69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
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#ifndef HV_SYS_INFO_H_
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#define HV_SYS_INFO_H_
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#include "hplatform.h"
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#ifdef OS_LINUX
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#include <sys/sysinfo.h>
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#endif
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#ifdef OS_DARWIN
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#include <mach/mach_host.h>
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#include <sys/sysctl.h>
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#endif
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static inline int get_ncpu() {
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#ifdef OS_WIN
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SYSTEM_INFO si;
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GetSystemInfo(&si);
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return si.dwNumberOfProcessors;
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#else
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//return get_nprocs();
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//return get_nprocs_conf();
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//return sysconf(_SC_NPROCESSORS_ONLN); // processors available
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return sysconf(_SC_NPROCESSORS_CONF); // processors configured
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#endif
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}
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typedef struct meminfo_s {
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unsigned long total; // KB
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unsigned long free; // KB
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} meminfo_t;
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static inline int get_meminfo(meminfo_t* mem) {
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#ifdef OS_WIN
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MEMORYSTATUSEX memstat;
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memset(&memstat, 0, sizeof(memstat));
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memstat.dwLength = sizeof(memstat);
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GlobalMemoryStatusEx(&memstat);
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mem->total = (unsigned long)(memstat.ullTotalPhys >> 10);
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mem->free = (unsigned long)(memstat.ullAvailPhys >> 10);
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return 0;
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#elif defined(OS_LINUX)
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struct sysinfo info;
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if (sysinfo(&info) < 0) {
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return errno;
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}
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mem->total = info.totalram * info.mem_unit >> 10;
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mem->free = info.freeram * info.mem_unit >> 10;
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return 0;
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#elif defined(OS_DARWIN)
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uint64_t memsize = 0;
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size_t size = sizeof(memsize);
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int which[2] = {CTL_HW, HW_MEMSIZE};
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sysctl(which, 2, &memsize, &size, NULL, 0);
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mem->total = memsize >> 10;
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vm_statistics_data_t info;
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mach_msg_type_number_t count = sizeof(info) / sizeof(integer_t);
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host_statistics(mach_host_self(), HOST_VM_INFO, (host_info_t)&info, &count);
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mem->free = ((uint64_t)info.free_count * sysconf(_SC_PAGESIZE)) >> 10;
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return 0;
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#else
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(void)(mem);
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return -10;
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#endif
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}
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#endif // HV_SYS_INFO_H_
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