Move base to DEPS

base/debug/crash_logging.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/debug/crash_logging.h"
-
-#include <cmath>
-#include <map>
-
-#include "base/debug/stack_trace.h"
-#include "base/format_macros.h"
-#include "base/logging.h"
-#include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
-
-namespace base {
-namespace debug {
-
-namespace {
-
-// Global map of crash key names to registration entries.
-typedef std::map<base::StringPiece, CrashKey> CrashKeyMap;
-CrashKeyMap* g_crash_keys_ = NULL;
-
-// The maximum length of a single chunk.
-size_t g_chunk_max_length_ = 0;
-
-// String used to format chunked key names.
-const char kChunkFormatString[] = "%s-%" PRIuS;
-
-// The functions that are called to actually set the key-value pairs in the
-// crash reportng system.
-SetCrashKeyValueFuncT g_set_key_func_ = NULL;
-ClearCrashKeyValueFuncT g_clear_key_func_ = NULL;
-
-// For a given |length|, computes the number of chunks a value of that size
-// will occupy.
-size_t NumChunksForLength(size_t length) {
-  // Compute (length / g_chunk_max_length_), rounded up.
-  return (length + g_chunk_max_length_ - 1) / g_chunk_max_length_;
-}
-
-// The longest max_length allowed by the system.
-const size_t kLargestValueAllowed = 1024;
-
-}  // namespace
-
-void SetCrashKeyValue(const base::StringPiece& key,
-                      const base::StringPiece& value) {
-  if (!g_set_key_func_ || !g_crash_keys_)
-    return;
-
-  const CrashKey* crash_key = LookupCrashKey(key);
-
-  DCHECK(crash_key) << "All crash keys must be registered before use "
-                    << "(key = " << key << ")";
-
-  // Handle the un-chunked case.
-  if (!crash_key || crash_key->max_length <= g_chunk_max_length_) {
-    g_set_key_func_(key, value);
-    return;
-  }
-
-  // Unset the unused chunks.
-  std::vector<std::string> chunks =
-      ChunkCrashKeyValue(*crash_key, value, g_chunk_max_length_);
-  for (size_t i = chunks.size();
-       i < NumChunksForLength(crash_key->max_length);
-       ++i) {
-    g_clear_key_func_(base::StringPrintf(kChunkFormatString, key.data(), i+1));
-  }
-
-  // Set the chunked keys.
-  for (size_t i = 0; i < chunks.size(); ++i) {
-    g_set_key_func_(base::StringPrintf(kChunkFormatString, key.data(), i+1),
-                    chunks[i]);
-  }
-}
-
-void ClearCrashKey(const base::StringPiece& key) {
-  if (!g_clear_key_func_ || !g_crash_keys_)
-    return;
-
-  const CrashKey* crash_key = LookupCrashKey(key);
-
-  // Handle the un-chunked case.
-  if (!crash_key || crash_key->max_length <= g_chunk_max_length_) {
-    g_clear_key_func_(key);
-    return;
-  }
-
-  for (size_t i = 0; i < NumChunksForLength(crash_key->max_length); ++i) {
-    g_clear_key_func_(base::StringPrintf(kChunkFormatString, key.data(), i+1));
-  }
-}
-
-void SetCrashKeyToStackTrace(const base::StringPiece& key,
-                             const StackTrace& trace) {
-  size_t count = 0;
-  const void* const* addresses = trace.Addresses(&count);
-  SetCrashKeyFromAddresses(key, addresses, count);
-}
-
-void SetCrashKeyFromAddresses(const base::StringPiece& key,
-                              const void* const* addresses,
-                              size_t count) {
-  std::string value = "<null>";
-  if (addresses && count) {
-    const size_t kBreakpadValueMax = 255;
-
-    std::vector<std::string> hex_backtrace;
-    size_t length = 0;
-
-    for (size_t i = 0; i < count; ++i) {
-      std::string s = base::StringPrintf("%p", addresses[i]);
-      length += s.length() + 1;
-      if (length > kBreakpadValueMax)
-        break;
-      hex_backtrace.push_back(s);
-    }
-
-    value = base::JoinString(hex_backtrace, " ");
-
-    // Warn if this exceeds the breakpad limits.
-    DCHECK_LE(value.length(), kBreakpadValueMax);
-  }
-
-  SetCrashKeyValue(key, value);
-}
-
-ScopedCrashKey::ScopedCrashKey(const base::StringPiece& key,
-                               const base::StringPiece& value)
-    : key_(key.as_string()) {
-  SetCrashKeyValue(key, value);
-}
-
-ScopedCrashKey::~ScopedCrashKey() {
-  ClearCrashKey(key_);
-}
-
-size_t InitCrashKeys(const CrashKey* const keys, size_t count,
-                     size_t chunk_max_length) {
-  DCHECK(!g_crash_keys_) << "Crash logging may only be initialized once";
-  if (!keys) {
-    delete g_crash_keys_;
-    g_crash_keys_ = NULL;
-    return 0;
-  }
-
-  g_crash_keys_ = new CrashKeyMap;
-  g_chunk_max_length_ = chunk_max_length;
-
-  size_t total_keys = 0;
-  for (size_t i = 0; i < count; ++i) {
-    g_crash_keys_->insert(std::make_pair(keys[i].key_name, keys[i]));
-    total_keys += NumChunksForLength(keys[i].max_length);
-    DCHECK_LT(keys[i].max_length, kLargestValueAllowed);
-  }
-  DCHECK_EQ(count, g_crash_keys_->size())
-      << "Duplicate crash keys were registered";
-
-  return total_keys;
-}
-
-const CrashKey* LookupCrashKey(const base::StringPiece& key) {
-  if (!g_crash_keys_)
-    return NULL;
-  CrashKeyMap::const_iterator it = g_crash_keys_->find(key.as_string());
-  if (it == g_crash_keys_->end())
-    return NULL;
-  return &(it->second);
-}
-
-void SetCrashKeyReportingFunctions(
-    SetCrashKeyValueFuncT set_key_func,
-    ClearCrashKeyValueFuncT clear_key_func) {
-  g_set_key_func_ = set_key_func;
-  g_clear_key_func_ = clear_key_func;
-}
-
-std::vector<std::string> ChunkCrashKeyValue(const CrashKey& crash_key,
-                                            const base::StringPiece& value,
-                                            size_t chunk_max_length) {
-  std::string value_string = value.substr(0, crash_key.max_length).as_string();
-  std::vector<std::string> chunks;
-  for (size_t offset = 0; offset < value_string.length(); ) {
-    std::string chunk = value_string.substr(offset, chunk_max_length);
-    chunks.push_back(chunk);
-    offset += chunk.length();
-  }
-  return chunks;
-}
-
-void ResetCrashLoggingForTesting() {
-  delete g_crash_keys_;
-  g_crash_keys_ = NULL;
-  g_chunk_max_length_ = 0;
-  g_set_key_func_ = NULL;
-  g_clear_key_func_ = NULL;
-}
-
-}  // namespace debug
-}  // namespace base