mirror of https://github.com/BOINC/boinc.git
252 lines
7.6 KiB
C
252 lines
7.6 KiB
C
// The contents of this file are subject to the BOINC 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://boinc.berkeley.edu/license_1.0.txt
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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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// Code to facilitate writing validators.
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// Can be used as the basis for a validator that accepts everything
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// (see validate_trivial.C),
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// or that requires strict or fuzzy equality.
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#include <cassert>
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#include "error_numbers.h"
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#include "parse.h"
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#include "util.h"
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#include "filesys.h"
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#include "sched_util.h"
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#include "sched_config.h"
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#include "sched_msgs.h"
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#include "validate_util.h"
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using std::vector;
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using std::string;
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extern SCHED_CONFIG config;
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// get the name of a result's (first) output file
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//
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int get_output_file_path(RESULT const& result, string& path_str) {
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char buf[256], path[256];
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bool flag;
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flag = parse_str(result.xml_doc_out, "<name>", buf, sizeof(buf));
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if (!flag) return ERR_XML_PARSE;
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dir_hier_path(buf, config.upload_dir, config.uldl_dir_fanout, true, path);
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if (!boinc_file_exists(path)) {
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dir_hier_path(buf, config.upload_dir, config.uldl_dir_fanout, false, path);
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}
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path_str = path;
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return 0;
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}
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// If we have N correct results, compute a canonical credit as follows:
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// - if N==1, give that credit
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// - if N==2, give min credit
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// - if N>2, toss out min and max, give average of rest
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//
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double median_mean_credit(vector<RESULT> const& results) {
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typedef vector<RESULT>::const_iterator it;
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it it_low = results.end(), it_high;
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double credit_low = 0, credit_high = 0;
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size_t n_valid = 0;
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for (it i = results.begin(); i != results.end(); ++i) {
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if (i->validate_state != VALIDATE_STATE_VALID) continue;
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++n_valid;
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if (it_low == results.end()) {
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it_low = it_high = i;
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credit_low = credit_high = i->claimed_credit;
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} else {
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if (i->claimed_credit < credit_low) {
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it_low = i;
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credit_low = i->claimed_credit;
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}
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if (i->claimed_credit > credit_high) {
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it_high = i;
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credit_high = i->claimed_credit;
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}
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}
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}
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// compute a canonical credit as follows:
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// - if N==1, give that credit
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// - if N==2, give min credit
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// - if N>2, toss out min and max, give average of rest
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//
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if (n_valid == 1) {
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return credit_low;
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} else if (n_valid == 2) {
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return credit_low;
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} else {
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double sum = 0;
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for (it i = results.begin(); i != results.end(); ++i) {
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if (i == it_low) continue;
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if (i == it_high) continue;
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if (i->validate_state != VALIDATE_STATE_VALID) continue;
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sum += i->claimed_credit;
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}
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return sum/(n_valid-2);
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}
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}
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// Generic validation function that compares each result to each other one and
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// sees if there MIN_VALID results match. The comparison function is similar
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// to check_pair but takes an additional data parameter.
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//
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// This function takes 3 call-back functions, each of which accept a void*
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// and should return !=0 on error:
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//
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// 1. init_result - initialize all results - for example, call
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// read_file_string and compute an MD5. Return a void*
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// 2. check_pair_with_data - same as check_pair but with extra data from
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// init_result
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// 3. cleanup_result - deallocate anything created by init_result. Should
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// do nothing with NULL data
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//
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// see validate_test.C example usage.
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//
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int generic_check_set(
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vector<RESULT>& results, int& canonicalid, double& credit,
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init_result_f init_result_f,
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check_pair_with_data_f check_pair_with_data_f,
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cleanup_result_f cleanup_result_f,
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size_t min_valid)
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{
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assert (!results.empty());
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assert (min_valid >= 0);
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vector<void*> data;
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vector<RESULT>::size_type i, j, neq = 0, n = results.size();
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data.resize(n);
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// 1. INITIALIZE DATA
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for (i = 0; i != n; ++i) {
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if (init_result_f(results[i], data[i])) {
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log_messages.printf(
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SCHED_MSG_LOG::CRITICAL,
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"generic_check_set: init_result([RESULT#%d %s]) failed\n",
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results[i].id, results[i].name
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);
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goto cleanup;
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}
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}
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// 2. COMPARE
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for (i = 0; i != n; ++i) {
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vector<bool> matches;
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matches.resize(n);
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neq = 0;
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for (j = 0; j != n; ++j) {
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bool match = false;
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if (i == j) {
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++neq;
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matches[j] = true;
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} else if (check_pair_with_data_f(results[i], data[i], results[j], data[j], match)) {
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log_messages.printf(
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SCHED_MSG_LOG::CRITICAL,
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"generic_check_set: check_pair_with_data([RESULT#%d %s], [RESULT#%d %s]) failed\n",
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results[i].id, results[i].name, results[j].id, results[j].name
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);
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} else if (match) {
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++neq;
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matches[j] = true;
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}
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}
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if (neq >= min_valid) {
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// set validate state for each result
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for (j = 0; j != n; ++j) {
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results[j].validate_state = matches[j] ? VALIDATE_STATE_VALID : VALIDATE_STATE_INVALID;
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}
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canonicalid = results[i].id;
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credit = median_mean_credit(results);
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break;
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}
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}
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cleanup:
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// 3. CLEANUP
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for (i = 0; i != n; ++i) {
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cleanup_result_f(results[i], data[i]);
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}
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return 0;
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}
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// similar to generic_check_set, but require a strict majority of results
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// (N_results / 2) to be valid
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int generic_check_set_majority(
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vector<RESULT>& results, int& canonicalid, double& credit,
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init_result_f init_result_f,
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check_pair_with_data_f check_pair_with_data_f,
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cleanup_result_f cleanup_result_f)
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{
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return generic_check_set(
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results, canonicalid, credit,
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init_result_f, check_pair_with_data_f, cleanup_result_f,
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results.size() / 2
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);
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}
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int generic_check_pair(
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RESULT & r1, RESULT const& r2,
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init_result_f init_result_f,
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check_pair_with_data_f check_pair_with_data_f,
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cleanup_result_f cleanup_result_f
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) {
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void* data1;
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void* data2;
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int retval;
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bool match;
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retval = init_result_f(r1, data1);
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if (retval) {
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log_messages.printf(
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SCHED_MSG_LOG::CRITICAL,
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"[RESULT#%d %s] [RESULT#%d %s] Couldn't initialize result 1\n",
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r1.id, r1.name, r2.id, r2.name
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);
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return retval;
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}
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retval = init_result_f(r2, data2);
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if (retval) {
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log_messages.printf(
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SCHED_MSG_LOG::CRITICAL,
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"[RESULT#%d %s] [RESULT#%d %s] Couldn't initialize result 2\n",
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r1.id, r1.name, r2.id, r2.name
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);
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cleanup_result_f(r1, data1);
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return retval;
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}
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retval = check_pair_with_data_f(r1, data1, r2, data2, match);
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r1.validate_state = match?VALIDATE_STATE_VALID:VALIDATE_STATE_INVALID;
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cleanup_result_f(r1, data1);
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cleanup_result_f(r2, data2);
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return retval;
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}
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const char *BOINC_RCSID_07049e8a0e = "$Id$";
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