зеркало из https://github.com/mozilla/gecko-dev.git
72 строки
1.4 KiB
C++
72 строки
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* vim: sw=2 ts=8 et :
|
|
*/
|
|
/* 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 <stdio.h>
|
|
#include "Hal.h"
|
|
|
|
namespace mozilla {
|
|
namespace hal_impl {
|
|
|
|
uint32_t
|
|
GetTotalSystemMemory()
|
|
{
|
|
static uint32_t sTotalMemory;
|
|
static bool sTotalMemoryObtained = false;
|
|
|
|
if (!sTotalMemoryObtained) {
|
|
sTotalMemoryObtained = true;
|
|
|
|
FILE* fd = fopen("/proc/meminfo", "r");
|
|
if (!fd) {
|
|
return 0;
|
|
}
|
|
|
|
int rv = fscanf(fd, "MemTotal: %i kB", &sTotalMemory);
|
|
|
|
if (fclose(fd) || rv != 1) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return sTotalMemory * 1024;
|
|
}
|
|
|
|
uint32_t
|
|
GetTotalSystemMemoryLevel()
|
|
{
|
|
static uint32_t sTotalMemoryLevel = 1;
|
|
uint32_t sTotalMemory;
|
|
static bool sTotalMemoryObtained = false;
|
|
|
|
if (!sTotalMemoryObtained) {
|
|
sTotalMemoryObtained = true;
|
|
|
|
FILE* fd = fopen("/proc/meminfo", "r");
|
|
if (!fd) {
|
|
return 0;
|
|
}
|
|
|
|
int rv = fscanf(fd, "MemTotal: %i kB", &sTotalMemory);
|
|
|
|
if (fclose(fd) || rv != 1) {
|
|
return 0;
|
|
}
|
|
|
|
// From KB to MiB
|
|
sTotalMemory /= 1024;
|
|
|
|
while (sTotalMemoryLevel <= sTotalMemory) {
|
|
sTotalMemoryLevel *= 2;
|
|
}
|
|
}
|
|
|
|
return sTotalMemoryLevel;
|
|
}
|
|
|
|
} // namespace hal_impl
|
|
} // namespace mozilla
|