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| //===-- ModuleCache.h -------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLDB_TARGET_MODULECACHE_H
#define LLDB_TARGET_MODULECACHE_H
#include "lldb/lldb-forward.h"
#include "lldb/lldb-types.h"
#include "lldb/Host/File.h"
#include "lldb/Utility/FileSpec.h"
#include "lldb/Utility/Status.h"
#include <functional>
#include <string>
#include <unordered_map>
namespace lldb_private {
class Module;
class UUID;
/// \class ModuleCache ModuleCache.h "lldb/Target/ModuleCache.h"
/// A module cache class.
///
/// Caches locally modules that are downloaded from remote targets. Each
/// cached module maintains 2 views:
/// - UUID view:
/// /${CACHE_ROOT}/${PLATFORM_NAME}/.cache/${UUID}/${MODULE_FILENAME}
/// - Sysroot view:
/// /${CACHE_ROOT}/${PLATFORM_NAME}/${HOSTNAME}/${MODULE_FULL_FILEPATH}
///
/// UUID views stores a real module file, whereas Sysroot view holds a symbolic
/// link to UUID-view file.
///
/// Example:
/// UUID view :
/// /tmp/lldb/remote-
/// linux/.cache/30C94DC6-6A1F-E951-80C3-D68D2B89E576-D5AE213C/libc.so.6
/// Sysroot view: /tmp/lldb/remote-linux/ubuntu/lib/x86_64-linux-gnu/libc.so.6
class ModuleCache {
public:
using ModuleDownloader =
std::function<Status(const ModuleSpec &, const FileSpec &)>;
using SymfileDownloader =
std::function<Status(const lldb::ModuleSP &, const FileSpec &)>;
Status GetAndPut(const FileSpec &root_dir_spec, const char *hostname,
const ModuleSpec &module_spec,
const ModuleDownloader &module_downloader,
const SymfileDownloader &symfile_downloader,
lldb::ModuleSP &cached_module_sp, bool *did_create_ptr);
private:
Status Put(const FileSpec &root_dir_spec, const char *hostname,
const ModuleSpec &module_spec, const FileSpec &tmp_file,
const FileSpec &target_file);
Status Get(const FileSpec &root_dir_spec, const char *hostname,
const ModuleSpec &module_spec, lldb::ModuleSP &cached_module_sp,
bool *did_create_ptr);
std::unordered_map<std::string, lldb::ModuleWP> m_loaded_modules;
};
} // namespace lldb_private
#endif // utility_ModuleCache_h_
|