Under the OS X Sandbox, some system calls are blocked.

This CL adds a facility to cache system info values on renderer startup.

Review URL: http://codereview.chromium.org/20250

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@9545 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 9 insertions, 1 deletions

diff --git a/base/sys_info.h b/base/sys_info.h
index 46029cc..35d371b 100644
--- a/base/sys_info.h
+++ b/base/sys_info.h
@@ -15,7 +15,7 @@ class SysInfo {
  public:
   // Return the number of logical processors/cores on the current machine.
   static int NumberOfProcessors();
-  
+
   // Return the number of bytes of physical memory on the current machine.
   static int64 AmountOfPhysicalMemory();
 
@@ -57,6 +57,14 @@ class SysInfo {
   // Return the smallest amount of memory (in bytes) which the VM system will
   // allocate.
   static size_t VMAllocationGranularity();
+
+#if defined(OS_MACOSX)
+  // Under the OS X Sandbox, our access to the system is limited, this call
+  // caches the system info on startup before we turn the Sandbox on.
+  // The above functions are all wired up to return the cached value so the rest
+  // of the code can call them in the Sandbox without worrying.
+  static void CacheSysInfo();
+#endif
 };
 
 }  // namespace base