mirror of
https://github.com/tildearrow/furnace.git
synced 2024-12-04 10:17:26 +00:00
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2019
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
/* MP support header */
|
|
#include "MacportsLegacySupport.h"
|
|
|
|
/* sysconf wrap */
|
|
#if __MP_LEGACY_SUPPORT_SYSCONF_WRAP__
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <unistd.h>
|
|
#include <dlfcn.h>
|
|
#include <stdlib.h>
|
|
|
|
/* emulate several commonly used but missing selectors from sysconf() on various OS versions */
|
|
|
|
long sysconf(int name) {
|
|
long (*real_sysconf)(int);
|
|
|
|
#if __MP_LEGACY_SUPPORT_SYSCONF_WRAP_NEED_SC_NPROCESSORS_ONLN__
|
|
if ( name == _SC_NPROCESSORS_ONLN ) {
|
|
|
|
int nm[2];
|
|
int ret;
|
|
size_t len = 4;
|
|
uint32_t count;
|
|
|
|
nm[0] = CTL_HW; nm[1] = HW_AVAILCPU;
|
|
ret = sysctl(nm, 2, &count, &len, NULL, 0);
|
|
|
|
if (ret < 0 || count < 1) {
|
|
/* try again with _SC_NPROCESSORS_CONF */
|
|
return sysconf(_SC_NPROCESSORS_CONF);
|
|
} else {
|
|
return (long)count;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if __MP_LEGACY_SUPPORT_SYSCONF_WRAP_NEED_SC_NPROCESSORS_CONF__
|
|
if ( name == _SC_NPROCESSORS_CONF ) {
|
|
|
|
int nm[2];
|
|
int ret;
|
|
size_t len = 4;
|
|
uint32_t count;
|
|
|
|
nm[0] = CTL_HW; nm[1] = HW_NCPU;
|
|
ret = sysctl(nm, 2, &count, &len, NULL, 0);
|
|
|
|
/* there has to be at least 1 processor */
|
|
if (ret < 0 || count < 1) { count = 1; }
|
|
return (long)count;
|
|
}
|
|
#endif
|
|
|
|
#if __MP_LEGACY_SUPPORT_SYSCONF_WRAP_NEED_SC_PHYS_PAGES__
|
|
if ( name == _SC_PHYS_PAGES ) {
|
|
|
|
/* the number of pages is the total memory / pagesize */
|
|
uint64_t mem_size;
|
|
size_t len = sizeof(mem_size);
|
|
int pagesize = getpagesize();
|
|
|
|
sysctlbyname("hw.memsize", &mem_size, &len, NULL, 0);
|
|
|
|
return (long)(mem_size/pagesize);
|
|
|
|
}
|
|
#endif
|
|
|
|
/* for any other values of "name", call the real sysconf() */
|
|
real_sysconf = dlsym(RTLD_NEXT, "sysconf");
|
|
if (real_sysconf == NULL) {
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
return real_sysconf(name);
|
|
}
|
|
|
|
/* compatibility function so code does not have to be recompiled */
|
|
long macports_legacy_sysconf(int name) { return sysconf(name); }
|
|
|
|
#endif /*__MP_LEGACY_SUPPORT_SYSCONF_WRAP__*/
|