1 //===-- ProcessPOSIXLog.cpp ---------------------------------------*- 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 #include "ProcessPOSIXLog.h" 11 12 #include "lldb/Interpreter/Args.h" 13 #include "lldb/Core/StreamFile.h" 14 15 #include "ProcessPOSIX.h" 16 #include "ProcessPOSIXLog.h" 17 18 using namespace lldb; 19 using namespace lldb_private; 20 21 22 // We want to avoid global constructors where code needs to be run so here we 23 // control access to our static g_log_sp by hiding it in a singleton function 24 // that will construct the static g_log_sp the first time this function is 25 // called. 26 static bool g_log_enabled = false; 27 static Log * g_log = NULL; 28 static Log * 29 GetLog () 30 { 31 if (!g_log_enabled) 32 return NULL; 33 return g_log; 34 } 35 36 37 Log * 38 ProcessPOSIXLog::GetLogIfAllCategoriesSet (uint32_t mask) 39 { 40 Log *log(GetLog ()); 41 if (log && mask) 42 { 43 uint32_t log_mask = log->GetMask().Get(); 44 if ((log_mask & mask) != mask) 45 return NULL; 46 } 47 return log; 48 } 49 50 static uint32_t 51 GetFlagBits (const char *arg) 52 { 53 if (::strcasecmp (arg, "all") == 0 ) return POSIX_LOG_ALL; 54 else if (::strcasecmp (arg, "async") == 0 ) return POSIX_LOG_ASYNC; 55 else if (::strncasecmp (arg, "break", 5) == 0 ) return POSIX_LOG_BREAKPOINTS; 56 else if (::strncasecmp (arg, "comm", 4) == 0 ) return POSIX_LOG_COMM; 57 else if (::strcasecmp (arg, "default") == 0 ) return POSIX_LOG_DEFAULT; 58 else if (::strcasecmp (arg, "packets") == 0 ) return POSIX_LOG_PACKETS; 59 else if (::strcasecmp (arg, "memory") == 0 ) return POSIX_LOG_MEMORY; 60 else if (::strcasecmp (arg, "data-short") == 0 ) return POSIX_LOG_MEMORY_DATA_SHORT; 61 else if (::strcasecmp (arg, "data-long") == 0 ) return POSIX_LOG_MEMORY_DATA_LONG; 62 else if (::strcasecmp (arg, "process") == 0 ) return POSIX_LOG_PROCESS; 63 else if (::strcasecmp (arg, "ptrace") == 0 ) return POSIX_LOG_PTRACE; 64 else if (::strcasecmp (arg, "registers") == 0 ) return POSIX_LOG_REGISTERS; 65 else if (::strcasecmp (arg, "step") == 0 ) return POSIX_LOG_STEP; 66 else if (::strcasecmp (arg, "thread") == 0 ) return POSIX_LOG_THREAD; 67 else if (::strcasecmp (arg, "verbose") == 0 ) return POSIX_LOG_VERBOSE; 68 else if (::strncasecmp (arg, "watch", 5) == 0 ) return POSIX_LOG_WATCHPOINTS; 69 return 0; 70 } 71 72 void 73 ProcessPOSIXLog::DisableLog (const char **args, Stream *feedback_strm) 74 { 75 Log *log (GetLog ()); 76 if (log) 77 { 78 uint32_t flag_bits = 0; 79 80 flag_bits = log->GetMask().Get(); 81 for (; args[0]; args++) 82 { 83 const char *arg = args[0]; 84 uint32_t bits = GetFlagBits(arg); 85 86 if (bits) 87 { 88 flag_bits &= ~bits; 89 } 90 else 91 { 92 feedback_strm->Printf("error: unrecognized log category '%s'\n", arg); 93 ListLogCategories (feedback_strm); 94 } 95 } 96 97 log->GetMask().Reset (flag_bits); 98 if (flag_bits == 0) 99 g_log_enabled = false; 100 } 101 102 return; 103 } 104 105 Log * 106 ProcessPOSIXLog::EnableLog (StreamSP &log_stream_sp, uint32_t log_options, const char **args, Stream *feedback_strm) 107 { 108 // Try see if there already is a log - that way we can reuse its settings. 109 // We could reuse the log in toto, but we don't know that the stream is the same. 110 uint32_t flag_bits = 0; 111 if (g_log) 112 flag_bits = g_log->GetMask().Get(); 113 114 // Now make a new log with this stream if one was provided 115 if (log_stream_sp) 116 { 117 if (g_log) 118 g_log->SetStream(log_stream_sp); 119 else 120 g_log = new Log(log_stream_sp); 121 } 122 123 if (g_log) 124 { 125 bool got_unknown_category = false; 126 for (; args[0]; args++) 127 { 128 const char *arg = args[0]; 129 uint32_t bits = GetFlagBits(arg); 130 131 if (bits) 132 { 133 flag_bits |= bits; 134 } 135 else 136 { 137 feedback_strm->Printf("error: unrecognized log category '%s'\n", arg); 138 if (got_unknown_category == false) 139 { 140 got_unknown_category = true; 141 ListLogCategories (feedback_strm); 142 } 143 } 144 } 145 if (flag_bits == 0) 146 flag_bits = POSIX_LOG_DEFAULT; 147 g_log->GetMask().Reset(flag_bits); 148 g_log->GetOptions().Reset(log_options); 149 g_log_enabled = true; 150 } 151 return g_log; 152 } 153 154 void 155 ProcessPOSIXLog::ListLogCategories (Stream *strm) 156 { 157 strm->Printf ("Logging categories for '%s':\n" 158 " all - turn on all available logging categories\n" 159 " async - log asynchronous activity\n" 160 " break - log breakpoints\n" 161 " communication - log communication activity\n" 162 " default - enable the default set of logging categories for liblldb\n" 163 " packets - log gdb remote packets\n" 164 " memory - log memory reads and writes\n" 165 " data-short - log memory bytes for memory reads and writes for short transactions only\n" 166 " data-long - log memory bytes for memory reads and writes for all transactions\n" 167 " process - log process events and activities\n" 168 #ifndef LLDB_CONFIGURATION_BUILDANDINTEGRATION 169 " ptrace - log all calls to ptrace\n" 170 #endif 171 " registers - log register read/writes\n" 172 " thread - log thread events and activities\n" 173 " step - log step related activities\n" 174 " verbose - enable verbose logging\n" 175 " watch - log watchpoint related activities\n", ProcessPOSIXLog::m_pluginname); 176 } 177 178 179 void 180 ProcessPOSIXLog::LogIf (uint32_t mask, const char *format, ...) 181 { 182 Log *log (ProcessPOSIXLog::GetLogIfAllCategoriesSet (mask)); 183 if (log) 184 { 185 va_list args; 186 va_start (args, format); 187 log->VAPrintf (format, args); 188 va_end (args); 189 } 190 } 191 192 int ProcessPOSIXLog::m_nestinglevel; 193 const char *ProcessPOSIXLog::m_pluginname = ""; 194
