Rework LLDB system initialization.

In an effort to reduce binary size for components not wishing to
link against all of LLDB, as well as a parallel effort to reduce
link dependencies on Python, this patch splits out the notion of
LLDB initialization into "full" and "common" initialization.

All code related to initializing the full LLDB suite lives directly
in API now.  Previously it was only referenced from API, but because
it was defined in lldbCore, it would get implicitly linked against
by everything including lldb-server, causing a considerable
increase in binary size.

By moving this to the API layer, it also creates a better layering
for the ongoing effort to make the embedded interpreter replacable
with one from a different language (or even be completely removeable).

One semantic change necessary to get this all working was to remove
the notion of a shared debugger refcount.  The debugger is either
initialized or uninitialized now, and calling Initialize() multiple
times will simply have no effect, while the first Terminate() will
now shut it down no matter how many times Initialize() was called.
This behaves nicely with all of our supported usage patterns though,
and allows us to fix a number of nasty hacks from before.

Differential Revision: http://reviews.llvm.org/D8462

llvm-svn: 233758

1 files changed, 0 insertions, 400 deletions

diff --git a/lldb/source/Initialization/InitializeLLDB.cpp b/lldb/source/Initialization/InitializeLLDB.cpp
deleted file mode 100644
index 1e10842afd2..00000000000
--- a/lldb/source/Initialization/InitializeLLDB.cpp
+++ /dev/null
@@ -1,400 +0,0 @@
-//===-- InitializeLLDB.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/Core/Debugger.h"
-#include "lldb/Core/Log.h"
-#include "lldb/Core/Timer.h"
-#include "lldb/Host/Host.h"
-#include "lldb/Host/HostInfo.h"
-#include "lldb/Host/Mutex.h"
-#include "lldb/Initialization/InitializeLLDB.h"
-#include "lldb/Interpreter/ScriptInterpreterPython.h"
-
-#include "Plugins/ABI/MacOSX-i386/ABIMacOSX_i386.h"
-#include "Plugins/ABI/MacOSX-arm/ABIMacOSX_arm.h"
-#include "Plugins/ABI/MacOSX-arm64/ABIMacOSX_arm64.h"
-#include "Plugins/ABI/SysV-x86_64/ABISysV_x86_64.h"
-#include "Plugins/ABI/SysV-ppc/ABISysV_ppc.h"
-#include "Plugins/ABI/SysV-ppc64/ABISysV_ppc64.h"
-#include "Plugins/Disassembler/llvm/DisassemblerLLVMC.h"
-#include "Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.h"
-#include "Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.h"
-#include "Plugins/DynamicLoader/Static/DynamicLoaderStatic.h"
-#include "Plugins/Instruction/ARM/EmulateInstructionARM.h"
-#include "Plugins/Instruction/ARM64/EmulateInstructionARM64.h"
-#include "Plugins/Instruction/MIPS64/EmulateInstructionMIPS64.h"
-#include "Plugins/InstrumentationRuntime/AddressSanitizer/AddressSanitizerRuntime.h"
-#include "Plugins/JITLoader/GDB/JITLoaderGDB.h"
-#include "Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.h"
-#include "Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV1.h"
-#include "Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h"
-#include "Plugins/MemoryHistory/asan/MemoryHistoryASan.h"
-#include "Plugins/ObjectContainer/BSD-Archive/ObjectContainerBSDArchive.h"
-#include "Plugins/ObjectContainer/Universal-Mach-O/ObjectContainerUniversalMachO.h"
-#include "Plugins/ObjectFile/ELF/ObjectFileELF.h"
-#include "Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.h"
-#include "Plugins/OperatingSystem/Python/OperatingSystemPython.h"
-#include "Plugins/Platform/Android/PlatformAndroid.h"
-#include "Plugins/Platform/FreeBSD/PlatformFreeBSD.h"
-#include "Plugins/Platform/gdb-server/PlatformRemoteGDBServer.h"
-#include "Plugins/Platform/Kalimba/PlatformKalimba.h"
-#include "Plugins/Platform/Linux/PlatformLinux.h"
-#include "Plugins/Platform/MacOSX/PlatformiOSSimulator.h"
-#include "Plugins/Platform/MacOSX/PlatformMacOSX.h"
-#include "Plugins/Platform/MacOSX/PlatformRemoteiOS.h"
-#include "Plugins/Platform/Windows/PlatformWindows.h"
-#include "Plugins/Process/elf-core/ProcessElfCore.h"
-#include "Plugins/Process/gdb-remote/ProcessGDBRemote.h"
-#include "Plugins/Process/gdb-remote/ProcessGDBRemoteLog.h"
-#include "Plugins/SymbolFile/DWARF/SymbolFileDWARF.h"
-#include "Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h"
-#include "Plugins/SymbolFile/Symtab/SymbolFileSymtab.h"
-#include "Plugins/SymbolVendor/ELF/SymbolVendorELF.h"
-#include "Plugins/SystemRuntime/MacOSX/SystemRuntimeMacOSX.h"
-#include "Plugins/UnwindAssembly/x86/UnwindAssembly-x86.h"
-#include "Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.h"
-
-#if defined(__APPLE__)
-#include "Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.h"
-#include "Plugins/ObjectFile/Mach-O/ObjectFileMachO.h"
-#include "Plugins/Platform/MacOSX/PlatformDarwinKernel.h"
-#include "Plugins/Process/mach-core/ProcessMachCore.h"
-#include "Plugins/Process/MacOSX-Kernel/ProcessKDP.h"
-#include "Plugins/SymbolVendor/MacOSX/SymbolVendorMacOSX.h"
-#endif
-
-#if defined(__FreeBSD__)
-#include "Plugins/Process/FreeBSD/ProcessFreeBSD.h"
-#endif
-
-#if defined(__linux__)
-#include "Plugins/Process/Linux/ProcessLinux.h"
-#include "Plugins/Process/POSIX/ProcessPOSIXLog.h"
-#endif
-
-#if defined(_MSC_VER)
-#include "lldb/Host/windows/windows.h"
-#include "Plugins/Process/Windows/DynamicLoaderWindows.h"
-#include "Plugins/Process/Windows/ProcessWindows.h"
-#endif
-
-#include "llvm/Support/TargetSelect.h"
-
-#include <string>
-
-using namespace lldb_private;
-
-static void
-fatal_error_handler(void *user_data, const std::string &reason, bool gen_crash_diag)
-{
-    Host::SetCrashDescription(reason.c_str());
-    ::abort();
-}
-
-static bool g_inited_for_llgs = false;
-static void
-InitializeForLLGSPrivate()
-{
-    if (g_inited_for_llgs)
-        return;
-    g_inited_for_llgs = true;
-
-#if defined(_MSC_VER)
-    const char *disable_crash_dialog_var = getenv("LLDB_DISABLE_CRASH_DIALOG");
-    if (disable_crash_dialog_var && llvm::StringRef(disable_crash_dialog_var).equals_lower("true"))
-    {
-        // This will prevent Windows from displaying a dialog box requiring user interaction when
-        // LLDB crashes.  This is mostly useful when automating LLDB, for example via the test
-        // suite, so that a crash in LLDB does not prevent completion of the test suite.
-        ::SetErrorMode(GetErrorMode() | SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX);
-
-        _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
-        _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
-        _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
-        _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
-        _CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
-        _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
-    }
-#endif
-
-    Log::Initialize();
-    HostInfo::Initialize();
-    Timer::Initialize();
-    Timer scoped_timer(__PRETTY_FUNCTION__, __PRETTY_FUNCTION__);
-
-    llvm::install_fatal_error_handler(fatal_error_handler, 0);
-
-    process_gdb_remote::ProcessGDBRemoteLog::Initialize();
-
-    // Initialize plug-ins
-    ObjectContainerBSDArchive::Initialize();
-    ObjectFileELF::Initialize();
-    ObjectFilePECOFF::Initialize();
-    DynamicLoaderPOSIXDYLD::Initialize();
-    PlatformFreeBSD::Initialize();
-    platform_linux::PlatformLinux::Initialize();
-    PlatformWindows::Initialize();
-    PlatformKalimba::Initialize();
-    platform_android::PlatformAndroid::Initialize();
-
-    //----------------------------------------------------------------------
-    // Apple/Darwin hosted plugins
-    //----------------------------------------------------------------------
-    DynamicLoaderMacOSXDYLD::Initialize();
-    ObjectContainerUniversalMachO::Initialize();
-
-    PlatformRemoteiOS::Initialize();
-    PlatformMacOSX::Initialize();
-    PlatformiOSSimulator::Initialize();
-
-#if defined(__APPLE__)
-    DynamicLoaderDarwinKernel::Initialize();
-    PlatformDarwinKernel::Initialize();
-    ObjectFileMachO::Initialize();
-#endif
-#if defined(__linux__)
-    static ConstString g_linux_log_name("linux");
-    ProcessPOSIXLog::Initialize(g_linux_log_name);
-#endif
-#ifndef LLDB_DISABLE_PYTHON
-    ScriptInterpreterPython::InitializePrivate();
-    OperatingSystemPython::Initialize();
-#endif
-}
-
-static bool g_inited = false;
-static void
-InitializePrivate()
-{
-    if (g_inited)
-        return;
-    g_inited = true;
-
-    InitializeForLLGSPrivate();
-
-    // Initialize LLVM and Clang
-    llvm::InitializeAllTargets();
-    llvm::InitializeAllAsmPrinters();
-    llvm::InitializeAllTargetMCs();
-    llvm::InitializeAllDisassemblers();
-
-    ABIMacOSX_i386::Initialize();
-    ABIMacOSX_arm::Initialize();
-    ABIMacOSX_arm64::Initialize();
-    ABISysV_x86_64::Initialize();
-    ABISysV_ppc::Initialize();
-    ABISysV_ppc64::Initialize();
-    DisassemblerLLVMC::Initialize();
-
-    JITLoaderGDB::Initialize();
-    ProcessElfCore::Initialize();
-    MemoryHistoryASan::Initialize();
-    AddressSanitizerRuntime::Initialize();
-
-    SymbolVendorELF::Initialize();
-    SymbolFileDWARF::Initialize();
-    SymbolFileSymtab::Initialize();
-    UnwindAssemblyInstEmulation::Initialize();
-    UnwindAssembly_x86::Initialize();
-    EmulateInstructionARM::Initialize();
-    EmulateInstructionARM64::Initialize();
-    EmulateInstructionMIPS64::Initialize();
-    SymbolFileDWARFDebugMap::Initialize();
-    ItaniumABILanguageRuntime::Initialize();
-    AppleObjCRuntimeV2::Initialize();
-    AppleObjCRuntimeV1::Initialize();
-    SystemRuntimeMacOSX::Initialize();
-
-#if defined(__linux__)
-    //----------------------------------------------------------------------
-    // Linux hosted plugins
-    //----------------------------------------------------------------------
-    process_linux::ProcessLinux::Initialize();
-#endif
-#if defined(_MSC_VER)
-    DynamicLoaderWindows::Initialize();
-    ProcessWindows::Initialize();
-#endif
-#if defined(__FreeBSD__)
-    ProcessFreeBSD::Initialize();
-#endif
-#if defined(__APPLE__)
-    SymbolVendorMacOSX::Initialize();
-    ProcessKDP::Initialize();
-    ProcessMachCore::Initialize();
-#endif
-    //----------------------------------------------------------------------
-    // Platform agnostic plugins
-    //----------------------------------------------------------------------
-    platform_gdb_server::PlatformRemoteGDBServer::Initialize();
-
-    process_gdb_remote::ProcessGDBRemote::Initialize();
-    DynamicLoaderStatic::Initialize();
-
-    // Scan for any system or user LLDB plug-ins
-    PluginManager::Initialize();
-
-    // The process settings need to know about installed plug-ins, so the Settings must be initialized
-    // AFTER PluginManager::Initialize is called.
-
-    Debugger::SettingsInitialize();
-}
-
-static void
-TerminateForLLGSPrivate()
-{
-    if (!g_inited_for_llgs)
-        return;
-    g_inited_for_llgs = false;
-
-    Timer scoped_timer(__PRETTY_FUNCTION__, __PRETTY_FUNCTION__);
-    ObjectContainerBSDArchive::Terminate();
-    ObjectFileELF::Terminate();
-    ObjectFilePECOFF::Terminate();
-    DynamicLoaderPOSIXDYLD::Terminate();
-    PlatformFreeBSD::Terminate();
-    platform_linux::PlatformLinux::Terminate();
-    PlatformWindows::Terminate();
-    PlatformKalimba::Terminate();
-    platform_android::PlatformAndroid::Terminate();
-    DynamicLoaderMacOSXDYLD::Terminate();
-    ObjectContainerUniversalMachO::Terminate();
-    PlatformMacOSX::Terminate();
-    PlatformRemoteiOS::Terminate();
-    PlatformiOSSimulator::Terminate();
-
-#if defined(__APPLE__)
-    DynamicLoaderDarwinKernel::Terminate();
-    ObjectFileMachO::Terminate();
-    PlatformDarwinKernel::Terminate();
-#endif
-
-#ifndef LLDB_DISABLE_PYTHON
-    OperatingSystemPython::Terminate();
-#endif
-
-    Log::Terminate();
-}
-
-static void
-TerminatePrivate()
-{
-
-    if (!g_inited)
-        return;
-    g_inited = false;
-
-    Timer scoped_timer(__PRETTY_FUNCTION__, __PRETTY_FUNCTION__);
-    // Terminate and unload and loaded system or user LLDB plug-ins
-    PluginManager::Terminate();
-    ABIMacOSX_i386::Terminate();
-    ABIMacOSX_arm::Terminate();
-    ABIMacOSX_arm64::Terminate();
-    ABISysV_x86_64::Terminate();
-    ABISysV_ppc::Terminate();
-    ABISysV_ppc64::Terminate();
-    DisassemblerLLVMC::Terminate();
-
-    JITLoaderGDB::Terminate();
-    ProcessElfCore::Terminate();
-    MemoryHistoryASan::Terminate();
-    AddressSanitizerRuntime::Terminate();
-    SymbolVendorELF::Terminate();
-    SymbolFileDWARF::Terminate();
-    SymbolFileSymtab::Terminate();
-    UnwindAssembly_x86::Terminate();
-    UnwindAssemblyInstEmulation::Terminate();
-    EmulateInstructionARM::Terminate();
-    EmulateInstructionARM64::Terminate();
-    EmulateInstructionMIPS64::Terminate();
-    SymbolFileDWARFDebugMap::Terminate();
-    ItaniumABILanguageRuntime::Terminate();
-    AppleObjCRuntimeV2::Terminate();
-    AppleObjCRuntimeV1::Terminate();
-    SystemRuntimeMacOSX::Terminate();
-
-#if defined(__APPLE__)
-    ProcessMachCore::Terminate();
-    ProcessKDP::Terminate();
-    SymbolVendorMacOSX::Terminate();
-#endif
-#if defined(_MSC_VER)
-    DynamicLoaderWindows::Terminate();
-#endif
-
-#if defined(__linux__)
-    process_linux::ProcessLinux::Terminate();
-#endif
-
-#if defined(__FreeBSD__)
-    ProcessFreeBSD::Terminate();
-#endif
-    Debugger::SettingsTerminate();
-
-    platform_gdb_server::PlatformRemoteGDBServer::Terminate();
-    process_gdb_remote::ProcessGDBRemote::Terminate();
-    DynamicLoaderStatic::Terminate();
-
-    TerminateForLLGSPrivate();
-}
-
-void
-lldb_private::InitializeForLLGS(LoadPluginCallbackType load_plugin_callback)
-{
-    // Make sure we initialize only once
-    static Mutex g_inited_mutex(Mutex::eMutexTypeRecursive);
-    Mutex::Locker locker(g_inited_mutex);
-
-    // Call the actual initializers.  If we've already been initialized this
-    // will do nothing.
-    InitializeForLLGSPrivate();
-
-    // We want to call Debuger::Initialize every time, even if we've already
-    // been initialized, so that the debugger ref count increases.
-    Debugger::Initialize(load_plugin_callback);
-}
-
-void
-lldb_private::Initialize(LoadPluginCallbackType load_plugin_callback)
-{
-    // Make sure we initialize only once
-    static Mutex g_inited_mutex(Mutex::eMutexTypeRecursive);
-    Mutex::Locker locker(g_inited_mutex);
-
-    // Call the actual initializers.  If we've already been initialized this
-    // will do nothing.
-    InitializeForLLGSPrivate();
-    InitializePrivate();
-
-    // We want to call Debuger::Initialize every time, even if we've already
-    // been initialized, so that the debugger ref count increases.
-    Debugger::Initialize(load_plugin_callback);
-}
-
-void
-lldb_private::TerminateLLGS()
-{
-    // Terminate the debugger.  If the ref count is still greater than 0, we
-    // shouldn't shutdown yet.
-    if (Debugger::Terminate() > 0)
-        return;
-
-    TerminateForLLGSPrivate();
-}
-
-void
-lldb_private::Terminate()
-{
-    // Terminate the debugger.  If the ref count is still greater than 0, we
-    // shouldn't shutdown yet.
-    if (Debugger::Terminate() > 0)
-        return;
-
-    TerminatePrivate();
-}