Index: detail/os_file_functions.hpp
===================================================================
--- detail/os_file_functions.hpp	(revision 2612)
+++ detail/os_file_functions.hpp	(working copy)
@@ -124,6 +124,14 @@
       (name, (unsigned int)mode, winapi::open_existing, attr, 0);
 }
 
+inline file_handle_t open_existing_file
+(const wchar_t *name, mode_t mode, bool temporary = false)
+{
+    unsigned long attr = temporary ? winapi::file_attribute_temporary : 0;
+    return winapi::create_file
+        (name, (unsigned int)mode, winapi::open_existing, attr, 0);
+}
+
 inline bool delete_file(const char *name)
 {  return winapi::unlink_file(name);   }
 
Index: detail/win32_api.hpp
===================================================================
--- detail/win32_api.hpp	(revision 2612)
+++ detail/win32_api.hpp	(working copy)
@@ -914,6 +914,7 @@
 extern "C" __declspec(dllimport) void * __stdcall MapViewOfFileEx (void *, unsigned long, unsigned long, unsigned long, std::size_t, void*);
 extern "C" __declspec(dllimport) void * __stdcall OpenFileMappingA (unsigned long, int, const char *);
 extern "C" __declspec(dllimport) void * __stdcall CreateFileA (const char *, unsigned long, unsigned long, struct interprocess_security_attributes*, unsigned long, unsigned long, void *);
+extern "C" __declspec(dllimport) void * __stdcall CreateFileW (const wchar_t *, unsigned long, unsigned long, struct interprocess_security_attributes*, unsigned long, unsigned long, void *);
 extern "C" __declspec(dllimport) void __stdcall GetSystemInfo (struct system_info *);
 extern "C" __declspec(dllimport) int __stdcall FlushViewOfFile (void *, std::size_t);
 extern "C" __declspec(dllimport) int __stdcall VirtualUnlock (void *, std::size_t);
@@ -1193,6 +1194,24 @@
    return invalid_handle_value;
 }
 
+inline void *create_file(const wchar_t *name, unsigned long access, unsigned long creation_flags, unsigned long attributes, interprocess_security_attributes *psec)
+{
+    for (unsigned int attempt(0); attempt < error_sharing_violation_tries; ++attempt) {
+        void * const handle = CreateFileW(name, access,
+            file_share_read | file_share_write | file_share_delete,
+            psec, creation_flags, attributes, 0);
+        bool const invalid(invalid_handle_value == handle);
+        if (!invalid) {
+            return handle;
+        }
+        if (error_sharing_violation != get_last_error()) {
+            return handle;
+        }
+        sleep(error_sharing_violation_sleep_ms);
+    }
+    return invalid_handle_value;
+}
+
 inline void get_system_info(system_info *info)
 {  GetSystemInfo(info); }
 
Index: sync/file_lock.hpp
===================================================================
--- sync/file_lock.hpp	(revision 2612)
+++ sync/file_lock.hpp	(working copy)
@@ -53,6 +53,7 @@
    //!Opens a file lock. Throws interprocess_exception if the file does not
    //!exist or there are no operating system resources.
    file_lock(const char *name);
+   file_lock(const wchar_t *name);
 
    //!Moves the ownership of "moved"'s file mapping object to *this.
    //!After the call, "moved" does not represent any file mapping object.
@@ -211,6 +212,16 @@
    }
 }
 
+inline file_lock::file_lock(const wchar_t *name)
+{
+    m_file_hnd = ipcdetail::open_existing_file(name, read_write);
+
+    if (m_file_hnd == ipcdetail::invalid_file()) {
+        error_info err(system_error_code());
+        throw interprocess_exception(err);
+    }
+}
+
 inline file_lock::~file_lock()
 {
    if(m_file_hnd != ipcdetail::invalid_file()){