posix: move mac-specific code into mac-specific file
No functional change, just cleanup.
Review URL: http://codereview.chromium.org/384069
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@31758 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/sys_info_mac.cc b/base/sys_info_mac.cc
index 54b7320..79caf55 100644
--- a/base/sys_info_mac.cc
+++ b/base/sys_info_mac.cc
@@ -4,7 +4,12 @@
#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 {
@@ -20,4 +25,65 @@
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
