Restoring authorship annotation for Anton Samokhvalov <pg83@yandex.ru>. Commit 1 of 2.

1 files changed, 130 insertions, 130 deletions

diff --git a/contrib/libs/linuxvdso/original/vdso_support.h b/contrib/libs/linuxvdso/original/vdso_support.h
index 1ccf32c23b..99623338d2 100644
--- a/contrib/libs/linuxvdso/original/vdso_support.h
+++ b/contrib/libs/linuxvdso/original/vdso_support.h
@@ -1,132 +1,132 @@
-#pragma once
-
-// Copyright (c) 2008, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// ---
-// Author: Paul Pluzhnikov
-//
-// Allow dynamic symbol lookup in the kernel VDSO page.
-//
-// VDSO stands for "Virtual Dynamic Shared Object" -- a page of
-// executable code, which looks like a shared library, but doesn't
-// necessarily exist anywhere on disk, and which gets mmap()ed into
-// every process by kernels which support VDSO, such as 2.6.x for 32-bit
-// executables, and 2.6.24 and above for 64-bit executables.
-//
-// More details could be found here:
-// http://www.trilithium.com/johan/2005/08/linux-gate/
-//
-// VDSOSupport -- a class representing kernel VDSO (if present).
-//
-// Example usage:
-//  VDSOSupport vdso;
-//  VDSOSupport::SymbolInfo info;
-//  typedef (*FN)(unsigned *, void *, void *);
-//  FN fn = NULL;
-//  if (vdso.LookupSymbol("__vdso_getcpu", "LINUX_2.6", STT_FUNC, &info)) {
-//     fn = reinterpret_cast<FN>(info.address);
-//  }
-
-#ifndef BASE_VDSO_SUPPORT_H_
-#define BASE_VDSO_SUPPORT_H_
-
-#include "config.h"
-#include "elf_mem_image.h"
-
-#ifdef HAVE_ELF_MEM_IMAGE
-
-#define HAVE_VDSO_SUPPORT 1
-
-#include <stdlib.h>     // for NULL
-
-namespace base {
-
-// NOTE: this class may be used from within tcmalloc, and can not
-// use any memory allocation routines.
-class VDSOSupport {
- public:
-  VDSOSupport();
-
-  typedef ElfMemImage::SymbolInfo SymbolInfo;
-  typedef ElfMemImage::SymbolIterator SymbolIterator;
-
-  // Answers whether we have a vdso at all.
-  bool IsPresent() const { return image_.IsPresent(); }
-
-  // Allow to iterate over all VDSO symbols.
-  SymbolIterator begin() const { return image_.begin(); }
-  SymbolIterator end() const { return image_.end(); }
-
-  // Look up versioned dynamic symbol in the kernel VDSO.
-  // Returns false if VDSO is not present, or doesn't contain given
-  // symbol/version/type combination.
-  // If info_out != NULL, additional details are filled in.
-  bool LookupSymbol(const char *name, const char *version,
-                    int symbol_type, SymbolInfo *info_out) const;
-
-  // Find info about symbol (if any) which overlaps given address.
-  // Returns true if symbol was found; false if VDSO isn't present
-  // or doesn't have a symbol overlapping given address.
-  // If info_out != NULL, additional details are filled in.
-  bool LookupSymbolByAddress(const void *address, SymbolInfo *info_out) const;
-
-  // Used only for testing. Replace real VDSO base with a mock.
-  // Returns previous value of vdso_base_. After you are done testing,
-  // you are expected to call SetBase() with previous value, in order to
-  // reset state to the way it was.
-  const void *SetBase(const void *s);
-
-  // Computes vdso_base_ and returns it. Should be called as early as
-  // possible; before any thread creation, chroot or setuid.
-  static const void *Init();
-
- private:
-  // image_ represents VDSO ELF image in memory.
-  // image_.ehdr_ == NULL implies there is no VDSO.
-  ElfMemImage image_;
-
-  // Cached value of auxv AT_SYSINFO_EHDR, computed once.
-  // This is a tri-state:
+#pragma once 
+ 
+// Copyright (c) 2008, Google Inc. 
+// All rights reserved. 
+// 
+// Redistribution and use in source and binary forms, with or without 
+// modification, are permitted provided that the following conditions are 
+// met: 
+// 
+//     * Redistributions of source code must retain the above copyright 
+// notice, this list of conditions and the following disclaimer. 
+//     * Redistributions in binary form must reproduce the above 
+// copyright notice, this list of conditions and the following disclaimer 
+// in the documentation and/or other materials provided with the 
+// distribution. 
+//     * Neither the name of Google Inc. nor the names of its 
+// contributors may be used to endorse or promote products derived from 
+// this software without specific prior written permission. 
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ 
+// --- 
+// Author: Paul Pluzhnikov 
+// 
+// Allow dynamic symbol lookup in the kernel VDSO page. 
+// 
+// VDSO stands for "Virtual Dynamic Shared Object" -- a page of 
+// executable code, which looks like a shared library, but doesn't 
+// necessarily exist anywhere on disk, and which gets mmap()ed into 
+// every process by kernels which support VDSO, such as 2.6.x for 32-bit 
+// executables, and 2.6.24 and above for 64-bit executables. 
+// 
+// More details could be found here: 
+// http://www.trilithium.com/johan/2005/08/linux-gate/ 
+// 
+// VDSOSupport -- a class representing kernel VDSO (if present). 
+// 
+// Example usage: 
+//  VDSOSupport vdso; 
+//  VDSOSupport::SymbolInfo info; 
+//  typedef (*FN)(unsigned *, void *, void *); 
+//  FN fn = NULL; 
+//  if (vdso.LookupSymbol("__vdso_getcpu", "LINUX_2.6", STT_FUNC, &info)) { 
+//     fn = reinterpret_cast<FN>(info.address); 
+//  } 
+ 
+#ifndef BASE_VDSO_SUPPORT_H_ 
+#define BASE_VDSO_SUPPORT_H_ 
+ 
+#include "config.h" 
+#include "elf_mem_image.h" 
+ 
+#ifdef HAVE_ELF_MEM_IMAGE 
+ 
+#define HAVE_VDSO_SUPPORT 1 
+ 
+#include <stdlib.h>     // for NULL 
+ 
+namespace base { 
+ 
+// NOTE: this class may be used from within tcmalloc, and can not 
+// use any memory allocation routines. 
+class VDSOSupport { 
+ public: 
+  VDSOSupport(); 
+ 
+  typedef ElfMemImage::SymbolInfo SymbolInfo; 
+  typedef ElfMemImage::SymbolIterator SymbolIterator; 
+ 
+  // Answers whether we have a vdso at all. 
+  bool IsPresent() const { return image_.IsPresent(); } 
+ 
+  // Allow to iterate over all VDSO symbols. 
+  SymbolIterator begin() const { return image_.begin(); } 
+  SymbolIterator end() const { return image_.end(); } 
+ 
+  // Look up versioned dynamic symbol in the kernel VDSO. 
+  // Returns false if VDSO is not present, or doesn't contain given 
+  // symbol/version/type combination. 
+  // If info_out != NULL, additional details are filled in. 
+  bool LookupSymbol(const char *name, const char *version, 
+                    int symbol_type, SymbolInfo *info_out) const; 
+ 
+  // Find info about symbol (if any) which overlaps given address. 
+  // Returns true if symbol was found; false if VDSO isn't present 
+  // or doesn't have a symbol overlapping given address. 
+  // If info_out != NULL, additional details are filled in. 
+  bool LookupSymbolByAddress(const void *address, SymbolInfo *info_out) const; 
+ 
+  // Used only for testing. Replace real VDSO base with a mock. 
+  // Returns previous value of vdso_base_. After you are done testing, 
+  // you are expected to call SetBase() with previous value, in order to 
+  // reset state to the way it was. 
+  const void *SetBase(const void *s); 
+ 
+  // Computes vdso_base_ and returns it. Should be called as early as 
+  // possible; before any thread creation, chroot or setuid. 
+  static const void *Init(); 
+ 
+ private: 
+  // image_ represents VDSO ELF image in memory. 
+  // image_.ehdr_ == NULL implies there is no VDSO. 
+  ElfMemImage image_; 
+ 
+  // Cached value of auxv AT_SYSINFO_EHDR, computed once. 
+  // This is a tri-state: 
   //              0   => value hasn't been determined yet.
   //   kInvalidBase   => there is no VDSO.
-  //           else   => vma of VDSO Elf{32,64}_Ehdr.
-  //
-  // When testing with mock VDSO, low bit is set.
-  // The low bit is always available because vdso_base_ is
-  // page-aligned.
-  static const void *vdso_base_;
-
-  DISALLOW_COPY_AND_ASSIGN(VDSOSupport);
-};
-}  // namespace base
-
-#endif  // HAVE_ELF_MEM_IMAGE
-
-#endif  // BASE_VDSO_SUPPORT_H_
+  //           else   => vma of VDSO Elf{32,64}_Ehdr. 
+  // 
+  // When testing with mock VDSO, low bit is set. 
+  // The low bit is always available because vdso_base_ is 
+  // page-aligned. 
+  static const void *vdso_base_; 
+ 
+  DISALLOW_COPY_AND_ASSIGN(VDSOSupport); 
+}; 
+}  // namespace base 
+ 
+#endif  // HAVE_ELF_MEM_IMAGE 
+ 
+#endif  // BASE_VDSO_SUPPORT_H_