Implement SysInfo for iOS

BUG=NONE
TEST=NONE

Review URL: https://chromiumcodereview.appspot.com/10704123

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@146106 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 68 insertions, 0 deletions

diff --git a/base/sys_info_ios.mm b/base/sys_info_ios.mm
new file mode 100644
index 0000000..48c7bd9
--- /dev/null
+++ b/base/sys_info_ios.mm
@@ -0,0 +1,68 @@
+// Copyright (c) 2012 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"
+
+#import <UIKit/UIKit.h>
+#include <mach/mach.h>
+
+#include "base/logging.h"
+#include "base/mac/scoped_nsautorelease_pool.h"
+#include "base/sys_string_conversions.h"
+
+namespace base {
+
+// static
+std::string SysInfo::OperatingSystemName() {
+  base::mac::ScopedNSAutoreleasePool pool;
+  // Examples of returned value: 'iPhone OS' on iPad 5.1.1
+  // and iPhone 5.1.1.
+  return SysNSStringToUTF8([[UIDevice currentDevice] systemName]);
+}
+
+// static
+std::string SysInfo::OperatingSystemVersion() {
+  base::mac::ScopedNSAutoreleasePool pool;
+  return SysNSStringToUTF8([[UIDevice currentDevice] systemVersion]);
+}
+
+// static
+void SysInfo::OperatingSystemVersionNumbers(int32* major_version,
+                                            int32* minor_version,
+                                            int32* bugfix_version) {
+  base::mac::ScopedNSAutoreleasePool pool;
+  NSString* version = [[UIDevice currentDevice] systemVersion];
+  NSArray* version_info = [version componentsSeparatedByString:@"."];
+  NSUInteger length = [version_info count];
+
+  *major_version = [[version_info objectAtIndex:0] intValue];
+
+  if (length >= 2)
+    *minor_version = [[version_info objectAtIndex:1] intValue];
+  else
+    *minor_version = 0;
+
+  if (length >= 3)
+    *bugfix_version = [[version_info objectAtIndex:2] intValue];
+  else
+    *bugfix_version = 0;
+}
+
+// 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);
+  if (result != KERN_SUCCESS) {
+    NOTREACHED();
+    return 0;
+  }
+  DCHECK_EQ(HOST_BASIC_INFO_COUNT, count);
+  return static_cast<int64>(hostinfo.max_mem);
+}
+
+}  // namespace base