extensions/common/features/feature_developer_mode_only.cc

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "extensions/common/features/feature_developer_mode_only.h"

#include <map>

#include "base/no_destructor.h"
#include "base/synchronization/lock.h"

namespace {

// A map between a profile (referenced by a unique id) and the current developer
// mode for that profile. Since different profiles have different developer
// modes, we need to have separate entries.
using CurrentDeveloperModeMap = std::map<int, bool>;

// In the renderer, the developer mode map can be checked on multiple threads
// (the main thread and worker threads). Ensure thread-safety by locking.
base::Lock& GetDeveloperModeMapLock() {
  static base::NoDestructor<base::Lock> g_lock;
  return *g_lock;
}

CurrentDeveloperModeMap& GetDeveloperModeMap() {
  GetDeveloperModeMapLock().AssertAcquired();
  static base::NoDestructor<CurrentDeveloperModeMap> map;
  return *map;
}

}  // namespace

namespace extensions {

// Returns the current developer mode for the given context_id.
bool GetCurrentDeveloperMode(int context_id) {
  base::AutoLock lock(GetDeveloperModeMapLock());
  CurrentDeveloperModeMap& map = GetDeveloperModeMap();
  auto iter = map.find(context_id);
  return iter != map.end() && iter->second;
}

// static
void SetCurrentDeveloperMode(int context_id, bool current_developer_mode) {
  base::AutoLock lock(GetDeveloperModeMapLock());
  GetDeveloperModeMap()[context_id] = current_developer_mode;
}

}  // namespace extensions