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efl/legacy/eina/src/lib/eina_log.c

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/* EINA - EFL data type library
* Copyright (C) 2007-2009 Jorge Luis Zapata Muga, Cedric Bail, Andre Dieb
* Martins
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library;
* if not, see <http://www.gnu.org/licenses/>.
*/
/**
* @page tutorial_log_page Log Tutorial
*
* @section tutorial_log_introduction Introduction
*
* The Eina Log module provides logging facilities for libraries and
* applications. It provides colored logging, basic logging levels (error,
* warning, debug, info, critical) and loggers - called logging domains -
* which will be covered on next sections.
*
* @section tutorial_log_basic_usage Basic Usage
*
* Log messages can be displayed using the following macros:
*
* @li EINA_LOG_ERR(),
* @li EINA_LOG_INFO(),
* @li EINA_LOG_WARN(),
* @li EINA_LOG_DBG().
*
* Here is an example:
*
* @code
* #include <stdlib.h>
* #include <stdio.h>
*
* #include <Eina.h>
*
* void test(int i)
* {
* EINA_LOG_DBG("Entering test");
*
* if (i < 0)
* {
* EINA_LOG_ERR("Argument is negative");
* return;
* }
*
* EINA_LOG_INFO("argument non negative");
*
* EINA_LOG_DBG("Exiting test");
* }
*
* int main(void)
* {
* if (!eina_init())
* {
* printf("log during the initialization of Eina_Log module\n");
* return EXIT_FAILURE;
* }
*
* test(-1);
* test(0);
*
* eina_shutdown();
*
* return EXIT_SUCCESS;
* }
* @endcode
*
* If you compiled Eina without debug mode, execution will yield only one log
* message, which is "argument is negative".
*
* Here we introduce the concept of logging domains (or loggers), which might
* already be familiar to readers. It is basically a way to separate a set of
* log messages into a context (e.g. a module) and provide a way of controlling
* this set as a whole.
*
* For example, suppose you have 3 different modules on your application and you
* want to get logging only from one of them (e.g. create some sort of filter).
* For achieving that, all you need to do is create a logging domain for each
* module so that all logging inside a module can be considered as a whole.
*
* Logging domains are specified by a name, color applied to the name and the
* level. The first two (name and color) are set through code, that is, inside
* your application/module/library.
*
* The level is used for controlling which messages should appear. It
* specifies the lowest level that should be displayed (e.g. a message
* with level 11 being logged on a domain with level set to 10 would be
* displayed, while a message with level 9 wouldn't).
*
* The domain level is set during runtime (in contrast with the name and
* color) through the environment variable EINA_LOG_LEVELS. This variable
* expects a list in the form domain_name1:level1,domain_name2:level2,... . For
* example:
*
* @code
*
* EINA_LOG_LEVELS=mymodule1:5,mymodule2:2,mymodule3:0 ./myapp
*
* @endcode
*
* This line would set mymodule1 level to 5, mymodule2 level to 2 and mymodule3
* level to 0.
*
*
* There's also a global logger to which EINA_LOG_(ERR, DBG, INFO, CRIT, WARN)
* macros do log on. It is a logger that is created internally by Eina Log with
* an empty name and can be used for general logging (where logging domains do
* not apply).
*
* Since this global logger doesn't have a name, you can't set its level through
* EINA_LOG_LEVELS variable. Here we introduce a second environment variable
* that is a bit more special: EINA_LOG_LEVEL.
*
* This variable specifies the level of the global logging domain and the level
* of domains that haven't been set through EINA_LOG_LEVELS. Here's an example:
*
* @code
*
* EINA_LOG_LEVEL=3 EINA_LOG_LEVELS=module1:10,module3:2 ./myapp
*
* @endcode
*
* Supposing you have modules named "module1", "module2" and "module3", this
* line would result in module1 with level 10, module2 with level 3 and module3
* with level 2. Note that module2's level wasn't specified, so it's level is
* set to the global level. This way we can easily apply filters to multiple
* domains with only one parameter (EINA_LOG_LEVEL=num).
*
* The global level (EINA_LOG_LEVEL) can also be set through code, using
* eina_log_level_set() function.
*
*
* While developing your libraries or applications, you may notice that
* EINA_LOG_DOM_(ERR, DBG, INFO, CRIT, WARN) macros also print out
* messages from eina itself. Here we introduce another environment variable
* that is a bit more special: EINA_LOG_LEVELS_GLOB.
*
* This variable allows you to disable the logging of any/all code in eina itself.
* This is useful when developing your libraries or applications so that you can
* see your own domain's messages easier without having to sift through a lot of
* internal eina debug messages. Here's an example:
*
* @code
*
* EINA_LOG_LEVEL=3 EINA_LOG_LEVELS_GLOB=eina_*:0 ./myapp
*
* @endcode
*
* This will disable eina_log output from all internal eina code thus allowing
* you to see your own domain messages easier.
*
* @section tutorial_log_advanced_display Advanced usage of print callbacks
*
* The log module allows the user to change the way
* eina_log_print() displays the messages. It suffices to pass to
* eina_log_print_cb_set() the function used to display the
* message. That function must be of type #Eina_Log_Print_Cb. As a
* custom data can be passed to that callback, powerful display
* messages can be displayed.
*
* It is suggested to not use __FILE__, __FUNCTION__ or __LINE__ when
* writing that callback, but when defining macros (like
* EINA_LOG_ERR() and other macros).
*
* Here is an example of custom callback, whose behavior can be
* changed at runtime:
*
* @code
* #include <stdlib.h>
* #include <stdio.h>
*
* #include <eina_log.h>
*
* #define log(fmt, ...) \
* eina_log_print(EINA_LOG_LEVEL_ERR, __FILE__, __FUNCTION__, __LINE__, fmt, ##__VA_ARGS__)
*
* typedef struct _Data Data;
*
* struct _Data
* {
* int to_stderr;
* };
*
* void print_cb(const Eina_Log_Domain *domain,
* Eina_Log_Level level,
* const char *file,
* const char *fnc,
* int line,
* const char *fmt,
* void *data,
* va_list args)
* {
* Data *d;
* FILE *output;
* char *str;
*
* d = (Data *)data;
* if (d->to_stderr)
* {
* output = stderr;
* str = "stderr";
* }
* else
* {
* output = stdout;
* str = "stdout";
* }
*
* fprintf(output, "%s:%s:%s (%d) %s: ",
* domain->domain_str, file, fnc, line, str);
* vfprintf(output, fmt, args);
* putc('\n', output);
* }
*
* void test(Data *data, int i)
* {
* if (i < 0)
* data->to_stderr = 0;
* else
* data->to_stderr = 1;
*
* log("log message...");
* }
*
* int main(void)
* {
* Data data;
*
* if (!eina_init())
* {
* printf("log during the initialization of Eina_Log module\n");
* return EXIT_FAILURE;
* }
*
* eina_log_print_cb_set(print_cb, &data);
*
* test(&data, -1);
* test(&data, 0);
*
* eina_shutdown();
*
* return EXIT_SUCCESS;
* }
* @endcode
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fnmatch.h>
#include <assert.h>
#ifndef _MSC_VER
# include <unistd.h>
#endif
#ifdef EFL_HAVE_POSIX_THREADS
# include <pthread.h>
#endif
#ifdef HAVE_EVIL
# include <Evil.h>
#endif
#include "eina_config.h"
#include "eina_private.h"
#include "eina_inlist.h"
/* undefs EINA_ARG_NONULL() so NULL checks are not compiled out! */
#include "eina_safety_checks.h"
#include "eina_log.h"
/* TODO
* + printing logs to stdout or stderr can be implemented
* using a queue, useful for multiple threads printing
* + add a wrapper for assert?
*/
/*============================================================================*
* Local *
*============================================================================*/
/**
* @cond LOCAL
*/
#define EINA_LOG_ENV_ABORT "EINA_LOG_ABORT"
#define EINA_LOG_ENV_ABORT_LEVEL "EINA_LOG_ABORT_LEVEL"
#define EINA_LOG_ENV_LEVEL "EINA_LOG_LEVEL"
#define EINA_LOG_ENV_LEVELS "EINA_LOG_LEVELS"
#define EINA_LOG_ENV_LEVELS_GLOB "EINA_LOG_LEVELS_GLOB"
#define EINA_LOG_ENV_COLOR_DISABLE "EINA_LOG_COLOR_DISABLE"
#define EINA_LOG_ENV_FILE_DISABLE "EINA_LOG_FILE_DISABLE"
#define EINA_LOG_ENV_FUNCTION_DISABLE "EINA_LOG_FUNCTION_DISABLE"
// Structure for storing domain level settings passed from the command line
// that will be matched with application-defined domains.
typedef struct _Eina_Log_Domain_Level_Pending Eina_Log_Domain_Level_Pending;
struct _Eina_Log_Domain_Level_Pending
{
EINA_INLIST;
unsigned int level;
size_t namelen;
char name[];
};
/*
* List of levels for domains set by the user before the domains are registered,
* updates the domain levels on the first log and clears itself.
*/
static Eina_Inlist *_pending_list = NULL;
static Eina_Inlist *_glob_list = NULL;
// Disable color flag (can be changed through the env var
// EINA_LOG_ENV_COLOR_DISABLE).
static Eina_Bool _disable_color = EINA_FALSE;
static Eina_Bool _disable_file = EINA_FALSE;
static Eina_Bool _disable_function = EINA_FALSE;
static Eina_Bool _abort_on_critical = EINA_FALSE;
static int _abort_level_on_critical = EINA_LOG_LEVEL_CRITICAL;
#ifdef EFL_HAVE_THREADS
static Eina_Bool _threads_enabled = EINA_FALSE;
# ifdef EFL_HAVE_POSIX_THREADS
typedef pthread_t Thread;
static pthread_t _main_thread;
# define SELF() pthread_self()
# define IS_MAIN(t) pthread_equal(t, _main_thread)
# define IS_OTHER(t) EINA_UNLIKELY(!IS_MAIN(t))
# define CHECK_MAIN(...) \
do { \
if (!IS_MAIN(pthread_self())) { \
fprintf(stderr, \
"ERR: not main thread! current=%lu, main=%lu\n", \
pthread_self(), _main_thread); \
return __VA_ARGS__; \
} \
} while (0)
# ifdef EFL_HAVE_POSIX_THREADS_SPINLOCK
static pthread_spinlock_t _log_lock;
# define LOG_LOCK() \
if(_threads_enabled) \
do { \
if (0) { \
fprintf(stderr, "+++LOG LOG_LOCKED! [%s, %lu]\n", \
__FUNCTION__, pthread_self()); } \
if (EINA_UNLIKELY(_threads_enabled)) { \
pthread_spin_lock(&_log_lock); } \
} while (0)
# define LOG_UNLOCK() \
if(_threads_enabled) \
do { \
if (EINA_UNLIKELY(_threads_enabled)) { \
pthread_spin_unlock(&_log_lock); } \
if (0) { \
fprintf(stderr, \
"---LOG LOG_UNLOCKED! [%s, %lu]\n", \
__FUNCTION__, pthread_self()); } \
} while (0)
# define INIT() pthread_spin_init(&_log_lock, PTHREAD_PROCESS_PRIVATE)
# define SHUTDOWN() pthread_spin_destroy(&_log_lock)
# else /* ! EFL_HAVE_POSIX_THREADS_SPINLOCK */
static pthread_mutex_t _log_mutex = PTHREAD_MUTEX_INITIALIZER;
# define LOG_LOCK() if(_threads_enabled) {pthread_mutex_lock(&_log_mutex); }
# define LOG_UNLOCK() if(_threads_enabled) {pthread_mutex_unlock(&_log_mutex); }
# define INIT() (1)
# define SHUTDOWN() do {} while (0)
# endif /* ! EFL_HAVE_POSIX_THREADS_SPINLOCK */
# else /* EFL_HAVE_WIN32_THREADS */
typedef DWORD Thread;
static DWORD _main_thread;
# define SELF() GetCurrentThreadId()
# define IS_MAIN(t) (t == _main_thread)
# define IS_OTHER(t) EINA_UNLIKELY(!IS_MAIN(t))
# define CHECK_MAIN(...) \
do { \
if (!IS_MAIN(GetCurrentThreadId())) { \
fprintf(stderr, \
"ERR: not main thread! current=%lu, main=%lu\n", \
GetCurrentThreadId(), _main_thread); \
return __VA_ARGS__; \
} \
} while (0)
static HANDLE _log_mutex = NULL;
# define LOG_LOCK() if(_threads_enabled) WaitForSingleObject(_log_mutex, \
INFINITE)
# define LOG_UNLOCK() if(_threads_enabled) ReleaseMutex(_log_mutex)
# define INIT() ((_log_mutex = CreateMutex(NULL, FALSE, NULL)) ? 1 : 0)
# define SHUTDOWN() if (_log_mutex) CloseHandle(_log_mutex)
# endif /* EFL_HAVE_WIN32_THREADS */
#else /* ! EFL_HAVE_THREADS */
# define LOG_LOCK() do {} while (0)
# define LOG_UNLOCK() do {} while (0)
# define IS_MAIN(t) (1)
# define IS_OTHER(t) (0)
# define CHECK_MAIN(...) do {} while (0)
# define INIT() (1)
# define SHUTDOWN() do {} while (0)
#endif /* ! EFL_HAVE_THREADS */
// List of domains registered
static Eina_Log_Domain *_log_domains = NULL;
static unsigned int _log_domains_count = 0;
static size_t _log_domains_allocated = 0;
// Default function for printing on domains
static Eina_Log_Print_Cb _print_cb = eina_log_print_cb_stderr;
static void *_print_cb_data = NULL;
#ifdef DEBUG
static Eina_Log_Level _log_level = EINA_LOG_LEVEL_DBG;
#elif DEBUG_CRITICAL
static Eina_Log_Level _log_level = EINA_LOG_LEVEL_CRITICAL;
#else
static Eina_Log_Level _log_level = EINA_LOG_LEVEL_ERR;
#endif
/* NOTE: if you change this, also change:
* eina_log_print_level_name_get()
* eina_log_print_level_name_color_get()
*/
static const char *_names[] = {
"CRI",
"ERR",
"WRN",
"INF",
"DBG",
};
#ifdef _WIN32
static int
eina_log_win32_color_get(const char *domain_str)
{
char *str;
char *tmp;
char *tmp2;
int code = -1;
int lighted = 0;
int ret = 0;
str = strdup(domain_str);
if (!str)
return 0;
/* this should not append */
if (str[0] != '\033')
return 0;
/* we skip the first char and the [ */
tmp = tmp2 = str + 2;
while (*tmp != 'm')
{
if (*tmp == ';')
{
*tmp = '\0';
code = atol(tmp2);
tmp++;
tmp2 = tmp;
}
tmp++;
}
*tmp = '\0';
if (code < 0)
code = atol(tmp2);
else
lighted = atol(tmp2);
free(str);
if (code < lighted)
{
int c;
c = code;
code = lighted;
lighted = c;
}
if (lighted)
ret = FOREGROUND_INTENSITY;
if (code == 31)
ret |= FOREGROUND_RED;
else if (code == 32)
ret |= FOREGROUND_GREEN;
else if (code == 33)
ret |= FOREGROUND_RED | FOREGROUND_GREEN;
else if (code == 34)
ret |= FOREGROUND_BLUE;
else if (code == 36)
ret |= FOREGROUND_GREEN | FOREGROUND_BLUE;
else if (code == 37)
ret |= FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
return ret;
}
#endif
static inline void
eina_log_print_level_name_get(int level, const char **p_name)
{
static char buf[4];
/* NOTE: if you change this, also change
* eina_log_print_level_name_color_get()
* eina_log_level_name_get() (at eina_inline_log.x)
*/
if (EINA_UNLIKELY(level < 0))
{
snprintf(buf, sizeof(buf), "%03d", level);
*p_name = buf;
}
else if (EINA_UNLIKELY(level >= EINA_LOG_LEVELS))
{
snprintf(buf, sizeof(buf), "%03d", level);
*p_name = buf;
}
else
*p_name = _names[level];
}
#ifdef _WIN32
static inline void
eina_log_print_level_name_color_get(int level,
const char **p_name,
int *p_color)
{
static char buf[4];
/* NOTE: if you change this, also change:
* eina_log_print_level_name_get()
*/
if (EINA_UNLIKELY(level < 0))
{
snprintf(buf, sizeof(buf), "%03d", level);
*p_name = buf;
}
else if (EINA_UNLIKELY(level >= EINA_LOG_LEVELS))
{
snprintf(buf, sizeof(buf), "%03d", level);
*p_name = buf;
}
else
*p_name = _names[level];
*p_color = eina_log_win32_color_get(eina_log_level_color_get(level));
}
#else
static inline void
eina_log_print_level_name_color_get(int level,
const char **p_name,
const char **p_color)
{
static char buf[4];
/* NOTE: if you change this, also change:
* eina_log_print_level_name_get()
*/
if (EINA_UNLIKELY(level < 0))
{
snprintf(buf, sizeof(buf), "%03d", level);
*p_name = buf;
}
else if (EINA_UNLIKELY(level >= EINA_LOG_LEVELS))
{
snprintf(buf, sizeof(buf), "%03d", level);
*p_name = buf;
}
else
*p_name = _names[level];
*p_color = eina_log_level_color_get(level);
}
#endif
#define DECLARE_LEVEL_NAME(level) const char *name; \
eina_log_print_level_name_get(level, &name)
#ifdef _WIN32
# define DECLARE_LEVEL_NAME_COLOR(level) const char *name; int color; \
eina_log_print_level_name_color_get(level, &name, &color)
#else
# define DECLARE_LEVEL_NAME_COLOR(level) const char *name, *color; \
eina_log_print_level_name_color_get(level, &name, &color)
#endif
/** No threads, No color */
static void
eina_log_print_prefix_NOthreads_NOcolor_file_func(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file,
const char *fnc,
int line)
{
DECLARE_LEVEL_NAME(level);
fprintf(fp, "%s:%s %s:%d %s() ", name, d->domain_str, file, line, fnc);
}
static void
eina_log_print_prefix_NOthreads_NOcolor_NOfile_func(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file __UNUSED__,
const char *fnc,
int line __UNUSED__)
{
DECLARE_LEVEL_NAME(level);
fprintf(fp, "%s:%s %s() ", name, d->domain_str, fnc);
}
static void
eina_log_print_prefix_NOthreads_NOcolor_file_NOfunc(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file,
const char *fnc __UNUSED__,
int line)
{
DECLARE_LEVEL_NAME(level);
fprintf(fp, "%s:%s %s:%d ", name, d->domain_str, file, line);
}
/* No threads, color */
static void
eina_log_print_prefix_NOthreads_color_file_func(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file,
const char *fnc,
int line)
{
DECLARE_LEVEL_NAME_COLOR(level);
#ifdef _WIN32
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
color);
fprintf(fp, "%s", name);
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, ":");
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
eina_log_win32_color_get(d->domain_str));
fprintf(fp, "%s", d->name);
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, " %s:%d ", file, line);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_INTENSITY | FOREGROUND_RED |
FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, "%s()", fnc);
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, " ");
#else
fprintf(fp, "%s%s" EINA_COLOR_RESET ":%s %s:%d "
EINA_COLOR_HIGH "%s()" EINA_COLOR_RESET " ",
color, name, d->domain_str, file, line, fnc);
#endif
}
static void
eina_log_print_prefix_NOthreads_color_NOfile_func(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file __UNUSED__,
const char *fnc,
int line __UNUSED__)
{
DECLARE_LEVEL_NAME_COLOR(level);
#ifdef _WIN32
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
color);
fprintf(fp, "%s", name);
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, ":");
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
eina_log_win32_color_get(d->domain_str));
fprintf(fp, "%s", d->name);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_INTENSITY | FOREGROUND_RED |
FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, "%s()", fnc);
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, " ");
#else
fprintf(fp, "%s%s" EINA_COLOR_RESET ":%s "
EINA_COLOR_HIGH "%s()" EINA_COLOR_RESET " ",
color, name, d->domain_str, fnc);
#endif
}
static void
eina_log_print_prefix_NOthreads_color_file_NOfunc(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file,
const char *fnc __UNUSED__,
int line)
{
DECLARE_LEVEL_NAME_COLOR(level);
#ifdef _WIN32
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
color);
fprintf(fp, "%s", name);
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, ":");
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
eina_log_win32_color_get(d->domain_str));
fprintf(fp, "%s", d->name);
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, " %s:%d ", file, line);
#else
fprintf(fp, "%s%s" EINA_COLOR_RESET ":%s %s:%d ",
color, name, d->domain_str, file, line);
#endif
}
/** threads, No color */
#ifdef EFL_HAVE_THREADS
static void
eina_log_print_prefix_threads_NOcolor_file_func(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file,
const char *fnc,
int line)
{
Thread cur;
DECLARE_LEVEL_NAME(level);
cur = SELF();
if (IS_OTHER(cur))
{
fprintf(fp, "%s:%s[T:%lu] %s:%d %s() ",
name, d->domain_str, cur, file, line, fnc);
return;
}
fprintf(fp, "%s:%s %s:%d %s() ", name, d->domain_str, file, line, fnc);
}
static void
eina_log_print_prefix_threads_NOcolor_NOfile_func(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file __UNUSED__,
const char *fnc,
int line __UNUSED__)
{
Thread cur;
DECLARE_LEVEL_NAME(level);
cur = SELF();
if (IS_OTHER(cur))
{
fprintf(fp, "%s:%s[T:%lu] %s() ",
name, d->domain_str, cur, fnc);
return;
}
fprintf(fp, "%s:%s %s() ", name, d->domain_str, fnc);
}
static void
eina_log_print_prefix_threads_NOcolor_file_NOfunc(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file,
const char *fnc __UNUSED__,
int line)
{
Thread cur;
DECLARE_LEVEL_NAME(level);
cur = SELF();
if (IS_OTHER(cur))
{
fprintf(fp, "%s:%s[T:%lu] %s:%d ",
name, d->domain_str, cur, file, line);
return;
}
fprintf(fp, "%s:%s %s:%d ", name, d->domain_str, file, line);
}
/* threads, color */
static void
eina_log_print_prefix_threads_color_file_func(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file,
const char *fnc,
int line)
{
Thread cur;
DECLARE_LEVEL_NAME_COLOR(level);
cur = SELF();
if (IS_OTHER(cur))
{
# ifdef _WIN32
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
color);
fprintf(fp, "%s", name);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE);
fprintf(fp, ":");
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
eina_log_win32_color_get(d->domain_str));
fprintf(fp, "%s[T:", d->name);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE);
fprintf(fp, "[T:");
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, "%lu", (unsigned long)cur);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE);
fprintf(fp, "] %s:%d ", file, line);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_INTENSITY | FOREGROUND_RED |
FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, "%s()", fnc);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE);
fprintf(fp, " ");
# else
fprintf(fp, "%s%s" EINA_COLOR_RESET ":%s[T:"
EINA_COLOR_ORANGE "%lu" EINA_COLOR_RESET "] %s:%d "
EINA_COLOR_HIGH "%s()" EINA_COLOR_RESET " ",
color, name, d->domain_str, cur, file, line, fnc);
# endif
return;
}
# ifdef _WIN32
eina_log_print_prefix_NOthreads_color_file_func(fp,
d,
level,
file,
fnc,
line);
# else
fprintf(fp, "%s%s" EINA_COLOR_RESET ":%s %s:%d "
EINA_COLOR_HIGH "%s()" EINA_COLOR_RESET " ",
color, name, d->domain_str, file, line, fnc);
# endif
}
static void
eina_log_print_prefix_threads_color_NOfile_func(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file __UNUSED__,
const char *fnc,
int line __UNUSED__)
{
Thread cur;
DECLARE_LEVEL_NAME_COLOR(level);
cur = SELF();
if (IS_OTHER(cur))
{
# ifdef _WIN32
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
color);
fprintf(fp, "%s", name);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE);
fprintf(fp, ":");
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
eina_log_win32_color_get(d->domain_str));
fprintf(fp, "%s[T:", d->name);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE);
fprintf(fp, "[T:");
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, "%lu", (unsigned long)cur);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_INTENSITY | FOREGROUND_RED |
FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, "%s()", fnc);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE);
fprintf(fp, " ");
# else
fprintf(fp, "%s%s" EINA_COLOR_RESET ":%s[T:"
EINA_COLOR_ORANGE "%lu" EINA_COLOR_RESET "] "
EINA_COLOR_HIGH "%s()" EINA_COLOR_RESET " ",
color, name, d->domain_str, cur, fnc);
# endif
return;
}
# ifdef _WIN32
eina_log_print_prefix_NOthreads_color_NOfile_func(fp,
d,
level,
file,
fnc,
line);
# else
fprintf(fp, "%s%s" EINA_COLOR_RESET ":%s "
EINA_COLOR_HIGH "%s()" EINA_COLOR_RESET " ",
color, name, d->domain_str, fnc);
# endif
}
static void
eina_log_print_prefix_threads_color_file_NOfunc(FILE *fp,
const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file,
const char *fnc __UNUSED__,
int line)
{
Thread cur;
DECLARE_LEVEL_NAME_COLOR(level);
cur = SELF();
if (IS_OTHER(cur))
{
# ifdef _WIN32
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
color);
fprintf(fp, "%s", name);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE);
fprintf(fp, ":");
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
eina_log_win32_color_get(d->domain_str));
fprintf(fp, "%s[T:", d->name);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE);
fprintf(fp, "[T:");
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
FOREGROUND_GREEN | FOREGROUND_BLUE);
fprintf(fp, "%lu", (unsigned long)cur);
SetConsoleTextAttribute(GetStdHandle(
STD_OUTPUT_HANDLE),
FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE);
fprintf(fp, "] %s:%d ", file, line);
# else
fprintf(fp, "%s%s" EINA_COLOR_RESET ":%s[T:"
EINA_COLOR_ORANGE "%lu" EINA_COLOR_RESET "] %s:%d ",
color, name, d->domain_str, cur, file, line);
# endif
return;
}
# ifdef _WIN32
eina_log_print_prefix_NOthreads_color_file_NOfunc(fp,
d,
level,
file,
fnc,
line);
# else
fprintf(fp, "%s%s" EINA_COLOR_RESET ":%s %s:%d ",
color, name, d->domain_str, file, line);
# endif
}
#endif /* EFL_HAVE_THREADS */
static void (*_eina_log_print_prefix)(FILE *fp, const Eina_Log_Domain *d,
Eina_Log_Level level, const char *file,
const char *fnc,
int line) =
eina_log_print_prefix_NOthreads_color_file_func;
static inline void
eina_log_print_prefix_update(void)
{
if (_disable_file && _disable_function)
{
fprintf(stderr, "ERROR: cannot have " EINA_LOG_ENV_FILE_DISABLE " and "
EINA_LOG_ENV_FUNCTION_DISABLE " set at the same time, will "
"just disable function.\n");
_disable_file = 0;
}
#define S(NOthread, NOcolor, NOfile, NOfunc) \
_eina_log_print_prefix = \
eina_log_print_prefix_ ## NOthread ## threads_ ## NOcolor ## color_ ## \
NOfile \
## file_ ## NOfunc ## func
#ifdef EFL_HAVE_THREADS
if (_threads_enabled)
{
if (_disable_color)
{
if (_disable_file)
S(,NO,NO,);
else if (_disable_function)
S(,NO,,NO);
else
S(,NO,,);
}
else
{
if (_disable_file)
S(,,NO,);
else if (_disable_function)
S(,,,NO);
else
S(,,,);
}
return;
}
#endif
if (_disable_color)
{
if (_disable_file)
S(NO,NO,NO,);
else if (_disable_function)
S(NO,NO,,NO);
else
S(NO,NO,,);
}
else
{
if (_disable_file)
S(NO,,NO,);
else if (_disable_function)
S(NO,,,NO);
else
S(NO,,,);
}
#undef S
}
/*
* Creates a colored domain name string.
*/
static const char *
eina_log_domain_str_get(const char *name, const char *color)
{
const char *d;
if (color)
{
size_t name_len;
size_t color_len;
name_len = strlen(name);
color_len = strlen(color);
d =
malloc(sizeof(char) *
(color_len + name_len + strlen(EINA_COLOR_RESET) + 1));
if (!d)
return NULL;
memcpy((char *)d, color, color_len);
memcpy((char *)(d + color_len), name, name_len);
memcpy((char *)(d + color_len + name_len), EINA_COLOR_RESET,
strlen(EINA_COLOR_RESET));
((char *)d)[color_len + name_len + strlen(EINA_COLOR_RESET)] = '\0';
}
else
d = strdup(name);
return d;
}
/*
* Setups a new logging domain to the name and color specified. Note that this
* constructor acts upon an pre-allocated object.
*/
static Eina_Log_Domain *
eina_log_domain_new(Eina_Log_Domain *d, const char *name, const char *color)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(d, NULL);
EINA_SAFETY_ON_NULL_RETURN_VAL(name, NULL);
d->level = EINA_LOG_LEVEL_UNKNOWN;
d->deleted = EINA_FALSE;
if (name)
{
if ((color) && (!_disable_color))
d->domain_str = eina_log_domain_str_get(name, color);
else
d->domain_str = eina_log_domain_str_get(name, NULL);
d->name = strdup(name);
d->namelen = strlen(name);
}
else
{
d->domain_str = NULL;
d->name = NULL;
d->namelen = 0;
}
return d;
}
/*
* Frees internal strings of a log domain, keeping the log domain itself as a
* slot for next domain registers.
*/
static void
eina_log_domain_free(Eina_Log_Domain *d)
{
EINA_SAFETY_ON_NULL_RETURN(d);
if (d->domain_str)
free((char *)d->domain_str);
if (d->name)
free((char *)d->name);
}
/*
* Parses domain levels passed through the env var.
*/
static void
eina_log_domain_parse_pendings(void)
{
const char *start;
if (!(start = getenv(EINA_LOG_ENV_LEVELS)))
return;
// name1:level1,name2:level2,name3:level3,...
while (1)
{
Eina_Log_Domain_Level_Pending *p;
char *end = NULL;
char *tmp = NULL;
long int level;
end = strchr(start, ':');
if (!end)
break;
// Parse level, keep going if failed
level = strtol((char *)(end + 1), &tmp, 10);
if (tmp == (end + 1))
goto parse_end;
// Parse name
p = malloc(sizeof(Eina_Log_Domain_Level_Pending) + end - start + 1);
if (!p)
break;
p->namelen = end - start;
memcpy((char *)p->name, start, end - start);
((char *)p->name)[end - start] = '\0';
p->level = level;
_pending_list = eina_inlist_append(_pending_list, EINA_INLIST_GET(p));
parse_end:
start = strchr(tmp, ',');
if (start)
start++;
else
break;
}
}
static void
eina_log_domain_parse_pending_globs(void)
{
const char *start;
if (!(start = getenv(EINA_LOG_ENV_LEVELS_GLOB)))
return;
// name1:level1,name2:level2,name3:level3,...
while (1)
{
Eina_Log_Domain_Level_Pending *p;
char *end = NULL;
char *tmp = NULL;
long int level;
end = strchr(start, ':');
if (!end)
break;
// Parse level, keep going if failed
level = strtol((char *)(end + 1), &tmp, 10);
if (tmp == (end + 1))
goto parse_end;
// Parse name
p = malloc(sizeof(Eina_Log_Domain_Level_Pending) + end - start + 1);
if (!p)
break;
p->namelen = 0; /* not that useful */
memcpy((char *)p->name, start, end - start);
((char *)p->name)[end - start] = '\0';
p->level = level;
_glob_list = eina_inlist_append(_glob_list, EINA_INLIST_GET(p));
parse_end:
start = strchr(tmp, ',');
if (start)
start++;
else
break;
}
}
static inline int
eina_log_domain_register_unlocked(const char *name, const char *color)
{
Eina_Log_Domain_Level_Pending *pending = NULL;
size_t namelen;
unsigned int i;
for (i = 0; i < _log_domains_count; i++)
{
if (_log_domains[i].deleted)
{
// Found a flagged slot, free domain_str and replace slot
eina_log_domain_new(&_log_domains[i], name, color);
goto finish_register;
}
}
if (_log_domains_count >= _log_domains_allocated)
{
Eina_Log_Domain *tmp;
size_t size;
if (!_log_domains)
// special case for init, eina itself will allocate a dozen of domains
size = 24;
else
// grow 8 buckets to minimize reallocs
size = _log_domains_allocated + 8;
tmp = realloc(_log_domains, sizeof(Eina_Log_Domain) * size);
if (tmp)
{
// Success!
_log_domains = tmp;
_log_domains_allocated = size;
}
else
return -1;
}
// Use an allocated slot
eina_log_domain_new(&_log_domains[i], name, color);
_log_domains_count++;
finish_register:
namelen = _log_domains[i].namelen;
EINA_INLIST_FOREACH(_pending_list, pending)
{
if ((namelen == pending->namelen) && (strcmp(pending->name, name) == 0))
{
_log_domains[i].level = pending->level;
_pending_list =
eina_inlist_remove(_pending_list, EINA_INLIST_GET(pending));
free(pending);
break;
}
}
if (_log_domains[i].level == EINA_LOG_LEVEL_UNKNOWN)
{
EINA_INLIST_FOREACH(_glob_list, pending)
{
if (!fnmatch(pending->name, name, 0))
{
_log_domains[i].level = pending->level;
break;
}
}
}
// Check if level is still UNKNOWN, set it to global
if (_log_domains[i].level == EINA_LOG_LEVEL_UNKNOWN)
_log_domains[i].level = _log_level;
return i;
}
static inline Eina_Bool
eina_log_term_color_supported(const char *term)
{
const char *tail;
if (!term)
return EINA_FALSE;
tail = term + 1;
switch (term[0])
{
/* list of known to support color terminals,
* take from gentoo's portage.
*/
case 'x': /* xterm and xterm-color */
return ((strncmp(tail, "term", sizeof("term") - 1) == 0) &&
((tail[sizeof("term") - 1] == '\0') ||
(strcmp(tail + sizeof("term") - 1, "-color") == 0)));
case 'E': /* Eterm */
case 'a': /* aterm */
case 'k': /* kterm */
return (strcmp(tail, "term") == 0);
case 'r': /* xrvt or rxvt-unicode */
return ((strncmp(tail, "xvt", sizeof("xvt") - 1) == 0) &&
((tail[sizeof("xvt") - 1] == '\0') ||
(strcmp(tail + sizeof("xvt") - 1, "-unicode") == 0)));
case 's': /* screen */
return (strcmp(tail, "creen") == 0);
case 'g': /* gnome */
return (strcmp(tail, "nome") == 0);
case 'i': /* interix */
return (strcmp(tail, "nterix") == 0);
default:
return EINA_FALSE;
}
}
/**
* @endcond
*/
/*============================================================================*
* Global *
*============================================================================*/
/**
* @internal
* @brief Initialize the log module.
*
* @return #EINA_TRUE on success, #EINA_FALSE on failure.
*
* This function sets up the log module of Eina. It is called by
* eina_init().
*
* @see eina_init()
*
* @warning Not-MT: just call this function from main thread! The
* place where this function was called the first time is
* considered the main thread.
*/
Eina_Bool
eina_log_init(void)
{
const char *level, *tmp;
int color_disable;
assert((sizeof(_names) / sizeof(_names[0])) == EINA_LOG_LEVELS);
if ((tmp = getenv(EINA_LOG_ENV_COLOR_DISABLE)))
color_disable = atoi(tmp);
else
color_disable = -1;
/* Check if color is explicitly disabled */
if (color_disable == 1)
_disable_color = EINA_TRUE;
#ifndef _WIN32
/* color was not explicitly disabled or enabled, guess it */
else if (color_disable == -1)
{
if (!eina_log_term_color_supported(getenv("TERM")))
_disable_color = EINA_TRUE;
else
{
/* if not a terminal, but redirected to a file, disable color */
int fd;
if (_print_cb == eina_log_print_cb_stderr)
fd = STDERR_FILENO;
else if (_print_cb == eina_log_print_cb_stdout)
fd = STDOUT_FILENO;
else
fd = -1;
if ((fd >= 0) && (!isatty(fd)))
_disable_color = EINA_TRUE;
}
}
#endif
if ((tmp = getenv(EINA_LOG_ENV_FILE_DISABLE)) && (atoi(tmp) == 1))
_disable_file = EINA_TRUE;
if ((tmp = getenv(EINA_LOG_ENV_FUNCTION_DISABLE)) && (atoi(tmp) == 1))
_disable_function = EINA_TRUE;
if ((tmp = getenv(EINA_LOG_ENV_ABORT)) && (atoi(tmp) == 1))
_abort_on_critical = EINA_TRUE;
if ((tmp = getenv(EINA_LOG_ENV_ABORT_LEVEL)))
_abort_level_on_critical = atoi(tmp);
eina_log_print_prefix_update();
// Global log level
if ((level = getenv(EINA_LOG_ENV_LEVEL)))
_log_level = atoi(level);
// Register UNKNOWN domain, the default logger
EINA_LOG_DOMAIN_GLOBAL = eina_log_domain_register("", NULL);
if (EINA_LOG_DOMAIN_GLOBAL < 0)
{
fprintf(stderr, "Failed to create global logging domain.\n");
return EINA_FALSE;
}
// Parse pending domains passed through EINA_LOG_LEVELS_GLOB
eina_log_domain_parse_pending_globs();
// Parse pending domains passed through EINA_LOG_LEVELS
eina_log_domain_parse_pendings();
return EINA_TRUE;
}
/**
* @internal
* @brief Shut down the log module.
*
* @return #EINA_TRUE on success, #EINA_FALSE on failure.
*
* This function shuts down the log module set up by
* eina_log_init(). It is called by eina_shutdown().
*
* @see eina_shutdown()
*
* @warning Not-MT: just call this function from main thread! The
* place where eina_log_init() (eina_init()) was called the
* first time is considered the main thread.
*/
Eina_Bool
eina_log_shutdown(void)
{
Eina_Inlist *tmp;
while (_log_domains_count--)
{
if (_log_domains[_log_domains_count].deleted)
continue;
eina_log_domain_free(&_log_domains[_log_domains_count]);
}
free(_log_domains);
_log_domains = NULL;
_log_domains_count = 0;
_log_domains_allocated = 0;
while (_glob_list)
{
tmp = _glob_list;
_glob_list = _glob_list->next;
free(tmp);
}
while (_pending_list)
{
tmp = _pending_list;
_pending_list = _pending_list->next;
free(tmp);
}
return EINA_TRUE;
}
#ifdef EFL_HAVE_THREADS
/**
* @internal
* @brief Activate the log mutex.
*
* This function activate the mutex in the eina log module. It is called by
* eina_thread_init().
*
* @see eina_thread_init()
*/
void
eina_log_threads_init(void)
{
_main_thread = SELF();
if (INIT())
_threads_enabled = EINA_TRUE;
}
/**
* @internal
* @brief Shut down the log mutex.
*
* This function shuts down the mutex in the log module.
* It is called by eina_thread_shutdown().
*
* @see eina_thread_shutdown()
*/
void
eina_log_threads_shutdown(void)
{
CHECK_MAIN();
SHUTDOWN();
_threads_enabled = EINA_FALSE;
}
#endif
/*============================================================================*
* API *
*============================================================================*/
/**
* @addtogroup Eina_Log_Group Log
*
* @brief Full-featured logging system.
*
* Eina provides eina_log_print(), a standard function to manage all
* logging messages. This function may be called directly or using the
* helper macros such as EINA_LOG_DBG(), EINA_LOG_ERR() or those that
* take a specific domain as argument EINA_LOG_DOM_DBG(),
* EINA_LOG_DOM_ERR(). Internally, eina_log_print() will call the
* function defined with eina_log_print_cb_set(), that defaults to
* eina_log_print_cb_stderr(), but may be changed to do whatever you
* need, such as networking or syslog logging.
*
* The logging system is thread safe once initialized with
* eina_log_threads_enable(). The thread that calls this function
* first is considered "main thread" and other threads will have their
* thread id (pthread_self()) printed in the log message so it is easy
* to detect from where it is coming.
*
* Log domains is the Eina way to differentiate messages. There might
* be different domains to represent different modules, different
* feature-set, different categories and so on. Filtering can be
* applied to domain names by means of @c EINA_LOG_LEVELS environment
* variable or eina_log_domain_level_set().
*
* The different logging levels serve to customize the amount of
* debugging one want to take and may be used to automatically call
* abort() once some given level message is printed. This is
* controlled by environment variable @c EINA_LOG_ABORT and the level
* to be considered critical with @c EINA_LOG_ABORT_LEVEL. These can
* be changed with eina_log_abort_on_critical_set() and
* eina_log_abort_on_critical_level_set().
*
* The default maximum level to print is defined by environment
* variable @c EINA_LOG_LEVEL, but may be set per-domain with @c
* EINA_LOG_LEVELS. It will default to #EINA_LOG_ERR. This can be
* changed with eina_log_level_set().
*
* To use the log system Eina must be initialized with eina_init() and
* later shut down with eina_shutdown(). Here is a straightforward
* example:
*
* @code
* #include <stdlib.h>
* #include <stdio.h>
*
* #include <eina_log.h>
*
* void test_warn(void)
* {
* EINA_LOG_WARN("Here is a warning message");
* }
*
* int main(void)
* {
* if (!eina_init())
* {
* printf("log during the initialization of Eina_Log module\n");
* return EXIT_FAILURE;
* }
*
* test_warn();
*
* eina_shutdown();
*
* return EXIT_SUCCESS;
* }
* @endcode
*
* Compile this code with the following command:
*
* @code
* gcc -Wall -o test_Eina_Log test_eina.c `pkg-config --cflags --libs eina`
* @endcode
*
* Now execute the program with:
*
* @code
* EINA_LOG_LEVEL=2 ./test_eina_log
* @endcode
*
* You should see a message displayed in the terminal.
*
* For more information, you can look at the @ref tutorial_log_page.
*
* @{
*/
/**
* @cond LOCAL
*/
EAPI int EINA_LOG_DOMAIN_GLOBAL = 0;
/**
* @endcond
*/
/**
* Enable logging module to handle threads.
*
* There is no disable option on purpose, if it is enabled, there is
* no way back until you call the last eina_shutdown().
*
* There is no function to retrieve if threads are enabled as one is
* not supposed to know this from outside.
*
* After this call is executed at least once, if Eina was compiled
* with threads support then logging will lock around debug messages
* and threads that are not the main thread will have its identifier
* printed.
*
* The main thread is considered the thread where the first
* eina_init() was called.
*/
EAPI void
eina_log_threads_enable(void)
{
#ifdef EFL_HAVE_THREADS
_threads_enabled = 1;
eina_log_print_prefix_update();
#endif
}
/**
* Sets logging method to use.
*
* By default, eina_log_print_cb_stderr() is used.
*
* @note MT: safe to call from any thread.
*
* @note MT: given function @a cb will be called protected by mutex.
* This means you're safe from other calls but you should never
* call eina_log_print(), directly or indirectly.
*/
EAPI void
eina_log_print_cb_set(Eina_Log_Print_Cb cb, void *data)
{
LOG_LOCK();
_print_cb = cb;
_print_cb_data = data;
eina_log_print_prefix_update();
LOG_UNLOCK();
}
/**
* @brief Set the default log level.
*
* @param level The log level.
*
* This function sets the log level @p level. It is used in
* eina_log_print().
*
* @note this is initially set to envvar EINA_LOG_LEVEL by eina_init().
*
* @see eina_log_level_get()
*/
EAPI void
eina_log_level_set(int level)
{
_log_level = level;
if (EINA_LIKELY((EINA_LOG_DOMAIN_GLOBAL >= 0) &&
((unsigned int)EINA_LOG_DOMAIN_GLOBAL < _log_domains_count)))
_log_domains[EINA_LOG_DOMAIN_GLOBAL].level = level;
}
/**
* @brief Get the default log level.
*
* @return the log level that limits eina_log_print().
*
* @see eina_log_level_set()
*/
EAPI int
eina_log_level_get(void)
{
return _log_level;
}
/**
* Checks if current thread is the main thread.
*
* @return #EINA_TRUE if threads were enabled and the current thread
* is the one that called eina_log_threads_init(). If there is
* no thread support (compiled with --disable-pthreads) or
* they were not enabled, then #EINA_TRUE is also
* returned. The only case where #EINA_FALSE is returned is
* when threads were successfully enabled but the current
* thread is not the main (one that called
* eina_log_threads_init()).
*/
EAPI Eina_Bool
eina_log_main_thread_check(void)
{
#ifdef EFL_HAVE_THREADS
return ((!_threads_enabled) || IS_MAIN(SELF()));
#else
return EINA_TRUE;
#endif
}
/**
* @brief Set if color logging should be disabled.
*
* @param disabled if #EINA_TRUE, color logging should be disabled.
*
* @note this is initially set to envvar EINA_LOG_COLOR_DISABLE by eina_init().
*
* @see eina_log_color_disable_get()
*/
EAPI void
eina_log_color_disable_set(Eina_Bool disabled)
{
_disable_color = disabled;
}
/**
* @brief Get if color logging should be disabled.
*
* @return if #EINA_TRUE, color logging should be disabled.
*
* @see eina_log_color_disable_set()
*/
EAPI Eina_Bool
eina_log_color_disable_get(void)
{
return _disable_color;
}
/**
* @brief Set if originating file name logging should be disabled.
*
* @param disabled if #EINA_TRUE, file name logging should be disabled.
*
* @note this is initially set to envvar EINA_LOG_FILE_DISABLE by eina_init().
*
* @see eina_log_file_disable_get()
*/
EAPI void
eina_log_file_disable_set(Eina_Bool disabled)
{
_disable_file = disabled;
}
/**
* @brief Get if originating file name logging should be disabled.
*
* @return if #EINA_TRUE, file name logging should be disabled.
*
* @see eina_log_file_disable_set()
*/
EAPI Eina_Bool
eina_log_file_disable_get(void)
{
return _disable_file;
}
/**
* @brief Set if originating function name logging should be disabled.
*
* @param disabled if #EINA_TRUE, function name logging should be disabled.
*
* @note this is initially set to envvar EINA_LOG_FUNCTION_DISABLE by
* eina_init().
*
* @see eina_log_function_disable_get()
*/
EAPI void
eina_log_function_disable_set(Eina_Bool disabled)
{
_disable_function = disabled;
}
/**
* @brief Get if originating function name logging should be disabled.
*
* @return if #EINA_TRUE, function name logging should be disabled.
*
* @see eina_log_function_disable_set()
*/
EAPI Eina_Bool
eina_log_function_disable_get(void)
{
return _disable_function;
}
/**
* @brief Set if critical messages should abort the program.
*
* @param abort_on_critical if #EINA_TRUE, messages with level equal
* or smaller than eina_log_abort_on_critical_level_get() will
* abort the program.
*
* @note this is initially set to envvar EINA_LOG_ABORT by
* eina_init().
*
* @see eina_log_abort_on_critical_get()
* @see eina_log_abort_on_critical_level_set()
*/
EAPI void
eina_log_abort_on_critical_set(Eina_Bool abort_on_critical)
{
_abort_on_critical = abort_on_critical;
}
/**
* @brief Get if critical messages should abort the program.
*
* @return if #EINA_TRUE, any messages with level equal or smaller
* than eina_log_abort_on_critical_level_get() will abort the
* program.
*
* @see eina_log_abort_on_critical_set()
* @see eina_log_abort_on_critical_level_set()
*/
EAPI Eina_Bool
eina_log_abort_on_critical_get(void)
{
return _abort_on_critical;
}
/**
* @brief Set level that triggers abort if abort-on-critical is set.
*
* @param critical_level levels equal or smaller than the given value
* will trigger program abortion if
* eina_log_abort_on_critical_get() returns #EINA_TRUE.
*
* @note this is initially set to envvar EINA_LOG_ABORT_LEVEL by
* eina_init().
*
* @see eina_log_abort_on_critical_level_get()
* @see eina_log_abort_on_critical_get()
*/
EAPI void
eina_log_abort_on_critical_level_set(int critical_level)
{
_abort_level_on_critical = critical_level;
}
/**
* @brief Get level that triggers abort if abort-on-critical is set.
*
* @return critical level equal or smaller than value will trigger
* program abortion if eina_log_abort_on_critical_get() returns
* #EINA_TRUE.
*
* @see eina_log_abort_on_critical_level_set()
* @see eina_log_abort_on_critical_get()
*/
EAPI int
eina_log_abort_on_critical_level_get(void)
{
return _abort_level_on_critical;
}
/**
* @param name Domain name
* @param color Color of the domain name
*
* @return Domain index that will be used as the DOMAIN parameter on log
* macros. A negative return value means an log ocurred.
*
* @note MT: safe to call from any thread.
*/
EAPI int
eina_log_domain_register(const char *name, const char *color)
{
int r;
EINA_SAFETY_ON_NULL_RETURN_VAL(name, -1);
LOG_LOCK();
r = eina_log_domain_register_unlocked(name, color);
LOG_UNLOCK();
return r;
}
static inline void
eina_log_domain_unregister_unlocked(int domain)
{
Eina_Log_Domain *d;
if ((unsigned int)domain >= _log_domains_count)
return;
d = &_log_domains[domain];
eina_log_domain_free(d);
d->deleted = 1;
}
/**
* Forget about a logging domain registered by eina_log_domain_register()
*
* @param domain domain identifier as reported by eina_log_domain_register(),
* must be >= 0.
*
* @note MT: safe to call from any thread.
*/
EAPI void
eina_log_domain_unregister(int domain)
{
EINA_SAFETY_ON_FALSE_RETURN(domain >= 0);
LOG_LOCK();
eina_log_domain_unregister_unlocked(domain);
LOG_UNLOCK();
}
/**
* Set the domain level given its name.
*
* This call has the same effect as setting
* EINA_LOG_LEVELS=<domain_name>:<level>
*
* @param domain_name domain name to change the level. It may be of a
* still not registered domain. If the domain is not registered
* yet, it will be saved as a pending set and applied upon
* registration.
* @param level level to use to limit eina_log_print() for given domain.
*/
EAPI void
eina_log_domain_level_set(const char *domain_name, int level)
{
Eina_Log_Domain_Level_Pending *pending;
size_t namelen;
unsigned int i;
EINA_SAFETY_ON_NULL_RETURN(domain_name);
namelen = strlen(domain_name);
for (i = 0; i < _log_domains_count; i++)
{
if (_log_domains[i].deleted)
continue;
if ((namelen != _log_domains[i].namelen) ||
(strcmp(_log_domains[i].name, domain_name) != 0))
continue;
_log_domains[i].level = level;
return;
}
EINA_INLIST_FOREACH(_pending_list, pending)
{
if ((namelen == pending->namelen) &&
(strcmp(pending->name, domain_name) == 0))
{
pending->level = level;
return;
}
}
pending = malloc(sizeof(Eina_Log_Domain_Level_Pending) + namelen + 1);
if (!pending)
return;
pending->level = level;
pending->namelen = namelen;
memcpy(pending->name, domain_name, namelen + 1);
_pending_list = eina_inlist_append(_pending_list, EINA_INLIST_GET(pending));
}
/**
* Get the domain level given its name.
*
* @param domain_name domain name to retrieve the level. It may be of
* a still not registered domain. If the domain is not
* registered yet, but there is a pending value, either from
* eina_log_domain_level_set(),EINA_LOG_LEVELS environment
* variable or from EINA_LOG_LEVELS_GLOB, these are
* returned. If nothing else was found, then the global/default
* level (eina_log_level_get()) is returned.
*
* @return level to use to limit eina_log_print() for given
* domain. On error (@p domain_name == NULL),
* EINA_LOG_LEVEL_UNKNOWN is returned.
*
* @see eina_log_domain_level_set()
* @see eina_log_domain_registered_level_get()
*/
EAPI int
eina_log_domain_level_get(const char *domain_name)
{
Eina_Log_Domain_Level_Pending *pending;
size_t namelen;
unsigned int i;
EINA_SAFETY_ON_NULL_RETURN_VAL(domain_name, EINA_LOG_LEVEL_UNKNOWN);
namelen = strlen(domain_name);
for (i = 0; i < _log_domains_count; i++)
{
if (_log_domains[i].deleted)
continue;
if ((namelen != _log_domains[i].namelen) ||
(strcmp(_log_domains[i].name, domain_name) != 0))
continue;
return _log_domains[i].level;
}
EINA_INLIST_FOREACH(_pending_list, pending)
{
if ((namelen == pending->namelen) &&
(strcmp(pending->name, domain_name) == 0))
return pending->level;
}
EINA_INLIST_FOREACH(_glob_list, pending)
{
if (!fnmatch(pending->name, domain_name, 0))
return pending->level;
}
return _log_level;
}
/**
* Get the domain level given its identifier.
*
* @param domain identifier, so it must be previously registered with
* eina_log_domain_register(). It's a much faster version of
* eina_log_domain_level_get(), but relies on domain being
* present.
*
* @return level to use to limit eina_log_print() for given domain. On
* error EINA_LOG_LEVEL_UNKNOWN is returned.
*/
EAPI int
eina_log_domain_registered_level_get(int domain)
{
EINA_SAFETY_ON_FALSE_RETURN_VAL(domain >= 0, EINA_LOG_LEVEL_UNKNOWN);
EINA_SAFETY_ON_FALSE_RETURN_VAL((unsigned int)domain < _log_domains_count,
EINA_LOG_LEVEL_UNKNOWN);
EINA_SAFETY_ON_TRUE_RETURN_VAL(_log_domains[domain].deleted,
EINA_LOG_LEVEL_UNKNOWN);
return _log_domains[domain].level;
}
/**
* Default logging method, this will output to standard error stream.
*
* This method will colorize output based on domain provided color and
* message logging level.
*
* To disable color, set environment variable
* EINA_LOG_COLOR_DISABLE=1. To enable color, even if directing to a
* file or when using a non-supported color terminal, use
* EINA_LOG_COLOR_DISABLE=0. If EINA_LOG_COLOR_DISABLE is unset (or
* -1), then Eina will disable color if terminal ($TERM) is
* unsupported or if redirecting to a file.
. Similarly, to disable file and line
* information, set EINA_LOG_FILE_DISABLE=1 or
* EINA_LOG_FUNCTION_DISABLE=1 to avoid function name in output. It is
* not acceptable to have both EINA_LOG_FILE_DISABLE and
* EINA_LOG_FUNCTION_DISABLE at the same time, in this case just
* EINA_LOG_FUNCTION_DISABLE will be considered and file information
* will be printed anyways.
*
* @note MT: if threads are enabled, this function is called within locks.
* @note MT: Threads different from main thread will have thread id
* appended to domain name.
*/
EAPI void
eina_log_print_cb_stderr(const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file,
const char *fnc,
int line,
const char *fmt,
__UNUSED__ void *data,
va_list args)
{
_eina_log_print_prefix(stderr, d, level, file, fnc, line);
vfprintf(stderr, fmt, args);
putc('\n', stderr);
}
/**
* Alternative logging method, this will output to standard output stream.
*
* This method will colorize output based on domain provided color and
* message logging level. To disable color, set environment variable
* EINA_LOG_COLOR_DISABLE=1. Similarly, to disable file and line
* information, set EINA_LOG_FILE_DISABLE=1 or
* EINA_LOG_FUNCTION_DISABLE=1 to avoid function name in output. It is
* not acceptable to have both EINA_LOG_FILE_DISABLE and
* EINA_LOG_FUNCTION_DISABLE at the same time, in this case just
* EINA_LOG_FUNCTION_DISABLE will be considered and file information
* will be printed anyways.
*
* @note MT: if threads are enabled, this function is called within locks.
* @note MT: Threads different from main thread will have thread id
* appended to domain name.
*/
EAPI void
eina_log_print_cb_stdout(const Eina_Log_Domain *d,
Eina_Log_Level level,
const char *file,
const char *fnc,
int line,
const char *fmt,
__UNUSED__ void *data,
va_list args)
{
_eina_log_print_prefix(stdout, d, level, file, fnc, line);
vprintf(fmt, args);
putchar('\n');
}
/**
* Alternative logging method, this will output to given file stream.
*
* This method will never output color.
*
* @note MT: if threads are enabled, this function is called within locks.
* @note MT: Threads different from main thread will have thread id
* appended to domain name.
*/
EAPI void
eina_log_print_cb_file(const Eina_Log_Domain *d,
__UNUSED__ Eina_Log_Level level,
const char *file,
const char *fnc,
int line,
const char *fmt,
void *data,
va_list args)
{
FILE *f = data;
#ifdef EFL_HAVE_THREADS
if (_threads_enabled)
{
Thread cur;
cur = SELF();
if (IS_OTHER(cur))
{
fprintf(f, "%s[T:%lu] %s:%d %s() ", d->name, cur, file, line, fnc);
goto end;
}
}
#endif
fprintf(f, "%s %s:%d %s() ", d->name, file, line, fnc);
#ifdef EFL_HAVE_THREADS
end:
#endif
vfprintf(f, fmt, args);
putc('\n', f);
}
static inline void
eina_log_print_unlocked(int domain,
Eina_Log_Level level,
const char *file,
const char *fnc,
int line,
const char *fmt,
va_list args)
{
Eina_Log_Domain *d;
#ifdef EINA_SAFETY_CHECKS
if (EINA_UNLIKELY((unsigned int)domain >= _log_domains_count) ||
EINA_UNLIKELY(domain < 0))
{
if (file && fnc && fmt)
fprintf(
stderr,
"CRI: %s:%d %s() eina_log_print() unknown domain %d, original message format '%s'\n",
file,
line,
fnc,
domain,
fmt);
else
fprintf(
stderr,
"CRI: eina_log_print() unknown domain %d, original message format '%s'\n",
domain,
fmt ? fmt : "");
if (_abort_on_critical)
abort();
return;
}
#endif
d = _log_domains + domain;
#ifdef EINA_SAFETY_CHECKS
if (EINA_UNLIKELY(d->deleted))
{
fprintf(stderr,
"ERR: eina_log_print() domain %d is deleted\n",
domain);
return;
}
#endif
if (level > d->level)
return;
#ifdef _WIN32
{
char *wfmt;
char *tmp;
wfmt = strdup(fmt);
if (!wfmt)
{
fprintf(stderr, "ERR: %s: can not allocate memory\n", __FUNCTION__);
return;
}
tmp = wfmt;
while (strchr(tmp, "%"))
{
tmp++;
if (*tmp == 'z')
*tmp = 'I';
}
_print_cb(d, level, file, fnc, line, wfmt, _print_cb_data, args);
free(wfmt);
}
#else
_print_cb(d, level, file, fnc, line, fmt, _print_cb_data, args);
#endif
if (EINA_UNLIKELY(_abort_on_critical) &&
EINA_UNLIKELY(level <= _abort_level_on_critical))
abort();
}
/**
* Print out log message using given domain and level.
*
* @note Usually you'll not use this function directly but the helper
* macros EINA_LOG(), EINA_LOG_DOM_CRIT(), EINA_LOG_CRIT() and
* so on. See eina_log.h
*
* @param domain logging domain to use or @c EINA_LOG_DOMAIN_GLOBAL if
* you registered none. It is recommended that modules and
* applications have their own logging domain.
* @param level message level, those with level greater than user
* specified value (eina_log_level_set() or environment
* variables EINA_LOG_LEVEL, EINA_LOG_LEVELS) will be ignored.
* @param file filename that originated the call, must @b not be @c NULL.
* @param fnc function that originated the call, must @b not be @c NULL.
* @param line originating line in @a file.
* @param fmt printf-like format to use. Should not provide trailing
* '\n' as it is automatically included.
*
* @note MT: this function may be called from different threads if
* eina_log_threads_enable() was called before.
*/
EAPI void
eina_log_print(int domain, Eina_Log_Level level, const char *file,
const char *fnc, int line, const char *fmt, ...)
{
va_list args;
#ifdef EINA_SAFETY_CHECKS
if (EINA_UNLIKELY(!file))
{
fputs("ERR: eina_log_print() file == NULL\n", stderr);
return;
}
if (EINA_UNLIKELY(!fnc))
{
fputs("ERR: eina_log_print() fnc == NULL\n", stderr);
return;
}
if (EINA_UNLIKELY(!fmt))
{
fputs("ERR: eina_log_print() fmt == NULL\n", stderr);
return;
}
#endif
va_start(args, fmt);
LOG_LOCK();
eina_log_print_unlocked(domain, level, file, fnc, line, fmt, args);
LOG_UNLOCK();
va_end(args);
}
/**
* Print out log message using given domain and level.
*
* @note Usually you'll not use this function directly but the helper
* macros EINA_LOG(), EINA_LOG_DOM_CRIT(), EINA_LOG_CRIT() and
* so on. See eina_log.h
*
* @param domain logging domain to use or @c EINA_LOG_DOMAIN_GLOBAL if
* you registered none. It is recommended that modules and
* applications have their own logging domain.
* @param level message level, those with level greater than user
* specified value (eina_log_level_set() or environment
* variables EINA_LOG_LEVEL, EINA_LOG_LEVELS) will be ignored.
* @param file filename that originated the call, must @b not be @c NULL.
* @param fnc function that originated the call, must @b not be @c NULL.
* @param line originating line in @a file.
* @param fmt printf-like format to use. Should not provide trailing
* '\n' as it is automatically included.
*
* @note MT: this function may be called from different threads if
* eina_log_threads_enable() was called before.
*
* @see eina_log_print()
*/
EAPI void
eina_log_vprint(int domain, Eina_Log_Level level, const char *file,
const char *fnc, int line, const char *fmt, va_list args)
{
#ifdef EINA_SAFETY_CHECKS
if (EINA_UNLIKELY(!file))
{
fputs("ERR: eina_log_print() file == NULL\n", stderr);
return;
}
if (EINA_UNLIKELY(!fnc))
{
fputs("ERR: eina_log_print() fnc == NULL\n", stderr);
return;
}
if (EINA_UNLIKELY(!fmt))
{
fputs("ERR: eina_log_print() fmt == NULL\n", stderr);
return;
}
#endif
LOG_LOCK();
eina_log_print_unlocked(domain, level, file, fnc, line, fmt, args);
LOG_UNLOCK();
}
/**
* @}
*/
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