1 //===-- IOChannel.h ---------------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef lldb_IOChannel_h_ 11 #define lldb_IOChannel_h_ 12 13 #include <string> 14 #include <queue> 15 16 #if defined(__FreeBSD__) 17 #include <readline/readline.h> 18 #else 19 #include <editline/readline.h> 20 #endif 21 #include <histedit.h> 22 #include <pthread.h> 23 #include <sys/time.h> 24 25 #include "Driver.h" 26 27 class IOChannel : public lldb::SBBroadcaster 28 { 29 public: 30 enum { 31 eBroadcastBitHasUserInput = (1 << 0), 32 eBroadcastBitUserInterrupt = (1 << 1), 33 eBroadcastBitThreadShouldExit = (1 << 2), 34 eBroadcastBitThreadDidExit = (1 << 3), 35 eBroadcastBitThreadDidStart = (1 << 4), 36 eBroadcastBitsSTDOUT = (1 << 5), 37 eBroadcastBitsSTDERR = (1 << 6), 38 eBroadcastBitsSTDIN = (1 << 7), 39 eAllEventBits = 0xffffffff 40 }; 41 42 enum LibeditGetInputResult 43 { 44 eLibeditGetInputEOF = 0, 45 eLibeditGetInputValid = 1, 46 eLibeditGetInputEmpty = 2, 47 eLibeditGetInputResultError = 4, 48 eLibeditGetInputResultUnknown = 0xffffffff 49 }; 50 51 IOChannel (FILE *editline_in, 52 FILE *editline_out, 53 FILE *out, 54 FILE *err, 55 Driver *driver = NULL); 56 57 virtual 58 ~IOChannel (); 59 60 bool 61 Start (); 62 63 bool 64 Stop (); 65 66 static void * 67 IOReadThread (void *); 68 69 void 70 Run (); 71 72 void 73 OutWrite (const char *buffer, size_t len, bool asynchronous); 74 75 void 76 ErrWrite (const char *buffer, size_t len, bool asynchronous); 77 78 LibeditGetInputResult 79 LibeditGetInput (std::string &); 80 81 static void 82 LibeditOutputBytesReceived (void *baton, const void *src,size_t src_len); 83 84 void 85 SetPrompt (); 86 87 void 88 RefreshPrompt (); 89 90 void 91 AddCommandToQueue (const char *command); 92 93 bool 94 GetCommandFromQueue (std::string &cmd); 95 96 int 97 CommandQueueSize () const; 98 99 void 100 ClearCommandQueue (); 101 102 bool 103 CommandQueueIsEmpty () const; 104 105 const char * 106 GetPrompt (); 107 108 bool 109 EditLineHasCharacters (); 110 111 void 112 EraseCharsBeforeCursor (); 113 114 static unsigned char 115 ElCompletionFn (EditLine *e, int ch); 116 117 void 118 ElResize(); 119 120 protected: 121 122 bool 123 IsGettingCommand () const; 124 125 void 126 SetGettingCommand (bool new_value); 127 128 private: 129 130 pthread_mutex_t m_output_mutex; 131 struct timeval m_enter_elgets_time; 132 133 Driver *m_driver; 134 lldb::thread_t m_read_thread; 135 bool m_read_thread_should_exit; 136 FILE *m_out_file; 137 FILE *m_err_file; 138 std::queue<std::string> m_command_queue; 139 const char *m_completion_key; 140 141 EditLine *m_edit_line; 142 History *m_history; 143 HistEvent m_history_event; 144 bool m_getting_command; 145 bool m_expecting_prompt; 146 std::string m_prompt_str; // for accumlating the prompt as it gets written out by editline 147 bool m_refresh_request_pending; 148 149 void 150 HistorySaveLoad (bool save); 151 152 unsigned char 153 HandleCompletion (EditLine *e, int ch); 154 }; 155 156 class IOLocker 157 { 158 public: 159 160 IOLocker (pthread_mutex_t &mutex); 161 162 ~IOLocker (); 163 164 protected: 165 166 pthread_mutex_t *m_mutex_ptr; 167 168 private: 169 170 IOLocker (const IOLocker&); 171 const IOLocker& operator= (const IOLocker&); 172 }; 173 174 #endif // lldb_IOChannel_h_ 175
