mirror of https://github.com/BOINC/boinc.git
130 lines
3.3 KiB
C++
130 lines
3.3 KiB
C++
// This file is part of BOINC.
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// http://boinc.berkeley.edu
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// Copyright (C) 2013 University of California
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//
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// BOINC is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License
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// as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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//
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// BOINC is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
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// another BOINC test application;
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// converts one or more files to uppercase,
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// then uses some CPU time
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//
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// cmdline: in1 out1 ... inn outn
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//
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#include <stdio.h>
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#include "boinc_api.h"
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#include "filesys.h"
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#include "util.h"
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double cpu_time = 20, comp_result;
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// do about .5 seconds of computing
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// (note: I needed to add an arg to this;
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// otherwise the MS C++ compiler optimizes away
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// all but the first call to it!)
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//
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static double do_some_computing(int foo) {
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double x = 3.14159*foo;
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int i;
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for (i=0; i<50000000; i++) {
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x += 5.12313123;
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x *= 0.5398394834;
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}
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return x;
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}
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int convert_file(char* in, char* out) {
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char input_path[1024], output_path[1024];
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char buf[256];
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boinc_resolve_filename(in, input_path, sizeof(input_path));
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FILE* infile = boinc_fopen(input_path, "r");
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if (!infile) {
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fprintf(stderr,
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"%s Couldn't find input file, resolved name %s.\n",
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boinc_msg_prefix(buf, sizeof(buf)), input_path
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);
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return -1;
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}
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boinc_resolve_filename(out, output_path, sizeof(output_path));
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FILE* outfile = boinc_fopen(output_path, "w");
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if (!outfile) {
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fprintf(stderr,
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"%s Couldn't find output file, resolved name %s.\n",
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boinc_msg_prefix(buf, sizeof(buf)), output_path
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);
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return -1;
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}
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while (1) {
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char c = fgetc(infile);
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if (c == EOF) break;
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c = toupper(c);
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fputc(c, outfile);
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}
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fclose(infile);
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fclose(outfile);
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return 0;
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}
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int main(int argc, char **argv) {
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char buf[256];
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int retval = boinc_init();
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if (retval) {
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fprintf(stderr, "%s boinc_init returned %d\n",
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boinc_msg_prefix(buf, sizeof(buf)), retval
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);
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exit(retval);
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}
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for (int i=1; i<argc; i++) {
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if (!strcmp(argv[i], "--cpu_time")) {
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cpu_time = atof(argv[++i]);
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} else {
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retval = convert_file(argv[i], argv[i+1]);
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if (retval) exit(-1);
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i++;
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}
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}
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// burn up some CPU time if needed
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//
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if (cpu_time) {
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double start = dtime();
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for (int i=0; ; i++) {
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double e = dtime()-start;
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if (e > cpu_time) break;
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comp_result = do_some_computing(i);
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}
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}
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boinc_finish(0);
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}
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#ifdef _WIN32
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int WINAPI WinMain(
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HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR Args, int WinMode
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) {
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LPSTR command_line;
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char* argv[100];
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int argc;
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command_line = GetCommandLine();
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argc = parse_command_line(command_line, argv);
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return main(argc, argv);
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}
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#endif
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