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llvm-project/lldb/source/lldb-log.cpp

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//===-- lldb-log.cpp --------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/lldb-private-log.h"
// C Includes
// C++ Includes
#include <atomic>
// Other libraries and framework includes
// Project includes
#include "lldb/Interpreter/Args.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/StreamFile.h"
#include <string.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_lob_sp the first time this function is
// called.
static std::atomic<bool> g_log_enabled {false};
static Log * g_log = NULL;
static Log *
GetLog ()
{
if (!g_log_enabled)
return NULL;
return g_log;
}
uint32_t
lldb_private::GetLogMask ()
{
Log *log(GetLog ());
if (log)
return log->GetMask().Get();
return 0;
}
bool
lldb_private::IsLogVerbose ()
{
uint32_t mask = GetLogMask();
return (mask & LIBLLDB_LOG_VERBOSE);
}
Log *
lldb_private::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;
}
void
lldb_private::LogIfAllCategoriesSet (uint32_t mask, const char *format, ...)
{
Log *log(GetLogIfAllCategoriesSet (mask));
if (log)
{
va_list args;
va_start (args, format);
log->VAPrintf (format, args);
va_end (args);
}
}
void
lldb_private::LogIfAnyCategoriesSet (uint32_t mask, const char *format, ...)
{
Log *log(GetLogIfAnyCategoriesSet (mask));
if (log)
{
va_list args;
va_start (args, format);
log->VAPrintf (format, args);
va_end (args);
}
}
Log *
lldb_private::GetLogIfAnyCategoriesSet (uint32_t mask)
{
Log *log(GetLog ());
if (log && mask && (mask & log->GetMask().Get()))
return log;
return NULL;
}
void
lldb_private::DisableLog (const char **categories, Stream *feedback_strm)
{
Log *log(GetLog ());
if (log)
{
uint32_t flag_bits = 0;
if (categories[0] != NULL)
{
flag_bits = log->GetMask().Get();
for (size_t i = 0; categories[i] != NULL; ++i)
{
const char *arg = categories[i];
if (0 == ::strcasecmp(arg, "all")) flag_bits &= ~LIBLLDB_LOG_ALL;
else if (0 == ::strcasecmp(arg, "api")) flag_bits &= ~LIBLLDB_LOG_API;
else if (0 == ::strncasecmp(arg, "break", 5)) flag_bits &= ~LIBLLDB_LOG_BREAKPOINTS;
else if (0 == ::strcasecmp(arg, "commands")) flag_bits &= ~LIBLLDB_LOG_COMMANDS;
else if (0 == ::strcasecmp(arg, "default")) flag_bits &= ~LIBLLDB_LOG_DEFAULT;
else if (0 == ::strcasecmp(arg, "dyld")) flag_bits &= ~LIBLLDB_LOG_DYNAMIC_LOADER;
else if (0 == ::strncasecmp(arg, "event", 5)) flag_bits &= ~LIBLLDB_LOG_EVENTS;
else if (0 == ::strncasecmp(arg, "expr", 4)) flag_bits &= ~LIBLLDB_LOG_EXPRESSIONS;
else if (0 == ::strncasecmp(arg, "object", 6)) flag_bits &= ~LIBLLDB_LOG_OBJECT;
else if (0 == ::strcasecmp(arg, "process")) flag_bits &= ~LIBLLDB_LOG_PROCESS;
else if (0 == ::strcasecmp(arg, "platform")) flag_bits &= ~LIBLLDB_LOG_PLATFORM;
else if (0 == ::strcasecmp(arg, "script")) flag_bits &= ~LIBLLDB_LOG_SCRIPT;
else if (0 == ::strcasecmp(arg, "state")) flag_bits &= ~LIBLLDB_LOG_STATE;
else if (0 == ::strcasecmp(arg, "step")) flag_bits &= ~LIBLLDB_LOG_STEP;
else if (0 == ::strcasecmp(arg, "thread")) flag_bits &= ~LIBLLDB_LOG_THREAD;
else if (0 == ::strcasecmp(arg, "target")) flag_bits &= ~LIBLLDB_LOG_TARGET;
else if (0 == ::strcasecmp(arg, "verbose")) flag_bits &= ~LIBLLDB_LOG_VERBOSE;
else if (0 == ::strncasecmp(arg, "watch", 5)) flag_bits &= ~LIBLLDB_LOG_WATCHPOINTS;
else if (0 == ::strncasecmp(arg, "temp", 4)) flag_bits &= ~LIBLLDB_LOG_TEMPORARY;
else if (0 == ::strncasecmp(arg, "comm", 4)) flag_bits &= ~LIBLLDB_LOG_COMMUNICATION;
else if (0 == ::strncasecmp(arg, "conn", 4)) flag_bits &= ~LIBLLDB_LOG_CONNECTION;
else if (0 == ::strncasecmp(arg, "host", 4)) flag_bits &= ~LIBLLDB_LOG_HOST;
else if (0 == ::strncasecmp(arg, "unwind", 6)) flag_bits &= ~LIBLLDB_LOG_UNWIND;
else if (0 == ::strncasecmp(arg, "types", 5)) flag_bits &= ~LIBLLDB_LOG_TYPES;
else if (0 == ::strncasecmp(arg, "symbol", 6)) flag_bits &= ~LIBLLDB_LOG_SYMBOLS;
else if (0 == ::strcasecmp(arg, "system-runtime")) flag_bits &= ~LIBLLDB_LOG_SYSTEM_RUNTIME;
else if (0 == ::strncasecmp(arg, "module", 6)) flag_bits &= ~LIBLLDB_LOG_MODULES;
else if (0 == ::strncasecmp(arg, "mmap", 4)) flag_bits &= ~LIBLLDB_LOG_MMAP;
else if (0 == ::strcasecmp(arg, "os")) flag_bits &= ~LIBLLDB_LOG_OS;
else if (0 == ::strcasecmp(arg, "jit")) flag_bits &= ~LIBLLDB_LOG_JIT_LOADER;
else
{
feedback_strm->Printf ("error: unrecognized log category '%s'\n", arg);
ListLogCategories (feedback_strm);
return;
}
}
}
log->GetMask().Reset (flag_bits);
if (flag_bits == 0)
{
log->SetStream(lldb::StreamSP());
g_log_enabled = false;
}
}
return;
}
Log *
lldb_private::EnableLog (StreamSP &log_stream_sp, uint32_t log_options, const char **categories, 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;
if (g_log)
flag_bits = g_log->GetMask().Get();
else
flag_bits = 0;
// 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)
{
for (size_t i=0; categories[i] != NULL; ++i)
{
const char *arg = categories[i];
if (0 == ::strcasecmp(arg, "all")) flag_bits |= LIBLLDB_LOG_ALL;
else if (0 == ::strcasecmp(arg, "api")) flag_bits |= LIBLLDB_LOG_API;
else if (0 == ::strncasecmp(arg, "break", 5)) flag_bits |= LIBLLDB_LOG_BREAKPOINTS;
else if (0 == ::strcasecmp(arg, "commands")) flag_bits |= LIBLLDB_LOG_COMMANDS;
else if (0 == ::strncasecmp(arg, "commu", 5)) flag_bits |= LIBLLDB_LOG_COMMUNICATION;
else if (0 == ::strncasecmp(arg, "conn", 4)) flag_bits |= LIBLLDB_LOG_CONNECTION;
else if (0 == ::strcasecmp(arg, "default")) flag_bits |= LIBLLDB_LOG_DEFAULT;
else if (0 == ::strcasecmp(arg, "dyld")) flag_bits |= LIBLLDB_LOG_DYNAMIC_LOADER;
else if (0 == ::strncasecmp(arg, "event", 5)) flag_bits |= LIBLLDB_LOG_EVENTS;
else if (0 == ::strncasecmp(arg, "expr", 4)) flag_bits |= LIBLLDB_LOG_EXPRESSIONS;
else if (0 == ::strncasecmp(arg, "host", 4)) flag_bits |= LIBLLDB_LOG_HOST;
else if (0 == ::strncasecmp(arg, "mmap", 4)) flag_bits |= LIBLLDB_LOG_MMAP;
else if (0 == ::strncasecmp(arg, "module", 6)) flag_bits |= LIBLLDB_LOG_MODULES;
else if (0 == ::strncasecmp(arg, "object", 6)) flag_bits |= LIBLLDB_LOG_OBJECT;
else if (0 == ::strcasecmp(arg, "os")) flag_bits |= LIBLLDB_LOG_OS;
else if (0 == ::strcasecmp(arg, "platform")) flag_bits |= LIBLLDB_LOG_PLATFORM;
else if (0 == ::strcasecmp(arg, "process")) flag_bits |= LIBLLDB_LOG_PROCESS;
else if (0 == ::strcasecmp(arg, "script")) flag_bits |= LIBLLDB_LOG_SCRIPT;
else if (0 == ::strcasecmp(arg, "state")) flag_bits |= LIBLLDB_LOG_STATE;
else if (0 == ::strcasecmp(arg, "step")) flag_bits |= LIBLLDB_LOG_STEP;
else if (0 == ::strncasecmp(arg, "symbol", 6)) flag_bits |= LIBLLDB_LOG_SYMBOLS;
else if (0 == ::strcasecmp(arg, "system-runtime")) flag_bits |= LIBLLDB_LOG_SYSTEM_RUNTIME;
else if (0 == ::strcasecmp(arg, "target")) flag_bits |= LIBLLDB_LOG_TARGET;
else if (0 == ::strncasecmp(arg, "temp", 4)) flag_bits |= LIBLLDB_LOG_TEMPORARY;
else if (0 == ::strcasecmp(arg, "thread")) flag_bits |= LIBLLDB_LOG_THREAD;
else if (0 == ::strncasecmp(arg, "types", 5)) flag_bits |= LIBLLDB_LOG_TYPES;
else if (0 == ::strncasecmp(arg, "unwind", 6)) flag_bits |= LIBLLDB_LOG_UNWIND;
else if (0 == ::strcasecmp(arg, "verbose")) flag_bits |= LIBLLDB_LOG_VERBOSE;
else if (0 == ::strncasecmp(arg, "watch", 5)) flag_bits |= LIBLLDB_LOG_WATCHPOINTS;
else if (0 == ::strcasecmp(arg, "jit")) flag_bits |= LIBLLDB_LOG_JIT_LOADER;
else
{
feedback_strm->Printf("error: unrecognized log category '%s'\n", arg);
ListLogCategories (feedback_strm);
return g_log;
}
}
g_log->GetMask().Reset(flag_bits);
g_log->GetOptions().Reset(log_options);
}
g_log_enabled = true;
return g_log;
}
void
lldb_private::ListLogCategories (Stream *strm)
{
strm->Printf("Logging categories for 'lldb':\n"
" all - turn on all available logging categories\n"
" api - enable logging of API calls and return values\n"
" break - log breakpoints\n"
" commands - log command argument parsing\n"
" communication - log communication activities\n"
" connection - log connection details\n"
" default - enable the default set of logging categories for liblldb\n"
" dyld - log shared library related activities\n"
" events - log broadcaster, listener and event queue activities\n"
" expr - log expressions\n"
" host - log host activities\n"
" jit - log JIT events in the target\n"
" mmap - log mmap related activities\n"
" module - log module activities such as when modules are created, destroyed, replaced, and more\n"
" object - log object construction/destruction for important objects\n"
" os - log OperatingSystem plugin related activities\n"
" platform - log platform events and activities\n"
" process - log process events and activities\n"
" script - log events about the script interpreter\n"
" state - log private and public process state changes\n"
" step - log step related activities\n"
" symbol - log symbol related issues and warnings\n"
" system-runtime - log system runtime events\n"
" target - log target events and activities\n"
" thread - log thread events and activities\n"
" types - log type system related activities\n"
" unwind - log stack unwind activities\n"
" verbose - enable verbose logging\n"
" watch - log watchpoint related activities\n");
}
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