| //===-- HostInfoBase.cpp ----------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "lldb/Host/Config.h" |
| |
| #include "lldb/Host/FileSystem.h" |
| #include "lldb/Host/Host.h" |
| #include "lldb/Host/HostInfo.h" |
| #include "lldb/Host/HostInfoBase.h" |
| #include "lldb/Utility/ArchSpec.h" |
| #include "lldb/Utility/Log.h" |
| #include "lldb/Utility/StreamString.h" |
| |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/ADT/Triple.h" |
| #include "llvm/Support/Host.h" |
| #include "llvm/Support/Path.h" |
| #include "llvm/Support/ScopedPrinter.h" |
| #include "llvm/Support/Threading.h" |
| #include "llvm/Support/raw_ostream.h" |
| |
| #include <mutex> |
| #include <thread> |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| namespace { |
| //---------------------------------------------------------------------- |
| // The HostInfoBaseFields is a work around for windows not supporting static |
| // variables correctly in a thread safe way. Really each of the variables in |
| // HostInfoBaseFields should live in the functions in which they are used and |
| // each one should be static, but the work around is in place to avoid this |
| // restriction. Ick. |
| //---------------------------------------------------------------------- |
| |
| struct HostInfoBaseFields { |
| ~HostInfoBaseFields() { |
| if (m_lldb_process_tmp_dir.Exists()) { |
| // Remove the LLDB temporary directory if we have one. Set "recurse" to |
| // true to all files that were created for the LLDB process can be |
| // cleaned up. |
| llvm::sys::fs::remove_directories(m_lldb_process_tmp_dir.GetPath()); |
| } |
| } |
| |
| std::string m_host_triple; |
| |
| ArchSpec m_host_arch_32; |
| ArchSpec m_host_arch_64; |
| |
| FileSpec m_lldb_so_dir; |
| FileSpec m_lldb_support_exe_dir; |
| FileSpec m_lldb_headers_dir; |
| FileSpec m_lldb_clang_resource_dir; |
| FileSpec m_lldb_system_plugin_dir; |
| FileSpec m_lldb_user_plugin_dir; |
| FileSpec m_lldb_process_tmp_dir; |
| FileSpec m_lldb_global_tmp_dir; |
| }; |
| |
| HostInfoBaseFields *g_fields = nullptr; |
| } |
| |
| void HostInfoBase::Initialize() { g_fields = new HostInfoBaseFields(); } |
| |
| void HostInfoBase::Terminate() { |
| delete g_fields; |
| g_fields = nullptr; |
| } |
| |
| llvm::StringRef HostInfoBase::GetTargetTriple() { |
| static llvm::once_flag g_once_flag; |
| llvm::call_once(g_once_flag, []() { |
| g_fields->m_host_triple = |
| HostInfo::GetArchitecture().GetTriple().getTriple(); |
| }); |
| return g_fields->m_host_triple; |
| } |
| |
| const ArchSpec &HostInfoBase::GetArchitecture(ArchitectureKind arch_kind) { |
| static llvm::once_flag g_once_flag; |
| llvm::call_once(g_once_flag, []() { |
| HostInfo::ComputeHostArchitectureSupport(g_fields->m_host_arch_32, |
| g_fields->m_host_arch_64); |
| }); |
| |
| // If an explicit 32 or 64-bit architecture was requested, return that. |
| if (arch_kind == eArchKind32) |
| return g_fields->m_host_arch_32; |
| if (arch_kind == eArchKind64) |
| return g_fields->m_host_arch_64; |
| |
| // Otherwise prefer the 64-bit architecture if it is valid. |
| return (g_fields->m_host_arch_64.IsValid()) ? g_fields->m_host_arch_64 |
| : g_fields->m_host_arch_32; |
| } |
| |
| llvm::Optional<HostInfoBase::ArchitectureKind> HostInfoBase::ParseArchitectureKind(llvm::StringRef kind) { |
| return llvm::StringSwitch<llvm::Optional<ArchitectureKind>>(kind) |
| .Case(LLDB_ARCH_DEFAULT, eArchKindDefault) |
| .Case(LLDB_ARCH_DEFAULT_32BIT, eArchKind32) |
| .Case(LLDB_ARCH_DEFAULT_64BIT, eArchKind64) |
| .Default(llvm::None); |
| } |
| |
| FileSpec HostInfoBase::GetShlibDir() { |
| static llvm::once_flag g_once_flag; |
| static bool success = false; |
| llvm::call_once(g_once_flag, []() { |
| success = HostInfo::ComputeSharedLibraryDirectory(g_fields->m_lldb_so_dir); |
| Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST); |
| LLDB_LOG(log, "shlib dir -> `{0}`", g_fields->m_lldb_so_dir); |
| }); |
| return success ? g_fields->m_lldb_so_dir : FileSpec(); |
| } |
| |
| FileSpec HostInfoBase::GetSupportExeDir() { |
| static llvm::once_flag g_once_flag; |
| static bool success = false; |
| llvm::call_once(g_once_flag, []() { |
| success = |
| HostInfo::ComputeSupportExeDirectory(g_fields->m_lldb_support_exe_dir); |
| Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST); |
| LLDB_LOG(log, "support exe dir -> `{0}`", g_fields->m_lldb_support_exe_dir); |
| }); |
| return success ? g_fields->m_lldb_support_exe_dir : FileSpec(); |
| } |
| |
| FileSpec HostInfoBase::GetHeaderDir() { |
| static llvm::once_flag g_once_flag; |
| static bool success = false; |
| llvm::call_once(g_once_flag, []() { |
| success = HostInfo::ComputeHeaderDirectory(g_fields->m_lldb_headers_dir); |
| Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST); |
| LLDB_LOG(log, "header dir -> `{0}`", g_fields->m_lldb_headers_dir); |
| }); |
| return success ? g_fields->m_lldb_headers_dir : FileSpec(); |
| } |
| |
| FileSpec HostInfoBase::GetSystemPluginDir() { |
| static llvm::once_flag g_once_flag; |
| static bool success = false; |
| llvm::call_once(g_once_flag, []() { |
| success = HostInfo::ComputeSystemPluginsDirectory( |
| g_fields->m_lldb_system_plugin_dir); |
| Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST); |
| LLDB_LOG(log, "system plugin dir -> `{0}`", |
| g_fields->m_lldb_system_plugin_dir); |
| }); |
| return success ? g_fields->m_lldb_system_plugin_dir : FileSpec(); |
| } |
| |
| FileSpec HostInfoBase::GetUserPluginDir() { |
| static llvm::once_flag g_once_flag; |
| static bool success = false; |
| llvm::call_once(g_once_flag, []() { |
| success = |
| HostInfo::ComputeUserPluginsDirectory(g_fields->m_lldb_user_plugin_dir); |
| Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST); |
| LLDB_LOG(log, "user plugin dir -> `{0}`", g_fields->m_lldb_user_plugin_dir); |
| }); |
| return success ? g_fields->m_lldb_user_plugin_dir : FileSpec(); |
| } |
| |
| FileSpec HostInfoBase::GetProcessTempDir() { |
| static llvm::once_flag g_once_flag; |
| static bool success = false; |
| llvm::call_once(g_once_flag, []() { |
| success = HostInfo::ComputeProcessTempFileDirectory( |
| g_fields->m_lldb_process_tmp_dir); |
| Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST); |
| LLDB_LOG(log, "process temp dir -> `{0}`", |
| g_fields->m_lldb_process_tmp_dir); |
| }); |
| return success ? g_fields->m_lldb_process_tmp_dir : FileSpec(); |
| } |
| |
| FileSpec HostInfoBase::GetGlobalTempDir() { |
| static llvm::once_flag g_once_flag; |
| static bool success = false; |
| llvm::call_once(g_once_flag, []() { |
| success = HostInfo::ComputeGlobalTempFileDirectory( |
| g_fields->m_lldb_global_tmp_dir); |
| Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST); |
| LLDB_LOG(log, "global temp dir -> `{0}`", g_fields->m_lldb_global_tmp_dir); |
| }); |
| return success ? g_fields->m_lldb_global_tmp_dir : FileSpec(); |
| } |
| |
| ArchSpec HostInfoBase::GetAugmentedArchSpec(llvm::StringRef triple) { |
| if (triple.empty()) |
| return ArchSpec(); |
| llvm::Triple normalized_triple(llvm::Triple::normalize(triple)); |
| if (!ArchSpec::ContainsOnlyArch(normalized_triple)) |
| return ArchSpec(triple); |
| |
| if (auto kind = HostInfo::ParseArchitectureKind(triple)) |
| return HostInfo::GetArchitecture(*kind); |
| |
| llvm::Triple host_triple(llvm::sys::getDefaultTargetTriple()); |
| |
| if (normalized_triple.getVendorName().empty()) |
| normalized_triple.setVendor(host_triple.getVendor()); |
| if (normalized_triple.getOSName().empty()) |
| normalized_triple.setOS(host_triple.getOS()); |
| if (normalized_triple.getEnvironmentName().empty()) |
| normalized_triple.setEnvironment(host_triple.getEnvironment()); |
| return ArchSpec(normalized_triple); |
| } |
| |
| bool HostInfoBase::ComputeSharedLibraryDirectory(FileSpec &file_spec) { |
| // To get paths related to LLDB we get the path to the executable that |
| // contains this function. On MacOSX this will be "LLDB.framework/.../LLDB". |
| // On other posix systems, we will get .../lib(64|32)?/liblldb.so. |
| |
| FileSpec lldb_file_spec(Host::GetModuleFileSpecForHostAddress( |
| reinterpret_cast<void *>(reinterpret_cast<intptr_t>( |
| HostInfoBase::ComputeSharedLibraryDirectory)))); |
| |
| // This is necessary because when running the testsuite the shlib might be a |
| // symbolic link inside the Python resource dir. |
| FileSystem::ResolveSymbolicLink(lldb_file_spec, lldb_file_spec); |
| |
| // Remove the filename so that this FileSpec only represents the directory. |
| file_spec.GetDirectory() = lldb_file_spec.GetDirectory(); |
| |
| return (bool)file_spec.GetDirectory(); |
| } |
| |
| bool HostInfoBase::ComputeSupportExeDirectory(FileSpec &file_spec) { |
| file_spec = GetShlibDir(); |
| return bool(file_spec); |
| } |
| |
| bool HostInfoBase::ComputeProcessTempFileDirectory(FileSpec &file_spec) { |
| FileSpec temp_file_spec; |
| if (!HostInfo::ComputeGlobalTempFileDirectory(temp_file_spec)) |
| return false; |
| |
| std::string pid_str{llvm::to_string(Host::GetCurrentProcessID())}; |
| temp_file_spec.AppendPathComponent(pid_str); |
| if (llvm::sys::fs::create_directory(temp_file_spec.GetPath())) |
| return false; |
| |
| file_spec.GetDirectory().SetCString(temp_file_spec.GetCString()); |
| return true; |
| } |
| |
| bool HostInfoBase::ComputeTempFileBaseDirectory(FileSpec &file_spec) { |
| llvm::SmallVector<char, 16> tmpdir; |
| llvm::sys::path::system_temp_directory(/*ErasedOnReboot*/ true, tmpdir); |
| file_spec = FileSpec(std::string(tmpdir.data(), tmpdir.size()), true); |
| return true; |
| } |
| |
| bool HostInfoBase::ComputeGlobalTempFileDirectory(FileSpec &file_spec) { |
| file_spec.Clear(); |
| |
| FileSpec temp_file_spec; |
| if (!HostInfo::ComputeTempFileBaseDirectory(temp_file_spec)) |
| return false; |
| |
| temp_file_spec.AppendPathComponent("lldb"); |
| if (llvm::sys::fs::create_directory(temp_file_spec.GetPath())) |
| return false; |
| |
| file_spec.GetDirectory().SetCString(temp_file_spec.GetCString()); |
| return true; |
| } |
| |
| bool HostInfoBase::ComputeHeaderDirectory(FileSpec &file_spec) { |
| // TODO(zturner): Figure out how to compute the header directory for all |
| // platforms. |
| return false; |
| } |
| |
| bool HostInfoBase::ComputeSystemPluginsDirectory(FileSpec &file_spec) { |
| // TODO(zturner): Figure out how to compute the system plugins directory for |
| // all platforms. |
| return false; |
| } |
| |
| bool HostInfoBase::ComputeUserPluginsDirectory(FileSpec &file_spec) { |
| // TODO(zturner): Figure out how to compute the user plugins directory for |
| // all platforms. |
| return false; |
| } |
| |
| void HostInfoBase::ComputeHostArchitectureSupport(ArchSpec &arch_32, |
| ArchSpec &arch_64) { |
| llvm::Triple triple(llvm::sys::getProcessTriple()); |
| |
| arch_32.Clear(); |
| arch_64.Clear(); |
| |
| switch (triple.getArch()) { |
| default: |
| arch_32.SetTriple(triple); |
| break; |
| |
| case llvm::Triple::aarch64: |
| case llvm::Triple::ppc64: |
| case llvm::Triple::ppc64le: |
| case llvm::Triple::x86_64: |
| arch_64.SetTriple(triple); |
| arch_32.SetTriple(triple.get32BitArchVariant()); |
| break; |
| |
| case llvm::Triple::mips64: |
| case llvm::Triple::mips64el: |
| case llvm::Triple::sparcv9: |
| case llvm::Triple::systemz: |
| arch_64.SetTriple(triple); |
| break; |
| } |
| } |