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// Copyright (c) 2010 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 "ppapi/shared_impl/callback_tracker.h"
#include <algorithm>
#include "base/bind.h"
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/shared_impl/tracked_callback.h"
namespace ppapi {
// CallbackTracker -------------------------------------------------------------
CallbackTracker::CallbackTracker() {}
void CallbackTracker::AbortAll() {
// Iterate over a copy since |Abort()| calls |Remove()| (indirectly).
// TODO(viettrungluu): This obviously isn't so efficient.
CallbackSetMap pending_callbacks_copy = pending_callbacks_;
for (CallbackSetMap::iterator it1 = pending_callbacks_copy.begin();
it1 != pending_callbacks_copy.end();
++it1) {
for (CallbackSet::iterator it2 = it1->second.begin();
it2 != it1->second.end();
++it2) {
(*it2)->Abort();
}
}
}
void CallbackTracker::PostAbortForResource(PP_Resource resource_id) {
CHECK(resource_id != 0);
CallbackSetMap::iterator it1 = pending_callbacks_.find(resource_id);
if (it1 == pending_callbacks_.end())
return;
for (CallbackSet::iterator it2 = it1->second.begin();
it2 != it1->second.end();
++it2) {
// Post the abort.
(*it2)->PostAbort();
}
}
CallbackTracker::~CallbackTracker() {
// All callbacks must be aborted before destruction.
CHECK_EQ(0u, pending_callbacks_.size());
}
void CallbackTracker::Add(
const scoped_refptr<TrackedCallback>& tracked_callback) {
PP_Resource resource_id = tracked_callback->resource_id();
DCHECK(pending_callbacks_[resource_id].find(tracked_callback) ==
pending_callbacks_[resource_id].end());
pending_callbacks_[resource_id].insert(tracked_callback);
}
void CallbackTracker::Remove(
const scoped_refptr<TrackedCallback>& tracked_callback) {
CallbackSetMap::iterator map_it =
pending_callbacks_.find(tracked_callback->resource_id());
DCHECK(map_it != pending_callbacks_.end());
CallbackSet::iterator it = map_it->second.find(tracked_callback);
DCHECK(it != map_it->second.end());
map_it->second.erase(it);
// If there are no pending callbacks left for this ID, get rid of the entry.
if (map_it->second.empty())
pending_callbacks_.erase(map_it);
}
} // namespace ppapi
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