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asset.c
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asset.c
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/*********************************************************************************
* MIT License *
* *
* Copyright (c) 2021 Chenxi Zhou <[email protected]> *
* *
* Permission is hereby granted, free of charge, to any person obtaining a copy *
* of this software and associated documentation files (the "Software"), to deal *
* in the Software without restriction, including without limitation the rights *
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included in *
* all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, *
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE *
* SOFTWARE. *
*********************************************************************************/
/********************************** Revision History *****************************
* *
* 02/09/21 - Chenxi Zhou: Created *
* *
*********************************************************************************/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include <ctype.h>
#include <unistd.h>
#include <sys/resource.h>
#include <sys/time.h>
#include "asset.h"
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
double cputime(void)
{
struct rusage r;
getrusage(RUSAGE_SELF, &r);
return r.ru_utime.tv_sec + r.ru_stime.tv_sec + 1e-6 * (r.ru_utime.tv_usec + r.ru_stime.tv_usec);
}
#ifdef __linux__
void liftrlimit()
{
struct rlimit r;
getrlimit(RLIMIT_AS, &r);
r.rlim_cur = r.rlim_max;
setrlimit(RLIMIT_AS, &r);
}
#else
void liftrlimit() {}
#endif
long peakrss(void)
{
struct rusage r;
getrusage(RUSAGE_SELF, &r);
#ifdef __linux__
return r.ru_maxrss * 1024;
#else
return r.ru_maxrss;
#endif
}
double realtime(void)
{
struct timeval tp;
gettimeofday(&tp, NULL);
return tp.tv_sec + tp.tv_usec * 1e-6;
}
#if defined CTL_HW && defined HW_USERMEM
#include <sys/sysctl.h>
#endif
long physmem_total(void)
{
#if defined _SC_PHYS_PAGES && defined _SC_PAGESIZE
{
/* This works on linux-gnu, solaris2 and cygwin */
long pages = sysconf(_SC_PHYS_PAGES);
long pagesize = sysconf(_SC_PAGESIZE);
if (0 <= pages && 0 <= pagesize)
return pages * pagesize;
}
#elif defined CTL_HW && defined HW_PHYSMEM
{
/* This works on *bsd and darwin */
unsigned int physmem;
size_t len = sizeof physmem;
static int mib[2] = { CTL_HW, HW_PHYSMEM };
if (sysctl (mib, ARRAY_SIZE(mib), &physmem, &len, NULL, 0) == 0
&& len == sizeof (physmem))
return physmem;
}
#endif
return 0;
}
long physmem_avail(void)
{
#if defined _SC_AVPHYS_PAGES && defined _SC_PAGESIZE
{
/* This works on linux-gnu, solaris2 and cygwin */
long pages = sysconf(_SC_AVPHYS_PAGES);
long pagesize = sysconf(_SC_PAGESIZE);
if (0 <= pages && 0 <= pagesize)
return pages * pagesize;
}
#elif defined CTL_HW && defined HW_USERMEM
{
/* This works on *bsd and darwin */
unsigned int usermem;
size_t len = sizeof usermem;
static int mib[2] = { CTL_HW, HW_USERMEM };
if (sysctl (mib, ARRAY_SIZE(mib), &usermem, &len, NULL, 0) == 0
&& len == sizeof (usermem))
return usermem;
}
#endif
return 0;
}
void ram_limit(long *total, long *avail)
{
long t, a, a1;
struct rlimit lim;
getrlimit(RLIMIT_RSS, &lim);
a = lim.rlim_cur;
getrlimit(RLIMIT_AS, &lim);
a = MAX(a, (long) lim.rlim_cur);
// a1 = (long) (sysconf(_SC_AVPHYS_PAGES) * sysconf(_SC_PAGESIZE));
a1 = physmem_avail();
a = a > 0? MIN(a, a1) : a1;
// t = sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE);
t = physmem_total();
*avail = a;
*total = t;
}
int file_copy(char *fin, char *fout)
{
FILE *fptr1, *fptr2;
int c;
fptr1 = fopen(fin, "r");
fptr2 = fopen(fout, "w");
c = fgetc(fptr1);
while (c != EOF) {
fputc(c, fptr2);
c = fgetc(fptr1);
}
fclose(fptr1);
fclose(fptr2);
return 0;
}
int8_t is_read_pair(const char *rname0, const char *rname1)
{
int n = strlen(rname0);
if (n == 0 || n != strlen(rname1))
return 0;
if (!strcmp(rname0, rname1) ||
(n > 2 &&
!strncmp(rname0, rname1, n - 1) &&
rname0[n - 2] == '/' &&
rname1[n - 2] == '/' &&
rname0[n - 1] != rname1[n - 1]))
return 1;
return 0;
}
inline uint32_t div_ceil(uint64_t x, uint32_t y)
{
uint64_t b = (MAX(x, 1) - 1) / y;
assert(b < UINT32_MAX);
return 1 + b;
}
uint64_t linear_scale(uint64_t g, int *scale, uint64_t max_g)
{
int s;
s = 0;
while (g > max_g) {
++s;
g >>= 1;
}
*scale = s;
return g;
}
void write_bin_header(FILE *fo)
{
int64_t magic_number = BIN_H;
int64_t bin_version = BIN_V;
magic_number |= bin_version;
fwrite(&magic_number, sizeof(int64_t), 1, fo);
}
int is_valid_bin_header(int64_t n)
{
int64_t magic_number = BIN_H;
int64_t bin_version = BIN_V;
magic_number |= bin_version;
return n == magic_number;
}
int strcmp_case_insensitive(const char *s1, const char *s2)
{
const unsigned char *p1 = (const unsigned char *) s1;
const unsigned char *p2 = (const unsigned char *) s2;
int result;
if (p1 == p2)
return 0;
while ((result = tolower (*p1) - tolower(*p2++)) == 0)
if (*p1++ == '\0')
break;
return result;
}
void positive_or_die(int num)
{
if (num <= 0 ) {
fprintf(stderr, "[E::%s] nonpositive numeric error: %d\n", __func__, num);
exit(EXIT_FAILURE);
}
}