The Tor Browser: security/sandbox/chromium/base/location.cc@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.

     2 // Use of this source code is governed by a BSD-style license that can be

     3 // found in the LICENSE file.

     5 #include "build/build_config.h"

     7 #if defined(COMPILER_MSVC)

     8 // MSDN says to #include <intrin.h>, but that breaks the VS2005 build.

     9 extern "C" {

    10   void* _ReturnAddress();

    11 }

    12 #endif

    14 #include "base/location.h"

    15 #include "base/strings/string_number_conversions.h"

    16 #include "base/strings/stringprintf.h"

    18 namespace tracked_objects {

    20 Location::Location(const char* function_name,

    21                    const char* file_name,

    22                    int line_number,

    23                    const void* program_counter)

    24     : function_name_(function_name),

    25       file_name_(file_name),

    26       line_number_(line_number),

    27       program_counter_(program_counter) {

    28 }

    30 Location::Location()

    31     : function_name_("Unknown"),

    32       file_name_("Unknown"),

    33       line_number_(-1),

    34       program_counter_(NULL) {

    35 }

    37 std::string Location::ToString() const {

    38   return std::string(function_name_) + "@" + file_name_ + ":" +

    39       base::IntToString(line_number_);

    40 }

    42 void Location::Write(bool display_filename, bool display_function_name,

    43                      std::string* output) const {

    44   base::StringAppendF(output, "%s[%d] ",

    45       display_filename ? file_name_ : "line",

    46       line_number_);

    48   if (display_function_name) {

    49     WriteFunctionName(output);

    50     output->push_back(' ');

    51   }

    52 }

    54 void Location::WriteFunctionName(std::string* output) const {

    55   // Translate "<" to "&lt;" for HTML safety.

    56   // TODO(jar): Support ASCII or html for logging in ASCII.

    57   for (const char *p = function_name_; *p; p++) {

    58     switch (*p) {

    59       case '<':

    60         output->append("&lt;");

    61         break;

    63       case '>':

    64         output->append("&gt;");

    65         break;

    67       default:

    68         output->push_back(*p);

    69         break;

    70     }

    71   }

    72 }

    74 //------------------------------------------------------------------------------

    75 LocationSnapshot::LocationSnapshot() : line_number(-1) {

    76 }

    78 LocationSnapshot::LocationSnapshot(

    79     const tracked_objects::Location& location)

    80     : file_name(location.file_name()),

    81       function_name(location.function_name()),

    82       line_number(location.line_number()) {

    83 }

    85 LocationSnapshot::~LocationSnapshot() {

    86 }

    88 //------------------------------------------------------------------------------

    89 #if defined(COMPILER_MSVC)

    90 __declspec(noinline)

    91 #endif

    92 BASE_EXPORT const void* GetProgramCounter() {

    93 #if defined(COMPILER_MSVC)

    94   return _ReturnAddress();

    95 #elif defined(COMPILER_GCC)

    96   return __builtin_extract_return_addr(__builtin_return_address(0));

    97 #endif  // COMPILER_GCC

    99   return NULL;

   100 }

   102 }  // namespace tracked_objects

The Tor Browser / file revision

security/sandbox/chromium/base/location.cc@97036ab72558

security/sandbox/chromium/base/location.cc