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// Copyright 2011 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef NINJA_STAT_CACHE_H_
#define NINJA_STAT_CACHE_H_
#include <string>
#include "hash_map.h"
#include <string.h>
struct FileStat;
/// Mapping of path -> FileStat.
struct StatCache {
FileStat* GetFile(const std::string& path);
/// Dump the mapping to stdout (useful for debugging).
void Dump();
void Reload();
struct Key {
Key() : path(NULL) {}
Key(const char* p) : path(p) {}
const char* path;
bool operator==(const Key& other) const {
return strcmp(path, other.path) == 0;
}
};
struct KeyHash {
size_t operator()(const StatCache::Key& key) const {
#ifdef _MSC_VER
return stdext::hash<const char*>()(key.path);
#else
return __gnu_cxx::hash<const char*>()(key.path);
#endif
}
};
typedef hash_map<Key, FileStat*, KeyHash> Paths;
Paths paths_;
};
#endif // NINJA_STAT_CACHE_H_
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