Merge branch 'rickard/port-optimizations/OTP-10336' into rickard/r16/port-optimizations/OTP-10336

* rickard/port-optimizations/OTP-10336:
  Change annotate level for emacs-22 in cerl
  Update etp-commands
  Add documentation on communication in Erlang
  Add support for busy port message queue
  Add driver callback epilogue
  Implement true asynchronous signaling between processes and ports
  Add erl_drv_[send|output]_term
  Move busy port flag
  Use rwlock for driver list
  Optimize management of port tasks
  Improve configuration of process and port tables
  Remove R9 compatibility features
  Use ptab functionality also for ports
  Prepare for use of ptab functionality also for ports
  Atomic port state
  Generalize process table implementation
  Implement functionality for delaying thread progress from unmanaged threads

Conflicts:
	erts/doc/src/erl_driver.xml
	erts/doc/src/erlang.xml
	erts/emulator/beam/beam_bif_load.c
	erts/emulator/beam/beam_bp.c
	erts/emulator/beam/beam_emu.c
	erts/emulator/beam/bif.c
	erts/emulator/beam/copy.c
	erts/emulator/beam/erl_alloc.c
	erts/emulator/beam/erl_alloc.types
	erts/emulator/beam/erl_bif_info.c
	erts/emulator/beam/erl_bif_port.c
	erts/emulator/beam/erl_bif_trace.c
	erts/emulator/beam/erl_init.c
	erts/emulator/beam/erl_message.c
	erts/emulator/beam/erl_port_task.c
	erts/emulator/beam/erl_process.c
	erts/emulator/beam/erl_process.h
	erts/emulator/beam/erl_process_lock.c
	erts/emulator/beam/erl_trace.c
	erts/emulator/beam/export.h
	erts/emulator/beam/global.h
	erts/emulator/beam/io.c
	erts/emulator/sys/unix/sys.c
	erts/emulator/sys/vxworks/sys.c
	erts/emulator/test/port_SUITE.erl
	erts/etc/unix/cerl.src
	erts/preloaded/ebin/erlang.beam
	erts/preloaded/ebin/prim_inet.beam
	erts/preloaded/src/prim_inet.erl
	lib/hipe/cerl/erl_bif_types.erl
	lib/kernel/doc/src/inet.xml
	lib/kernel/src/inet.erl

1 files changed, 37 insertions, 5 deletions

diff --git a/erts/emulator/beam/erl_driver.h b/erts/emulator/beam/erl_driver.h
index 771ee46d2b..046b46513f 100644
--- a/erts/emulator/beam/erl_driver.h
+++ b/erts/emulator/beam/erl_driver.h
@@ -133,7 +133,7 @@ typedef struct {
 
 #define ERL_DRV_EXTENDED_MARKER		(0xfeeeeeed)
 #define ERL_DRV_EXTENDED_MAJOR_VERSION	2
-#define ERL_DRV_EXTENDED_MINOR_VERSION	0
+#define ERL_DRV_EXTENDED_MINOR_VERSION	1
 
 /*
  * The emulator will refuse to load a driver with different major
@@ -154,6 +154,7 @@ typedef struct {
 
 #define ERL_DRV_FLAG_USE_PORT_LOCKING	(1 << 0)
 #define ERL_DRV_FLAG_SOFT_BUSY		(1 << 1)
+#define ERL_DRV_FLAG_NO_BUSY_MSGQ	(1 << 2)
 
 /*
  * Integer types
@@ -207,8 +208,8 @@ typedef struct erl_drv_binary {
 typedef struct _erl_drv_data* ErlDrvData; /* Data to be used by the driver itself. */
 #ifndef ERL_SYS_DRV
 typedef struct _erl_drv_event* ErlDrvEvent; /* An event to be selected on. */
-typedef struct _erl_drv_port* ErlDrvPort; /* A port descriptor. */
 #endif
+typedef struct _erl_drv_port* ErlDrvPort; /* A port descriptor. */
 typedef struct _erl_drv_port* ErlDrvThreadData; /* Thread data. */
 
 #if !defined(__WIN32__) && !defined(_WIN32) && !defined(_WIN32_) && !defined(USE_SELECT)
@@ -377,9 +378,18 @@ typedef struct erl_drv_entry {
     ErlDrvEntry* driver_init(void)
 #endif
 
+#define ERL_DRV_BUSY_MSGQ_DISABLED	(~((ErlDrvSizeT) 0))
+#define ERL_DRV_BUSY_MSGQ_READ_ONLY	((ErlDrvSizeT) 0)
+#define ERL_DRV_BUSY_MSGQ_LIM_MAX	(ERL_DRV_BUSY_MSGQ_DISABLED - 1)
+#define ERL_DRV_BUSY_MSGQ_LIM_MIN	((ErlDrvSizeT) 1)
+
 /*
  * These are the functions available for driver writers.
  */
+EXTERN void erl_drv_busy_msgq_limits(ErlDrvPort port,
+				     ErlDrvSizeT *low,
+				     ErlDrvSizeT *high);
+
 EXTERN int driver_select(ErlDrvPort port, ErlDrvEvent event, int mode, int on);
 EXTERN int driver_event(ErlDrvPort port, ErlDrvEvent event, 
 			ErlDrvEventData event_data);
@@ -594,11 +604,33 @@ EXTERN ErlDrvPort driver_create_port(ErlDrvPort creator_port,
 				     ErlDrvData drv_data);
 					 
 
+/*
+ * driver_output_term() is deprecated, and scheduled for removal in
+ * OTP-R17. Use erl_drv_output_term() instead. For more information
+ * see the erl_driver(3) documentation.
+ */
+EXTERN int driver_output_term(ErlDrvPort ix,
+			      ErlDrvTermData* data,
+			      int len) ERL_DRV_DEPRECATED_FUNC;
+/*
+ * driver_send_term() is deprecated, and scheduled for removal in
+ * OTP-R17. Use erl_drv_send_term() instead. For more information
+ * see the erl_driver(3) documentation.
+ */
+EXTERN int driver_send_term(ErlDrvPort ix,
+			    ErlDrvTermData to,
+			    ErlDrvTermData* data,
+			    int len) ERL_DRV_DEPRECATED_FUNC;
+
 /* output term data to the port owner */
-EXTERN int driver_output_term(ErlDrvPort ix, ErlDrvTermData* data, int len);
+EXTERN int erl_drv_output_term(ErlDrvTermData port,
+			       ErlDrvTermData* data,
+			       int len);
 /* output term data to a specific process */
-EXTERN int driver_send_term(ErlDrvPort ix, ErlDrvTermData to,
-			    ErlDrvTermData* data, int len);
+EXTERN int erl_drv_send_term(ErlDrvTermData port,
+			     ErlDrvTermData to,
+			     ErlDrvTermData* data,
+			     int len);
 
 /* Async IO functions */
 EXTERN long driver_async(ErlDrvPort ix,