* 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, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
- * GLib at ftp://ftp.gtk.org/pub/gtk/.
+ * GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
-/*
+/*
* MT safe
*/
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
+/**
+ * SECTION:warnings
+ * @Title: Message Output and Debugging Functions
+ * @Short_description: functions to output messages and help debug applications
+ *
+ * These functions provide support for outputting messages.
+ *
+ * The g_return family of macros (g_return_if_fail(),
+ * g_return_val_if_fail(), g_return_if_reached(),
+ * g_return_val_if_reached()) should only be used for programming
+ * errors, a typical use case is checking for invalid parameters at
+ * the beginning of a public function. They should not be used if
+ * you just mean "if (error) return", they should only be used if
+ * you mean "if (bug in program) return". The program behavior is
+ * generally considered undefined after one of these checks fails.
+ * They are not intended for normal control flow, only to give a
+ * perhaps-helpful warning before giving up.
+ */
+
+#include "config.h"
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
-#include "glib.h"
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
#include <signal.h>
#include <locale.h>
#include <errno.h>
+#include "glib-init.h"
+#include "gbacktrace.h"
+#include "gcharset.h"
+#include "gconvert.h"
+#include "genviron.h"
+#include "gmem.h"
+#include "gprintfint.h"
+#include "gtestutils.h"
+#include "gthread.h"
+#include "gstrfuncs.h"
+#include "gstring.h"
+#include "gpattern.h"
+
+#ifdef G_OS_UNIX
+#include <unistd.h>
+#endif
+
#ifdef G_OS_WIN32
-typedef FILE* GFileDescriptor;
-#else
-typedef gint GFileDescriptor;
+#include <process.h> /* For getpid() */
+#include <io.h>
+# define _WIN32_WINDOWS 0x0401 /* to get IsDebuggerPresent */
+# include <windows.h>
#endif
+
+/**
+ * SECTION:messages
+ * @title: Message Logging
+ * @short_description: versatile support for logging messages
+ * with different levels of importance
+ *
+ * These functions provide support for logging error messages
+ * or messages used for debugging.
+ *
+ * There are several built-in levels of messages, defined in
+ * #GLogLevelFlags. These can be extended with user-defined levels.
+ */
+
+/**
+ * G_LOG_DOMAIN:
+ *
+ * Defines the log domain.
+ *
+ * For applications, this is typically left as the default %NULL
+ * (or "") domain. Libraries should define this so that any messages
+ * which they log can be differentiated from messages from other
+ * libraries and application code. But be careful not to define
+ * it in any public header files.
+ *
+ * For example, GTK+ uses this in its Makefile.am:
+ * |[
+ * INCLUDES = -DG_LOG_DOMAIN=\"Gtk\"
+ * ]|
+ */
+
+/**
+ * G_LOG_FATAL_MASK:
+ *
+ * GLib log levels that are considered fatal by default.
+ */
+
+/**
+ * GLogFunc:
+ * @log_domain: the log domain of the message
+ * @log_level: the log level of the message (including the
+ * fatal and recursion flags)
+ * @message: the message to process
+ * @user_data: user data, set in g_log_set_handler()
+ *
+ * Specifies the prototype of log handler functions.
+ *
+ * The default log handler, g_log_default_handler(), automatically appends a
+ * new-line character to @message when printing it. It is advised that any
+ * custom log handler functions behave similarly, so that logging calls in user
+ * code do not need modifying to add a new-line character to the message if the
+ * log handler is changed.
+ */
+
+/**
+ * GLogLevelFlags:
+ * @G_LOG_FLAG_RECURSION: internal flag
+ * @G_LOG_FLAG_FATAL: internal flag
+ * @G_LOG_LEVEL_ERROR: log level for errors, see g_error().
+ * This level is also used for messages produced by g_assert().
+ * @G_LOG_LEVEL_CRITICAL: log level for critical messages, see g_critical().
+ * This level is also used for messages produced by g_return_if_fail()
+ * and g_return_val_if_fail().
+ * @G_LOG_LEVEL_WARNING: log level for warnings, see g_warning()
+ * @G_LOG_LEVEL_MESSAGE: log level for messages, see g_message()
+ * @G_LOG_LEVEL_INFO: log level for informational messages, see g_info()
+ * @G_LOG_LEVEL_DEBUG: log level for debug messages, see g_debug()
+ * @G_LOG_LEVEL_MASK: a mask including all log levels
+ *
+ * Flags specifying the level of log messages.
+ *
+ * It is possible to change how GLib treats messages of the various
+ * levels using g_log_set_handler() and g_log_set_fatal_mask().
+ */
+
+/**
+ * G_LOG_LEVEL_USER_SHIFT:
+ *
+ * Log levels below 1<<G_LOG_LEVEL_USER_SHIFT are used by GLib.
+ * Higher bits can be used for user-defined log levels.
+ */
+
+/**
+ * g_message:
+ * @...: format string, followed by parameters to insert
+ * into the format string (as with printf())
+ *
+ * A convenience function/macro to log a normal message.
+ *
+ * If g_log_default_handler() is used as the log handler function, a new-line
+ * character will automatically be appended to @..., and need not be entered
+ * manually.
+ */
+
+/**
+ * g_warning:
+ * @...: format string, followed by parameters to insert
+ * into the format string (as with printf())
+ *
+ * A convenience function/macro to log a warning message.
+ *
+ * You can make warnings fatal at runtime by setting the `G_DEBUG`
+ * environment variable (see
+ * [Running GLib Applications](glib-running.html)).
+ *
+ * If g_log_default_handler() is used as the log handler function,
+ * a newline character will automatically be appended to @..., and
+ * need not be entered manually.
+ */
+
+/**
+ * g_critical:
+ * @...: format string, followed by parameters to insert
+ * into the format string (as with printf())
+ *
+ * Logs a "critical warning" (#G_LOG_LEVEL_CRITICAL).
+ * It's more or less application-defined what constitutes
+ * a critical vs. a regular warning. You could call
+ * g_log_set_always_fatal() to make critical warnings exit
+ * the program, then use g_critical() for fatal errors, for
+ * example.
+ *
+ * You can also make critical warnings fatal at runtime by
+ * setting the `G_DEBUG` environment variable (see
+ * [Running GLib Applications](glib-running.html)).
+ *
+ * If g_log_default_handler() is used as the log handler function, a new-line
+ * character will automatically be appended to @..., and need not be entered
+ * manually.
+ */
+
+/**
+ * g_error:
+ * @...: format string, followed by parameters to insert
+ * into the format string (as with printf())
+ *
+ * A convenience function/macro to log an error message.
+ *
+ * Error messages are always fatal, resulting in a call to
+ * abort() to terminate the application. This function will
+ * result in a core dump; don't use it for errors you expect.
+ * Using this function indicates a bug in your program, i.e.
+ * an assertion failure.
+ *
+ * If g_log_default_handler() is used as the log handler function, a new-line
+ * character will automatically be appended to @..., and need not be entered
+ * manually.
+ *
+ */
+
+/**
+ * g_info:
+ * @...: format string, followed by parameters to insert
+ * into the format string (as with printf())
+ *
+ * A convenience function/macro to log an informational message. Seldom used.
+ *
+ * If g_log_default_handler() is used as the log handler function, a new-line
+ * character will automatically be appended to @..., and need not be entered
+ * manually.
+ *
+ * Such messages are suppressed by the g_log_default_handler() unless
+ * the G_MESSAGES_DEBUG environment variable is set appropriately.
+ *
+ * Since: 2.40
+ */
+
+/**
+ * g_debug:
+ * @...: format string, followed by parameters to insert
+ * into the format string (as with printf())
+ *
+ * A convenience function/macro to log a debug message.
+ *
+ * If g_log_default_handler() is used as the log handler function, a new-line
+ * character will automatically be appended to @..., and need not be entered
+ * manually.
+ *
+ * Such messages are suppressed by the g_log_default_handler() unless
+ * the G_MESSAGES_DEBUG environment variable is set appropriately.
+ *
+ * Since: 2.6
+ */
+
/* --- structures --- */
typedef struct _GLogDomain GLogDomain;
typedef struct _GLogHandler GLogHandler;
};
-/* --- prototypes --- */
-#ifndef HAVE_C99_VSNPRINTF
-static gsize printf_string_upper_bound (const gchar *format,
- gboolean may_warn,
- va_list args);
-#endif /* !HAVE_C99_VSNPRINTF */
-
-
/* --- variables --- */
-
-static GMutex* g_messages_lock = NULL;
-
+static GMutex g_messages_lock;
static GLogDomain *g_log_domains = NULL;
-static GLogLevelFlags g_log_always_fatal = G_LOG_FATAL_MASK;
static GPrintFunc glib_print_func = NULL;
static GPrintFunc glib_printerr_func = NULL;
-
-static GPrivate* g_log_depth = NULL;
+static GPrivate g_log_depth;
+static GLogFunc default_log_func = g_log_default_handler;
+static gpointer default_log_data = NULL;
+static GTestLogFatalFunc fatal_log_func = NULL;
+static gpointer fatal_log_data;
/* --- functions --- */
-#ifdef G_OS_WIN32
-# define STRICT
-# include <windows.h>
-# undef STRICT
-# include <process.h> /* For _getpid() */
-static gboolean alloc_console_called = FALSE;
+static void _g_log_abort (gboolean breakpoint);
+
+static void
+_g_log_abort (gboolean breakpoint)
+{
+ if (g_test_subprocess ())
+ {
+ /* If this is a test case subprocess then it probably caused
+ * this error message on purpose, so just exit() rather than
+ * abort()ing, to avoid triggering any system crash-reporting
+ * daemon.
+ */
+ _exit (1);
+ }
+
+ if (breakpoint)
+ G_BREAKPOINT ();
+ else
+ abort ();
+}
-static gboolean gonna_abort = FALSE;
+#ifdef G_OS_WIN32
+# include <windows.h>
+static gboolean win32_keep_fatal_message = FALSE;
/* This default message will usually be overwritten. */
-/* Yes, a fixed size buffer is bad. So sue me. But g_error is never
- * with huge strings, is it? */
-static char fatal_msg_buf[1000] = "Unspecified fatal error encountered, aborting.";
-static char *fatal_msg_ptr = fatal_msg_buf;
+/* Yes, a fixed size buffer is bad. So sue me. But g_error() is never
+ * called with huge strings, is it?
+ */
+static gchar fatal_msg_buf[1000] = "Unspecified fatal error encountered, aborting.";
+static gchar *fatal_msg_ptr = fatal_msg_buf;
-/* Just use stdio. If we're out of memory, we're hosed anyway. */
#undef write
static inline int
-dowrite (GFileDescriptor fd,
+dowrite (int fd,
const void *buf,
unsigned int len)
{
- if (gonna_abort)
+ if (win32_keep_fatal_message)
{
memcpy (fatal_msg_ptr, buf, len);
fatal_msg_ptr += len;
return len;
}
- fwrite (buf, len, 1, fd);
- fflush (fd);
+ write (fd, buf, len);
return len;
}
-
#define write(fd, buf, len) dowrite(fd, buf, len)
-static void
-ensure_stdout_valid (void)
-{
- HANDLE handle;
-
- if (gonna_abort)
- return;
-
- if (!alloc_console_called)
- {
- handle = GetStdHandle (STD_OUTPUT_HANDLE);
-
- if (handle == INVALID_HANDLE_VALUE)
- {
- AllocConsole ();
- alloc_console_called = TRUE;
- freopen ("CONOUT$", "w", stdout);
- }
- }
-}
-#else
-#define ensure_stdout_valid() /* Define as empty */
#endif
static void
-write_unsigned (GFileDescriptor fd,
- gulong num,
- guint radix)
-{
- char buffer[64];
- gulong tmp;
- char c;
- int i, n;
-
- g_return_if_fail (radix >= 2 && radix <= 36);
-
- if (!num)
- {
- write (fd, "0", 1);
- return;
- }
-
- if (radix == 16)
- write (fd, "0x", 2);
- else if (radix == 8)
- write (fd, "0", 1);
-
- n = 0;
- tmp = num;
- while (tmp)
- {
- tmp /= radix;
- n++;
- }
-
- i = n;
- while (num)
- {
- i--;
- c = (num % radix);
- if (c < 10)
- buffer[i] = c + '0';
- else
- buffer[i] = c + 'a' - 10;
- num /= radix;
- }
-
- write (fd, buffer, n);
-}
-
-static void
-write_string (GFileDescriptor fd,
- gchar *string)
-{
- write (fd, string, strlen (string));
-}
-
-static void
-g_log_write_prefix (GFileDescriptor fd,
- GLogLevelFlags mask)
+write_string (int fd,
+ const gchar *string)
{
- static GLogLevelFlags g_log_msg_prefix = G_LOG_LEVEL_ERROR | G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_DEBUG;
- static gboolean initialized = FALSE;
-
- g_mutex_lock (g_messages_lock);
-
- if (!initialized)
- {
- const gchar *val;
- initialized = TRUE;
-
- val = g_getenv ("G_MESSAGES_PREFIXED");
-
- if (val)
- {
- static const GDebugKey keys[] = {
- { "error", G_LOG_LEVEL_ERROR },
- { "critical", G_LOG_LEVEL_CRITICAL },
- { "warning", G_LOG_LEVEL_WARNING },
- { "message", G_LOG_LEVEL_MESSAGE },
- { "info", G_LOG_LEVEL_INFO },
- { "debug", G_LOG_LEVEL_DEBUG }
- };
-
- g_log_msg_prefix = g_parse_debug_string (val, keys, G_N_ELEMENTS (keys));
- }
- }
-
- g_mutex_unlock (g_messages_lock);
-
- if ((g_log_msg_prefix & mask) == mask)
- {
- gchar *prg_name;
-
- prg_name = g_get_prgname ();
-
- if (!prg_name)
- write_string (fd, "(process:");
- else
- {
- write_string (fd, prg_name);
- write_string (fd, " (pid:");
- }
-
- write_unsigned (fd, getpid (), 10);
- write_string (fd, "): ");
- }
+ int res;
+ do
+ res = write (fd, string, strlen (string));
+ while (G_UNLIKELY (res == -1 && errno == EINTR));
}
-static inline GLogDomain*
-g_log_find_domain (const gchar *log_domain)
+static GLogDomain*
+g_log_find_domain_L (const gchar *log_domain)
{
- register GLogDomain *domain;
+ GLogDomain *domain;
- g_mutex_lock (g_messages_lock);
domain = g_log_domains;
while (domain)
{
if (strcmp (domain->log_domain, log_domain) == 0)
- {
- g_mutex_unlock (g_messages_lock);
- return domain;
- }
+ return domain;
domain = domain->next;
}
- g_mutex_unlock (g_messages_lock);
return NULL;
}
-static inline GLogDomain*
-g_log_domain_new (const gchar *log_domain)
+static GLogDomain*
+g_log_domain_new_L (const gchar *log_domain)
{
- register GLogDomain *domain;
+ GLogDomain *domain;
domain = g_new (GLogDomain, 1);
domain->log_domain = g_strdup (log_domain);
domain->fatal_mask = G_LOG_FATAL_MASK;
domain->handlers = NULL;
- g_mutex_lock (g_messages_lock);
domain->next = g_log_domains;
g_log_domains = domain;
- g_mutex_unlock (g_messages_lock);
return domain;
}
-static inline void
-g_log_domain_check_free (GLogDomain *domain)
+static void
+g_log_domain_check_free_L (GLogDomain *domain)
{
if (domain->fatal_mask == G_LOG_FATAL_MASK &&
domain->handlers == NULL)
{
- register GLogDomain *last, *work;
+ GLogDomain *last, *work;
last = NULL;
- g_mutex_lock (g_messages_lock);
work = g_log_domains;
while (work)
{
last = work;
work = last->next;
}
- g_mutex_unlock (g_messages_lock);
}
}
-static inline GLogFunc
-g_log_domain_get_handler (GLogDomain *domain,
- GLogLevelFlags log_level,
- gpointer *data)
+static GLogFunc
+g_log_domain_get_handler_L (GLogDomain *domain,
+ GLogLevelFlags log_level,
+ gpointer *data)
{
if (domain && log_level)
{
- register GLogHandler *handler;
+ GLogHandler *handler;
handler = domain->handlers;
while (handler)
handler = handler->next;
}
}
- return g_log_default_handler;
+
+ *data = default_log_data;
+ return default_log_func;
}
+/**
+ * g_log_set_always_fatal:
+ * @fatal_mask: the mask containing bits set for each level
+ * of error which is to be fatal
+ *
+ * Sets the message levels which are always fatal, in any log domain.
+ * When a message with any of these levels is logged the program terminates.
+ * You can only set the levels defined by GLib to be fatal.
+ * %G_LOG_LEVEL_ERROR is always fatal.
+ *
+ * You can also make some message levels fatal at runtime by setting
+ * the `G_DEBUG` environment variable (see
+ * [Running GLib Applications](glib-running.html)).
+ *
+ * Returns: the old fatal mask
+ */
GLogLevelFlags
g_log_set_always_fatal (GLogLevelFlags fatal_mask)
{
GLogLevelFlags old_mask;
- /* restrict the global mask to levels that are known to glib */
+ /* restrict the global mask to levels that are known to glib
+ * since this setting applies to all domains
+ */
fatal_mask &= (1 << G_LOG_LEVEL_USER_SHIFT) - 1;
/* force errors to be fatal */
fatal_mask |= G_LOG_LEVEL_ERROR;
/* remove bogus flag */
fatal_mask &= ~G_LOG_FLAG_FATAL;
- g_mutex_lock (g_messages_lock);
+ g_mutex_lock (&g_messages_lock);
old_mask = g_log_always_fatal;
g_log_always_fatal = fatal_mask;
- g_mutex_unlock (g_messages_lock);
+ g_mutex_unlock (&g_messages_lock);
return old_mask;
}
+/**
+ * g_log_set_fatal_mask:
+ * @log_domain: the log domain
+ * @fatal_mask: the new fatal mask
+ *
+ * Sets the log levels which are fatal in the given domain.
+ * %G_LOG_LEVEL_ERROR is always fatal.
+ *
+ * Returns: the old fatal mask for the log domain
+ */
GLogLevelFlags
-g_log_set_fatal_mask (const gchar *log_domain,
- GLogLevelFlags fatal_mask)
+g_log_set_fatal_mask (const gchar *log_domain,
+ GLogLevelFlags fatal_mask)
{
GLogLevelFlags old_flags;
- register GLogDomain *domain;
+ GLogDomain *domain;
if (!log_domain)
log_domain = "";
/* remove bogus flag */
fatal_mask &= ~G_LOG_FLAG_FATAL;
- domain = g_log_find_domain (log_domain);
+ g_mutex_lock (&g_messages_lock);
+
+ domain = g_log_find_domain_L (log_domain);
if (!domain)
- domain = g_log_domain_new (log_domain);
+ domain = g_log_domain_new_L (log_domain);
old_flags = domain->fatal_mask;
domain->fatal_mask = fatal_mask;
- g_log_domain_check_free (domain);
-
+ g_log_domain_check_free_L (domain);
+
+ g_mutex_unlock (&g_messages_lock);
+
return old_flags;
}
+/**
+ * g_log_set_handler:
+ * @log_domain: (allow-none): the log domain, or %NULL for the default ""
+ * application domain
+ * @log_levels: the log levels to apply the log handler for.
+ * To handle fatal and recursive messages as well, combine
+ * the log levels with the #G_LOG_FLAG_FATAL and
+ * #G_LOG_FLAG_RECURSION bit flags.
+ * @log_func: the log handler function
+ * @user_data: data passed to the log handler
+ *
+ * Sets the log handler for a domain and a set of log levels.
+ * To handle fatal and recursive messages the @log_levels parameter
+ * must be combined with the #G_LOG_FLAG_FATAL and #G_LOG_FLAG_RECURSION
+ * bit flags.
+ *
+ * Note that since the #G_LOG_LEVEL_ERROR log level is always fatal, if
+ * you want to set a handler for this log level you must combine it with
+ * #G_LOG_FLAG_FATAL.
+ *
+ * Here is an example for adding a log handler for all warning messages
+ * in the default domain:
+ * |[<!-- language="C" -->
+ * g_log_set_handler (NULL, G_LOG_LEVEL_WARNING | G_LOG_FLAG_FATAL
+ * | G_LOG_FLAG_RECURSION, my_log_handler, NULL);
+ * ]|
+ *
+ * This example adds a log handler for all critical messages from GTK+:
+ * |[<!-- language="C" -->
+ * g_log_set_handler ("Gtk", G_LOG_LEVEL_CRITICAL | G_LOG_FLAG_FATAL
+ * | G_LOG_FLAG_RECURSION, my_log_handler, NULL);
+ * ]|
+ *
+ * This example adds a log handler for all messages from GLib:
+ * |[<!-- language="C" -->
+ * g_log_set_handler ("GLib", G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL
+ * | G_LOG_FLAG_RECURSION, my_log_handler, NULL);
+ * ]|
+ *
+ * Returns: the id of the new handler
+ */
guint
-g_log_set_handler (const gchar *log_domain,
- GLogLevelFlags log_levels,
- GLogFunc log_func,
- gpointer user_data)
+g_log_set_handler (const gchar *log_domain,
+ GLogLevelFlags log_levels,
+ GLogFunc log_func,
+ gpointer user_data)
{
- register GLogDomain *domain;
- register GLogHandler *handler;
static guint handler_id = 0;
+ GLogDomain *domain;
+ GLogHandler *handler;
g_return_val_if_fail ((log_levels & G_LOG_LEVEL_MASK) != 0, 0);
g_return_val_if_fail (log_func != NULL, 0);
if (!log_domain)
log_domain = "";
-
- domain = g_log_find_domain (log_domain);
+
+ handler = g_new (GLogHandler, 1);
+
+ g_mutex_lock (&g_messages_lock);
+
+ domain = g_log_find_domain_L (log_domain);
if (!domain)
- domain = g_log_domain_new (log_domain);
+ domain = g_log_domain_new_L (log_domain);
- handler = g_new (GLogHandler, 1);
- g_mutex_lock (g_messages_lock);
handler->id = ++handler_id;
- g_mutex_unlock (g_messages_lock);
handler->log_level = log_levels;
handler->log_func = log_func;
handler->data = user_data;
handler->next = domain->handlers;
domain->handlers = handler;
+
+ g_mutex_unlock (&g_messages_lock);
return handler_id;
}
+/**
+ * g_log_set_default_handler:
+ * @log_func: the log handler function
+ * @user_data: data passed to the log handler
+ *
+ * Installs a default log handler which is used if no
+ * log handler has been set for the particular log domain
+ * and log level combination. By default, GLib uses
+ * g_log_default_handler() as default log handler.
+ *
+ * Returns: the previous default log handler
+ *
+ * Since: 2.6
+ */
+GLogFunc
+g_log_set_default_handler (GLogFunc log_func,
+ gpointer user_data)
+{
+ GLogFunc old_log_func;
+
+ g_mutex_lock (&g_messages_lock);
+ old_log_func = default_log_func;
+ default_log_func = log_func;
+ default_log_data = user_data;
+ g_mutex_unlock (&g_messages_lock);
+
+ return old_log_func;
+}
+
+/**
+ * g_test_log_set_fatal_handler:
+ * @log_func: the log handler function.
+ * @user_data: data passed to the log handler.
+ *
+ * Installs a non-error fatal log handler which can be
+ * used to decide whether log messages which are counted
+ * as fatal abort the program.
+ *
+ * The use case here is that you are running a test case
+ * that depends on particular libraries or circumstances
+ * and cannot prevent certain known critical or warning
+ * messages. So you install a handler that compares the
+ * domain and message to precisely not abort in such a case.
+ *
+ * Note that the handler is reset at the beginning of
+ * any test case, so you have to set it inside each test
+ * function which needs the special behavior.
+ *
+ * This handler has no effect on g_error messages.
+ *
+ * Since: 2.22
+ **/
+void
+g_test_log_set_fatal_handler (GTestLogFatalFunc log_func,
+ gpointer user_data)
+{
+ g_mutex_lock (&g_messages_lock);
+ fatal_log_func = log_func;
+ fatal_log_data = user_data;
+ g_mutex_unlock (&g_messages_lock);
+}
+
+/**
+ * g_log_remove_handler:
+ * @log_domain: the log domain
+ * @handler_id: the id of the handler, which was returned
+ * in g_log_set_handler()
+ *
+ * Removes the log handler.
+ */
void
g_log_remove_handler (const gchar *log_domain,
guint handler_id)
{
- register GLogDomain *domain;
+ GLogDomain *domain;
g_return_if_fail (handler_id > 0);
if (!log_domain)
log_domain = "";
- domain = g_log_find_domain (log_domain);
+ g_mutex_lock (&g_messages_lock);
+ domain = g_log_find_domain_L (log_domain);
if (domain)
{
- register GLogHandler *work, *last;
+ GLogHandler *work, *last;
last = NULL;
work = domain->handlers;
last->next = work->next;
else
domain->handlers = work->next;
+ g_log_domain_check_free_L (domain);
+ g_mutex_unlock (&g_messages_lock);
g_free (work);
- g_log_domain_check_free (domain);
return;
}
last = work;
work = last->next;
}
- }
- g_warning ("g_log_remove_handler(): could not find handler with id `%d' for domain \"%s\"",
- handler_id,
- log_domain);
+ }
+ g_mutex_unlock (&g_messages_lock);
+ g_warning ("%s: could not find handler with id '%d' for domain \"%s\"",
+ G_STRLOC, handler_id, log_domain);
}
-void
-g_logv (const gchar *log_domain,
- GLogLevelFlags log_level,
- const gchar *format,
- va_list args1)
+#define CHAR_IS_SAFE(wc) (!((wc < 0x20 && wc != '\t' && wc != '\n' && wc != '\r') || \
+ (wc == 0x7f) || \
+ (wc >= 0x80 && wc < 0xa0)))
+
+static gchar*
+strdup_convert (const gchar *string,
+ const gchar *charset)
{
- gchar buffer[1025];
- register gint i;
-
-#ifndef HAVE_VSNPRINTF
- va_list args2;
-#endif /* HAVE_VSNPRINTF */
-
- log_level &= G_LOG_LEVEL_MASK;
- if (!log_level)
- return;
-
- /* we use a stack buffer of fixed size, because we might get called
- * recursively.
- */
-#ifdef HAVE_VSNPRINTF
- vsnprintf (buffer, 1024, format, args1);
-#else /* !HAVE_VSNPRINTF */
- G_VA_COPY (args2, args1);
- if (printf_string_upper_bound (format, FALSE, args1) < 1024)
- vsprintf (buffer, format, args2);
- else
+ if (!g_utf8_validate (string, -1, NULL))
{
- /* since we might be out of memory, we can't use g_vsnprintf(). */
- /* we are out of luck here */
- strncpy (buffer, format, 1024);
- buffer[1024] = 0;
+ GString *gstring = g_string_new ("[Invalid UTF-8] ");
+ guchar *p;
+
+ for (p = (guchar *)string; *p; p++)
+ {
+ if (CHAR_IS_SAFE(*p) &&
+ !(*p == '\r' && *(p + 1) != '\n') &&
+ *p < 0x80)
+ g_string_append_c (gstring, *p);
+ else
+ g_string_append_printf (gstring, "\\x%02x", (guint)(guchar)*p);
+ }
+
+ return g_string_free (gstring, FALSE);
}
- va_end (args2);
-#endif /* !HAVE_VSNPRINTF */
-
- for (i = g_bit_nth_msf (log_level, -1); i >= 0; i = g_bit_nth_msf (log_level, i))
+ else
{
- register GLogLevelFlags test_level;
+ GError *err = NULL;
- test_level = 1 << i;
- if (log_level & test_level)
+ gchar *result = g_convert_with_fallback (string, -1, charset, "UTF-8", "?", NULL, NULL, &err);
+ if (result)
+ return result;
+ else
{
- guint depth = GPOINTER_TO_UINT (g_private_get (g_log_depth));
- GLogDomain *domain;
- GLogFunc log_func;
- gpointer data = NULL;
-
- domain = g_log_find_domain (log_domain ? log_domain : "");
-
- if (depth)
- test_level |= G_LOG_FLAG_RECURSION;
-
- depth++;
- g_private_set (g_log_depth, GUINT_TO_POINTER (depth));
-
- g_mutex_lock (g_messages_lock);
- if ((((domain ? domain->fatal_mask : G_LOG_FATAL_MASK) |
- g_log_always_fatal) & test_level) != 0)
- test_level |= G_LOG_FLAG_FATAL;
- g_mutex_unlock (g_messages_lock);
-
- log_func = g_log_domain_get_handler (domain, test_level, &data);
- log_func (log_domain, test_level, buffer, data);
-
- /* *domain can be cluttered now */
-
- if (test_level & G_LOG_FLAG_FATAL)
+ /* Not thread-safe, but doesn't matter if we print the warning twice
+ */
+ static gboolean warned = FALSE;
+ if (!warned)
{
-#ifdef G_OS_WIN32
- MessageBox (NULL, fatal_msg_buf, NULL, MB_OK);
-#endif
-#if defined (G_ENABLE_DEBUG) && (defined (SIGTRAP) || defined (G_OS_WIN32))
- if (!(test_level & G_LOG_FLAG_RECURSION))
- G_BREAKPOINT ();
- else
- abort ();
-#else /* !G_ENABLE_DEBUG || !(SIGTRAP || G_OS_WIN32) */
- abort ();
-#endif /* !G_ENABLE_DEBUG || !(SIGTRAP || G_OS_WIN32) */
+ warned = TRUE;
+ _g_fprintf (stderr, "GLib: Cannot convert message: %s\n", err->message);
}
+ g_error_free (err);
- depth--;
- g_private_set (g_log_depth, GUINT_TO_POINTER (depth));
+ return g_strdup (string);
}
}
}
-void
-g_log (const gchar *log_domain,
- GLogLevelFlags log_level,
- const gchar *format,
- ...)
+/* For a radix of 8 we need at most 3 output bytes for 1 input
+ * byte. Additionally we might need up to 2 output bytes for the
+ * readix prefix and 1 byte for the trailing NULL.
+ */
+#define FORMAT_UNSIGNED_BUFSIZE ((GLIB_SIZEOF_LONG * 3) + 3)
+
+static void
+format_unsigned (gchar *buf,
+ gulong num,
+ guint radix)
{
- va_list args;
-
- va_start (args, format);
- g_logv (log_domain, log_level, format, args);
- va_end (args);
-}
+ gulong tmp;
+ gchar c;
+ gint i, n;
-void
-g_log_default_handler (const gchar *log_domain,
- GLogLevelFlags log_level,
- const gchar *message,
- gpointer unused_data)
-{
- GFileDescriptor fd;
- gboolean in_recursion;
- gboolean is_fatal;
-
- in_recursion = (log_level & G_LOG_FLAG_RECURSION) != 0;
- is_fatal = (log_level & G_LOG_FLAG_FATAL) != 0;
- log_level &= G_LOG_LEVEL_MASK;
-
- if (!message)
- message = "g_log_default_handler(): (NULL) message";
+ /* we may not call _any_ GLib functions here (or macros like g_return_if_fail()) */
+
+ if (radix != 8 && radix != 10 && radix != 16)
+ {
+ *buf = '\000';
+ return;
+ }
-#ifdef G_OS_WIN32
- /* Use just stdout as stderr is hard to get redirected from the
- * DOS prompt.
- */
- fd = stdout;
- gonna_abort = is_fatal;
-#else
- fd = (log_level > G_LOG_LEVEL_MESSAGE) ? 1 : 2;
-#endif
+ if (!num)
+ {
+ *buf++ = '0';
+ *buf = '\000';
+ return;
+ }
- switch (log_level)
+ if (radix == 16)
{
- case G_LOG_LEVEL_ERROR:
- /* use write(2) for output, in case we are out of memeory */
- ensure_stdout_valid ();
- write (fd, "\n", 1);
- g_log_write_prefix (fd, log_level);
+ *buf++ = '0';
+ *buf++ = 'x';
+ }
+ else if (radix == 8)
+ {
+ *buf++ = '0';
+ }
+
+ n = 0;
+ tmp = num;
+ while (tmp)
+ {
+ tmp /= radix;
+ n++;
+ }
- if (log_domain)
- {
- write (fd, log_domain, strlen (log_domain));
- write (fd, "-", 1);
- }
- else
- write (fd, "** ", 3);
- if (in_recursion)
- write (fd, "ERROR (recursed) **: ", 21);
- else
- write (fd, "ERROR **: ", 10);
- write (fd, message, strlen (message));
- if (is_fatal)
- write (fd, "\naborting...\n", 13);
+ i = n;
+
+ /* Again we can't use g_assert; actually this check should _never_ fail. */
+ if (n > FORMAT_UNSIGNED_BUFSIZE - 3)
+ {
+ *buf = '\000';
+ return;
+ }
+
+ while (num)
+ {
+ i--;
+ c = (num % radix);
+ if (c < 10)
+ buf[i] = c + '0';
else
- write (fd, "\n", 1);
+ buf[i] = c + 'a' - 10;
+ num /= radix;
+ }
+
+ buf[n] = '\000';
+}
+
+/* string size big enough to hold level prefix */
+#define STRING_BUFFER_SIZE (FORMAT_UNSIGNED_BUFSIZE + 32)
+
+#define ALERT_LEVELS (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING)
+
+/* these are emitted by the default log handler */
+#define DEFAULT_LEVELS (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING | G_LOG_LEVEL_MESSAGE)
+/* these are filtered by G_MESSAGES_DEBUG by the default log handler */
+#define INFO_LEVELS (G_LOG_LEVEL_INFO | G_LOG_LEVEL_DEBUG)
+
+static int
+mklevel_prefix (gchar level_prefix[STRING_BUFFER_SIZE],
+ GLogLevelFlags log_level)
+{
+ gboolean to_stdout = TRUE;
+
+ /* we may not call _any_ GLib functions here */
+
+ switch (log_level & G_LOG_LEVEL_MASK)
+ {
+ case G_LOG_LEVEL_ERROR:
+ strcpy (level_prefix, "ERROR");
+ to_stdout = FALSE;
break;
case G_LOG_LEVEL_CRITICAL:
- ensure_stdout_valid ();
- write (fd, "\n", 1);
- g_log_write_prefix (fd, log_level);
-
- if (log_domain)
- {
- write (fd, log_domain, strlen (log_domain));
- write (fd, "-", 1);
- }
- else
- write (fd, "** ", 3);
- if (in_recursion)
- write (fd, "CRITICAL (recursed) **: ", 24);
- else
- write (fd, "CRITICAL **: ", 13);
- write (fd, message, strlen (message));
- if (is_fatal)
- write (fd, "\naborting...\n", 13);
- else
- write (fd, "\n", 1);
+ strcpy (level_prefix, "CRITICAL");
+ to_stdout = FALSE;
break;
case G_LOG_LEVEL_WARNING:
- ensure_stdout_valid ();
- write (fd, "\n", 1);
- g_log_write_prefix (fd, log_level);
-
- if (log_domain)
- {
- write (fd, log_domain, strlen (log_domain));
- write (fd, "-", 1);
- }
- else
- write (fd, "** ", 3);
- if (in_recursion)
- write (fd, "WARNING (recursed) **: ", 23);
- else
- write (fd, "WARNING **: ", 12);
- write (fd, message, strlen (message));
- if (is_fatal)
- write (fd, "\naborting...\n", 13);
- else
- write (fd, "\n", 1);
+ strcpy (level_prefix, "WARNING");
+ to_stdout = FALSE;
break;
case G_LOG_LEVEL_MESSAGE:
- ensure_stdout_valid ();
-
- g_log_write_prefix (fd, log_level);
-
- if (log_domain)
+ strcpy (level_prefix, "Message");
+ to_stdout = FALSE;
+ break;
+ case G_LOG_LEVEL_INFO:
+ strcpy (level_prefix, "INFO");
+ break;
+ case G_LOG_LEVEL_DEBUG:
+ strcpy (level_prefix, "DEBUG");
+ break;
+ default:
+ if (log_level)
{
- write (fd, log_domain, strlen (log_domain));
- write (fd, "-", 1);
+ strcpy (level_prefix, "LOG-");
+ format_unsigned (level_prefix + 4, log_level & G_LOG_LEVEL_MASK, 16);
}
- if (in_recursion)
- write (fd, "Message (recursed): ", 20);
- else
- write (fd, "Message: ", 9);
- write (fd, message, strlen (message));
- if (is_fatal)
- write (fd, "\naborting...\n", 13);
else
- write (fd, "\n", 1);
+ strcpy (level_prefix, "LOG");
break;
- case G_LOG_LEVEL_INFO:
- ensure_stdout_valid ();
+ }
+ if (log_level & G_LOG_FLAG_RECURSION)
+ strcat (level_prefix, " (recursed)");
+ if (log_level & ALERT_LEVELS)
+ strcat (level_prefix, " **");
+
+#ifdef G_OS_WIN32
+ if ((log_level & G_LOG_FLAG_FATAL) != 0 && !g_test_initialized ())
+ win32_keep_fatal_message = TRUE;
+#endif
+ return to_stdout ? 1 : 2;
+}
+
+typedef struct {
+ gchar *log_domain;
+ GLogLevelFlags log_level;
+ gchar *pattern;
+} GTestExpectedMessage;
+
+static GSList *expected_messages = NULL;
+
+/**
+ * g_logv:
+ * @log_domain: the log domain
+ * @log_level: the log level
+ * @format: the message format. See the printf() documentation
+ * @args: the parameters to insert into the format string
+ *
+ * Logs an error or debugging message.
+ *
+ * If the log level has been set as fatal, the abort()
+ * function is called to terminate the program.
+ *
+ * If g_log_default_handler() is used as the log handler function, a new-line
+ * character will automatically be appended to @..., and need not be entered
+ * manually.
+ */
+void
+g_logv (const gchar *log_domain,
+ GLogLevelFlags log_level,
+ const gchar *format,
+ va_list args)
+{
+ gboolean was_fatal = (log_level & G_LOG_FLAG_FATAL) != 0;
+ gboolean was_recursion = (log_level & G_LOG_FLAG_RECURSION) != 0;
+ gchar buffer[1025], *msg, *msg_alloc = NULL;
+ gint i;
+
+ log_level &= G_LOG_LEVEL_MASK;
+ if (!log_level)
+ return;
+
+ if (log_level & G_LOG_FLAG_RECURSION)
+ {
+ /* we use a stack buffer of fixed size, since we're likely
+ * in an out-of-memory situation
+ */
+ gsize size G_GNUC_UNUSED;
+
+ size = _g_vsnprintf (buffer, 1024, format, args);
+ msg = buffer;
+ }
+ else
+ msg = msg_alloc = g_strdup_vprintf (format, args);
+
+ if (expected_messages)
+ {
+ GTestExpectedMessage *expected = expected_messages->data;
+
+ if (g_strcmp0 (expected->log_domain, log_domain) == 0 &&
+ ((log_level & expected->log_level) == expected->log_level) &&
+ g_pattern_match_simple (expected->pattern, msg))
+ {
+ expected_messages = g_slist_delete_link (expected_messages,
+ expected_messages);
+ g_free (expected->log_domain);
+ g_free (expected->pattern);
+ g_free (expected);
+ g_free (msg_alloc);
+ return;
+ }
+ else if ((log_level & G_LOG_LEVEL_DEBUG) != G_LOG_LEVEL_DEBUG)
+ {
+ gchar level_prefix[STRING_BUFFER_SIZE];
+ gchar *expected_message;
+
+ mklevel_prefix (level_prefix, expected->log_level);
+ expected_message = g_strdup_printf ("Did not see expected message %s: %s",
+ level_prefix, expected->pattern);
+ g_log_default_handler (log_domain, log_level, expected_message, NULL);
+ g_free (expected_message);
- g_log_write_prefix (fd, log_level);
+ log_level |= G_LOG_FLAG_FATAL;
+ }
+ }
- if (log_domain)
+ for (i = g_bit_nth_msf (log_level, -1); i >= 0; i = g_bit_nth_msf (log_level, i))
+ {
+ GLogLevelFlags test_level;
+
+ test_level = 1 << i;
+ if (log_level & test_level)
{
- write (fd, log_domain, strlen (log_domain));
- write (fd, "-", 1);
+ GLogDomain *domain;
+ GLogFunc log_func;
+ GLogLevelFlags domain_fatal_mask;
+ gpointer data = NULL;
+ gboolean masquerade_fatal = FALSE;
+ guint depth;
+
+ if (was_fatal)
+ test_level |= G_LOG_FLAG_FATAL;
+ if (was_recursion)
+ test_level |= G_LOG_FLAG_RECURSION;
+
+ /* check recursion and lookup handler */
+ g_mutex_lock (&g_messages_lock);
+ depth = GPOINTER_TO_UINT (g_private_get (&g_log_depth));
+ domain = g_log_find_domain_L (log_domain ? log_domain : "");
+ if (depth)
+ test_level |= G_LOG_FLAG_RECURSION;
+ depth++;
+ domain_fatal_mask = domain ? domain->fatal_mask : G_LOG_FATAL_MASK;
+ if ((domain_fatal_mask | g_log_always_fatal) & test_level)
+ test_level |= G_LOG_FLAG_FATAL;
+ if (test_level & G_LOG_FLAG_RECURSION)
+ log_func = _g_log_fallback_handler;
+ else
+ log_func = g_log_domain_get_handler_L (domain, test_level, &data);
+ domain = NULL;
+ g_mutex_unlock (&g_messages_lock);
+
+ g_private_set (&g_log_depth, GUINT_TO_POINTER (depth));
+
+ log_func (log_domain, test_level, msg, data);
+
+ if ((test_level & G_LOG_FLAG_FATAL)
+ && !(test_level & G_LOG_LEVEL_ERROR))
+ {
+ masquerade_fatal = fatal_log_func
+ && !fatal_log_func (log_domain, test_level, msg, fatal_log_data);
+ }
+
+ if ((test_level & G_LOG_FLAG_FATAL) && !masquerade_fatal)
+ {
+#ifdef G_OS_WIN32
+ if (win32_keep_fatal_message)
+ {
+ gchar *locale_msg = g_locale_from_utf8 (fatal_msg_buf, -1, NULL, NULL, NULL);
+
+ MessageBox (NULL, locale_msg, NULL,
+ MB_ICONERROR|MB_SETFOREGROUND);
+ }
+ _g_log_abort (IsDebuggerPresent () && !(test_level & G_LOG_FLAG_RECURSION));
+#else
+ _g_log_abort (!(test_level & G_LOG_FLAG_RECURSION));
+#endif /* !G_OS_WIN32 */
+ }
+
+ depth--;
+ g_private_set (&g_log_depth, GUINT_TO_POINTER (depth));
}
- if (in_recursion)
- write (fd, "INFO (recursed): ", 17);
- else
- write (fd, "INFO: ", 6);
- write (fd, message, strlen (message));
- if (is_fatal)
- write (fd, "\naborting...\n", 13);
- else
- write (fd, "\n", 1);
- break;
- case G_LOG_LEVEL_DEBUG:
- ensure_stdout_valid ();
+ }
+
+ g_free (msg_alloc);
+}
+
+/**
+ * g_log:
+ * @log_domain: the log domain, usually #G_LOG_DOMAIN
+ * @log_level: the log level, either from #GLogLevelFlags
+ * or a user-defined level
+ * @format: the message format. See the printf() documentation
+ * @...: the parameters to insert into the format string
+ *
+ * Logs an error or debugging message.
+ *
+ * If the log level has been set as fatal, the abort()
+ * function is called to terminate the program.
+ *
+ * If g_log_default_handler() is used as the log handler function, a new-line
+ * character will automatically be appended to @..., and need not be entered
+ * manually.
+ */
+void
+g_log (const gchar *log_domain,
+ GLogLevelFlags log_level,
+ const gchar *format,
+ ...)
+{
+ va_list args;
+
+ va_start (args, format);
+ g_logv (log_domain, log_level, format, args);
+ va_end (args);
+}
+
+void
+g_return_if_fail_warning (const char *log_domain,
+ const char *pretty_function,
+ const char *expression)
+{
+ g_log (log_domain,
+ G_LOG_LEVEL_CRITICAL,
+ "%s: assertion '%s' failed",
+ pretty_function,
+ expression);
+}
+
+void
+g_warn_message (const char *domain,
+ const char *file,
+ int line,
+ const char *func,
+ const char *warnexpr)
+{
+ char *s, lstr[32];
+ g_snprintf (lstr, 32, "%d", line);
+ if (warnexpr)
+ s = g_strconcat ("(", file, ":", lstr, "):",
+ func, func[0] ? ":" : "",
+ " runtime check failed: (", warnexpr, ")", NULL);
+ else
+ s = g_strconcat ("(", file, ":", lstr, "):",
+ func, func[0] ? ":" : "",
+ " ", "code should not be reached", NULL);
+ g_log (domain, G_LOG_LEVEL_WARNING, "%s", s);
+ g_free (s);
+}
+
+void
+g_assert_warning (const char *log_domain,
+ const char *file,
+ const int line,
+ const char *pretty_function,
+ const char *expression)
+{
+ if (expression)
+ g_log (log_domain,
+ G_LOG_LEVEL_ERROR,
+ "file %s: line %d (%s): assertion failed: (%s)",
+ file,
+ line,
+ pretty_function,
+ expression);
+ else
+ g_log (log_domain,
+ G_LOG_LEVEL_ERROR,
+ "file %s: line %d (%s): should not be reached",
+ file,
+ line,
+ pretty_function);
+ _g_log_abort (FALSE);
+ abort ();
+}
+
+/**
+ * g_test_expect_message:
+ * @log_domain: (allow-none): the log domain of the message
+ * @log_level: the log level of the message
+ * @pattern: a glob-style [pattern][glib-Glob-style-pattern-matching]
+ *
+ * Indicates that a message with the given @log_domain and @log_level,
+ * with text matching @pattern, is expected to be logged. When this
+ * message is logged, it will not be printed, and the test case will
+ * not abort.
+ *
+ * Use g_test_assert_expected_messages() to assert that all
+ * previously-expected messages have been seen and suppressed.
+ *
+ * You can call this multiple times in a row, if multiple messages are
+ * expected as a result of a single call. (The messages must appear in
+ * the same order as the calls to g_test_expect_message().)
+ *
+ * For example:
+ *
+ * |[<!-- language="C" -->
+ * // g_main_context_push_thread_default() should fail if the
+ * // context is already owned by another thread.
+ * g_test_expect_message (G_LOG_DOMAIN,
+ * G_LOG_LEVEL_CRITICAL,
+ * "assertion*acquired_context*failed");
+ * g_main_context_push_thread_default (bad_context);
+ * g_test_assert_expected_messages ();
+ * ]|
+ *
+ * Note that you cannot use this to test g_error() messages, since
+ * g_error() intentionally never returns even if the program doesn't
+ * abort; use g_test_trap_subprocess() in this case.
+ *
+ * If messages at %G_LOG_LEVEL_DEBUG are emitted, but not explicitly
+ * expected via g_test_expect_message() then they will be ignored.
+ *
+ * Since: 2.34
+ */
+void
+g_test_expect_message (const gchar *log_domain,
+ GLogLevelFlags log_level,
+ const gchar *pattern)
+{
+ GTestExpectedMessage *expected;
+
+ g_return_if_fail (log_level != 0);
+ g_return_if_fail (pattern != NULL);
+ g_return_if_fail (~log_level & G_LOG_LEVEL_ERROR);
+
+ expected = g_new (GTestExpectedMessage, 1);
+ expected->log_domain = g_strdup (log_domain);
+ expected->log_level = log_level;
+ expected->pattern = g_strdup (pattern);
+
+ expected_messages = g_slist_append (expected_messages, expected);
+}
+
+void
+g_test_assert_expected_messages_internal (const char *domain,
+ const char *file,
+ int line,
+ const char *func)
+{
+ if (expected_messages)
+ {
+ GTestExpectedMessage *expected;
+ gchar level_prefix[STRING_BUFFER_SIZE];
+ gchar *message;
+
+ expected = expected_messages->data;
- g_log_write_prefix (fd, log_level);
+ mklevel_prefix (level_prefix, expected->log_level);
+ message = g_strdup_printf ("Did not see expected message %s: %s",
+ level_prefix, expected->pattern);
+ g_assertion_message (domain, file, line, func, message);
+ g_free (message);
+ }
+}
+
+/**
+ * g_test_assert_expected_messages:
+ *
+ * Asserts that all messages previously indicated via
+ * g_test_expect_message() have been seen and suppressed.
+ *
+ * If messages at %G_LOG_LEVEL_DEBUG are emitted, but not explicitly
+ * expected via g_test_expect_message() then they will be ignored.
+ *
+ * Since: 2.34
+ */
+
+void
+_g_log_fallback_handler (const gchar *log_domain,
+ GLogLevelFlags log_level,
+ const gchar *message,
+ gpointer unused_data)
+{
+ gchar level_prefix[STRING_BUFFER_SIZE];
+#ifndef G_OS_WIN32
+ gchar pid_string[FORMAT_UNSIGNED_BUFSIZE];
+#endif
+ int fd;
- if (log_domain)
+ /* we cannot call _any_ GLib functions in this fallback handler,
+ * which is why we skip UTF-8 conversion, etc.
+ * since we either recursed or ran out of memory, we're in a pretty
+ * pathologic situation anyways, what we can do is giving the
+ * the process ID unconditionally however.
+ */
+
+ fd = mklevel_prefix (level_prefix, log_level);
+ if (!message)
+ message = "(NULL) message";
+
+#ifndef G_OS_WIN32
+ format_unsigned (pid_string, getpid (), 10);
+#endif
+
+ if (log_domain)
+ write_string (fd, "\n");
+ else
+ write_string (fd, "\n** ");
+
+#ifndef G_OS_WIN32
+ write_string (fd, "(process:");
+ write_string (fd, pid_string);
+ write_string (fd, "): ");
+#endif
+
+ if (log_domain)
+ {
+ write_string (fd, log_domain);
+ write_string (fd, "-");
+ }
+ write_string (fd, level_prefix);
+ write_string (fd, ": ");
+ write_string (fd, message);
+}
+
+static void
+escape_string (GString *string)
+{
+ const char *p = string->str;
+ gunichar wc;
+
+ while (p < string->str + string->len)
+ {
+ gboolean safe;
+
+ wc = g_utf8_get_char_validated (p, -1);
+ if (wc == (gunichar)-1 || wc == (gunichar)-2)
{
- write (fd, log_domain, strlen (log_domain));
- write (fd, "-", 1);
- }
- if (in_recursion)
- write (fd, "DEBUG (recursed): ", 18);
- else
- write (fd, "DEBUG: ", 7);
- write (fd, message, strlen (message));
- if (is_fatal)
- write (fd, "\naborting...\n", 13);
- else
- write (fd, "\n", 1);
- break;
- default:
- /* we are used for a log level that is not defined by GLib itself,
- * try to make the best out of it.
- */
- ensure_stdout_valid ();
+ gchar *tmp;
+ guint pos;
- g_log_write_prefix (fd, log_level);
+ pos = p - string->str;
- if (log_domain)
+ /* Emit invalid UTF-8 as hex escapes
+ */
+ tmp = g_strdup_printf ("\\x%02x", (guint)(guchar)*p);
+ g_string_erase (string, pos, 1);
+ g_string_insert (string, pos, tmp);
+
+ p = string->str + (pos + 4); /* Skip over escape sequence */
+
+ g_free (tmp);
+ continue;
+ }
+ if (wc == '\r')
{
- write (fd, log_domain, strlen (log_domain));
- if (in_recursion)
- write (fd, "-LOG (recursed:", 15);
- else
- write (fd, "-LOG (", 6);
+ safe = *(p + 1) == '\n';
}
- else if (in_recursion)
- write (fd, "LOG (recursed:", 14);
else
- write (fd, "LOG (", 5);
- if (log_level)
{
- gchar string[] = "0x00): ";
- gchar *p = string + 2;
- guint i;
-
- i = g_bit_nth_msf (log_level, -1);
- *p = i >> 4;
- p++;
- *p = '0' + (i & 0xf);
- if (*p > '9')
- *p += 'A' - '9' - 1;
+ safe = CHAR_IS_SAFE (wc);
+ }
+
+ if (!safe)
+ {
+ gchar *tmp;
+ guint pos;
+
+ pos = p - string->str;
- write (fd, string, 7);
+ /* Largest char we escape is 0x0a, so we don't have to worry
+ * about 8-digit \Uxxxxyyyy
+ */
+ tmp = g_strdup_printf ("\\u%04x", wc);
+ g_string_erase (string, pos, g_utf8_next_char (p) - p);
+ g_string_insert (string, pos, tmp);
+ g_free (tmp);
+
+ p = string->str + (pos + 6); /* Skip over escape sequence */
}
else
- write (fd, "): ", 3);
- write (fd, message, strlen (message));
- if (is_fatal)
- write (fd, "\naborting...\n", 13);
+ p = g_utf8_next_char (p);
+ }
+}
+
+/**
+ * g_log_default_handler:
+ * @log_domain: the log domain of the message
+ * @log_level: the level of the message
+ * @message: the message
+ * @unused_data: data passed from g_log() which is unused
+ *
+ * The default log handler set up by GLib; g_log_set_default_handler()
+ * allows to install an alternate default log handler.
+ * This is used if no log handler has been set for the particular log
+ * domain and log level combination. It outputs the message to stderr
+ * or stdout and if the log level is fatal it calls abort(). It automatically
+ * prints a new-line character after the message, so one does not need to be
+ * manually included in @message.
+ *
+ * The behavior of this log handler can be influenced by a number of
+ * environment variables:
+ *
+ * - `G_MESSAGES_PREFIXED`: A :-separated list of log levels for which
+ * messages should be prefixed by the program name and PID of the
+ * aplication.
+ *
+ * - `G_MESSAGES_DEBUG`: A space-separated list of log domains for
+ * which debug and informational messages are printed. By default
+ * these messages are not printed.
+ *
+ * stderr is used for levels %G_LOG_LEVEL_ERROR, %G_LOG_LEVEL_CRITICAL,
+ * %G_LOG_LEVEL_WARNING and %G_LOG_LEVEL_MESSAGE. stdout is used for
+ * the rest.
+ */
+void
+g_log_default_handler (const gchar *log_domain,
+ GLogLevelFlags log_level,
+ const gchar *message,
+ gpointer unused_data)
+{
+ gchar level_prefix[STRING_BUFFER_SIZE], *string;
+ GString *gstring;
+ int fd;
+ const gchar *domains;
+
+ if ((log_level & DEFAULT_LEVELS) || (log_level >> G_LOG_LEVEL_USER_SHIFT))
+ goto emit;
+
+ domains = g_getenv ("G_MESSAGES_DEBUG");
+ if (((log_level & INFO_LEVELS) == 0) ||
+ domains == NULL ||
+ (strcmp (domains, "all") != 0 && (!log_domain || !strstr (domains, log_domain))))
+ return;
+
+ emit:
+ /* we can be called externally with recursion for whatever reason */
+ if (log_level & G_LOG_FLAG_RECURSION)
+ {
+ _g_log_fallback_handler (log_domain, log_level, message, unused_data);
+ return;
+ }
+
+ fd = mklevel_prefix (level_prefix, log_level);
+
+ gstring = g_string_new (NULL);
+ if (log_level & ALERT_LEVELS)
+ g_string_append (gstring, "\n");
+ if (!log_domain)
+ g_string_append (gstring, "** ");
+
+ if ((g_log_msg_prefix & (log_level & G_LOG_LEVEL_MASK)) == (log_level & G_LOG_LEVEL_MASK))
+ {
+ const gchar *prg_name = g_get_prgname ();
+
+ if (!prg_name)
+ g_string_append_printf (gstring, "(process:%lu): ", (gulong)getpid ());
+ else
+ g_string_append_printf (gstring, "(%s:%lu): ", prg_name, (gulong)getpid ());
+ }
+
+ if (log_domain)
+ {
+ g_string_append (gstring, log_domain);
+ g_string_append_c (gstring, '-');
+ }
+ g_string_append (gstring, level_prefix);
+
+ g_string_append (gstring, ": ");
+ if (!message)
+ g_string_append (gstring, "(NULL) message");
+ else
+ {
+ GString *msg;
+ const gchar *charset;
+
+ msg = g_string_new (message);
+ escape_string (msg);
+
+ if (g_get_charset (&charset))
+ g_string_append (gstring, msg->str); /* charset is UTF-8 already */
else
- write (fd, "\n", 1);
- break;
+ {
+ string = strdup_convert (msg->str, charset);
+ g_string_append (gstring, string);
+ g_free (string);
+ }
+
+ g_string_free (msg, TRUE);
}
+ g_string_append (gstring, "\n");
+
+ string = g_string_free (gstring, FALSE);
+
+ write_string (fd, string);
+ g_free (string);
}
+/**
+ * g_set_print_handler:
+ * @func: the new print handler
+ *
+ * Sets the print handler.
+ *
+ * Any messages passed to g_print() will be output via
+ * the new handler. The default handler simply outputs
+ * the message to stdout. By providing your own handler
+ * you can redirect the output, to a GTK+ widget or a
+ * log file for example.
+ *
+ * Returns: the old print handler
+ */
GPrintFunc
g_set_print_handler (GPrintFunc func)
{
GPrintFunc old_print_func;
-
- g_mutex_lock (g_messages_lock);
+
+ g_mutex_lock (&g_messages_lock);
old_print_func = glib_print_func;
glib_print_func = func;
- g_mutex_unlock (g_messages_lock);
-
+ g_mutex_unlock (&g_messages_lock);
+
return old_print_func;
}
+/**
+ * g_print:
+ * @format: the message format. See the printf() documentation
+ * @...: the parameters to insert into the format string
+ *
+ * Outputs a formatted message via the print handler.
+ * The default print handler simply outputs the message to stdout, without
+ * appending a trailing new-line character. Typically, @format should end with
+ * its own new-line character.
+ *
+ * g_print() should not be used from within libraries for debugging
+ * messages, since it may be redirected by applications to special
+ * purpose message windows or even files. Instead, libraries should
+ * use g_log(), or the convenience functions g_message(), g_warning()
+ * and g_error().
+ */
void
g_print (const gchar *format,
- ...)
+ ...)
{
va_list args;
gchar *string;
GPrintFunc local_glib_print_func;
-
+
g_return_if_fail (format != NULL);
-
+
va_start (args, format);
string = g_strdup_vprintf (format, args);
va_end (args);
-
- g_mutex_lock (g_messages_lock);
+
+ g_mutex_lock (&g_messages_lock);
local_glib_print_func = glib_print_func;
- g_mutex_unlock (g_messages_lock);
+ g_mutex_unlock (&g_messages_lock);
if (local_glib_print_func)
local_glib_print_func (string);
else
{
- ensure_stdout_valid ();
- fputs (string, stdout);
+ const gchar *charset;
+
+ if (g_get_charset (&charset))
+ fputs (string, stdout); /* charset is UTF-8 already */
+ else
+ {
+ gchar *lstring = strdup_convert (string, charset);
+
+ fputs (lstring, stdout);
+ g_free (lstring);
+ }
fflush (stdout);
}
g_free (string);
}
+/**
+ * g_set_printerr_handler:
+ * @func: the new error message handler
+ *
+ * Sets the handler for printing error messages.
+ *
+ * Any messages passed to g_printerr() will be output via
+ * the new handler. The default handler simply outputs the
+ * message to stderr. By providing your own handler you can
+ * redirect the output, to a GTK+ widget or a log file for
+ * example.
+ *
+ * Returns: the old error message handler
+ */
GPrintFunc
g_set_printerr_handler (GPrintFunc func)
{
GPrintFunc old_printerr_func;
-
- g_mutex_lock (g_messages_lock);
+
+ g_mutex_lock (&g_messages_lock);
old_printerr_func = glib_printerr_func;
glib_printerr_func = func;
- g_mutex_unlock (g_messages_lock);
-
+ g_mutex_unlock (&g_messages_lock);
+
return old_printerr_func;
}
+/**
+ * g_printerr:
+ * @format: the message format. See the printf() documentation
+ * @...: the parameters to insert into the format string
+ *
+ * Outputs a formatted message via the error message handler.
+ * The default handler simply outputs the message to stderr, without appending
+ * a trailing new-line character. Typically, @format should end with its own
+ * new-line character.
+ *
+ * g_printerr() should not be used from within libraries.
+ * Instead g_log() should be used, or the convenience functions
+ * g_message(), g_warning() and g_error().
+ */
void
g_printerr (const gchar *format,
- ...)
+ ...)
{
va_list args;
gchar *string;
GPrintFunc local_glib_printerr_func;
-
+
g_return_if_fail (format != NULL);
-
+
va_start (args, format);
string = g_strdup_vprintf (format, args);
va_end (args);
-
- g_mutex_lock (g_messages_lock);
+
+ g_mutex_lock (&g_messages_lock);
local_glib_printerr_func = glib_printerr_func;
- g_mutex_unlock (g_messages_lock);
+ g_mutex_unlock (&g_messages_lock);
if (local_glib_printerr_func)
local_glib_printerr_func (string);
else
{
- fputs (string, stderr);
+ const gchar *charset;
+
+ if (g_get_charset (&charset))
+ fputs (string, stderr); /* charset is UTF-8 already */
+ else
+ {
+ gchar *lstring = strdup_convert (string, charset);
+
+ fputs (lstring, stderr);
+ g_free (lstring);
+ }
fflush (stderr);
}
g_free (string);
}
-#ifndef MB_LEN_MAX
-# define MB_LEN_MAX 8
-#endif
-
-#ifndef HAVE_C99_VSNPRINTF
-
-typedef struct
-{
- guint min_width;
- guint precision;
- gboolean alternate_format, zero_padding, adjust_left, locale_grouping;
- gboolean add_space, add_sign, possible_sign, seen_precision;
- gboolean mod_half, mod_long, mod_extra_long;
-} PrintfArgSpec;
-
-static gsize
-printf_string_upper_bound (const gchar *format,
- gboolean may_warn,
- va_list args)
-{
- static const gboolean honour_longs = SIZEOF_LONG > 4 || SIZEOF_VOID_P > 4;
- gsize len = 1;
-
- if (!format)
- return len;
-
- while (*format)
- {
- register gchar c = *format++;
-
- if (c != '%')
- len += 1;
- else /* (c == '%') */
- {
- PrintfArgSpec spec = { 0, };
- gboolean seen_l = FALSE, conv_done = FALSE;
- gsize conv_len = 0;
- const gchar *spec_start = format;
-
- do
- {
- c = *format++;
- switch (c)
- {
- GDoubleIEEE754 u_double;
- guint v_uint;
- gint v_int;
- const gchar *v_string;
-
- /* beware of positional parameters
- */
- case '$':
- if (may_warn)
- g_warning (G_GNUC_PRETTY_FUNCTION
- "(): unable to handle positional parameters (%%n$)");
- len += 1024; /* try adding some safety padding */
- conv_done = TRUE;
- break;
-
- /* parse flags
- */
- case '#':
- spec.alternate_format = TRUE;
- break;
- case '0':
- spec.zero_padding = TRUE;
- break;
- case '-':
- spec.adjust_left = TRUE;
- break;
- case ' ':
- spec.add_space = TRUE;
- break;
- case '+':
- spec.add_sign = TRUE;
- break;
- case '\'':
- spec.locale_grouping = TRUE;
- break;
-
- /* parse output size specifications
- */
- case '.':
- spec.seen_precision = TRUE;
- break;
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- v_uint = c - '0';
- c = *format;
- while (c >= '0' && c <= '9')
- {
- format++;
- v_uint = v_uint * 10 + c - '0';
- c = *format;
- }
- if (spec.seen_precision)
- spec.precision = MAX (spec.precision, v_uint);
- else
- spec.min_width = MAX (spec.min_width, v_uint);
- break;
- case '*':
- v_int = va_arg (args, int);
- if (spec.seen_precision)
- {
- /* forget about negative precision */
- if (v_int >= 0)
- spec.precision = MAX (spec.precision, v_int);
- }
- else
- {
- if (v_int < 0)
- {
- v_int = - v_int;
- spec.adjust_left = TRUE;
- }
- spec.min_width = MAX (spec.min_width, v_int);
- }
- break;
-
- /* parse type modifiers
- */
- case 'h':
- spec.mod_half = TRUE;
- break;
- case 'l':
- if (!seen_l)
- {
- spec.mod_long = TRUE;
- seen_l = TRUE;
- break;
- }
- /* else, fall through */
- case 'L':
- case 'q':
- spec.mod_long = TRUE;
- spec.mod_extra_long = TRUE;
- break;
- case 'z':
- case 'Z':
-#if GLIB_SIZEOF_SIZE_T > 4
- spec.mod_long = TRUE;
- spec.mod_extra_long = TRUE;
-#endif /* GLIB_SIZEOF_SIZE_T > 4 */
- break;
- case 't':
-#if GLIB_SIZEOF_PTRDIFF_T > 4
- spec.mod_long = TRUE;
- spec.mod_extra_long = TRUE;
-#endif /* GLIB_SIZEOF_PTRDIFF_T > 4 */
- break;
- case 'j':
-#if GLIB_SIZEOF_INTMAX_T > 4
- spec.mod_long = TRUE;
- spec.mod_extra_long = TRUE;
-#endif /* GLIB_SIZEOF_INTMAX_T > 4 */
- break;
-
- /* parse output conversions
- */
- case '%':
- conv_len += 1;
- break;
- case 'O':
- case 'D':
- case 'I':
- case 'U':
- /* some C libraries feature long variants for these as well? */
- spec.mod_long = TRUE;
- /* fall through */
- case 'o':
- conv_len += 2;
- /* fall through */
- case 'd':
- case 'i':
- conv_len += 1; /* sign */
- /* fall through */
- case 'u':
- conv_len += 4;
- /* fall through */
- case 'x':
- case 'X':
- spec.possible_sign = TRUE;
- conv_len += 10;
- if (spec.mod_long && honour_longs)
- conv_len *= 2;
- if (spec.mod_extra_long)
- conv_len *= 2;
- if (spec.mod_extra_long)
- {
- (void) va_arg (args, gint64);
- }
- else if (spec.mod_long)
- (void) va_arg (args, long);
- else
- (void) va_arg (args, int);
- break;
- case 'A':
- case 'a':
- /* 0x */
- conv_len += 2;
- /* fall through */
- case 'g':
- case 'G':
- case 'e':
- case 'E':
- case 'f':
- spec.possible_sign = TRUE;
- /* n . dddddddddddddddddddddddd E +- eeee */
- conv_len += 1 + 1 + MAX (24, spec.precision) + 1 + 1 + 4;
- if (may_warn && spec.mod_extra_long)
- g_warning (G_GNUC_PRETTY_FUNCTION
- "(): unable to handle long double, collecting double only");
-#ifdef HAVE_LONG_DOUBLE
-#error need to implement special handling for long double
-#endif
- u_double.v_double = va_arg (args, double);
- /* %f can expand up to all significant digits before '.' (308) */
- if (c == 'f' &&
- u_double.mpn.biased_exponent > 0 && u_double.mpn.biased_exponent < 2047)
- {
- gint exp = u_double.mpn.biased_exponent;
-
- exp -= G_IEEE754_DOUBLE_BIAS;
- exp = exp * G_LOG_2_BASE_10 + 1;
- conv_len += ABS (exp); /* exp can be <0 */
- }
- /* some printf() implementations require extra padding for rounding */
- conv_len += 2;
- /* we can't really handle locale specific grouping here */
- if (spec.locale_grouping)
- conv_len *= 2;
- break;
- case 'C':
- spec.mod_long = TRUE;
- /* fall through */
- case 'c':
- conv_len += spec.mod_long ? MB_LEN_MAX : 1;
- (void) va_arg (args, int);
- break;
- case 'S':
- spec.mod_long = TRUE;
- /* fall through */
- case 's':
- v_string = va_arg (args, char*);
- if (!v_string)
- conv_len += 8; /* hold "(null)" */
- else if (spec.seen_precision)
- conv_len += spec.precision;
- else
- conv_len += strlen (v_string);
- conv_done = TRUE;
- if (spec.mod_long)
- {
- if (may_warn)
- g_warning (G_GNUC_PRETTY_FUNCTION
- "(): unable to handle wide char strings");
- len += 1024; /* try adding some safety padding */
- }
- break;
- case 'P': /* do we actually need this? */
- /* fall through */
- case 'p':
- spec.alternate_format = TRUE;
- conv_len += 10;
- if (honour_longs)
- conv_len *= 2;
- /* fall through */
- case 'n':
- conv_done = TRUE;
- (void) va_arg (args, void*);
- break;
- case 'm':
- /* there's not much we can do to be clever */
- v_string = g_strerror (errno);
- v_uint = v_string ? strlen (v_string) : 0;
- conv_len += MAX (256, v_uint);
- break;
-
- /* handle invalid cases
- */
- case '\000':
- /* no conversion specification, bad bad */
- conv_len += format - spec_start;
- break;
- default:
- if (may_warn)
- g_warning (G_GNUC_PRETTY_FUNCTION
- "(): unable to handle `%c' while parsing format",
- c);
- break;
- }
- conv_done |= conv_len > 0;
- }
- while (!conv_done);
- /* handle width specifications */
- conv_len = MAX (conv_len, MAX (spec.precision, spec.min_width));
- /* handle flags */
- conv_len += spec.alternate_format ? 2 : 0;
- conv_len += (spec.add_space || spec.add_sign || spec.possible_sign);
- /* finally done */
- len += conv_len;
- } /* else (c == '%') */
- } /* while (*format) */
-
- return len;
-}
-
-#endif /* !HAVE_C99_VSNPRINTF */
-
-
+/**
+ * g_printf_string_upper_bound:
+ * @format: the format string. See the printf() documentation
+ * @args: the parameters to be inserted into the format string
+ *
+ * Calculates the maximum space needed to store the output
+ * of the sprintf() function.
+ *
+ * Returns: the maximum space needed to store the formatted string
+ */
gsize
g_printf_string_upper_bound (const gchar *format,
- va_list args)
+ va_list args)
{
-#if HAVE_C99_VSNPRINTF
gchar c;
- return vsnprintf (&c, 1, format, args) + 1;
-#else
- return printf_string_upper_bound (format, TRUE, args);
-#endif
-}
-
-void
-g_messages_init (void)
-{
- g_messages_lock = g_mutex_new();
- g_log_depth = g_private_new(NULL);
+ return _g_vsnprintf (&c, 1, format, args) + 1;
}
projects / platform / upstream / glib.git / blobdiff