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Logging: Create logging macros based on fmtlib 

Add a new set of logging macros based on fmtlib
Similar but not exactly the same as https://github.com/citra-emu/citra/pull/3533

Citra currently uses a different version of fmt, which does not support FMT_VARIADIC so
make_args is used instead. On the other hand, yuzu uses fmt 4.1.0 which doesn't have make_args yet
so FMT_VARIADIC is used.
This commit is contained in:
Daniel Lim Wee Soong 2018-03-22 18:21:29 +08:00
parent f1beb69899
commit 3b558eebee
10 changed files with 112 additions and 67 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/common/CMakeLists.txt
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@ -90,7 +90,7 @@ endif()
create_target_directory_groups(common)
target_link_libraries(common PUBLIC Boost::boost microprofile)
target_link_libraries(common PUBLIC Boost::boost fmt microprofile)
if (ARCHITECTURE_x86_64)
target_link_libraries(common PRIVATE xbyak)
endif()

36
src/common/logging/backend.cpp
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@ -11,6 +11,7 @@
#include "common/logging/filter.h"
#include "common/logging/log.h"
#include "common/logging/text_formatter.h"
#include "common/string_util.h"
namespace Log {
@ -102,25 +103,20 @@ const char* GetLevelName(Level log_level) {
}
Entry CreateEntry(Class log_class, Level log_level, const char* filename, unsigned int line_nr,
const char* function, const char* format, va_list args) {
const char* function, std::string message) {
using std::chrono::duration_cast;
using std::chrono::steady_clock;
static steady_clock::time_point time_origin = steady_clock::now();
std::array<char, 4 * 1024> formatting_buffer;
Entry entry;
entry.timestamp = duration_cast<std::chrono::microseconds>(steady_clock::now() - time_origin);
entry.log_class = log_class;
entry.log_level = log_level;
snprintf(formatting_buffer.data(), formatting_buffer.size(), "%s:%s:%u", filename, function,
line_nr);
entry.location = std::string(formatting_buffer.data());
vsnprintf(formatting_buffer.data(), formatting_buffer.size(), format, args);
entry.message = std::string(formatting_buffer.data());
entry.filename = Common::TrimSourcePath(filename);
entry.line_num = line_nr;
entry.function = function;
entry.message = std::move(message);
return entry;
}
@ -131,15 +127,27 @@ void SetFilter(Filter* new_filter) {
filter = new_filter;
}
void LogMessage(Class log_class, Level log_level, const char* filename, unsigned int line_nr,
void LogMessage(Class log_class, Level log_level, const char* filename, unsigned int line_num,
const char* function, const char* format, ...) {
if (filter != nullptr && !filter->CheckMessage(log_class, log_level))
if (filter && !filter->CheckMessage(log_class, log_level))
return;
std::array<char, 4 * 1024> formatting_buffer;
va_list args;
va_start(args, format);
Entry entry = CreateEntry(log_class, log_level, filename, line_nr, function, format, args);
vsnprintf(formatting_buffer.data(), formatting_buffer.size(), format, args);
va_end(args);
Entry entry = CreateEntry(log_class, log_level, filename, line_num, function,
std::string(formatting_buffer.data()));
PrintColoredMessage(entry);
}
void FmtLogMessage(Class log_class, Level log_level, const char* filename, unsigned int line_num,
const char* function, const char* format, const fmt::ArgList& args) {
if (filter && !filter->CheckMessage(log_class, log_level))
return;
Entry entry =
CreateEntry(log_class, log_level, filename, line_num, function, fmt::format(format, args));
PrintColoredMessage(entry);
}

7
src/common/logging/backend.h
View File

@ -22,13 +22,16 @@ struct Entry {
std::chrono::microseconds timestamp;
Class log_class;
Level log_level;
std::string location;
std::string filename;
unsigned int line_num;
std::string function;
std::string message;
Entry() = default;
Entry(Entry&& o) = default;
Entry& operator=(Entry&& o) = default;
Entry& operator=(const Entry& o) = default;
};
/**
@ -44,7 +47,7 @@ const char* GetLevelName(Level log_level);
/// Creates a log entry by formatting the given source location, and message.
Entry CreateEntry(Class log_class, Level log_level, const char* filename, unsigned int line_nr,
const char* function, const char* format, va_list args);
const char* function, std::string message);
void SetFilter(Filter* filter);
} // namespace Log

6
src/common/logging/filter.cpp
View File

@ -65,14 +65,14 @@ bool Filter::ParseFilterRule(const std::string::const_iterator begin,
const std::string::const_iterator end) {
auto level_separator = std::find(begin, end, ':');
if (level_separator == end) {
LOG_ERROR(Log, "Invalid log filter. Must specify a log level after `:`: %s",
NGLOG_ERROR(Log, "Invalid log filter. Must specify a log level after `:`: %s",
std::string(begin, end).c_str());
return false;
}
const Level level = GetLevelByName(level_separator + 1, end);
if (level == Level::Count) {
LOG_ERROR(Log, "Unknown log level in filter: %s", std::string(begin, end).c_str());
NGLOG_ERROR(Log, "Unknown log level in filter: %s", std::string(begin, end).c_str());
return false;
}
@ -83,7 +83,7 @@ bool Filter::ParseFilterRule(const std::string::const_iterator begin,
const Class log_class = GetClassByName(begin, level_separator);
if (log_class == Class::Count) {
LOG_ERROR(Log, "Unknown log class in filter: %s", std::string(begin, end).c_str());
NGLOG_ERROR(Log, "Unknown log class in filter: %s", std::string(begin, end).c_str());
return false;
}

2
src/common/logging/filter.h
View File

@ -19,7 +19,7 @@ namespace Log {
class Filter {
public:
/// Initializes the filter with all classes having `default_level` as the minimum level.
Filter(Level default_level);
Filter(Level default_level = Level::Info);
/// Resets the filter so that all classes have `level` as the minimum displayed level.
void ResetAll(Level level);

33
src/common/logging/log.h
View File

@ -4,6 +4,8 @@
#pragma once
#include <chrono>
#include <fmt/format.h>
#include "common/common_types.h"
namespace Log {
@ -87,7 +89,7 @@ enum class Class : ClassType {
};
/// Logs a message to the global logger.
void LogMessage(Class log_class, Level log_level, const char* filename, unsigned int line_nr,
void LogMessage(Class log_class, Level log_level, const char* filename, unsigned int line_num,
const char* function,
#ifdef _MSC_VER
_Printf_format_string_
@ -99,6 +101,10 @@ void LogMessage(Class log_class, Level log_level, const char* filename, unsigned
#endif
;
void FmtLogMessage(Class log_class, Level log_level, const char* filename, unsigned int line_num,
const char* function, const char* format, const fmt::ArgList& args);
FMT_VARIADIC(void, FmtLogMessage, Class, Level, const char*, unsigned int, const char*, const char*)
} // namespace Log
#define LOG_GENERIC(log_class, log_level, ...) \
@ -121,3 +127,28 @@ void LogMessage(Class log_class, Level log_level, const char* filename, unsigned
LOG_GENERIC(::Log::Class::log_class, ::Log::Level::Error, __VA_ARGS__)
#define LOG_CRITICAL(log_class, ...) \
LOG_GENERIC(::Log::Class::log_class, ::Log::Level::Critical, __VA_ARGS__)
// Define the fmt lib macros
#ifdef _DEBUG
#define NGLOG_TRACE(log_class, ...) \
::Log::FmtLogMessage(::Log::Class::log_class, ::Log::Level::Trace, __FILE__, __LINE__, \
__func__, __VA_ARGS__)
#else
#define NGLOG_TRACE(log_class, fmt, ...) (void(0))
#endif
#define NGLOG_DEBUG(log_class, ...) \
::Log::FmtLogMessage(::Log::Class::log_class, ::Log::Level::Debug, __FILE__, __LINE__, \
__func__, __VA_ARGS__)
#define NGLOG_INFO(log_class, ...) \
::Log::FmtLogMessage(::Log::Class::log_class, ::Log::Level::Info, __FILE__, __LINE__, \
__func__, __VA_ARGS__)
#define NGLOG_WARNING(log_class, ...) \
::Log::FmtLogMessage(::Log::Class::log_class, ::Log::Level::Warning, __FILE__, __LINE__, \
__func__, __VA_ARGS__)
#define NGLOG_ERROR(log_class, ...) \
::Log::FmtLogMessage(::Log::Class::log_class, ::Log::Level::Error, __FILE__, __LINE__, \
__func__, __VA_ARGS__)
#define NGLOG_CRITICAL(log_class, ...) \
::Log::FmtLogMessage(::Log::Class::log_class, ::Log::Level::Critical, __FILE__, __LINE__, \
__func__, __VA_ARGS__)

41
src/common/logging/text_formatter.cpp
View File

@ -18,50 +18,29 @@
namespace Log {
// TODO(bunnei): This should be moved to a generic path manipulation library
const char* TrimSourcePath(const char* path, const char* root) {
const char* p = path;
while (*p != '\0') {
const char* next_slash = p;
while (*next_slash != '\0' && *next_slash != '/' && *next_slash != '\\') {
++next_slash;
}
bool is_src = Common::ComparePartialString(p, next_slash, root);
p = next_slash;
if (*p != '\0') {
++p;
}
if (is_src) {
path = p;
}
}
return path;
}
void FormatLogMessage(const Entry& entry, char* out_text, size_t text_len) {
std::string FormatLogMessage(const Entry& entry) {
unsigned int time_seconds = static_cast<unsigned int>(entry.timestamp.count() / 1000000);
unsigned int time_fractional = static_cast<unsigned int>(entry.timestamp.count() % 1000000);
const char* class_name = GetLogClassName(entry.log_class);
const char* level_name = GetLevelName(entry.log_level);
snprintf(out_text, text_len, "[%4u.%06u] %s <%s> %s: %s", time_seconds, time_fractional,
class_name, level_name, TrimSourcePath(entry.location.c_str()), entry.message.c_str());
return fmt::format("[{:4d}.{:06d}] {} <{}> {}:{}:{}: {}", time_seconds, time_fractional,
class_name, level_name, entry.filename, entry.function, entry.line_num,
entry.message);
}
void PrintMessage(const Entry& entry) {
std::array<char, 4 * 1024> format_buffer;
FormatLogMessage(entry, format_buffer.data(), format_buffer.size());
fputs(format_buffer.data(), stderr);
fputc('\n', stderr);
auto str = FormatLogMessage(entry) + '\n';
fputs(str.c_str(), stderr);
}
void PrintColoredMessage(const Entry& entry) {
#ifdef _WIN32
static HANDLE console_handle = GetStdHandle(STD_ERROR_HANDLE);
HANDLE console_handle = GetStdHandle(STD_ERROR_HANDLE);
if (console_handle == INVALID_HANDLE_VALUE) {
return;
}
CONSOLE_SCREEN_BUFFER_INFO original_info = {0};
GetConsoleScreenBufferInfo(console_handle, &original_info);

14
src/common/logging/text_formatter.h
View File

@ -10,20 +10,8 @@ namespace Log {
struct Entry;
/**
* Attempts to trim an arbitrary prefix from `path`, leaving only the part starting at `root`. It's
* intended to be used to strip a system-specific build directory from the `__FILE__` macro,
* leaving only the path relative to the sources root.
*
* @param path The input file path as a null-terminated string
* @param root The name of the root source directory as a null-terminated string. Path up to and
* including the last occurrence of this name will be stripped
* @return A pointer to the same string passed as `path`, but starting at the trimmed portion
*/
const char* TrimSourcePath(const char* path, const char* root = "src");
/// Formats a log entry into the provided text buffer.
void FormatLogMessage(const Entry& entry, char* out_text, size_t text_len);
std::string FormatLogMessage(const Entry& entry);
/// Formats and prints a log entry to stderr.
void PrintMessage(const Entry& entry);
/// Prints the same message as `PrintMessage`, but colored acoording to the severity level.

23
src/common/string_util.cpp
View File

@ -462,4 +462,27 @@ std::string StringFromFixedZeroTerminatedBuffer(const char* buffer, size_t max_l
return std::string(buffer, len);
}
const char* TrimSourcePath(const char* path, const char* root) {
const char* p = path;
while (*p != '\0') {
const char* next_slash = p;
while (*next_slash != '\0' && *next_slash != '/' && *next_slash != '\\') {
++next_slash;
}
bool is_src = Common::ComparePartialString(p, next_slash, root);
p = next_slash;
if (*p != '\0') {
++p;
}
if (is_src) {
path = p;
}
}
return path;
}
} // namespace Common

13
src/common/string_util.h
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@ -134,4 +134,17 @@ bool ComparePartialString(InIt begin, InIt end, const char* other) {
* NUL-terminated then the string ends at max_len characters.
*/
std::string StringFromFixedZeroTerminatedBuffer(const char* buffer, size_t max_len);
/**
* Attempts to trim an arbitrary prefix from `path`, leaving only the part starting at `root`. It's
* intended to be used to strip a system-specific build directory from the `__FILE__` macro,
* leaving only the path relative to the sources root.
*
* @param path The input file path as a null-terminated string
* @param root The name of the root source directory as a null-terminated string. Path up to and
* including the last occurrence of this name will be stripped
* @return A pointer to the same string passed as `path`, but starting at the trimmed portion
*/
const char* TrimSourcePath(const char* path, const char* root = "src");
} // namespace Common