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Diffstat (limited to 'source/Plugins/Process/POSIX/ProcessPOSIXLog.cpp')
| -rw-r--r-- | source/Plugins/Process/POSIX/ProcessPOSIXLog.cpp | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/source/Plugins/Process/POSIX/ProcessPOSIXLog.cpp b/source/Plugins/Process/POSIX/ProcessPOSIXLog.cpp new file mode 100644 index 000000000000..624ca87b883a --- /dev/null +++ b/source/Plugins/Process/POSIX/ProcessPOSIXLog.cpp @@ -0,0 +1,193 @@ +//===-- ProcessPOSIXLog.cpp ---------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "ProcessPOSIXLog.h" + +#include "lldb/Interpreter/Args.h" +#include "lldb/Core/StreamFile.h" + +#include "ProcessPOSIX.h" +#include "ProcessPOSIXLog.h" + +using namespace lldb; +using namespace lldb_private; + + +// We want to avoid global constructors where code needs to be run so here we +// control access to our static g_log_sp by hiding it in a singleton function +// that will construct the static g_log_sp the first time this function is +// called. +static bool g_log_enabled = false; +static Log * g_log = NULL; +static Log * +GetLog () +{ + if (!g_log_enabled) + return NULL; + return g_log; +} + + +Log * +ProcessPOSIXLog::GetLogIfAllCategoriesSet (uint32_t mask) +{ + Log *log(GetLog ()); + if (log && mask) + { + uint32_t log_mask = log->GetMask().Get(); + if ((log_mask & mask) != mask) + return NULL; + } + return log; +} + +static uint32_t +GetFlagBits (const char *arg) +{ + if (::strcasecmp (arg, "all") == 0 ) return POSIX_LOG_ALL; + else if (::strcasecmp (arg, "async") == 0 ) return POSIX_LOG_ASYNC; + else if (::strncasecmp (arg, "break", 5) == 0 ) return POSIX_LOG_BREAKPOINTS; + else if (::strncasecmp (arg, "comm", 4) == 0 ) return POSIX_LOG_COMM; + else if (::strcasecmp (arg, "default") == 0 ) return POSIX_LOG_DEFAULT; + else if (::strcasecmp (arg, "packets") == 0 ) return POSIX_LOG_PACKETS; + else if (::strcasecmp (arg, "memory") == 0 ) return POSIX_LOG_MEMORY; + else if (::strcasecmp (arg, "data-short") == 0 ) return POSIX_LOG_MEMORY_DATA_SHORT; + else if (::strcasecmp (arg, "data-long") == 0 ) return POSIX_LOG_MEMORY_DATA_LONG; + else if (::strcasecmp (arg, "process") == 0 ) return POSIX_LOG_PROCESS; + else if (::strcasecmp (arg, "ptrace") == 0 ) return POSIX_LOG_PTRACE; + else if (::strcasecmp (arg, "registers") == 0 ) return POSIX_LOG_REGISTERS; + else if (::strcasecmp (arg, "step") == 0 ) return POSIX_LOG_STEP; + else if (::strcasecmp (arg, "thread") == 0 ) return POSIX_LOG_THREAD; + else if (::strcasecmp (arg, "verbose") == 0 ) return POSIX_LOG_VERBOSE; + else if (::strncasecmp (arg, "watch", 5) == 0 ) return POSIX_LOG_WATCHPOINTS; + return 0; +} + +void +ProcessPOSIXLog::DisableLog (const char **args, Stream *feedback_strm) +{ + Log *log (GetLog ()); + if (log) + { + uint32_t flag_bits = 0; + + flag_bits = log->GetMask().Get(); + for (; args[0]; args++) + { + const char *arg = args[0]; + uint32_t bits = GetFlagBits(arg); + + if (bits) + { + flag_bits &= ~bits; + } + else + { + feedback_strm->Printf("error: unrecognized log category '%s'\n", arg); + ListLogCategories (feedback_strm); + } + } + + log->GetMask().Reset (flag_bits); + if (flag_bits == 0) + g_log_enabled = false; + } + + return; +} + +Log * +ProcessPOSIXLog::EnableLog (StreamSP &log_stream_sp, uint32_t log_options, const char **args, Stream *feedback_strm) +{ + // Try see if there already is a log - that way we can reuse its settings. + // We could reuse the log in toto, but we don't know that the stream is the same. + uint32_t flag_bits = 0; + if (g_log) + flag_bits = g_log->GetMask().Get(); + + // Now make a new log with this stream if one was provided + if (log_stream_sp) + { + if (g_log) + g_log->SetStream(log_stream_sp); + else + g_log = new Log(log_stream_sp); + } + + if (g_log) + { + bool got_unknown_category = false; + for (; args[0]; args++) + { + const char *arg = args[0]; + uint32_t bits = GetFlagBits(arg); + + if (bits) + { + flag_bits |= bits; + } + else + { + feedback_strm->Printf("error: unrecognized log category '%s'\n", arg); + if (got_unknown_category == false) + { + got_unknown_category = true; + ListLogCategories (feedback_strm); + } + } + } + if (flag_bits == 0) + flag_bits = POSIX_LOG_DEFAULT; + g_log->GetMask().Reset(flag_bits); + g_log->GetOptions().Reset(log_options); + g_log_enabled = true; + } + return g_log; +} + +void +ProcessPOSIXLog::ListLogCategories (Stream *strm) +{ + strm->Printf ("Logging categories for '%s':\n" + " all - turn on all available logging categories\n" + " async - log asynchronous activity\n" + " break - log breakpoints\n" + " communication - log communication activity\n" + " default - enable the default set of logging categories for liblldb\n" + " packets - log gdb remote packets\n" + " memory - log memory reads and writes\n" + " data-short - log memory bytes for memory reads and writes for short transactions only\n" + " data-long - log memory bytes for memory reads and writes for all transactions\n" + " process - log process events and activities\n" +#ifndef LLDB_CONFIGURATION_BUILDANDINTEGRATION + " ptrace - log all calls to ptrace\n" +#endif + " registers - log register read/writes\n" + " thread - log thread events and activities\n" + " step - log step related activities\n" + " verbose - enable verbose logging\n" + " watch - log watchpoint related activities\n", ProcessPOSIXLog::m_pluginname); +} + + +void +ProcessPOSIXLog::LogIf (uint32_t mask, const char *format, ...) +{ + Log *log (ProcessPOSIXLog::GetLogIfAllCategoriesSet (mask)); + if (log) + { + va_list args; + va_start (args, format); + log->VAPrintf (format, args); + va_end (args); + } +} + +int ProcessPOSIXLog::m_nestinglevel; +const char *ProcessPOSIXLog::m_pluginname = ""; |