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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "MLUtils.h"
#include <algorithm>
#include <cmath>
#include "prsystem.h"
#include "mozilla/Casting.h"
#include <sys/types.h>
#include "nsSystemInfo.h"
#if defined(XP_WIN)
# include <sysinfoapi.h>
#endif
#if defined(XP_MACOSX)
# include <sys/sysctl.h>
# include <mach/mach.h>
#endif
#if defined(XP_LINUX)
# include <sys/sysinfo.h>
#endif
namespace mozilla::ml {
NS_IMPL_ISUPPORTS(MLUtils, nsIMLUtils)
NS_IMETHODIMP MLUtils::GetTotalPhysicalMemory(uint64_t* _retval) {
*_retval = PR_GetPhysicalMemorySize();
return NS_OK;
}
NS_IMETHODIMP MLUtils::GetAvailablePhysicalMemory(uint64_t* _retval) {
#if defined(XP_WIN)
MEMORYSTATUSEX memStatus = {sizeof(memStatus)};
if (GlobalMemoryStatusEx(&memStatus)) {
*_retval = memStatus.ullAvailPhys;
} else {
return NS_ERROR_FAILURE;
}
#endif
#if defined(XP_MACOSX)
mach_port_t host_port = mach_host_self();
vm_size_t page_size;
vm_statistics64_data_t vm_stats;
mach_msg_type_number_t count = HOST_VM_INFO64_COUNT;
if (host_page_size(host_port, &page_size) != KERN_SUCCESS ||
host_statistics64(host_port, HOST_VM_INFO64,
reinterpret_cast<host_info64_t>(&vm_stats),
&count) != KERN_SUCCESS) {
return NS_ERROR_FAILURE;
}
*_retval =
static_cast<uint64_t>(vm_stats.free_count + vm_stats.inactive_count) *
page_size;
#endif
#if defined(XP_LINUX)
struct sysinfo memInfo{0};
if (sysinfo(&memInfo) != 0) {
return NS_ERROR_FAILURE;
}
*_retval = memInfo.freeram * memInfo.mem_unit;
#endif
return NS_OK;
}
NS_IMETHODIMP MLUtils::GetOptimalCPUConcurrency(uint8_t* _retval) {
ProcessInfo processInfo = {};
if (!NS_SUCCEEDED(CollectProcessInfo(processInfo))) {
return NS_ERROR_FAILURE;
}
#if defined(ANDROID)
// On android, "big" and "medium" cpus can be used.
uint8_t cpuCount = processInfo.cpuPCount + processInfo.cpuMCount;
#else
# ifdef __aarch64__
// On aarch64 (like macBooks) we want to avoid efficient cores and stick with
// "big" cpus.
uint8_t cpuCount = processInfo.cpuPCount;
# else
// on x86_64 we're always using the number of physical cores.
uint8_t cpuCount = processInfo.cpuCores;
# endif
#endif
*_retval = cpuCount;
return NS_OK;
}
} // namespace mozilla::ml
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