82abefa4b1
Summary: The usage of shared_from_this forces us to separate construction and initialization phases, because shared_from_this() is not available in the constructor (or destructor). The shared semantics are not necessary, as we always have a clear owner of the native process class (GDBRemoteCommunicationServerLLDB object). Even if we need shared semantics in the future (which I think we should strongly avoid), reverting this will not be necessary -- the owners can still easily store the native process object in a shared pointer if they really want to -- this just prevents the knowledge of that from leaking into the class implementation. After this a NativeThread object will hold a reference to the parent process (instead of a weak_ptr) -- having a process instance always available allows us to simplify some logic in this class (some of it was already simplified because we were asserting that the process is available, but this makes it obvious). Reviewers: krytarowski, eugene, zturner Subscribers: lldb-commits Differential Revision: https://reviews.llvm.org/D35123 llvm-svn: 308282
145 lines
5.0 KiB
C++
145 lines
5.0 KiB
C++
//===-- NativeProcessNetBSD.h --------------------------------- -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef liblldb_NativeProcessNetBSD_H_
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#define liblldb_NativeProcessNetBSD_H_
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// C++ Includes
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// Other libraries and framework includes
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#include "lldb/Core/ArchSpec.h"
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#include "lldb/Target/MemoryRegionInfo.h"
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#include "lldb/Utility/FileSpec.h"
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#include "NativeThreadNetBSD.h"
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#include "lldb/Host/common/NativeProcessProtocol.h"
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namespace lldb_private {
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namespace process_netbsd {
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/// @class NativeProcessNetBSD
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/// @brief Manages communication with the inferior (debugee) process.
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///
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/// Upon construction, this class prepares and launches an inferior process for
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/// debugging.
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///
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/// Changes in the inferior process state are broadcasted.
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class NativeProcessNetBSD : public NativeProcessProtocol {
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public:
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class Factory : public NativeProcessProtocol::Factory {
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public:
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llvm::Expected<std::unique_ptr<NativeProcessProtocol>>
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Launch(ProcessLaunchInfo &launch_info, NativeDelegate &native_delegate,
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MainLoop &mainloop) const override;
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llvm::Expected<std::unique_ptr<NativeProcessProtocol>>
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Attach(lldb::pid_t pid, NativeDelegate &native_delegate,
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MainLoop &mainloop) const override;
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};
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// ---------------------------------------------------------------------
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// NativeProcessProtocol Interface
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// ---------------------------------------------------------------------
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Status Resume(const ResumeActionList &resume_actions) override;
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Status Halt() override;
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Status Detach() override;
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Status Signal(int signo) override;
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Status Kill() override;
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Status GetMemoryRegionInfo(lldb::addr_t load_addr,
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MemoryRegionInfo &range_info) override;
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Status ReadMemory(lldb::addr_t addr, void *buf, size_t size,
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size_t &bytes_read) override;
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Status ReadMemoryWithoutTrap(lldb::addr_t addr, void *buf, size_t size,
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size_t &bytes_read) override;
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Status WriteMemory(lldb::addr_t addr, const void *buf, size_t size,
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size_t &bytes_written) override;
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Status AllocateMemory(size_t size, uint32_t permissions,
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lldb::addr_t &addr) override;
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Status DeallocateMemory(lldb::addr_t addr) override;
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lldb::addr_t GetSharedLibraryInfoAddress() override;
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size_t UpdateThreads() override;
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bool GetArchitecture(ArchSpec &arch) const override;
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Status SetBreakpoint(lldb::addr_t addr, uint32_t size,
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bool hardware) override;
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Status GetLoadedModuleFileSpec(const char *module_path,
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FileSpec &file_spec) override;
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Status GetFileLoadAddress(const llvm::StringRef &file_name,
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lldb::addr_t &load_addr) override;
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llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>>
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GetAuxvData() const override;
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// ---------------------------------------------------------------------
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// Interface used by NativeRegisterContext-derived classes.
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// ---------------------------------------------------------------------
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static Status PtraceWrapper(int req, lldb::pid_t pid, void *addr = nullptr,
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int data = 0, int *result = nullptr);
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protected:
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// ---------------------------------------------------------------------
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// NativeProcessProtocol protected interface
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// ---------------------------------------------------------------------
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Status
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GetSoftwareBreakpointTrapOpcode(size_t trap_opcode_size_hint,
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size_t &actual_opcode_size,
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const uint8_t *&trap_opcode_bytes) override;
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private:
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MainLoop::SignalHandleUP m_sigchld_handle;
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ArchSpec m_arch;
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LazyBool m_supports_mem_region = eLazyBoolCalculate;
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std::vector<std::pair<MemoryRegionInfo, FileSpec>> m_mem_region_cache;
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// ---------------------------------------------------------------------
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// Private Instance Methods
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// ---------------------------------------------------------------------
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NativeProcessNetBSD(::pid_t pid, int terminal_fd, NativeDelegate &delegate,
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const ArchSpec &arch, MainLoop &mainloop);
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bool HasThreadNoLock(lldb::tid_t thread_id);
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NativeThreadNetBSDSP AddThread(lldb::tid_t thread_id);
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void MonitorCallback(lldb::pid_t pid, int signal);
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void MonitorExited(lldb::pid_t pid, WaitStatus status);
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void MonitorSIGSTOP(lldb::pid_t pid);
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void MonitorSIGTRAP(lldb::pid_t pid);
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void MonitorSignal(lldb::pid_t pid, int signal);
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Status GetSoftwareBreakpointPCOffset(uint32_t &actual_opcode_size);
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Status FixupBreakpointPCAsNeeded(NativeThreadNetBSD &thread);
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Status PopulateMemoryRegionCache();
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void SigchldHandler();
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Status Attach();
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Status ReinitializeThreads();
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};
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} // namespace process_netbsd
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} // namespace lldb_private
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#endif // #ifndef liblldb_NativeProcessNetBSD_H_
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