Import wiredtiger: 9e5044823185feffa71e56a6593cfb92e0741a41 from branch mongodb-3.8

ref: 1a29eac4dc..9e50448231
for: 3.7.1

WT-2705       High throughput cache bound many threaded workloads can experience long latencies
WT-3725       Add statistics to locks around timestamp structures
WT-3750       Fast-path fs_directory_list of a single file.
WT-3768       Lookaside optimization: birthmarks
WT-3769       Fix a bug in reverse cursor walks with particular delete patterns and prefix compression enabled
WT-3779       Add support for string formats with WT_CURSOR::modify
WT-3800       test_wt2834_join_bloom_fix hang
WT-3806       Make sure rdtsc values move forward in time
WT-3807       clang static analysis updates
WT-3810       wt_rdtsc calibration needs to be longer and verify validity
WT-3812       debugging page output should handle complex key/value items.
WT-3816       Enable prefix compression on the lookaside table
WT-3819       clang static analysis improvements
WT-3820       Add a WT_SESSION.breakpoint method for Python debugging.
WT-3822       Update WiredTiger copyrights to 2018
WT-3824       tsc_nsec_ratio can compute to zero and cause divide by zero bug

1 files changed, 1 insertions, 15 deletions

diff --git a/src/third_party/wiredtiger/src/optrack/optrack.c b/src/third_party/wiredtiger/src/optrack/optrack.c
index 72789c4a154..4ac56391f15 100644
--- a/src/third_party/wiredtiger/src/optrack/optrack.c
+++ b/src/third_party/wiredtiger/src/optrack/optrack.c
@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2014-2017 MongoDB, Inc.
+ * Copyright (c) 2014-2018 MongoDB, Inc.
  * Copyright (c) 2008-2014 WiredTiger, Inc.
  *	All rights reserved.
  *
@@ -107,17 +107,3 @@ __wt_optrack_flush_buffer(WT_SESSION_IMPL *s)
 	else
 		return (0);
 }
-
-/*
- * __wt_optrack_get_expensive_timestamp --
- *       Obtain a timestamp via a system call on platforms where obtaining it
- *       directly from the hardware register is not supported.
- */
-uint64_t
-__wt_optrack_get_expensive_timestamp(WT_SESSION_IMPL *session)
-{
-	struct timespec tsp;
-
-	__wt_epoch_raw(session, &tsp);
-	return ((uint64_t)(tsp.tv_sec * WT_BILLION + tsp.tv_nsec));
-}