vendor/lldb/lldb-r201577

1 files changed, 0 insertions, 656 deletions

diff --git a/tools/driver/IOChannel.cpp b/tools/driver/IOChannel.cpp
deleted file mode 100644
index 7cba73aaae8c..000000000000
--- a/tools/driver/IOChannel.cpp
+++ /dev/null
@@ -1,656 +0,0 @@
-//===-- IOChannel.cpp -------------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "Platform.h"
-#include "IOChannel.h"
-
-#include <map>
-
-#include "lldb/API/SBCommandInterpreter.h"
-#include "lldb/API/SBDebugger.h"
-#include "lldb/API/SBError.h"
-#include "lldb/API/SBEvent.h"
-#include "lldb/API/SBFileSpec.h"
-#include "lldb/API/SBHostOS.h"
-#include "lldb/API/SBListener.h"
-#include "lldb/API/SBStringList.h"
-
-#include <string.h>
-#include <limits.h>
-
-using namespace lldb;
-
-typedef std::map<EditLine *, std::string> PromptMap;
-const char *g_default_prompt = "(lldb) ";
-PromptMap g_prompt_map;
-
-// Printing the following string causes libedit to back up to the beginning of the line & blank it out.
-const char undo_prompt_string[4] = { (char) 13, (char) 27, (char) 91, (char) 75};
-
-static const char*
-el_prompt(EditLine *el)
-{
-    PromptMap::const_iterator pos = g_prompt_map.find (el);
-    if (pos == g_prompt_map.end())
-        return g_default_prompt;
-    return pos->second.c_str();
-}
-
-const char *
-IOChannel::GetPrompt ()
-{
-    PromptMap::const_iterator pos = g_prompt_map.find (m_edit_line);
-    if (pos == g_prompt_map.end())
-        return g_default_prompt;
-    return pos->second.c_str();
-}
-
-bool
-IOChannel::EditLineHasCharacters ()
-{
-    const LineInfo *line_info  = el_line(m_edit_line);
-    if (line_info)
-    {
-        // Sometimes we get called after the user has submitted the line, but before editline has
-        // cleared the buffer.  In that case the cursor will be pointing at the newline.  That's
-        // equivalent to having no characters on the line, since it has already been submitted.
-        if (*line_info->cursor == '\n')
-            return false;
-        else
-            return line_info->cursor != line_info->buffer;
-    }
-    else
-        return false;
-}
-
-
-void
-IOChannel::EraseCharsBeforeCursor ()
-{
-    const LineInfo *line_info  = el_line(m_edit_line);
-    if (line_info != NULL)
-        el_deletestr(m_edit_line, line_info->cursor - line_info->buffer);
-}
-
-unsigned char
-IOChannel::ElCompletionFn (EditLine *e, int ch)
-{
-    IOChannel *io_channel;
-    if (el_get(e, EL_CLIENTDATA, &io_channel) == 0)
-    {
-        return io_channel->HandleCompletion (e, ch);
-    }
-    else
-    {
-        return CC_ERROR;
-    }
-}
-
-void
-IOChannel::ElResize()
-{
-    el_resize(m_edit_line);
-}
-
-unsigned char
-IOChannel::HandleCompletion (EditLine *e, int ch)
-{
-    assert (e == m_edit_line);
-
-    const LineInfo *line_info  = el_line(m_edit_line);
-    SBStringList completions;
-    int page_size = 40;
-
-    int num_completions = m_driver->GetDebugger().GetCommandInterpreter().HandleCompletion (line_info->buffer,
-                                                                                            line_info->cursor,
-                                                                                            line_info->lastchar,
-                                                                                            0,
-                                                                                            -1,
-                                                                                            completions);
-    
-    if (num_completions == -1)
-    {
-        el_insertstr (m_edit_line, m_completion_key);
-        return CC_REDISPLAY;
-    }
-    else if (num_completions == -2)
-    {
-        el_deletestr (m_edit_line, line_info->cursor - line_info->buffer);
-        el_insertstr (m_edit_line, completions.GetStringAtIndex(0));
-        return CC_REDISPLAY;
-    }
-
-    // If we get a longer match display that first.
-    const char *completion_str = completions.GetStringAtIndex(0);
-    if (completion_str != NULL && *completion_str != '\0')
-    {
-        el_insertstr (m_edit_line, completion_str);
-        return CC_REDISPLAY;
-    }
-
-    if (num_completions > 1)
-    {
-        const char *comment = "\nAvailable completions:";
-
-        int num_elements = num_completions + 1;
-        OutWrite(comment,  strlen (comment), NO_ASYNC);
-        if (num_completions < page_size)
-        {
-            for (int i = 1; i < num_elements; i++)
-            {
-                completion_str = completions.GetStringAtIndex(i);
-                OutWrite("\n\t", 2, NO_ASYNC);
-                OutWrite(completion_str, strlen (completion_str), NO_ASYNC);
-            }
-            OutWrite ("\n", 1, NO_ASYNC);
-        }
-        else
-        {
-            int cur_pos = 1;
-            char reply;
-            int got_char;
-            while (cur_pos < num_elements)
-            {
-                int endpoint = cur_pos + page_size;
-                if (endpoint > num_elements)
-                    endpoint = num_elements;
-                for (; cur_pos < endpoint; cur_pos++)
-                {
-                    completion_str = completions.GetStringAtIndex(cur_pos);
-                    OutWrite("\n\t", 2, NO_ASYNC);
-                    OutWrite(completion_str, strlen (completion_str), NO_ASYNC);
-                }
-
-                if (cur_pos >= num_elements)
-                {
-                    OutWrite("\n", 1, NO_ASYNC);
-                    break;
-                }
-
-                OutWrite("\nMore (Y/n/a): ", strlen ("\nMore (Y/n/a): "), NO_ASYNC);
-                reply = 'n';
-                got_char = el_getc(m_edit_line, &reply);
-                if (got_char == -1 || reply == 'n')
-                    break;
-                if (reply == 'a')
-                    page_size = num_elements - cur_pos;
-            }
-        }
-
-    }
-
-    if (num_completions == 0)
-        return CC_REFRESH_BEEP;
-    else
-        return CC_REDISPLAY;
-}
-
-IOChannel::IOChannel
-(
-    FILE *editline_in,
-    FILE *editline_out,
-    FILE *out,  
-    FILE *err,
-    Driver *driver
-) :
-    SBBroadcaster ("IOChannel"),
-    m_output_mutex (),
-    m_enter_elgets_time (),
-    m_driver (driver),
-    m_read_thread (LLDB_INVALID_HOST_THREAD),
-    m_read_thread_should_exit (false),
-    m_out_file (out),
-    m_err_file (err),
-    m_editline_out (editline_out),
-    m_command_queue (),
-    m_completion_key ("\t"),
-    m_edit_line (::el_init (SBHostOS::GetProgramFileSpec().GetFilename(), editline_in, editline_out,  editline_out)),
-    m_history (history_init()),
-    m_history_event(),
-    m_getting_command (false),
-    m_expecting_prompt (false),
-    m_prompt_str (),
-    m_refresh_request_pending (false)
-{
-    assert (m_edit_line);
-    el_set (m_edit_line, EL_PROMPT, el_prompt);
-    el_set (m_edit_line, EL_EDITOR, "emacs");
-    el_set (m_edit_line, EL_HIST, history, m_history);
-    el_set (m_edit_line, EL_ADDFN, "lldb_complete", "LLDB completion function", IOChannel::ElCompletionFn);
-    el_set (m_edit_line, EL_BIND, m_completion_key, "lldb_complete", NULL);
-    el_set (m_edit_line, EL_BIND, "^r", "em-inc-search-prev", NULL);  // Cycle through backwards search, entering string
-    el_set (m_edit_line, EL_BIND, "^w", "ed-delete-prev-word", NULL); // Delete previous word, behave like bash does.
-    el_set (m_edit_line, EL_BIND, "\033[3~", "ed-delete-next-char", NULL); // Fix the delete key.
-    el_set (m_edit_line, EL_CLIENTDATA, this);
-
-    // Source $PWD/.editrc then $HOME/.editrc
-    el_source (m_edit_line, NULL);
-
-    assert (m_history);
-    history (m_history, &m_history_event, H_SETSIZE, 800);
-    history (m_history, &m_history_event, H_SETUNIQUE, 1);
-    // Load history
-    HistorySaveLoad (false);
-
-    // Initialize time that ::el_gets was last called.
-    m_enter_elgets_time.tv_sec = 0;
-    m_enter_elgets_time.tv_usec = 0;
-
-    // set the initial state to non flushed
-    m_output_flushed = false;
-}
-
-IOChannel::~IOChannel ()
-{
-    // Save history
-    HistorySaveLoad (true);
-
-    if (m_history != NULL)
-    {
-        ::history_end (m_history);
-        m_history = NULL;
-    }
-
-    if (m_edit_line != NULL)
-    {
-        ::el_end (m_edit_line);
-        m_edit_line = NULL;
-    }
-}
-
-void
-IOChannel::HistorySaveLoad (bool save)
-{
-    if (m_history != NULL)
-    {
-        char history_path[PATH_MAX];
-        ::snprintf (history_path, sizeof(history_path), "~/.%s-history", SBHostOS::GetProgramFileSpec().GetFilename());
-        if ((size_t)SBFileSpec::ResolvePath (history_path, history_path, sizeof(history_path)) < sizeof(history_path) - 1)
-        {
-            const char *path_ptr = history_path;
-            if (save)
-                ::history (m_history, &m_history_event, H_SAVE, path_ptr);
-            else
-                ::history (m_history, &m_history_event, H_LOAD, path_ptr);
-        }
-    }
-}
-
-void
-IOChannel::LibeditOutputBytesReceived (void *baton, const void *src, size_t src_len)
-{
-    IOChannel *io_channel = (IOChannel *) baton;
-    std::lock_guard<std::recursive_mutex> locker(io_channel->m_output_mutex);
-    const char *bytes = (const char *) src;
-
-    bool flush = false;
-
-    // See if we have a 'flush' synchronization point in there.
-    // this is performed from 'fputc ('\0', m_editline_out);' in LibeditGetInput()
-    if (src_len > 0 && bytes[src_len-1] == '\0')
-    {
-        src_len--;
-        flush = true;
-    }
-
-    if (io_channel->IsGettingCommand() && io_channel->m_expecting_prompt)
-    {
-        io_channel->m_prompt_str.append (bytes, src_len);
-        // Log this to make sure the prompt is really what you think it is.
-        if (io_channel->m_prompt_str.find (el_prompt(io_channel->m_edit_line)) == 0)
-        {
-            io_channel->m_expecting_prompt = false;
-            io_channel->m_refresh_request_pending = false;
-            io_channel->OutWrite (io_channel->m_prompt_str.c_str(), 
-                                  io_channel->m_prompt_str.size(), NO_ASYNC);
-            io_channel->m_prompt_str.clear();
-        }
-    }
-    else
-    {
-        if (io_channel->m_prompt_str.size() > 0)
-            io_channel->m_prompt_str.clear();
-        std::string tmp_str (bytes, src_len);
-        if (tmp_str.find (el_prompt (io_channel->m_edit_line)) == 0)
-            io_channel->m_refresh_request_pending = false;
-        io_channel->OutWrite (bytes, src_len, NO_ASYNC);
-    }
-
-#if !defined (_MSC_VER)
-    if (flush)
-    {
-        io_channel->m_output_flushed = true;
-        io_channel->m_output_cond.notify_all();
-    }
-#endif
-
-}
-
-IOChannel::LibeditGetInputResult
-IOChannel::LibeditGetInput (std::string &new_line)
-{
-    IOChannel::LibeditGetInputResult retval = IOChannel::eLibeditGetInputResultUnknown;
-    if (m_edit_line != NULL)
-    {
-        int line_len = 0;
-
-        // Set boolean indicating whether or not el_gets is trying to get input (i.e. whether or not to attempt
-        // to refresh the prompt after writing data).
-        SetGettingCommand (true);
-        m_expecting_prompt = true;
-
-        // Call el_gets to prompt the user and read the user's input.
-        const char *line = ::el_gets (m_edit_line, &line_len);
-
-#if !defined (_MSC_VER)
-        // Force the piped output from el_gets to finish processing.
-        // el_gets does an fflush internally, which is not sufficient here; it only
-        // writes the data into m_editline_out, but doesn't affect whether our worker
-        // thread will read that data yet. So we block here manually.
-        {
-            std::lock_guard<std::recursive_mutex> locker(m_output_mutex);
-            m_output_flushed = false;
-
-            // Write a synchronization point into the stream, so we can guarantee
-            // LibeditOutputBytesReceived has processed everything up till that mark.
-            fputc ('\0', m_editline_out);
-
-            while (!m_output_flushed)
-            {
-                // wait until the condition variable is signaled
-                m_output_cond.wait(m_output_mutex);
-            }
-        }
-#endif
-
-        // Re-set the boolean indicating whether or not el_gets is trying to get input.
-        SetGettingCommand (false);
-
-        if (line)
-        {
-            retval = IOChannel::eLibeditGetInputValid;
-            // strip any newlines off the end of the string...
-            while (line_len > 0 && (line[line_len - 1] == '\n' || line[line_len - 1] == '\r'))
-                --line_len;
-            if (line_len > 0)
-            {
-                ::history (m_history, &m_history_event, H_ENTER, line);
-                new_line.assign (line, line_len);   // Omit the newline
-            }
-            else
-            {
-                retval = IOChannel::eLibeditGetInputEmpty;
-                // Someone just hit ENTER, return the empty string
-                new_line.clear();
-            }
-            // Return true to indicate success even if a string is empty
-            return retval;
-        }
-        else
-        {
-            retval = (line_len == 0 ? IOChannel::eLibeditGetInputEOF : IOChannel::eLibeditGetInputResultError);
-        }
-    }
-    // Return false to indicate failure. This can happen when the file handle
-    // is closed (EOF).
-    new_line.clear();
-    return retval;
-}
-
-thread_result_t
-IOChannel::IOReadThread (void *ptr)
-{
-    IOChannel *myself = static_cast<IOChannel *> (ptr);
-    myself->Run();
-    return NULL;
-}
-
-void
-IOChannel::Run ()
-{
-    SBListener listener("IOChannel::Run");
-    std::string new_line;
-
-    SBBroadcaster interpreter_broadcaster (m_driver->GetDebugger().GetCommandInterpreter().GetBroadcaster());
-    listener.StartListeningForEvents (interpreter_broadcaster,
-                                      SBCommandInterpreter::eBroadcastBitResetPrompt |
-                                      SBCommandInterpreter::eBroadcastBitThreadShouldExit |
-                                      SBCommandInterpreter::eBroadcastBitQuitCommandReceived);
-
-    listener.StartListeningForEvents (*this,
-                                      IOChannel::eBroadcastBitThreadShouldExit);
-
-    listener.StartListeningForEvents (*m_driver,
-                                      Driver::eBroadcastBitReadyForInput |
-                                      Driver::eBroadcastBitThreadShouldExit);
-
-    // Let anyone know that the IO channel is up and listening and ready for events
-    BroadcastEventByType (eBroadcastBitThreadDidStart);
-    bool done = false;
-    while (!done)
-    {
-        SBEvent event;
-
-        listener.WaitForEvent (UINT32_MAX, event);
-        if (!event.IsValid())
-            continue;
-
-        const uint32_t event_type = event.GetType();
-
-        if (event.GetBroadcaster().IsValid())
-        {
-            if (event.BroadcasterMatchesPtr (m_driver))
-            {
-                if (event_type & Driver::eBroadcastBitReadyForInput)
-                {
-                    std::string line;
-
-                    if (CommandQueueIsEmpty())
-                    {
-                        IOChannel::LibeditGetInputResult getline_result = LibeditGetInput(line);
-                        if (getline_result == IOChannel::eLibeditGetInputEOF)
-                        {
-                            // EOF occurred
-                            // pretend that a quit was typed so the user gets a potential
-                            // chance to confirm
-                            line.assign("quit");
-                        }
-                        else if (getline_result == IOChannel::eLibeditGetInputResultError || getline_result == IOChannel::eLibeditGetInputResultUnknown)
-                        {
-                            // some random error occurred, exit and don't ask because the state might be corrupt
-                            done = true;
-                            continue;
-                        }
-                    }
-                    else
-                    {
-                        GetCommandFromQueue (line);
-                    }
-
-                    // TO BE DONE: FIGURE OUT WHICH COMMANDS SHOULD NOT BE REPEATED IF USER PRESSES PLAIN 'RETURN'
-                    // AND TAKE CARE OF THAT HERE.
-
-                    SBEvent line_event(IOChannel::eBroadcastBitHasUserInput,
-                             line.c_str(),
-                             line.size());
-                    BroadcastEvent (line_event);
-                }
-                else if (event_type & Driver::eBroadcastBitThreadShouldExit)
-                {
-                    done = true;
-                    continue;
-                }
-            }
-            else if (event.BroadcasterMatchesRef (interpreter_broadcaster))
-            {
-                switch (event_type)
-                {
-                case SBCommandInterpreter::eBroadcastBitResetPrompt:
-                    {
-                        const char *new_prompt = SBEvent::GetCStringFromEvent (event);
-                        if (new_prompt)
-                            g_prompt_map[m_edit_line] = new_prompt;
-                    }
-                    break;
-
-                case SBCommandInterpreter::eBroadcastBitThreadShouldExit:
-                case SBCommandInterpreter::eBroadcastBitQuitCommandReceived:
-                    done = true;
-                    break;
-                }
-            }
-            else if (event.BroadcasterMatchesPtr (this))
-            {
-                if (event_type & IOChannel::eBroadcastBitThreadShouldExit)
-                {
-                    done = true;
-                    continue;
-                }
-            }
-        }
-    }
-    BroadcastEventByType (IOChannel::eBroadcastBitThreadDidExit);
-    m_driver = NULL;
-    m_read_thread = 0;
-}
-
-bool
-IOChannel::Start ()
-{
-    if (IS_VALID_LLDB_HOST_THREAD(m_read_thread))
-        return true;
-
-    m_read_thread = SBHostOS::ThreadCreate("<lldb.driver.commandline_io>", (lldb::thread_func_t) IOChannel::IOReadThread, this, NULL);
-
-    return (IS_VALID_LLDB_HOST_THREAD(m_read_thread));
-}
-
-bool
-IOChannel::Stop ()
-{
-    if (!IS_VALID_LLDB_HOST_THREAD(m_read_thread))
-        return true;
-
-    BroadcastEventByType (eBroadcastBitThreadShouldExit);
-
-    // Don't call Host::ThreadCancel since el_gets won't respond to this
-    // function call -- the thread will just die and all local variables in
-    // IOChannel::Run() won't get destructed down which is bad since there is
-    // a local listener holding onto broadcasters... To ensure proper shutdown,
-    // a ^D (control-D) sequence (0x04) should be written to other end of the
-    // the "in" file handle that was passed into the contructor as closing the
-    // file handle doesn't seem to make el_gets() exit....
-    return SBHostOS::ThreadJoin (m_read_thread, NULL, NULL);
-}
-
-void
-IOChannel::RefreshPrompt ()
-{
-    // If we are not in the middle of getting input from the user, there is no need to 
-    // refresh the prompt.
-    std::lock_guard<std::recursive_mutex> locker(m_output_mutex);
-    if (! IsGettingCommand())
-        return;
-
-    // If we haven't finished writing the prompt, there's no need to refresh it.
-    if (m_expecting_prompt)
-        return;
-
-    if (m_refresh_request_pending)
-        return;
-
-    ::el_set (m_edit_line, EL_REFRESH);
-    m_refresh_request_pending = true;    
-}
-
-void
-IOChannel::OutWrite (const char *buffer, size_t len, bool asynchronous)
-{
-    if (len == 0 || buffer == NULL)
-        return;
-
-    // We're in the process of exiting -- IOChannel::Run() has already completed
-    // and set m_driver to NULL - it is time for us to leave now.  We might not
-    // print the final ^D to stdout in this case.  We need to do some re-work on
-    // how the I/O streams are managed at some point.
-    if (m_driver == NULL)
-    {
-        return;
-    }
-
-    // Use the mutex to make sure OutWrite and ErrWrite do not interfere with each other's output.
-    std::lock_guard<std::recursive_mutex> locker(m_output_mutex);
-    if (m_driver->EditlineReaderIsTop() && asynchronous)
-        ::fwrite (undo_prompt_string, 1, 4, m_out_file);
-    ::fwrite (buffer, 1, len, m_out_file);
-    if (asynchronous)
-        m_driver->GetDebugger().NotifyTopInputReader (eInputReaderAsynchronousOutputWritten);
-}
-
-void
-IOChannel::ErrWrite (const char *buffer, size_t len, bool asynchronous)
-{
-    if (len == 0 || buffer == NULL)
-        return;
-
-    // Use the mutex to make sure OutWrite and ErrWrite do not interfere with each other's output.
-    std::lock_guard<std::recursive_mutex> locker(m_output_mutex);
-    if (asynchronous)
-        ::fwrite (undo_prompt_string, 1, 4, m_err_file);
-    ::fwrite (buffer, 1, len, m_err_file);
-    if (asynchronous)
-        m_driver->GetDebugger().NotifyTopInputReader (eInputReaderAsynchronousOutputWritten);
-}
-
-void
-IOChannel::AddCommandToQueue (const char *command)
-{
-    m_command_queue.push (std::string(command));
-}
-
-bool
-IOChannel::GetCommandFromQueue (std::string &cmd)
-{
-    if (m_command_queue.empty())
-        return false;
-    cmd.swap(m_command_queue.front());
-    m_command_queue.pop ();
-    return true;
-}
-
-int
-IOChannel::CommandQueueSize () const
-{
-    return m_command_queue.size();
-}
-
-void
-IOChannel::ClearCommandQueue ()
-{
-    while (!m_command_queue.empty())
-        m_command_queue.pop();
-}
-
-bool
-IOChannel::CommandQueueIsEmpty () const
-{
-    return m_command_queue.empty();
-}
-
-bool
-IOChannel::IsGettingCommand () const
-{
-    return m_getting_command;
-}
-
-void
-IOChannel::SetGettingCommand (bool new_value)
-{
-    m_getting_command = new_value;
-}