicore_program);
xstop = text_list_size(seta);
ystop = text_list_size(setb);
if(allpairs_compare_function_get(argv[optind+2])) {
strcpy(allpairs_compare_program,argv[optind+2]);
debug(D_DEBUG,"using internal function %s",allpairs_compare_program);
use_external_program = 0;
} else {
if(!find_executable(argv[optind+2],"PATH",allpairs_compare_program,sizeof(allpairs_compare_program))) {
fprintf(stderr,"%s: %s is neither an executable nor an internal comparison function.\n",progname,allpairs_compare_program);
return 1;
}
debug(D_DEBUG,"using comparison executable %s",allpairs_compare_program);
use_external_program = 1;
}
if(!xblock || !yblock) {
estimate_block_size(seta,setb,&xblock,&yblock);
}
fprintf(stdout, "%s: using block size of %dx%d\n",progname,xblock,yblock);
if(work_queue_master_mode == WORK_QUEUE_MASTER_MODE_CATALOG && !project) {
fprintf(stderr, "allpairs: allpairs master running in catalog mode. Please use '-N' option to specify the name of this project.\n");
fprintf(stderr, "allpairs: Run \"%s -h\" for help with options.\n", argv[0]);
return 1;
}
q = work_queue_create(port);
//Read the port the queue is actually running, in case we just called
//work_queue_create(LINK_PORT_ANY)
port = work_queue_port(q);
if(!q) {
fprintf(stderr,"%s: could not create work queue on port %d: %s\n",progname,port,strerror(errno));
return 1;
}
if(port_file)
opts_write_port_file(port_file, port);
if(wqstats_filename)
work_queue_specify_log(q, wqstats_filename);
// advanced work queue options
work_queue_specify_master_mode(q, work_queue_master_mode);
work_queue_specify_name(q, project);
work_queue_specify_priority(q, priority);
fprintf(stdout, "%s: listening for workers on port %d...\n",progname,work_queue_port(q));
while(1) {
struct work_queue_task *task = NULL;
while(work_queue_hungry(q)) {
task = ap_task_create(seta,setb);
if(task) {
work_queue_submit(q, task);
} else {
break;
}
}
if(!task && work_queue_empty(q)) break;
task = work_queue_wait(q,5);
if(task) task_complete(task);
}
work_queue_delete(q);
return 0;
}
int main(int argc, char *argv[])
{
struct work_queue *q;
struct work_queue_task *t;
int port = WORK_QUEUE_DEFAULT_PORT;
int taskid;
int i;
char *gzip_path;
if(argc < 2) {
printf("work_queue_example <file1> [file2] [file3] ...\n");
printf("Each file given on the command line will be compressed using a remote worker.\n");
return 0;
}
/*
Usually, we can execute the gzip utility by simply typing its name at a
terminal. However, this is not enough for work queue; we have to specify
precisely which files need to be transmitted to the workers. We record
the location of gzip in 'gzip_path', which is usually found in /bin/gzip
or /usr/bin/gzip. We use the 'access' function (from unistd.h standard C
library), and test the path for execution (X_OK) and reading (R_OK)
permissions.
*/
gzip_path = "/bin/gzip";
if(access(gzip_path, X_OK | R_OK) != 0) {
gzip_path = "/usr/bin/gzip";
if(access(gzip_path, X_OK | R_OK) != 0) {
fprintf(stderr, "gzip was not found. Please modify the gzip_path variable accordingly. To determine the location of gzip, from the terminal type: which gzip (usual locations are /bin/gzip and /usr/bin/gzip)\n");
exit(1);
}
}
/* We create the tasks queue using the default port. If this port is
* already been used by another program, you can try setting port = 0 to
* use an available port. */
q = work_queue_create(port);
if(!q) {
printf("couldn't listen on port %d: %s\n", port, strerror(errno));
return 1;
}
printf("listening on port %d...\n", work_queue_port(q));
/* We create and dispatch a task for each filename given in the argument list */
for(i = 1; i < argc; i++) {
char infile[256], outfile[256], command[256];
sprintf(infile, "%s", argv[i]);
sprintf(outfile, "%s.gz", argv[i]);
/* Note that we write ./gzip here, to guarantee that the gzip version
* we are using is the one being sent to the workers. */
sprintf(command, "./gzip < %s > %s", infile, outfile);
t = work_queue_task_create(command);
/* gzip is the same across all tasks, so we can cache it in the
* workers. Note that when specifying a file, we have to name its local
* name (e.g. gzip_path), and its remote name (e.g. "gzip"). Unlike the
* following line, more often than not these are the same. */
work_queue_task_specify_file(t, gzip_path, "gzip", WORK_QUEUE_INPUT, WORK_QUEUE_CACHE);
/* files to be compressed are different across all tasks, so we do not
* cache them. This is, of course, application specific. Sometimes you
* may want to cache an output file if is the input of a later task.*/
work_queue_task_specify_file(t, infile, infile, WORK_QUEUE_INPUT, WORK_QUEUE_NOCACHE);
work_queue_task_specify_file(t, outfile, outfile, WORK_QUEUE_OUTPUT, WORK_QUEUE_NOCACHE);
/* Once all files has been specified, we are ready to submit the task to the queue. */
taskid = work_queue_submit(q, t);
printf("submitted task (id# %d): %s\n", taskid, t->command_line);
}
printf("waiting for tasks to complete...\n");
while(!work_queue_empty(q)) {
/* Application specific code goes here ... */
/* work_queue_wait waits at most 5 seconds for some task to return. */
t = work_queue_wait(q, 5);
if(t) {
printf("task (id# %d) complete: %s (return code %d)\n", t->taskid, t->command_line, t->return_status);
if(t->return_status != 0)
{
/* The task failed. Error handling (e.g., resubmit with new parameters) here. */
}
work_queue_task_delete(t);
}
/* Application specific code goes here ... */
}
printf("all tasks complete!\n");
work_queue_delete(q);
return 0;
}
int main(int argc, char **argv)
{
char c;
struct work_queue *q;
int port = WORK_QUEUE_DEFAULT_PORT;
extra_files_list = list_create();
while((c = getopt(argc, argv, "e:f:t:x:y:p:N:E:d:vh")) != (char) -1) {
switch (c) {
case 'e':
extra_arguments = optarg;
break;
case 'f':
list_push_head(extra_files_list,optarg);
break;
case 't':
compare_program_time = atof(optarg);
break;
case 'x':
xblock = atoi(optarg);
break;
case 'y':
yblock = atoi(optarg);
break;
case 'p':
port = atoi(optarg);
break;
case 'N':
setenv("WORK_QUEUE_NAME", optarg, 1);
break;
case 'E':
setenv("WORK_QUEUE_PRIORITY", optarg, 1);
break;
case 'd':
debug_flags_set(optarg);
break;
case 'v':
show_version(progname);
exit(0);
break;
case 'h':
show_help(progname);
exit(0);
break;
default:
show_help(progname);
return 1;
}
}
if((argc - optind) < 3) {
show_help(progname);
exit(1);
}
struct text_list *seta = text_list_load(argv[optind]);
if(!seta) {
fprintf(stderr,"%s: couldn't open %s: %s\n",progname,argv[optind+1],strerror(errno));
return 1;
}
fprintf(stderr, "%s: %s has %d elements\n",progname,argv[optind],text_list_size(seta));
struct text_list *setb = text_list_load(argv[optind+1]);
if(!setb) {
fprintf(stderr,"%s: couldn't open %s: %s\n",progname,argv[optind+1],strerror(errno));
return 1;
}
fprintf(stderr, "%s: %s has %d elements\n",progname,argv[optind+1],text_list_size(setb));
if (!find_executable("allpairs_multicore","PATH",allpairs_multicore_program,sizeof(allpairs_multicore_program))) {
fprintf(stderr,"%s: couldn't find allpairs_multicore in path\n",progname);
return 1;
}
debug(D_DEBUG,"using multicore executable %s",allpairs_multicore_program);
xstop = text_list_size(seta);
ystop = text_list_size(setb);
if(allpairs_compare_function_get(argv[optind+2])) {
strcpy(allpairs_compare_program,argv[optind+2]);
debug(D_DEBUG,"using internal function %s",allpairs_compare_program);
use_external_program = 0;
} else {
if(!find_executable(argv[optind+2],"PATH",allpairs_compare_program,sizeof(allpairs_compare_program))) {
fprintf(stderr,"%s: %s is neither an executable nor an internal comparison function.\n",progname,allpairs_compare_program);
return 1;
}
debug(D_DEBUG,"using comparison executable %s",allpairs_compare_program);
use_external_program = 1;
}
if(!xblock || !yblock) {
estimate_block_size(seta,setb,&xblock,&yblock);
}
fprintf(stderr, "%s: using block size of %dx%d\n",progname,xblock,yblock);
q = work_queue_create(port);
if(!q) {
fprintf(stderr,"%s: could not create work queue on port %d: %s\n",progname,port,strerror(errno));
return 1;
}
fprintf(stderr, "%s: listening for workers on port %d...\n",progname,work_queue_port(q));
while(1) {
struct work_queue_task *task = NULL;
while(work_queue_hungry(q)) {
task = ap_task_create(seta,setb);
if(task) {
work_queue_submit(q, task);
} else {
break;
}
}
if(!task && work_queue_empty(q)) break;
task = work_queue_wait(q,5);
if(task) task_complete(task);
}
work_queue_delete(q);
return 0;
}