MDEV-14154: Remove ut_time_us()

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

storage/innobase/buf/buf0buddy.cc

@@ -594,7 +594,7 @@ buf_buddy_relocate(
 
 	if (buf_page_can_relocate(bpage)) {
 		/* Relocate the compressed page. */
-		ullint	usec = ut_time_us(NULL);
+		const ulonglong ns = my_interval_timer();
 
 		ut_a(bpage->zip.data == src);
 
@@ -612,11 +612,8 @@ buf_buddy_relocate(
 			reinterpret_cast<buf_buddy_free_t*>(src), i);
 
 		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

@@ -1,6 +1,6 @@
 /*****************************************************************************
 Copyright (C) 2013, 2015, Google Inc. All Rights Reserved.
-Copyright (c) 2014, 2018, MariaDB Corporation. All Rights Reserved.
+Copyright (c) 2014, 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 Free Software
@@ -1698,19 +1698,18 @@ fil_crypt_get_page_throttle_func(
 
 	state->crypt_stat.pages_read_from_disk++;
 
-	ullint start = ut_time_us(NULL);
+	const ulonglong start = my_interval_timer();
 	block = buf_page_get_gen(space->id, zip_size, offset,
 				 RW_X_LATCH,
 				 NULL, BUF_GET_POSSIBLY_FREED,
 				 file, line, mtr);
-	ullint 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;
@@ -2032,19 +2031,19 @@ fil_crypt_flush_space(
 		bool success = false;
 		ulint n_pages = 0;
 		ulint sum_pages = 0;
-		ullint start = ut_time_us(NULL);
+		const ulonglong start = my_interval_timer();
 
 		do {
 			success = buf_flush_list(ULINT_MAX, end_lsn, &n_pages);
 			buf_flush_wait_batch_end(NULL, BUF_FLUSH_LIST);
 			sum_pages += n_pages;
 		} while (!success && !space->is_stopping());
 
-		ullint 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

@@ -1685,13 +1685,14 @@ 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);
-
-		}  else {
+			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(trx);
 		}
 	}

storage/innobase/include/srv0mon.h

@@ -2,7 +2,7 @@
 
 Copyright (c) 2010, 2013, 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
@@ -761,7 +761,7 @@ monitor counter
 	MONITOR_CHECK_DEFINED(value);					\
 	if (MONITOR_IS_ON(monitor)) {					\
 		ullint	old_time = (value);				\
-		value = ut_time_us(NULL);				\
+		value = microsecond_interval_timer();			\
 		MONITOR_VALUE(monitor) += (mon_type_t) (value - old_time);\
 	}
 

storage/innobase/include/ut0ut.h

@@ -112,22 +112,6 @@ struct ut_when_dtor {
 #  define UT_LOW_PRIORITY_CPU() ((void)0)
 #  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 {								\
-	ullint	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)
 #endif /* !UNIV_HOTBACKUP */
 
 template <class T> T ut_min(T a, T b) { return(a < b ? a : b); }
@@ -274,16 +258,6 @@ 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 */
-UNIV_INTERN
-ullint
-ut_time_us(
-/*=======*/
-	ullint*	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

@@ -48,7 +48,7 @@ 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)
@@ -61,12 +61,10 @@ 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

@@ -2,7 +2,7 @@
 
 Copyright (c) 2005, 2016, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2012, Facebook Inc.
-Copyright (c) 2014, 2018, MariaDB Corporation.
+Copyright (c) 2014, 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 Free Software
@@ -1234,7 +1234,7 @@ page_zip_compress(
 	ulint		n_blobs	= 0;
 	byte*		storage;/* storage of uncompressed columns */
 #ifndef UNIV_HOTBACKUP
-	ullint		usec = ut_time_us(NULL);
+	const ulonglong	ns = my_interval_timer();
 #endif /* !UNIV_HOTBACKUP */
 #ifdef PAGE_ZIP_COMPRESS_DBG
 	FILE*		logfile = NULL;
@@ -1483,7 +1483,7 @@ page_zip_compress(
 			dict_index_zip_failure(index);
 		}
 
-		ullint	time_diff = ut_time_us(NULL) - usec;
+		const ullint time_diff = (my_interval_timer() - ns) / 1000;
 		page_zip_stat[page_zip->ssize - 1].compressed_usec
 			+= time_diff;
 		if (cmp_per_index_enabled) {
@@ -1551,7 +1551,7 @@ page_zip_compress(
 	}
 #endif /* PAGE_ZIP_COMPRESS_DBG */
 #ifndef UNIV_HOTBACKUP
-	ullint	time_diff = ut_time_us(NULL) - usec;
+	const ullint 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) {
@@ -3000,7 +3000,7 @@ page_zip_decompress(
 	mem_heap_t*	heap;
 	ulint*		offsets;
 #ifndef UNIV_HOTBACKUP
-	ullint		usec = ut_time_us(NULL);
+	const ulonglong	ns = my_interval_timer();
 #endif /* !UNIV_HOTBACKUP */
 
 	ut_ad(page_zip_simple_validate(page_zip));
@@ -3186,7 +3186,7 @@ page_zip_decompress(
 	page_zip_fields_free(index);
 	mem_heap_free(heap);
 #ifndef UNIV_HOTBACKUP
-	ullint	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

@@ -2232,7 +2232,7 @@ srv_master_do_active_tasks(void)
 /*============================*/
 {
 	ib_time_t	cur_time = ut_time();
-	ullint		counter_time = ut_time_us(NULL);
+	ulonglong	counter_time = microsecond_interval_timer();
 	ulint		n_evicted = 0;
 
 	/* First do the tasks that we are suppose to do at each
@@ -2261,7 +2261,7 @@ 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);
@@ -2323,9 +2323,7 @@ void
 srv_master_do_idle_tasks(void)
 /*==========================*/
 {
-	ullint	counter_time;
 	ulint	n_evicted = 0;
-
 	++srv_main_idle_loops;
 
 	MONITOR_INC(MONITOR_MASTER_IDLE_LOOPS);
@@ -2334,7 +2332,7 @@ 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(
@@ -2351,7 +2349,7 @@ 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

@@ -1,6 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 2007, 2012, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 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 Free Software
@@ -152,9 +153,8 @@ 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 */
-	ullint		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 */
 	i_s_table_cache_t innodb_trx;	/*!< innodb_trx table */
 	i_s_table_cache_t innodb_locks;	/*!< innodb_locks table */
 	i_s_table_cache_t innodb_lock_waits;/*!< innodb_lock_waits table */
@@ -475,7 +475,7 @@ fill_trx_row(
 	ut_ad(lock_mutex_own());
 
 	row->trx_id = trx->id;
-	row->trx_started = (ib_time_t) trx->start_time;
+	row->trx_started = trx->start_time;
 	row->trx_state = trx_get_que_state_str(trx);
 	row->requested_lock_row = requested_lock_row;
 	ut_ad(requested_lock_row == NULL
@@ -484,7 +484,7 @@ fill_trx_row(
 	if (trx->lock.wait_lock != NULL) {
 
 		ut_a(requested_lock_row != NULL);
-		row->trx_wait_started = (ib_time_t) trx->lock.wait_started;
+		row->trx_wait_started = trx->lock.wait_started;
 	} else {
 		ut_a(requested_lock_row == NULL);
 		row->trx_wait_started = 0;
@@ -1217,33 +1217,20 @@ 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)
 {
-	ullint	now;
-
 #ifdef UNIV_SYNC_DEBUG
 	ut_a(rw_lock_own(&cache->rw_lock, RW_LOCK_EX));
 #endif
-
-	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;
 }
 
 /*******************************************************************//**
@@ -1375,8 +1362,6 @@ trx_i_s_possibly_fetch_data_into_cache(
 /*===================================*/
 	trx_i_s_cache_t*	cache)	/*!< in/out: cache */
 {
-	ullint	now;
-
 #ifdef UNIV_SYNC_DEBUG
 	ut_a(rw_lock_own(&cache->rw_lock, RW_LOCK_EX));
 #endif
@@ -1399,8 +1384,7 @@ trx_i_s_possibly_fetch_data_into_cache(
 	lock_mutex_exit();
 
 	/* update cache last read time */
-	now = ut_time_us(NULL);
-	cache->last_read = now;
+	cache->last_read = my_interval_timer();
 
 	return(0);
 }