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// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2013 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
// another BOINC test application;
// converts one or more files to uppercase,
// then uses some CPU time
//
// cmdline: in1 out1 ... inn outn
//
#include <stdio.h>
#include "boinc_api.h"
#include "filesys.h"
#include "util.h"
double cpu_time = 20, comp_result;
// do about .5 seconds of computing
// (note: I needed to add an arg to this;
// otherwise the MS C++ compiler optimizes away
// all but the first call to it!)
//
static double do_some_computing(int foo) {
double x = 3.14159*foo;
int i;
for (i=0; i<50000000; i++) {
x += 5.12313123;
x *= 0.5398394834;
}
return x;
}
int convert_file(char* in, char* out) {
char input_path[1024], output_path[1024];
char buf[256];
boinc_resolve_filename(in, input_path, sizeof(input_path));
FILE* infile = boinc_fopen(input_path, "r");
if (!infile) {
fprintf(stderr,
"%s Couldn't find input file, resolved name %s.\n",
boinc_msg_prefix(buf, sizeof(buf)), input_path
);
return -1;
}
boinc_resolve_filename(out, output_path, sizeof(output_path));
FILE* outfile = boinc_fopen(output_path, "w");
if (!outfile) {
fprintf(stderr,
"%s Couldn't find output file, resolved name %s.\n",
boinc_msg_prefix(buf, sizeof(buf)), output_path
);
fclose(infile);
return -1;
}
while (1) {
char c = fgetc(infile);
if (c == EOF) break;
c = toupper(c);
fputc(c, outfile);
}
fclose(infile);
fclose(outfile);
return 0;
}
int main(int argc, char **argv) {
char buf[256];
int retval = boinc_init();
if (retval) {
fprintf(stderr, "%s boinc_init returned %d\n",
boinc_msg_prefix(buf, sizeof(buf)), retval
);
exit(retval);
}
for (int i=1; i<argc; i++) {
if (!strcmp(argv[i], "--cpu_time")) {
cpu_time = atof(argv[++i]);
} else {
retval = convert_file(argv[i], argv[i+1]);
if (retval) exit(-1);
i++;
}
}
// burn up some CPU time if needed
//
if (cpu_time) {
double start = dtime();
for (int i=0; ; i++) {
double e = dtime()-start;
if (e > cpu_time) break;
comp_result = do_some_computing(i);
}
}
boinc_finish(0);
}
#ifdef _WIN32
int WINAPI WinMain(
HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR Args, int WinMode
) {
LPSTR command_line;
char* argv[100];
int argc;
command_line = GetCommandLine();
argc = parse_command_line(command_line, argv);
return main(argc, argv);
}
#endif
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