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