1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#ifdef _WIN32
#include <windows.h>
// Depends on <windows.h> coming first
#include <sysinfoapi.h>
#else
#include <sys/types.h>
#include <unistd.h>
#if defined(__APPLE__) || defined(__FreeBSD__)
#include <sys/sysctl.h>
#elif defined(__linux__)
#include <sys/sysinfo.h>
#endif
#endif
#include "common/memory_detect.h"
namespace Common {
// Detects the RAM and Swapfile sizes
const MemoryInfo GetMemInfo() {
MemoryInfo mem_info{};
#ifdef _WIN32
MEMORYSTATUSEX memorystatus;
memorystatus.dwLength = sizeof(memorystatus);
GlobalMemoryStatusEx(&memorystatus);
mem_info.total_physical_memory = memorystatus.ullTotalPhys;
mem_info.total_swap_memory = memorystatus.ullTotalPageFile - mem_info.total_physical_memory;
#elif defined(__APPLE__)
u64 ramsize;
struct xsw_usage vmusage;
std::size_t sizeof_ramsize = sizeof(ramsize);
std::size_t sizeof_vmusage = sizeof(vmusage);
// hw and vm are defined in sysctl.h
// https://github.com/apple/darwin-xnu/blob/master/bsd/sys/sysctl.h#L471
// sysctlbyname(const char *, void *, size_t *, void *, size_t);
sysctlbyname("hw.memsize", &ramsize, &sizeof_ramsize, nullptr, 0);
sysctlbyname("vm.swapusage", &vmusage, &sizeof_vmusage, nullptr, 0);
mem_info.total_physical_memory = ramsize;
mem_info.total_swap_memory = vmusage.xsu_total;
#elif defined(__FreeBSD__)
u_long physmem, swap_total;
std::size_t sizeof_u_long = sizeof(u_long);
// sysctlbyname(const char *, void *, size_t *, const void *, size_t);
sysctlbyname("hw.physmem", &physmem, &sizeof_u_long, nullptr, 0);
sysctlbyname("vm.swap_total", &swap_total, &sizeof_u_long, nullptr, 0);
mem_info.total_physical_memory = physmem;
mem_info.total_swap_memory = swap_total;
#elif defined(__linux__)
struct sysinfo meminfo;
sysinfo(&meminfo);
mem_info.total_physical_memory = meminfo.totalram;
mem_info.total_swap_memory = meminfo.totalswap;
#else
mem_info.total_physical_memory = sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGE_SIZE);
mem_info.total_swap_memory = 0;
#endif
return mem_info;
}
u64 GetPageSize() {
#ifdef _WIN32
SYSTEM_INFO info;
::GetSystemInfo(&info);
return static_cast<u64>(info.dwPageSize);
#else
return static_cast<u64>(sysconf(_SC_PAGESIZE));
#endif
}
} // namespace Common
|
