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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/sys_info.h"
#include <ApplicationServices/ApplicationServices.h>
#include <CoreServices/CoreServices.h>
#include <mach/mach_host.h>
#include <mach/mach_init.h>
#include "base/logging.h"
namespace base {
// static
void SysInfo::OperatingSystemVersionNumbers(int32 *major_version,
int32 *minor_version,
int32 *bugfix_version) {
Gestalt(gestaltSystemVersionMajor,
reinterpret_cast<SInt32*>(major_version));
Gestalt(gestaltSystemVersionMinor,
reinterpret_cast<SInt32*>(minor_version));
Gestalt(gestaltSystemVersionBugFix,
reinterpret_cast<SInt32*>(bugfix_version));
}
// static
int64 SysInfo::AmountOfPhysicalMemory() {
struct host_basic_info hostinfo;
mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
int result = host_info(mach_host_self(),
HOST_BASIC_INFO,
reinterpret_cast<host_info_t>(&hostinfo),
&count);
DCHECK_EQ(HOST_BASIC_INFO_COUNT, count);
if (result != KERN_SUCCESS) {
NOTREACHED();
return 0;
}
return static_cast<int64>(hostinfo.max_mem);
}
// static
void SysInfo::GetPrimaryDisplayDimensions(int* width, int* height) {
CGDirectDisplayID main_display = CGMainDisplayID();
if (width)
*width = CGDisplayPixelsWide(main_display);
if (height)
*height = CGDisplayPixelsHigh(main_display);
}
// static
int SysInfo::DisplayCount() {
// Don't just return the number of online displays. It includes displays
// that mirror other displays, which are not desired in the count. It's
// tempting to use the count returned by CGGetActiveDisplayList, but active
// displays exclude sleeping displays, and those are desired in the count.
// It would be ridiculous to have this many displays connected, but
// CGDirectDisplayID is just an integer, so supporting up to this many
// doesn't hurt.
CGDirectDisplayID online_displays[128];
CGDisplayCount online_display_count = 0;
if (CGGetOnlineDisplayList(arraysize(online_displays),
online_displays,
&online_display_count) != kCGErrorSuccess) {
// 1 is a reasonable assumption.
return 1;
}
int display_count = 0;
for (CGDisplayCount online_display_index = 0;
online_display_index < online_display_count;
++online_display_index) {
CGDirectDisplayID online_display = online_displays[online_display_index];
if (CGDisplayMirrorsDisplay(online_display) == kCGNullDirectDisplay) {
// If this display doesn't mirror any other, include it in the count.
// The primary display in a mirrored set will be counted, but those that
// mirror it will not be.
++display_count;
}
}
return display_count;
}
} // namespace base
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