AC_MSG_RESULT(no)
fi
+dnl Check for __thread
+AC_MSG_CHECKING([for __thread])
+AC_LINK_IFELSE([AC_LANG_PROGRAM([#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && ((__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 1) || (__GNUC__ == 4 && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ < 2))
+#error gcc has this bug: http://gcc.gnu.org/ml/gcc-bugs/2006-09/msg02275.html
+#endif], [static __thread int p = 0])],
+[AC_DEFINE(HAVE___THREAD, 1,
+Define to 1 if compiler supports __thread)
+AC_MSG_RESULT([yes])],
+[AC_MSG_RESULT([no])])
+
dnl Check for librt
AC_MSG_CHECKING(for librt)
AC_ARG_WITH(librt,
}
#endif
+typedef void (*snd_local_error_handler_t)(const char *file, int line,
+ const char *func, int err,
+ const char *fmt, va_list arg);
+
+snd_local_error_handler_t snd_lib_error_set_local(snd_local_error_handler_t func);
+
#endif /* __ALSA_ERROR_H */
return snd_error_codes[errnum];
}
+#ifdef HAVE___THREAD
+#define TLS_PFX __thread
+#else
+#define TLS_PFX /* NOP */
+#endif
+
+static TLS_PFX snd_local_error_handler_t local_error = NULL;
+
+snd_local_error_handler_t snd_lib_error_set_local(snd_local_error_handler_t func)
+{
+ snd_local_error_handler_t old = local_error;
+ local_error = func;
+ return old;
+}
+
/**
* \brief The default error handler function.
* \param file The filename where the error was hit.
* \param fmt The message (including the format characters).
* \param ... Optional arguments.
*
- * Prints the error message including location to \c stderr.
+ * If a local error function has been installed for the current thread by
+ * \ref snd_lib_error_set_local, it is called. Otherwise, prints the error
+ * message including location to \c stderr.
*/
static void snd_lib_error_default(const char *file, int line, const char *function, int err, const char *fmt, ...)
{
va_list arg;
va_start(arg, fmt);
+ if (local_error) {
+ local_error(file, line, function, err, fmt, arg);
+ va_end(arg);
+ return;
+ }
fprintf(stderr, "ALSA lib %s:%i:(%s) ", file, line, function);
vfprintf(stderr, fmt, arg);
if (err)