forked from OSchip/llvm-project
216 lines
7.9 KiB
C++
216 lines
7.9 KiB
C++
//===-- ProcessGDBRemoteLog.cpp ---------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "ProcessGDBRemoteLog.h"
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#include <mutex>
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#include "lldb/Interpreter/Args.h"
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#include "lldb/Core/StreamFile.h"
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#include "ProcessGDBRemote.h"
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::process_gdb_remote;
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// We want to avoid global constructors where code needs to be run so here we
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// control access to our static g_log_sp by hiding it in a singleton function
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// that will construct the static g_lob_sp the first time this function is
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// called.
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static bool g_log_enabled = false;
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static Log * g_log = NULL;
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static Log *
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GetLog ()
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{
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if (!g_log_enabled)
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return NULL;
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return g_log;
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}
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void
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ProcessGDBRemoteLog::Initialize()
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{
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static ConstString g_name("gdb-remote");
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static std::once_flag g_once_flag;
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std::call_once(g_once_flag, [](){
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Log::Callbacks log_callbacks = {
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DisableLog,
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EnableLog,
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ListLogCategories
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};
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Log::RegisterLogChannel (g_name, log_callbacks);
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});
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}
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Log *
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ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (uint32_t mask)
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{
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Log *log(GetLog ());
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if (log && mask)
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{
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uint32_t log_mask = log->GetMask().Get();
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if ((log_mask & mask) != mask)
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return NULL;
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}
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return log;
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}
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Log *
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ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (uint32_t mask)
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{
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Log *log(GetLog ());
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if (log && log->GetMask().Get() & mask)
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return log;
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return NULL;
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}
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void
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ProcessGDBRemoteLog::DisableLog (const char **categories, Stream *feedback_strm)
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{
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Log *log (GetLog ());
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if (log)
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{
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uint32_t flag_bits = 0;
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if (categories[0] != NULL)
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{
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flag_bits = log->GetMask().Get();
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for (size_t i = 0; categories[i] != NULL; ++i)
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{
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const char *arg = categories[i];
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if (::strcasecmp (arg, "all") == 0 ) flag_bits &= ~GDBR_LOG_ALL;
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else if (::strcasecmp (arg, "async") == 0 ) flag_bits &= ~GDBR_LOG_ASYNC;
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else if (::strncasecmp (arg, "break", 5) == 0 ) flag_bits &= ~GDBR_LOG_BREAKPOINTS;
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else if (::strncasecmp (arg, "comm", 4) == 0 ) flag_bits &= ~GDBR_LOG_COMM;
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else if (::strcasecmp (arg, "default") == 0 ) flag_bits &= ~GDBR_LOG_DEFAULT;
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else if (::strcasecmp (arg, "packets") == 0 ) flag_bits &= ~GDBR_LOG_PACKETS;
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else if (::strcasecmp (arg, "memory") == 0 ) flag_bits &= ~GDBR_LOG_MEMORY;
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else if (::strcasecmp (arg, "data-short") == 0 ) flag_bits &= ~GDBR_LOG_MEMORY_DATA_SHORT;
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else if (::strcasecmp (arg, "data-long") == 0 ) flag_bits &= ~GDBR_LOG_MEMORY_DATA_LONG;
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else if (::strcasecmp (arg, "process") == 0 ) flag_bits &= ~GDBR_LOG_PROCESS;
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else if (::strcasecmp (arg, "step") == 0 ) flag_bits &= ~GDBR_LOG_STEP;
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else if (::strcasecmp (arg, "thread") == 0 ) flag_bits &= ~GDBR_LOG_THREAD;
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else if (::strcasecmp (arg, "verbose") == 0 ) flag_bits &= ~GDBR_LOG_VERBOSE;
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else if (::strncasecmp (arg, "watch", 5) == 0 ) flag_bits &= ~GDBR_LOG_WATCHPOINTS;
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else
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{
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feedback_strm->Printf("error: unrecognized log category '%s'\n", arg);
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ListLogCategories (feedback_strm);
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}
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}
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}
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if (flag_bits == 0)
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g_log_enabled = false;
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else
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log->GetMask().Reset (flag_bits);
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}
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return;
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}
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Log *
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ProcessGDBRemoteLog::EnableLog (StreamSP &log_stream_sp, uint32_t log_options, const char **categories, Stream *feedback_strm)
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{
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// Try see if there already is a log - that way we can reuse its settings.
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// We could reuse the log in toto, but we don't know that the stream is the same.
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uint32_t flag_bits = 0;
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if (g_log)
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flag_bits = g_log->GetMask().Get();
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// Now make a new log with this stream if one was provided
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if (log_stream_sp)
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{
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if (g_log)
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g_log->SetStream(log_stream_sp);
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else
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g_log = new Log(log_stream_sp);
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}
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if (g_log)
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{
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bool got_unknown_category = false;
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for (size_t i=0; categories[i] != NULL; ++i)
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{
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const char *arg = categories[i];
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if (::strcasecmp (arg, "all") == 0 ) flag_bits |= GDBR_LOG_ALL;
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else if (::strcasecmp (arg, "async") == 0 ) flag_bits |= GDBR_LOG_ASYNC;
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else if (::strncasecmp (arg, "break", 5) == 0 ) flag_bits |= GDBR_LOG_BREAKPOINTS;
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else if (::strncasecmp (arg, "comm", 4) == 0 ) flag_bits |= GDBR_LOG_COMM;
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else if (::strcasecmp (arg, "default") == 0 ) flag_bits |= GDBR_LOG_DEFAULT;
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else if (::strcasecmp (arg, "packets") == 0 ) flag_bits |= GDBR_LOG_PACKETS;
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else if (::strcasecmp (arg, "memory") == 0 ) flag_bits |= GDBR_LOG_MEMORY;
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else if (::strcasecmp (arg, "data-short") == 0 ) flag_bits |= GDBR_LOG_MEMORY_DATA_SHORT;
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else if (::strcasecmp (arg, "data-long") == 0 ) flag_bits |= GDBR_LOG_MEMORY_DATA_LONG;
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else if (::strcasecmp (arg, "process") == 0 ) flag_bits |= GDBR_LOG_PROCESS;
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else if (::strcasecmp (arg, "step") == 0 ) flag_bits |= GDBR_LOG_STEP;
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else if (::strcasecmp (arg, "thread") == 0 ) flag_bits |= GDBR_LOG_THREAD;
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else if (::strcasecmp (arg, "verbose") == 0 ) flag_bits |= GDBR_LOG_VERBOSE;
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else if (::strncasecmp (arg, "watch", 5) == 0 ) flag_bits |= GDBR_LOG_WATCHPOINTS;
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else
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{
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feedback_strm->Printf("error: unrecognized log category '%s'\n", arg);
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if (got_unknown_category == false)
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{
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got_unknown_category = true;
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ListLogCategories (feedback_strm);
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}
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}
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}
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if (flag_bits == 0)
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flag_bits = GDBR_LOG_DEFAULT;
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g_log->GetMask().Reset(flag_bits);
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g_log->GetOptions().Reset(log_options);
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}
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g_log_enabled = true;
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return g_log;
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}
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void
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ProcessGDBRemoteLog::ListLogCategories (Stream *strm)
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{
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strm->Printf ("Logging categories for '%s':\n"
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" all - turn on all available logging categories\n"
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" async - log asynchronous activity\n"
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" break - log breakpoints\n"
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" communication - log communication activity\n"
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" default - enable the default set of logging categories for liblldb\n"
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" packets - log gdb remote packets\n"
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" memory - log memory reads and writes\n"
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" data-short - log memory bytes for memory reads and writes for short transactions only\n"
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" data-long - log memory bytes for memory reads and writes for all transactions\n"
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" process - log process events and activities\n"
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" thread - log thread events and activities\n"
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" step - log step related activities\n"
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" verbose - enable verbose logging\n"
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" watch - log watchpoint related activities\n", ProcessGDBRemote::GetPluginNameStatic().GetCString());
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}
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void
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ProcessGDBRemoteLog::LogIf (uint32_t mask, const char *format, ...)
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{
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Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (mask));
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if (log)
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{
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va_list args;
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va_start (args, format);
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log->VAPrintf (format, args);
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va_end (args);
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}
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}
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