perf(mpool): Stage 2 — async I/O backends (io_uring/IOCP/kqueue/POSIX-aio/threadpool)

dist/Makefile.in

@@ -281,7 +281,7 @@ DTRACE_OBJS= @ADDITIONAL_OBJS@ @REPLACEMENT_OBJS@ @CRYPTO_OBJS@ \
 	log_stat@o@ mkpath@o@ mp_alloc@o@ mp_backup@o@ mp_bh@o@ mp_fget@o@ \
 	mp_fmethod@o@ mp_fopen@o@ mp_fput@o@ mp_fset@o@ mp_method@o@ \
 	mp_mvcc@o@ mp_region@o@ mp_register@o@ mp_resize@o@ mp_stat@o@ \
-	mp_sync@o@ mp_trickle@o@ openflags@o@ os_abort@o@ os_abs@o@ \
+	mp_sync@o@ mp_trickle@o@ openflags@o@ os_abort@o@ os_abs@o@ os_aio@o@ os_aio_iocp@o@ os_aio_kqueue@o@ os_aio_pool@o@ os_aio_posix@o@ os_aio_uring@o@ \
 	os_alloc@o@ os_atomic@o@ os_clock@o@ os_cpu@o@ os_ctime@o@ os_config@o@ \
 	os_dir@o@ os_errno@o@ os_fid@o@ os_flock@o@ os_fsync@o@ \
 	os_getenv@o@ os_handle@o@ os_map@o@ os_method@o@ os_mkdir@o@ \
@@ -2239,6 +2239,18 @@ os_abort@o@: $(srcdir)/os/os_abort.c
 	 $(CC) $(CFLAGS) $?
 os_addrinfo@o@: $(srcdir)/os/os_addrinfo.c
 	$(CC) $(CFLAGS) $?
+os_aio@o@: $(srcdir)/os/os_aio.c
+	$(CC) $(CFLAGS) $?
+os_aio_uring@o@: $(srcdir)/os/os_aio_uring.c
+	$(CC) $(CFLAGS) $?
+os_aio_posix@o@: $(srcdir)/os/os_aio_posix.c
+	$(CC) $(CFLAGS) $?
+os_aio_kqueue@o@: $(srcdir)/os/os_aio_kqueue.c
+	$(CC) $(CFLAGS) $?
+os_aio_pool@o@: $(srcdir)/os/os_aio_pool.c
+	$(CC) $(CFLAGS) $?
+os_aio_iocp@o@: $(srcdir)/os/os_aio_iocp.c
+	$(CC) $(CFLAGS) $?
 os_alloc@o@: $(srcdir)/os/os_alloc.c
 	 $(CC) $(CFLAGS) $?
 os_atomic@o@: $(srcdir)/os/os_atomic.c

dist/api_flags

@@ -213,6 +213,7 @@ DbEnv.set_flags
 	DB_DIRECT_DB			# Don't buffer databases in the OS
 	DB_DSYNC_DB			# Set O_DSYNC on the databases
 	DB_HOTBACKUP_IN_PROGRESS	# Inhibit bulk loading optimization
+	DB_MPOOL_AIO			# Use asynchronous buffer-pool writeback
 	DB_MULTIVERSION			# Multiversion concurrency control
 	DB_NOLOCKING			# Set locking/mutex behavior
 	DB_NOMMAP			# Don't mmap the underlying file

dist/config.hin

@@ -30,6 +30,15 @@
 /* Define to 1 if you have the 'abort' function. */
 #undef HAVE_ABORT
 
+/* Define to 1 to use the BSD kqueue+aio backend. */
+#undef HAVE_AIO_KQUEUE
+
+/* Define to 1 to use the POSIX aio backend. */
+#undef HAVE_AIO_POSIX
+
+/* Define to 1 to use the thread-pool AIO offload backend. */
+#undef HAVE_AIO_THREADPOOL
+
 /* Define to 1 if you have the 'atoi' function. */
 #undef HAVE_ATOI
 
@@ -189,6 +198,9 @@
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 
+/* Define to 1 to use the Linux io_uring AIO backend. */
+#undef HAVE_IO_URING
+
 /* Define to 1 if you have the 'isalpha' function. */
 #undef HAVE_ISALPHA