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// Copyright 2014 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 "mojo/public/cpp/environment/environment.h"
#include <assert.h>
#include "mojo/public/c/environment/logger.h"
#include "mojo/public/cpp/environment/lib/default_async_waiter.h"
#include "mojo/public/cpp/environment/lib/default_logger.h"
#include "mojo/public/cpp/environment/lib/default_task_tracker.h"
#include "mojo/public/cpp/utility/run_loop.h"
namespace mojo {
namespace {
const MojoAsyncWaiter* g_default_async_waiter = nullptr;
const MojoLogger* g_default_logger = nullptr;
const TaskTracker* g_default_task_tracker = nullptr;
void Init(const MojoAsyncWaiter* default_async_waiter,
const MojoLogger* default_logger,
const TaskTracker* default_task_tracker) {
g_default_async_waiter = default_async_waiter
? default_async_waiter
: &internal::kDefaultAsyncWaiter;
g_default_logger =
default_logger ? default_logger : &internal::kDefaultLogger;
g_default_task_tracker = default_task_tracker
? default_task_tracker
: &internal::kDefaultTaskTracker;
RunLoop::SetUp();
}
} // namespace
Environment::Environment() {
Init(nullptr, nullptr, nullptr);
}
Environment::Environment(const MojoAsyncWaiter* default_async_waiter,
const MojoLogger* default_logger,
const TaskTracker* default_task_tracker) {
Init(default_async_waiter, default_logger, default_task_tracker);
}
Environment::~Environment() {
RunLoop::TearDown();
// TODO(vtl): Maybe we should allow nesting, and restore previous default
// async waiters and loggers?
g_default_async_waiter = nullptr;
g_default_logger = nullptr;
}
// static
const MojoAsyncWaiter* Environment::GetDefaultAsyncWaiter() {
assert(g_default_async_waiter); // Fails if not "inside" |Environment|.
return g_default_async_waiter;
}
// static
const MojoLogger* Environment::GetDefaultLogger() {
assert(g_default_logger); // Fails if not "inside" |Environment|.
return g_default_logger;
}
// static
const TaskTracker* Environment::GetDefaultTaskTracker() {
return g_default_task_tracker;
}
// static
void Environment::InstantiateDefaultRunLoop() {
assert(!RunLoop::current());
// Not leaked: accessible from |RunLoop::current()|.
RunLoop* run_loop = new RunLoop();
ALLOW_UNUSED_LOCAL(run_loop);
assert(run_loop == RunLoop::current());
}
// static
void Environment::DestroyDefaultRunLoop() {
assert(RunLoop::current());
delete RunLoop::current();
assert(!RunLoop::current());
}
} // namespace mojo
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