MDEV-14154: Remove ut_time_us()

Use microsecond_interval_timer()
or my_interval_timer() [in nanoseconds] instead.

storage/innobase/buf/buf0buddy.cc

@@ -639,7 +639,7 @@ buf_buddy_relocate(
 
 	if (buf_page_can_relocate(bpage)) {
 		/* Relocate the compressed page. */
-		uintmax_t	usec = ut_time_us(NULL);
+		const ulonglong ns = my_interval_timer();
 
 		ut_a(bpage->zip.data == src);
 
@@ -655,7 +655,7 @@ buf_buddy_relocate(
 
 		buf_buddy_stat_t*	buddy_stat = &buf_pool->buddy_stat[i];
 		buddy_stat->relocated++;
-		buddy_stat->relocated_usec += ut_time_us(NULL) - usec;
+		buddy_stat->relocated_usec+= (my_interval_timer() - ns) / 1000;
 		return(true);
 	}
 

storage/innobase/fil/fil0crypt.cc

@@ -1625,19 +1625,18 @@ fil_crypt_get_page_throttle_func(
 
 	state->crypt_stat.pages_read_from_disk++;
 
-	uintmax_t start = ut_time_us(NULL);
+	const ulonglong start = my_interval_timer();
 	block = buf_page_get_gen(page_id, page_size,
 				 RW_X_LATCH,
 				 NULL, BUF_GET_POSSIBLY_FREED,
 				file, line, mtr, &err);
-	uintmax_t end = ut_time_us(NULL);
-
-	if (end < start) {
-		end = start; // safety...
-	}
+	const ulonglong end = my_interval_timer();
 
 	state->cnt_waited++;
-	state->sum_waited_us += (end - start);
+
+	if (end > start) {
+		state->sum_waited_us += (end - start) / 1000;
+	}
 
 	/* average page load */
 	ulint add_sleeptime_ms = 0;
@@ -1961,19 +1960,19 @@ fil_crypt_flush_space(
 		bool success = false;
 		ulint n_pages = 0;
 		ulint sum_pages = 0;
-		uintmax_t start = ut_time_us(NULL);
+		const ulonglong start = my_interval_timer();
 
 		do {
 			success = buf_flush_lists(ULINT_MAX, end_lsn, &n_pages);
 			buf_flush_wait_batch_end(NULL, BUF_FLUSH_LIST);
 			sum_pages += n_pages;
 		} while (!success && !space->is_stopping());
 
-		uintmax_t end = ut_time_us(NULL);
+		const ulonglong end = my_interval_timer();
 
 		if (sum_pages && end > start) {
 			state->cnt_waited += sum_pages;
-			state->sum_waited_us += (end - start);
+			state->sum_waited_us += (end - start) / 1000;
 
 			/* statistics */
 			state->crypt_stat.pages_flushed += sum_pages;

storage/innobase/handler/ha_innodb.cc

@@ -1767,12 +1767,13 @@ innobase_srv_conc_enter_innodb(
 
 		} else if (trx->mysql_thd != NULL
 			   && thd_is_replication_slave_thread(trx->mysql_thd)) {
-
-			UT_WAIT_FOR(
-				srv_conc_get_active_threads()
-				< srv_thread_concurrency,
-				srv_replication_delay * 1000);
-
+			const ulonglong end = my_interval_timer()
+				+ ulonglong(srv_replication_delay) * 1000000;
+			while (srv_conc_get_active_threads()
+			       >= srv_thread_concurrency
+			       || my_interval_timer() >= end) {
+				os_thread_sleep(2000 /* 2 ms */);
+			}
 		} else {
 			srv_conc_enter_innodb(prebuilt);
 		}

storage/innobase/include/srv0mon.h

@@ -2,7 +2,7 @@
 
 Copyright (c) 2010, 2015, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2012, Facebook Inc.
-Copyright (c) 2013, 2017, MariaDB Corporation.
+Copyright (c) 2013, 2019, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -718,8 +718,8 @@ monitor counter
 #define	MONITOR_INC_TIME_IN_MICRO_SECS(monitor, value)			\
 	MONITOR_CHECK_DEFINED(value);					\
 	if (MONITOR_IS_ON(monitor)) {					\
-		uintmax_t	old_time = (value);				\
-		value = ut_time_us(NULL);				\
+		uintmax_t	old_time = value;			\
+		value = microsecond_interval_timer();			\
 		MONITOR_VALUE(monitor) += (mon_type_t) (value - old_time);\
 	}
 

storage/innobase/include/ut0ut.h

@@ -99,22 +99,6 @@ typedef time_t	ib_time_t;
 # define UT_RESUME_PRIORITY_CPU() ((void)0)
 #endif
 
-/*********************************************************************//**
-Delays execution for at most max_wait_us microseconds or returns earlier
-if cond becomes true.
-@param cond in: condition to wait for; evaluated every 2 ms
-@param max_wait_us in: maximum delay to wait, in microseconds */
-# define UT_WAIT_FOR(cond, max_wait_us)				\
-do {								\
-	uintmax_t	start_us;					\
-	start_us = ut_time_us(NULL);				\
-	while (!(cond)						\
-	       && ut_time_us(NULL) - start_us < (max_wait_us)) {\
-								\
-		os_thread_sleep(2000 /* 2 ms */);		\
-	}							\
-} while (0)
-
 #define ut_max	std::max
 #define ut_min	std::min
 
@@ -237,15 +221,6 @@ ut_usectime(
 	ulint*	ms);	/*!< out: microseconds since the Epoch+*sec */
 
 /**********************************************************//**
-Returns the number of microseconds since epoch. Similar to
-time(3), the return value is also stored in *tloc, provided
-that tloc is non-NULL.
-@return us since epoch */
-uintmax_t
-ut_time_us(
-/*=======*/
-	uintmax_t*	tloc);	/*!< out: us since epoch, if non-NULL */
-/**********************************************************//**
 Returns the number of milliseconds since some epoch.  The
 value may wrap around.  It should only be used for heuristic
 purposes.

storage/innobase/page/page0cur.cc

@@ -41,7 +41,7 @@ number between 0 and 2^64-1 inclusive. The formula and the constants
 being used are:
 X[n+1] = (a * X[n] + c) mod m
 where:
-X[0] = ut_time_us(NULL)
+X[0] = my_interval_timer()
 a = 1103515245 (3^5 * 5 * 7 * 129749)
 c = 12345 (3 * 5 * 823)
 m = 18446744073709551616 (2^64)
@@ -54,12 +54,10 @@ page_cur_lcg_prng(void)
 {
 #define LCG_a	1103515245
 #define LCG_c	12345
-	static ib_uint64_t	lcg_current = 0;
-	static ibool		initialized = FALSE;
+	static uint64_t	lcg_current;
 
-	if (!initialized) {
-		lcg_current = (ib_uint64_t) ut_time_us(NULL);
-		initialized = TRUE;
+	if (!lcg_current) {
+		lcg_current = my_interval_timer();
 	}
 
 	/* no need to "% 2^64" explicitly because lcg_current is

storage/innobase/page/page0zip.cc

@@ -1277,7 +1277,7 @@ page_zip_compress(
 	byte*			storage;	/* storage of uncompressed
 						columns */
 	index_id_t		ind_id;
-	uintmax_t		usec = ut_time_us(NULL);
+	const ulonglong		ns = my_interval_timer();
 #ifdef PAGE_ZIP_COMPRESS_DBG
 	FILE*			logfile = NULL;
 #endif
@@ -1564,7 +1564,7 @@ page_zip_compress(
 			dict_index_zip_failure(index);
 		}
 
-		uintmax_t	time_diff = ut_time_us(NULL) - usec;
+		const uint64_t time_diff = (my_interval_timer() - ns) / 1000;
 		page_zip_stat[page_zip->ssize - 1].compressed_usec
 			+= time_diff;
 		if (cmp_per_index_enabled) {
@@ -1630,7 +1630,7 @@ page_zip_compress(
 		fclose(logfile);
 	}
 #endif /* PAGE_ZIP_COMPRESS_DBG */
-	uintmax_t	time_diff = ut_time_us(NULL) - usec;
+	const uint64_t time_diff = (my_interval_timer() - ns) / 1000;
 	page_zip_stat[page_zip->ssize - 1].compressed_ok++;
 	page_zip_stat[page_zip->ssize - 1].compressed_usec += time_diff;
 	if (cmp_per_index_enabled) {
@@ -3250,13 +3250,13 @@ page_zip_decompress(
 				page header fields that should not change
 				after page creation */
 {
-	uintmax_t	usec = ut_time_us(NULL);
+	const ulonglong ns = my_interval_timer();
 
 	if (!page_zip_decompress_low(page_zip, page, all)) {
 		return(FALSE);
 	}
 
-	uintmax_t	time_diff = ut_time_us(NULL) - usec;
+	const uint64_t time_diff = (my_interval_timer() - ns) / 1000;
 	page_zip_stat[page_zip->ssize - 1].decompressed++;
 	page_zip_stat[page_zip->ssize - 1].decompressed_usec += time_diff;
 

storage/innobase/srv/srv0srv.cc

@@ -2194,7 +2194,7 @@ srv_master_do_active_tasks(void)
 /*============================*/
 {
 	ib_time_t	cur_time = ut_time();
-	uintmax_t	counter_time = ut_time_us(NULL);
+	ulonglong	counter_time = microsecond_interval_timer();
 
 	/* First do the tasks that we are suppose to do at each
 	invocation of this function. */
@@ -2224,7 +2224,7 @@ srv_master_do_active_tasks(void)
 
 	/* Do an ibuf merge */
 	srv_main_thread_op_info = "doing insert buffer merge";
-	counter_time = ut_time_us(NULL);
+	counter_time = microsecond_interval_timer();
 	ibuf_merge_in_background(false);
 	MONITOR_INC_TIME_IN_MICRO_SECS(
 		MONITOR_SRV_IBUF_MERGE_MICROSECOND, counter_time);
@@ -2289,8 +2289,6 @@ void
 srv_master_do_idle_tasks(void)
 /*==========================*/
 {
-	uintmax_t	counter_time;
-
 	++srv_main_idle_loops;
 
 	MONITOR_INC(MONITOR_MASTER_IDLE_LOOPS);
@@ -2299,7 +2297,7 @@ srv_master_do_idle_tasks(void)
 	/* ALTER TABLE in MySQL requires on Unix that the table handler
 	can drop tables lazily after there no longer are SELECT
 	queries to them. */
-	counter_time = ut_time_us(NULL);
+	ulonglong counter_time = microsecond_interval_timer();
 	srv_main_thread_op_info = "doing background drop tables";
 	row_drop_tables_for_mysql_in_background();
 	MONITOR_INC_TIME_IN_MICRO_SECS(
@@ -2318,7 +2316,7 @@ srv_master_do_idle_tasks(void)
 	log_free_check();
 
 	/* Do an ibuf merge */
-	counter_time = ut_time_us(NULL);
+	counter_time = microsecond_interval_timer();
 	srv_main_thread_op_info = "doing insert buffer merge";
 	ibuf_merge_in_background(true);
 	MONITOR_INC_TIME_IN_MICRO_SECS(

storage/innobase/trx/trx0i_s.cc

@@ -140,9 +140,8 @@ struct i_s_table_cache_t {
 struct trx_i_s_cache_t {
 	rw_lock_t	rw_lock;	/*!< read-write lock protecting
 					the rest of this structure */
-	uintmax_t	last_read;	/*!< last time the cache was read;
-					measured in microseconds since
-					epoch */
+	ulonglong	last_read;	/*!< last time the cache was read;
+					measured in nanoseconds */
 	ib_mutex_t		last_read_mutex;/*!< mutex protecting the
 					last_read member - it is updated
 					inside a shared lock of the
@@ -1183,22 +1182,16 @@ add_trx_relevant_locks_to_cache(
 }
 
 /** The minimum time that a cache must not be updated after it has been
-read for the last time; measured in microseconds. We use this technique
+read for the last time; measured in nanoseconds. We use this technique
 to ensure that SELECTs which join several INFORMATION SCHEMA tables read
 the same version of the cache. */
-#define CACHE_MIN_IDLE_TIME_US	100000 /* 0.1 sec */
+#define CACHE_MIN_IDLE_TIME_NS	100000000 /* 0.1 sec */
 
 /*******************************************************************//**
 Checks if the cache can safely be updated.
-@return TRUE if can be updated */
-static
-ibool
-can_cache_be_updated(
-/*=================*/
-	trx_i_s_cache_t*	cache)	/*!< in: cache */
+@return whether the cache can be updated */
+static bool can_cache_be_updated(trx_i_s_cache_t* cache)
 {
-	uintmax_t	now;
-
 	/* Here we read cache->last_read without acquiring its mutex
 	because last_read is only updated when a shared rw lock on the
 	whole cache is being held (see trx_i_s_cache_end_read()) and
@@ -1208,13 +1201,7 @@ can_cache_be_updated(
 
 	ut_ad(rw_lock_own(&cache->rw_lock, RW_LOCK_X));
 
-	now = ut_time_us(NULL);
-	if (now - cache->last_read > CACHE_MIN_IDLE_TIME_US) {
-
-		return(TRUE);
-	}
-
-	return(FALSE);
+	return my_interval_timer() - cache->last_read > CACHE_MIN_IDLE_TIME_NS;
 }
 
 /*******************************************************************//**
@@ -1358,8 +1345,7 @@ trx_i_s_possibly_fetch_data_into_cache(
 	lock_mutex_exit();
 
 	/* update cache last read time */
-	time_t now = ut_time_us(NULL);
-	cache->last_read = now;
+	cache->last_read = my_interval_timer();
 
 	return(0);
 }
@@ -1449,12 +1435,10 @@ trx_i_s_cache_end_read(
 /*===================*/
 	trx_i_s_cache_t*	cache)	/*!< in: cache */
 {
-	uintmax_t	now;
-
 	ut_ad(rw_lock_own(&cache->rw_lock, RW_LOCK_S));
 
 	/* update cache last read time */
-	now = ut_time_us(NULL);
+	const ulonglong now = my_interval_timer();
 	mutex_enter(&cache->last_read_mutex);
 	cache->last_read = now;
 	mutex_exit(&cache->last_read_mutex);

storage/innobase/ut/ut0ut.cc

@@ -144,25 +144,6 @@ ut_usectime(
 	return(ret);
 }
 
-/**********************************************************//**
-Returns the number of microseconds since epoch. Similar to
-time(3), the return value is also stored in *tloc, provided
-that tloc is non-NULL.
-@return us since epoch */
-uintmax_t
-ut_time_us(
-/*=======*/
-	uintmax_t*	tloc)	/*!< out: us since epoch, if non-NULL */
-{
-	uintmax_t us = my_interval_timer() / 1000;
-
-	if (tloc != NULL) {
-		*tloc = us;
-	}
-
-	return(us);
-}
-
 /**********************************************************//**
 Returns the number of milliseconds since some epoch.  The
 value may wrap around.  It should only be used for heuristic