62930e57eb
Summary: There was some confusion in the code about how to represent process environment. Most of the code (ab)used the Args class for this purpose, but some of it used a more basic StringList class instead. In either case, the fact that the underlying abstraction did not provide primitive operations for the typical environment operations meant that even a simple operation like checking for an environment variable value was several lines of code. This patch adds a separate Environment class, which is essentialy a llvm::StringMap<std::string> in disguise. To standard StringMap functionality, it adds a couple of new functions, which are specific to the environment use case: - (most important) envp conversion for passing into execve() and likes. Instead of trying to maintain a constantly up-to-date envp view, it provides a function which creates a envp view on demand, with the expectation that this will be called as the very last thing before handing the value to the system function. - insert(StringRef KeyEqValue) - splits KeyEqValue into (key, value) pair and inserts it into the environment map. - compose(value_type KeyValue) - takes a map entry and converts in back into "KEY=VALUE" representation. With this interface most of the environment-manipulating code becomes one-liners. The only tricky part was maintaining compatibility in SBLaunchInfo, which expects that the environment entries are accessible by index and that the returned const char* is backed by the launch info object (random access into maps is hard and the map stores the entry in a deconstructed form, so we cannot just return a .c_str() value). To solve this, I have the SBLaunchInfo convert the environment into the "envp" form, and use it to answer the environment queries. Extra code is added to make sure the envp version is always in sync. (This also improves the layering situation as Args was in the Interpreter module whereas Environment is in Utility.) Reviewers: zturner, davide, jingham, clayborg Subscribers: emaste, lldb-commits, mgorny Differential Revision: https://reviews.llvm.org/D41359 llvm-svn: 322174
138 lines
4.5 KiB
C++
138 lines
4.5 KiB
C++
//===-- PlatformWindows.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_PlatformWindows_h_
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#define liblldb_PlatformWindows_h_
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Target/Platform.h"
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namespace lldb_private {
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class PlatformWindows : public Platform {
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public:
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PlatformWindows(bool is_host);
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~PlatformWindows() override;
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static void Initialize();
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static void Terminate();
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//------------------------------------------------------------
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// lldb_private::PluginInterface functions
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//------------------------------------------------------------
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static lldb::PlatformSP CreateInstance(bool force,
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const lldb_private::ArchSpec *arch);
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static lldb_private::ConstString GetPluginNameStatic(bool is_host);
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static const char *GetPluginDescriptionStatic(bool is_host);
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lldb_private::ConstString GetPluginName() override;
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uint32_t GetPluginVersion() override { return 1; }
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//------------------------------------------------------------
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// lldb_private::Platform functions
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//------------------------------------------------------------
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bool GetModuleSpec(const lldb_private::FileSpec &module_file_spec,
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const lldb_private::ArchSpec &arch,
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lldb_private::ModuleSpec &module_spec) override;
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Status
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ResolveExecutable(const lldb_private::ModuleSpec &module_spec,
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lldb::ModuleSP &module_sp,
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const FileSpecList *module_search_paths_ptr) override;
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const char *GetDescription() override {
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return GetPluginDescriptionStatic(IsHost());
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}
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bool GetRemoteOSVersion() override;
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bool GetRemoteOSBuildString(std::string &s) override;
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bool GetRemoteOSKernelDescription(std::string &s) override;
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// Remote Platform subclasses need to override this function
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lldb_private::ArchSpec GetRemoteSystemArchitecture() override;
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bool IsConnected() const override;
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lldb_private::Status ConnectRemote(lldb_private::Args &args) override;
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lldb_private::Status DisconnectRemote() override;
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const char *GetHostname() override;
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const char *GetUserName(uint32_t uid) override;
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const char *GetGroupName(uint32_t gid) override;
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bool GetProcessInfo(lldb::pid_t pid,
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lldb_private::ProcessInstanceInfo &proc_info) override;
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uint32_t
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FindProcesses(const lldb_private::ProcessInstanceInfoMatch &match_info,
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lldb_private::ProcessInstanceInfoList &process_infos) override;
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lldb_private::Status
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LaunchProcess(lldb_private::ProcessLaunchInfo &launch_info) override;
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lldb::ProcessSP DebugProcess(lldb_private::ProcessLaunchInfo &launch_info,
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lldb_private::Debugger &debugger,
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lldb_private::Target *target,
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lldb_private::Status &error) override;
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lldb::ProcessSP Attach(lldb_private::ProcessAttachInfo &attach_info,
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lldb_private::Debugger &debugger,
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lldb_private::Target *target,
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lldb_private::Status &error) override;
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lldb_private::Status
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GetFileWithUUID(const lldb_private::FileSpec &platform_file,
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const lldb_private::UUID *uuid,
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lldb_private::FileSpec &local_file) override;
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lldb_private::Status
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GetSharedModule(const lldb_private::ModuleSpec &module_spec,
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lldb_private::Process *process, lldb::ModuleSP &module_sp,
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const lldb_private::FileSpecList *module_search_paths_ptr,
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lldb::ModuleSP *old_module_sp_ptr,
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bool *did_create_ptr) override;
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bool GetSupportedArchitectureAtIndex(uint32_t idx,
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lldb_private::ArchSpec &arch) override;
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void GetStatus(lldb_private::Stream &strm) override;
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bool CanDebugProcess() override;
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Environment GetEnvironment() override;
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// FIXME not sure what the _sigtramp equivalent would be on this platform
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void CalculateTrapHandlerSymbolNames() override {}
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ConstString GetFullNameForDylib(ConstString basename) override;
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protected:
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lldb::PlatformSP m_remote_platform_sp;
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private:
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DISALLOW_COPY_AND_ASSIGN(PlatformWindows);
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};
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} // namespace lldb_private
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#endif // liblldb_PlatformWindows_h_
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