mirror of https://github.com/BOINC/boinc.git
374 lines
10 KiB
C
374 lines
10 KiB
C
// The contents of this file are subject to the Mozilla Public License
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// Version 1.0 (the "License"); you may not use this file except in
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// compliance with the License. You may obtain a copy of the License at
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// http://www.mozilla.org/MPL/
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//
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// Software distributed under the License is distributed on an "AS IS"
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// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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// License for the specific language governing rights and limitations
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// under the License.
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//
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// The Original Code is the Berkeley Open Infrastructure for Network Computing.
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//
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// The Initial Developer of the Original Code is the SETI@home project.
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// Portions created by the SETI@home project are Copyright (C) 2002
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// University of California at Berkeley. All Rights Reserved.
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//
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// Contributor(s):
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//
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// timeout_check - do various time-based tasks
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// - time out results
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// - create new results to make up for lost ones
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// - check for WU error conditions
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//
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// timeout_check
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// -app appname
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// [ -nerror n ] if get this many errors, bail on WU
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// [ -ndet n ] if get this results w/o consensus, bail
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// [ -nredundancy n ] try to get at least this many done results
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// [ -asynch ] be asynchronous
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using namespace std;
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#include <vector>
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#include <unistd.h>
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#include <sys/time.h>
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#include "db.h"
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#include "util.h"
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#include "backend_lib.h"
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#include "config.h"
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#include "sched_util.h"
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#define LOCKFILE "timeout_check.out"
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int max_errors = 999;
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int max_done = 999;
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int nredundancy = 0;
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int startup_time;
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CONFIG config;
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R_RSA_PRIVATE_KEY key;
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char app_name[256];
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// The scheme for generating unique output filenames is as follows.
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// If the original filename is of the form x__y,
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// then y is replaced with a string of the form time_seqno,
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// where "time" is when this program started up.
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// NOTE: if you ever need to start up multiple copies of this,
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// you'll need to add a PID in there somewhere.
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//
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// If the original filename doesn't have __, add a string
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// of the form __time_seqno
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void make_unique_name(char* name) {
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char buf[256], *p;
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static int seqno;
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sprintf(buf, "%d_%d", startup_time, seqno++);
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p = strstr(name, "__");
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if (p) {
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strcpy(p+2, buf);
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} else {
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strcat(name, "__");
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strcat(name, buf);
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}
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}
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// convert a result's XML document to generate new output filenames.
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// The input has the form
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// <file_info>
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// <name>xxx</name>
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// ...
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// </file_info>
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// ...
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// <result>
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// <file_ref>
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// <file_name>xxx</file_name>
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// ...
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// </file_ref>
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// ...
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// </result>
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//
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// Look for <name>...</name> elements within <file_info>
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// and make a unique name based on it;
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// apply the same conversion to the <file_name> element later on.
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//
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// TODO: this is ad-hoc. Would be nice to use some generic
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// XML parsing routines, or XSLT or something.
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//
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int assign_new_names(char* in) {
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char *p = in, *n1, *n2, *r;
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char name[256], newname[256], element[256], buf[MAX_BLOB_SIZE];
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int len;
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// notice where the <result> is so we don't try to convert
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// the result name
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//
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r = strstr(in, "<result>");
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while (1) {
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n1 = strstr(p, "<name>");
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if (!n1) break;
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if (n1 > r) break; // don't go past <result>
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n1 += strlen("<name>");
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n2 = strstr(p, "</name>");
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if (!n2) {
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sprintf(buf, "assign_new_names(): malformed XML:\n%s", in);
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write_log(buf);
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return 1;
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}
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len = n2 - n1;
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memcpy(name, n1, len);
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name[len] = 0;
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strcpy(newname, name);
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make_unique_name(newname);
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strcpy(buf, n2);
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strcpy(n1, newname);
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strcat(n1, buf);
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// replace the name in the <file_name> element
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//
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sprintf(element, "<file_name>%s</file_name>", name);
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n2 = strstr(n1, element);
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if (!n2) {
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sprintf(buf, "assign_new_names(): no <file_name>:\n%s", in);
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write_log(buf);
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return 1;
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}
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strcpy(buf, n2+strlen(element));
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sprintf(element, "<file_name>%s</file_name>", newname);
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strcpy(n2, element);
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strcat(n2, buf);
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p = n1;
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}
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return 0;
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}
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void handle_wu(WORKUNIT& wu) {
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vector<RESULT> results;
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RESULT result;
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int nerrors, ndone, retval;
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unsigned int i, n;
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char buf[256];
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unsigned int now = time(0);
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bool wu_error = false, all_over;
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// scan the results for the WU
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//
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result.workunitid = wu.id;
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while (!db_result_enum_wuid(result)) {
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results.push_back(result);
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}
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nerrors = 0;
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ndone = 0;
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for (i=0; i<results.size(); i++) {
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result = results[i];
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switch (result.server_state) {
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case RESULT_SERVER_STATE_IN_PROGRESS:
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if (result.report_deadline < now) {
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// clean up any incomplete uploads
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result.file_delete_state = FILE_DELETE_READY;
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result.server_state = RESULT_SERVER_STATE_OVER;
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result.outcome = RESULT_OUTCOME_NO_REPLY;
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db_result_update(result);
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}
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break;
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case RESULT_SERVER_STATE_OVER:
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switch (result.outcome) {
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case RESULT_OUTCOME_COULDNT_SEND:
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sprintf(buf, "WU %s has couldn't-send result\n", wu.name);
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write_log(buf);
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wu.error_mask |= WU_ERROR_COULDNT_SEND_RESULT;
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wu_error = true;
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break;
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case RESULT_OUTCOME_SUCCESS:
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ndone++;
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break;
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default:
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nerrors++;
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break;
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}
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break;
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}
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}
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// check for too many errors or too many results
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//
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if (nerrors > max_errors) {
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sprintf(buf, "WU %s has too many errors\n", wu.name);
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write_log(buf);
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wu.error_mask |= WU_ERROR_TOO_MANY_ERROR_RESULTS;
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wu_error = true;
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}
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if (ndone > max_done) {
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sprintf(buf, "WU %s has too many answers\n", wu.name);
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write_log(buf);
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wu.error_mask |= WU_ERROR_TOO_MANY_RESULTS;
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wu_error = true;
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}
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// if this WU had an error, don't send any unsent results
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//
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if (wu_error) {
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for (i=0; i<results.size(); i++) {
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result = results[i];
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if (result.server_state == RESULT_SERVER_STATE_UNSENT) {
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result.server_state = RESULT_SERVER_STATE_OVER;
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result.outcome = RESULT_OUTCOME_DIDNT_NEED;
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db_result_update(result);
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}
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}
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if (wu.assimilate_state == ASSIMILATE_INIT) {
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wu.assimilate_state = ASSIMILATE_READY;
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}
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} else {
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// If no error, generate new results if needed.
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// Munge the XML of an existing result
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// to create unique new output filenames.
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//
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if (nredundancy > ndone) {
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n = nredundancy - ndone;
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for (i=0; i<n; i++) {
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result = results[0];
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make_unique_name(result.name);
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initialize_result(result, wu);
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remove_signatures(result.xml_doc_in);
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assign_new_names(result.xml_doc_in);
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add_signatures(result.xml_doc_in, key);
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retval = db_result_new(result);
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if (retval) {
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sprintf(buf, "db_result_new %d\n", retval);
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write_log(buf);
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break;
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}
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}
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}
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}
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// see if all results are OVER and result is assimilated;
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// if so we don't need to check this WU ever again.
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//
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all_over = true;
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for (i=0; i<results.size(); i++) {
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result = results[i];
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if (result.server_state != RESULT_SERVER_STATE_OVER) {
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all_over = false;
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break;
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}
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}
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if (all_over && wu.assimilate_state == ASSIMILATE_DONE) {
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wu.file_delete_state = FILE_DELETE_READY;
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wu.timeout_check_time = 0;
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} else {
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wu.timeout_check_time = now + wu.delay_bound;
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}
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retval = db_workunit_update(wu);
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if (retval) {
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sprintf(buf, "db_workunit_update %d\n", retval);
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write_log(buf);
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}
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}
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bool do_pass(APP& app) {
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WORKUNIT wu;
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bool did_something = false;
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// loop over WUs that are due to be checked
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//
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wu.timeout_check_time = time(0);
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wu.appid = app.id;
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while (!db_workunit_enum_timeout_check_time(wu)) {
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did_something = true;
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handle_wu(wu);
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}
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return did_something;
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}
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void main_loop(bool one_pass) {
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APP app;
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bool did_something;
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int retval;
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char buf[256];
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retval = boinc_db_open(config.db_name, config.db_passwd);
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if (retval) {
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sprintf(buf, "boinc_db_open: %d\n", retval);
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write_log(buf);
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exit(1);
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}
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strcpy(app.name, app_name);
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retval = db_app_lookup_name(app);
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if (retval) {
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sprintf(buf, "can't find app %s\n", app.name);
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write_log(buf);
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exit(1);
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}
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while (1) {
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did_something = do_pass(app);
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if (one_pass) break;
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if (!did_something) sleep(1);
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check_stop_trigger();
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}
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}
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int main(int argc, char** argv) {
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int i, retval;
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bool asynch = false, one_pass=false;
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char path[256];
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check_stop_trigger();
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startup_time = time(0);
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for (i=1; i<argc; i++) {
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if (!strcmp(argv[i], "-app")) {
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strcpy(app_name, argv[++i]);
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} else if (!strcmp(argv[i], "-nerror")) {
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max_errors = atoi(argv[++i]);
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} else if (!strcmp(argv[i], "-ndet")) {
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max_done = atoi(argv[++i]);
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} else if (!strcmp(argv[i], "-asynch")) {
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asynch = true;
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} else if (!strcmp(argv[i], "-one_pass")) {
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one_pass = true;
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} else if (!strcmp(argv[i], "-nredundancy")) {
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nredundancy = atoi(argv[++i]);;
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}
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}
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retval = config.parse_file();
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if (retval) {
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fprintf(stderr, "can't read config file\n");
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exit(1);
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}
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sprintf(path, "%s/upload_private", config.key_dir);
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retval = read_key_file(path, key);
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if (retval) {
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fprintf(stderr, "can't read key\n");
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exit(1);
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}
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if (asynch) {
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if (fork()) {
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exit(0);
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}
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}
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// Call lock_file after fork(), because file locks are not always inherited
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if (lock_file(LOCKFILE)) {
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fprintf(stderr, "Another copy of timeout_check is already running\n");
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exit(1);
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}
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main_loop(one_pass);
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}
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