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//===-- ModuleCache.h -------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef utility_ModuleCache_h_
#define utility_ModuleCache_h_
#include "lldb/lldb-types.h"
#include "lldb/lldb-forward.h"
#include "lldb/Core/Error.h"
#include "lldb/Host/File.h"
#include "lldb/Host/FileSpec.h"
#include <functional>
#include <string>
#include <unordered_map>
namespace lldb_private {
class Module;
class UUID;
//----------------------------------------------------------------------
/// @class ModuleCache ModuleCache.h "Utility/ModuleCache.h"
/// @brief 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<Error (const ModuleSpec&, const FileSpec&)>;
using SymfileDownloader = std::function<Error (const lldb::ModuleSP&, const FileSpec&)>;
Error
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:
Error
Put (const FileSpec &root_dir_spec,
const char *hostname,
const ModuleSpec &module_spec,
const FileSpec &tmp_file,
const FileSpec &target_file);
Error
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_
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