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size_t GC_pageSize (void) {
size_t len;
int mib[2];
len = 0;
mib[0] = CTL_HW;
mib[1] = HW_PAGESIZE;
if (-1 == sysctl (mib, 2, NULL, &len, NULL, 0))
diee ("sysctl failed");
if (len == sizeof(unsigned long long int)) {
unsigned long long int pageSize;
if (-1 == sysctl (mib, 2, &pageSize, &len, NULL, 0))
diee ("sysctl failed");
return (size_t)pageSize;
} else if (len == sizeof(unsigned long int)) {
unsigned long int pageSize;
if (-1 == sysctl (mib, 2, &pageSize, &len, NULL, 0))
diee ("sysctl failed");
return (size_t)pageSize;
} else if (len == sizeof(unsigned int)) {
unsigned int pageSize;
if (-1 == sysctl (mib, 2, &pageSize, &len, NULL, 0))
diee ("sysctl failed");
return (size_t)pageSize;
} else {
die ("GC_pageSize");
}
}
uintmax_t GC_physMem (void) {
size_t len;
int mib[2];
len = 0;
mib[0] = CTL_HW;
#if defined(HW_MEMSIZE)
/* Darwin */
mib[1] = HW_MEMSIZE;
#elif defined(HW_PHYSMEM64)
/* NetBSD */
mib[1] = HW_PHYSMEM64;
#else
mib[1] = HW_PHYSMEM;
#endif
if (-1 == sysctl (mib, 2, NULL, &len, NULL, 0))
diee ("sysctl failed");
if (len == sizeof(unsigned long long int)) {
unsigned long long int physMem;
if (-1 == sysctl (mib, 2, &physMem, &len, NULL, 0))
diee ("sysctl failed");
return (uintmax_t)physMem;
} else if (len == sizeof(unsigned long int)) {
unsigned long int physMem;
if (-1 == sysctl (mib, 2, &physMem, &len, NULL, 0))
diee ("sysctl failed");
return (uintmax_t)physMem;
} else if (len == sizeof(unsigned int)) {
unsigned int physMem;
if (-1 == sysctl (mib, 2, &physMem, &len, NULL, 0))
diee ("sysctl failed");
return (uintmax_t)physMem;
} else {
die ("GC_physMem");
}
}
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