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//===-- SectionLoadHistory.h ------------------------------------*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include <map>
#include <mutex>
#include "lldb/lldb-public.h"
namespace lldb_private {
class SectionLoadHistory {
enum : unsigned {
// Pass eStopIDNow to any function that takes a stop ID to get the current
// value.
eStopIDNow = UINT32_MAX
// Constructors and Destructors
SectionLoadHistory() : m_stop_id_to_section_load_list(), m_mutex() {}
~SectionLoadHistory() {
// Call clear since this takes a lock and clears the section load list in
// case another thread is currently using this section load list
SectionLoadList &GetCurrentSectionLoadList();
bool IsEmpty() const;
void Clear();
uint32_t GetLastStopID() const;
// Get the section load address given a process stop ID
lldb::addr_t GetSectionLoadAddress(uint32_t stop_id,
const lldb::SectionSP &section_sp);
bool ResolveLoadAddress(uint32_t stop_id, lldb::addr_t load_addr,
Address &so_addr);
bool SetSectionLoadAddress(uint32_t stop_id,
const lldb::SectionSP &section_sp,
lldb::addr_t load_addr,
bool warn_multiple = false);
// The old load address should be specified when unloading to ensure we get
// the correct instance of the section as a shared library could be loaded at
// more than one location.
bool SetSectionUnloaded(uint32_t stop_id, const lldb::SectionSP &section_sp,
lldb::addr_t load_addr);
// Unload all instances of a section. This function can be used on systems
// that don't support multiple copies of the same shared library to be loaded
// at the same time.
size_t SetSectionUnloaded(uint32_t stop_id,
const lldb::SectionSP &section_sp);
void Dump(Stream &s, Target *target);
SectionLoadList *GetSectionLoadListForStopID(uint32_t stop_id,
bool read_only);
typedef std::map<uint32_t, lldb::SectionLoadListSP> StopIDToSectionLoadList;
StopIDToSectionLoadList m_stop_id_to_section_load_list;
mutable std::recursive_mutex m_mutex;
SectionLoadHistory(const SectionLoadHistory &) = delete;
const SectionLoadHistory &operator=(const SectionLoadHistory &) = delete;
} // namespace lldb_private