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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// This file contains the implementation of ResourceMapBase.
#include "gpu/command_buffer/service/precompile.h"
#include "gpu/command_buffer/service/resource.h"
namespace gpu {
// Assigns a resource to a resource ID, by setting it at the right location
// into the list, resizing the list if necessary, and destroying an existing
// resource if one existed already.
void ResourceMapBase::Assign(ResourceId id, Resource *resource) {
if (id >= resources_.size()) {
resources_.resize(id + 1, NULL);
} else {
Resource *&entry = resources_[id];
if (entry) {
delete entry;
entry = NULL;
}
}
DCHECK(resources_[id] == NULL);
resources_[id] = resource;
}
// Destroys a resource contained in the map, setting its entry to NULL. If
// necessary, this will trim the list.
bool ResourceMapBase::Destroy(ResourceId id) {
if (id >= resources_.size()) {
return false;
}
Resource *&entry = resources_[id];
if (entry) {
delete entry;
entry = NULL;
// Removing the last element, we can trim the list.
// TODO: this may not be optimal to do every time. Investigate if it
// becomes an issue, and add a threshold before we resize.
if (id == resources_.size() - 1) {
size_t last_valid = resources_.max_size();
for (unsigned int i = id; i < resources_.size(); --i) {
if (resources_[i]) {
last_valid = i;
break;
}
}
if (last_valid == resources_.max_size()) {
resources_.clear();
} else {
resources_.resize(last_valid + 1);
}
}
return true;
}
return false;
}
// Goes over all non-NULL entries in the list, destroying them, then clears the
// list.
void ResourceMapBase::DestroyAllResources() {
for (Container::iterator i = resources_.begin(); i != resources_.end(); ++i) {
if (*i) {
delete *i;
}
}
resources_.clear();
}
} // namespace gpu
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