Add ATTRIBUTE_NORETURN and ATTRIBUTE_COLD

ATTRIBUTE_NORETURN is supported on all platforms (MSVS and GCC-like).
It declares that a function will not return; instead, the thread or
the whole process will terminate.

ATTRIBUTE_COLD is supported starting with GCC 4.3. It declares that
a function is supposed to be executed rarely. Rarely used error-handling
functions and functions that emit messages to the error log should be
tagged such.

client/mysqltest.cc

@@ -574,15 +574,17 @@ struct st_replace *glob_replace= 0;
 void replace_strings_append(struct st_replace *rep, DYNAMIC_STRING* ds,
 const char *from, int len);
 
-static void cleanup_and_exit(int exit_code) __attribute__((noreturn));
+ATTRIBUTE_NORETURN
+static void cleanup_and_exit(int exit_code);
 
-void really_die(const char *msg) __attribute__((noreturn));
+ATTRIBUTE_NORETURN
+void really_die(const char *msg);
 void report_or_die(const char *fmt, ...) ATTRIBUTE_FORMAT(printf, 1, 2);
-void die(const char *fmt, ...) ATTRIBUTE_FORMAT(printf, 1, 2)
-  __attribute__((noreturn));
+ATTRIBUTE_NORETURN ATTRIBUTE_FORMAT(printf, 1, 2)
+void die(const char *fmt, ...);
 static void make_error_message(char *buf, size_t len, const char *fmt, va_list args);
-void abort_not_supported_test(const char *fmt, ...) ATTRIBUTE_FORMAT(printf, 1, 2)
-  __attribute__((noreturn));
+ATTRIBUTE_NORETURN ATTRIBUTE_FORMAT(printf, 1, 2)
+void abort_not_supported_test(const char *fmt, ...);
 void verbose_msg(const char *fmt, ...) ATTRIBUTE_FORMAT(printf, 1, 2);
 void log_msg(const char *fmt, ...) ATTRIBUTE_FORMAT(printf, 1, 2);
 

include/my_compiler.h

@@ -148,6 +148,29 @@ struct my_aligned_storage
 #define MY_ALIGNED(size)
 #endif
 
+#ifdef __GNUC__
+# define ATTRIBUTE_NORETURN __attribute__((noreturn))
+# if MY_GNUC_PREREQ(4,3)
+/** Starting with GCC 4.3, the "cold" attribute is used to inform the
+compiler that a function is unlikely executed.  The function is
+optimized for size rather than speed and on many targets it is placed
+into special subsection of the text section so all cold functions
+appears close together improving code locality of non-cold parts of
+program.  The paths leading to call of cold functions within code are
+marked as unlikely by the branch prediction mechanism.  optimize a
+rarely invoked function for size instead for speed. */
+#  define ATTRIBUTE_COLD __attribute__((cold))
+# endif
+#elif defined _WIN32
+# define ATTRIBUTE_NORETURN __declspec(noreturn)
+#else
+# define ATTRIBUTE_NORETURN /* empty */
+#endif
+
+#ifndef ATTRIBUTE_COLD
+# define ATTRIBUTE_COLD /* empty */
+#endif
+
 #include <my_attribute.h>
 
 #endif /* MY_COMPILER_INCLUDED */

sql/init.h

@@ -19,6 +19,6 @@
 #include "my_global.h"                          /* ulong */
 
 void unireg_init(ulong options);
-void unireg_end(void) __attribute__((noreturn));
+ATTRIBUTE_NORETURN void unireg_end(void);
 
 #endif /* INIT_INCLUDED */

sql/mysqld.cc

@@ -1570,7 +1570,7 @@ static void close_server_sock();
 static void clean_up_mutexes(void);
 static void wait_for_signal_thread_to_end(void);
 static void create_pid_file();
-static void mysqld_exit(int exit_code) __attribute__((noreturn));
+ATTRIBUTE_NORETURN static void mysqld_exit(int exit_code);
 #endif
 static void delete_pid_file(myf flags);
 static void end_ssl();

sql/mysqld.h

@@ -708,7 +708,7 @@ enum enum_query_type
 /* query_id */
 extern query_id_t global_query_id;
 
-void unireg_end(void) __attribute__((noreturn));
+ATTRIBUTE_NORETURN void unireg_end(void);
 
 /* increment query_id and return it.  */
 inline __attribute__((warn_unused_result)) query_id_t next_query_id()

storage/innobase/fil/fil0fil.cc

@@ -1005,7 +1005,7 @@ fil_flush_low(fil_space_t* space)
 @param[in]	size	desired size in number of pages
 @param[out]	success	whether the operation succeeded
 @return	whether the operation should be retried */
-static UNIV_COLD __attribute__((warn_unused_result, nonnull))
+static ATTRIBUTE_COLD __attribute__((warn_unused_result, nonnull))
 bool
 fil_space_extend_must_retry(
 	fil_space_t*	space,

storage/innobase/fsp/fsp0fsp.cc

@@ -102,7 +102,7 @@ then we will not allocate more extents
 @param[in,out]	space		tablespace
 @param[in,out]	header		tablespace header
 @param[in,out]	mtr		mini-transaction */
-static UNIV_COLD
+static ATTRIBUTE_COLD
 void
 fsp_fill_free_list(
 	bool		init_space,
@@ -899,7 +899,7 @@ data file.
 @param[in,out]	header	tablespace header
 @param[in,out]	mtr	mini-transaction
 @return true if success */
-static UNIV_COLD MY_ATTRIBUTE((warn_unused_result))
+static ATTRIBUTE_COLD __attribute__((warn_unused_result))
 bool
 fsp_try_extend_data_file_with_pages(
 	fil_space_t*	space,
@@ -932,7 +932,7 @@ fsp_try_extend_data_file_with_pages(
 @param[in,out]	mtr	mini-transaction
 @return	number of pages added
 @retval	0 if the tablespace was not extended */
-UNIV_COLD MY_ATTRIBUTE((nonnull))
+ATTRIBUTE_COLD __attribute__((nonnull))
 static
 ulint
 fsp_try_extend_data_file(fil_space_t* space, fsp_header_t* header, mtr_t* mtr)

storage/innobase/handler/handler0alter.cc

@@ -271,7 +271,7 @@ innobase_get_int_col_max_value(
 	const Field*	field);	/*!< in: MySQL field */
 
 /* Report an InnoDB error to the client by invoking my_error(). */
-static UNIV_COLD MY_ATTRIBUTE((nonnull))
+static ATTRIBUTE_COLD __attribute__((nonnull))
 void
 my_error_innodb(
 /*============*/

storage/innobase/include/btr0btr.h

@@ -172,7 +172,7 @@ btr_corruption_report(
 /*==================*/
 	const buf_block_t*	block,	/*!< in: corrupted block */
 	const dict_index_t*	index)	/*!< in: index tree */
-	UNIV_COLD MY_ATTRIBUTE((nonnull));
+	ATTRIBUTE_COLD __attribute__((nonnull));
 
 /** Assert that a B-tree page is not corrupted.
 @param block buffer block containing a B-tree page

storage/innobase/include/dict0dict.h

@@ -1867,7 +1867,7 @@ dict_set_corrupted(
 	dict_index_t*	index,	/*!< in/out: index */
 	trx_t*		trx,	/*!< in/out: transaction */
 	const char*	ctx)	/*!< in: context */
-	UNIV_COLD MY_ATTRIBUTE((nonnull));
+	ATTRIBUTE_COLD __attribute__((nonnull));
 
 /** Flags an index corrupted in the data dictionary cache only. This
 is used mostly to mark a corrupted index when index's own dictionary

storage/innobase/include/os0thread.h

@@ -128,10 +128,8 @@ os_thread_join(
 /** Exits the current thread.
 @param[in]	detach	if true, the thread will be detached right before
 exiting. If false, another thread is responsible for joining this thread */
-void
-os_thread_exit(
-	bool	detach = true)
-	UNIV_COLD MY_ATTRIBUTE((noreturn));
+ATTRIBUTE_NORETURN ATTRIBUTE_COLD
+void os_thread_exit(bool detach = true);
 
 /*****************************************************************//**
 Returns the thread identifier of current thread.

storage/innobase/include/row0log.h

@@ -101,7 +101,7 @@ row_log_online_op(
 	const dtuple_t*	tuple,	/*!< in: index tuple */
 	trx_id_t	trx_id)	/*!< in: transaction ID for insert,
 				or 0 for delete */
-	UNIV_COLD MY_ATTRIBUTE((nonnull));
+	ATTRIBUTE_COLD __attribute__((nonnull));
 
 /******************************************************//**
 Gets the error status of the online index rebuild log.
@@ -137,7 +137,7 @@ row_log_table_delete(
 	const ulint*	offsets,/*!< in: rec_get_offsets(rec,index) */
 	const byte*	sys)	/*!< in: DB_TRX_ID,DB_ROLL_PTR that should
 				be logged, or NULL to use those in rec */
-	UNIV_COLD MY_ATTRIBUTE((nonnull(1,2,3)));
+	ATTRIBUTE_COLD __attribute__((nonnull(1,2,3)));
 
 /******************************************************//**
 Logs an update operation to a table that is being rebuilt.
@@ -174,7 +174,7 @@ row_log_table_get_pk(
 	byte*		sys,	/*!< out: DB_TRX_ID,DB_ROLL_PTR for
 				row_log_table_delete(), or NULL */
 	mem_heap_t**	heap)	/*!< in/out: memory heap where allocated */
-	UNIV_COLD MY_ATTRIBUTE((nonnull(1,2,5), warn_unused_result));
+	ATTRIBUTE_COLD __attribute__((nonnull(1,2,5), warn_unused_result));
 
 /******************************************************//**
 Logs an insert to a table that is being rebuilt.
@@ -195,15 +195,15 @@ row_log_table_blob_free(
 /*====================*/
 	dict_index_t*	index,	/*!< in/out: clustered index, X-latched */
 	ulint		page_no)/*!< in: starting page number of the BLOB */
-	UNIV_COLD MY_ATTRIBUTE((nonnull));
+	ATTRIBUTE_COLD __attribute__((nonnull));
 /******************************************************//**
 Notes that a BLOB is being allocated during online ALTER TABLE. */
 void
 row_log_table_blob_alloc(
 /*=====================*/
 	dict_index_t*	index,	/*!< in/out: clustered index, X-latched */
 	ulint		page_no)/*!< in: starting page number of the BLOB */
-	UNIV_COLD MY_ATTRIBUTE((nonnull));
+	ATTRIBUTE_COLD __attribute__((nonnull));
 
 /** Apply the row_log_table log to a table upon completing rebuild.
 @param[in]	thr		query graph

storage/innobase/include/trx0undo.h

@@ -319,7 +319,7 @@ void
 trx_undo_free_prepared(
 /*===================*/
 	trx_t*	trx)	/*!< in/out: PREPARED transaction */
-	UNIV_COLD MY_ATTRIBUTE((nonnull));
+	ATTRIBUTE_COLD __attribute__((nonnull));
 
 /* Forward declaration. */
 namespace undo {

storage/innobase/include/univ.i

@@ -258,23 +258,6 @@ easy way to get it to work. See http://bugs.mysql.com/bug.php?id=52263. */
 #endif
 #endif
 
-#if defined(COMPILER_HINTS)      \
-    && defined __GNUC__                 \
-    && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ >= 3)
-
-/** Starting with GCC 4.3, the "cold" attribute is used to inform the
-compiler that a function is unlikely executed.  The function is
-optimized for size rather than speed and on many targets it is placed
-into special subsection of the text section so all cold functions
-appears close together improving code locality of non-cold parts of
-program.  The paths leading to call of cold functions within code are
-marked as unlikely by the branch prediction mechanism.  optimize a
-rarely invoked function for size instead for speed. */
-# define UNIV_COLD MY_ATTRIBUTE((cold))
-#else
-# define UNIV_COLD /* empty */
-#endif
-
 #define UNIV_INLINE static inline
 
 #define UNIV_WORD_SIZE		SIZEOF_SIZE_T

storage/innobase/include/ut0dbg.h

@@ -39,13 +39,13 @@ Created 1/30/1994 Heikki Tuuri
 
 /*************************************************************//**
 Report a failed assertion. */
+ATTRIBUTE_NORETURN ATTRIBUTE_COLD __attribute__((nonnull(2)))
 void
 ut_dbg_assertion_failed(
 /*====================*/
 	const char*	expr,	/*!< in: the failed assertion */
 	const char*	file,	/*!< in: source file containing the assertion */
-	unsigned	line)	/*!< in: line number of the assertion */
-	UNIV_COLD MY_ATTRIBUTE((nonnull(2), noreturn));
+	unsigned	line);	/*!< in: line number of the assertion */
 
 /** Abort execution if EXPR does not evaluate to nonzero.
 @param EXPR assertion expression that should hold */

storage/innobase/include/ut0ut.h

@@ -299,7 +299,7 @@ void
 ut_print_timestamp(
 /*===============*/
 	FILE*	file)	/*!< in: file where to print */
-	UNIV_COLD MY_ATTRIBUTE((nonnull));
+	ATTRIBUTE_COLD __attribute__((nonnull));
 
 #ifndef UNIV_INNOCHECKSUM
 
@@ -505,6 +505,7 @@ use this class directly, instead use one of the derived classes. */
 class logger {
 public:
 	template<typename T>
+	ATTRIBUTE_COLD
 	logger& operator<<(const T& rhs)
 	{
 		m_oss << rhs;
@@ -515,6 +516,7 @@ class logger {
 	@param[in]	buf	the buffer whose contents will be logged.
 	@param[in]	count	the length of the buffer buf.
 	@return the output stream into which buffer was written. */
+	ATTRIBUTE_COLD
 	std::ostream&
 	write(
 		const char*		buf,
@@ -527,6 +529,7 @@ class logger {
 	@param[in]	buf	the buffer whose contents will be logged.
 	@param[in]	count	the length of the buffer buf.
 	@return the output stream into which buffer was written. */
+	ATTRIBUTE_COLD
 	std::ostream&
 	write(
 		const byte*		buf,
@@ -539,6 +542,7 @@ class logger {
 protected:
 	/* This class must not be used directly, hence making the default
 	constructor protected. */
+	ATTRIBUTE_COLD
 	logger() {}
 };
 
@@ -555,20 +559,23 @@ statement.  If a named object is created, then the log message will be emitted
 only when it goes out of scope or destroyed. */
 class info : public logger {
 public:
+	ATTRIBUTE_COLD
 	~info();
 };
 
 /** The class warn is used to emit warnings.  Refer to the documentation of
 class info for further details. */
 class warn : public logger {
 public:
+	ATTRIBUTE_COLD
 	~warn();
 };
 
 /** The class error is used to emit error messages.  Refer to the
 documentation of class info for further details. */
 class error : public logger {
 public:
+	ATTRIBUTE_COLD
 	~error();
 };
 
@@ -577,17 +584,20 @@ by crashing it.  Use this class when MySQL server needs to be stopped
 immediately.  Refer to the documentation of class info for usage details. */
 class fatal : public logger {
 public:
+	ATTRIBUTE_NORETURN
 	~fatal();
 };
 
 /** Emit an error message if the given predicate is true, otherwise emit a
 warning message */
 class error_or_warn : public logger {
 public:
+	ATTRIBUTE_COLD
 	error_or_warn(bool	pred)
 	: m_error(pred)
 	{}
 
+	ATTRIBUTE_COLD
 	~error_or_warn();
 private:
 	const bool	m_error;
@@ -597,10 +607,12 @@ class error_or_warn : public logger {
 error message. */
 class fatal_or_error : public logger {
 public:
+	ATTRIBUTE_COLD
 	fatal_or_error(bool	pred)
 	: m_fatal(pred)
 	{}
 
+	ATTRIBUTE_COLD
 	~fatal_or_error();
 private:
 	const bool	m_fatal;

storage/innobase/os/os0thread.cc

@@ -174,9 +174,9 @@ os_thread_join(
 /** Exits the current thread.
 @param[in]	detach	if true, the thread will be detached right before
 exiting. If false, another thread is responsible for joining this thread */
+ATTRIBUTE_NORETURN
 void
-os_thread_exit(
-	bool	detach)
+os_thread_exit(bool detach)
 {
 #ifdef UNIV_DEBUG_THREAD_CREATION
 	ib::info() << "Thread exits, id "

storage/innobase/rem/rem0cmp.cc

@@ -158,7 +158,7 @@ TODO: Remove this function. Everything should use MYSQL_TYPE_NEWDECIMAL.
 @param[in] b_length length of b, in bytes (not UNIV_SQL_NULL)
 @return positive, 0, negative, if a is greater, equal, less than b,
 respectively */
-static UNIV_COLD
+static ATTRIBUTE_COLD
 int
 cmp_decimal(
 	const byte*	a,

storage/innobase/ut/ut0dbg.cc

@@ -30,6 +30,7 @@ Created 1/30/1994 Heikki Tuuri
 
 /*************************************************************//**
 Report a failed assertion. */
+ATTRIBUTE_NORETURN
 void
 ut_dbg_assertion_failed(
 /*====================*/

storage/innobase/ut/ut0ut.cc

@@ -834,6 +834,7 @@ error::~error()
 	sql_print_error("InnoDB: %s", m_oss.str().c_str());
 }
 
+ATTRIBUTE_NORETURN
 fatal::~fatal()
 {
 	sql_print_error("[FATAL] InnoDB: %s", m_oss.str().c_str());

storage/maria/maria_chk.c

@@ -89,7 +89,7 @@ static int sort_record_index(MARIA_SORT_PARAM *sort_param, MARIA_PAGE *page,
 			     uint sortkey, File new_file,
                              my_bool update_index);
 static my_bool write_log_record(HA_CHECK *param);
-static void my_exit(int exit_code) __attribute__ ((noreturn));
+ATTRIBUTE_NORETURN static void my_exit(int exit_code);
 
 HA_CHECK check_param;