diff options
Diffstat (limited to 'lib/Support/Windows/Process.inc')
| -rw-r--r-- | lib/Support/Windows/Process.inc | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/lib/Support/Windows/Process.inc b/lib/Support/Windows/Process.inc index a87c9e88c7..c3df801dc0 100644 --- a/lib/Support/Windows/Process.inc +++ b/lib/Support/Windows/Process.inc @@ -82,16 +82,14 @@ TimeValue self_process::get_system_time() const { return getTimeValueFromFILETIME(KernelTime); } -// This function retrieves the page size using GetSystemInfo and is present -// solely so it can be called once to initialize the self_process member below. +// This function retrieves the page size using GetNativeSystemInfo() and is +// present solely so it can be called once to initialize the self_process member +// below. static unsigned getPageSize() { - // NOTE: A 32-bit application running under WOW64 is supposed to use - // GetNativeSystemInfo. However, this interface is not present prior - // to Windows XP so to use it requires dynamic linking. It is not clear - // how this affects the reported page size, if at all. One could argue - // that LLVM ought to run as 64-bits on a 64-bit system, anyway. + // GetNativeSystemInfo() provides the physical page size which may differ + // from GetSystemInfo() in 32-bit applications running under WOW64. SYSTEM_INFO info; - GetSystemInfo(&info); + GetNativeSystemInfo(&info); // FIXME: FileOffset in MapViewOfFile() should be aligned to not dwPageSize, // but dwAllocationGranularity. return static_cast<unsigned>(info.dwPageSize); |