mirror of https://github.com/BOINC/boinc.git
80 lines
2.4 KiB
C
Executable File
80 lines
2.4 KiB
C
Executable File
// The contents of this file are subject to the Mozilla Public License
|
|
// Version 1.0 (the "License"); you may not use this file except in
|
|
// compliance with the License. You may obtain a copy of the License at
|
|
// http://www.mozilla.org/MPL/
|
|
//
|
|
// Software distributed under the License is distributed on an "AS IS"
|
|
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
|
|
// License for the specific language governing rights and limitations
|
|
// under the License.
|
|
//
|
|
// The Original Code is the Berkeley Open Infrastructure for Network Computing.
|
|
//
|
|
// The Initial Developer of the Original Code is the SETI@home project.
|
|
// Portions created by the SETI@home project are Copyright (C) 2002, 2003
|
|
// University of California at Berkeley. All Rights Reserved.
|
|
//
|
|
// Contributor(s):
|
|
//
|
|
|
|
#include <ctime>
|
|
#include <cstdlib>
|
|
#include <cmath>
|
|
|
|
#ifndef _UTIL_H_
|
|
#define _UTIL_H_
|
|
|
|
extern int double_to_ydhms (double x, int smallest_timescale, char *buf);
|
|
extern void get_byte_string(double nbytes, double total_bytes, char* str, int len);
|
|
extern double dtime();
|
|
extern void boinc_sleep(double);
|
|
extern int parse_command_line( char *, char ** );
|
|
extern int lock_file(char*);
|
|
extern void c2x(char *what);
|
|
extern void strip_whitespace(char *str);
|
|
extern void unescape_url(char *url);
|
|
extern void escape_url(char *in, char*out);
|
|
extern void escape_url_readable(char* in, char* out);
|
|
extern void case_format_url(char *url);
|
|
extern void safe_strncpy(char*, char*, int);
|
|
#define safe_strcpy(x, y) safe_strncpy(x, y, sizeof(x))
|
|
#define safe_strcat(x, y) if (strlen(x)+strlen(y)<sizeof(x)) strcat(x, y)
|
|
extern char* timestamp();
|
|
|
|
#ifndef max
|
|
#define max(a,b) (((a) > (b)) ? (a) : (b))
|
|
#endif
|
|
|
|
#ifndef min
|
|
#define min(a,b) (((a) < (b)) ? (a) : (b))
|
|
#endif
|
|
|
|
#define SECONDS_PER_DAY 86400
|
|
|
|
static inline double drand() {
|
|
return (double)rand()/(double)RAND_MAX;
|
|
}
|
|
|
|
// return a random integer in the range [rmin,rmax)
|
|
static inline double rand_range(double rmin, double rmax)
|
|
{
|
|
if (rmin < rmax)
|
|
return drand() * (rmax-rmin) + rmin;
|
|
else
|
|
return rmin;
|
|
}
|
|
|
|
// return a random integer in the range [MIN,min(e^n,MAX))
|
|
static inline int calculate_exponential_backoff(int n, double MIN, double MAX, double factor=1.0)
|
|
{
|
|
return (int) rand_range(MIN, min(MAX, factor*exp((double)n)));
|
|
}
|
|
|
|
// return a random integer in the range [MIN,e^n)
|
|
static inline int calculate_exponential_backoff(int n, double MIN)
|
|
{
|
|
return (int) rand_range(MIN, exp((double)n));
|
|
}
|
|
|
|
#endif
|