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, 10 insertions, 8 deletions

diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c
index 1969fc762c..5261effef9 100644
--- a/erts/emulator/beam/utils.c
+++ b/erts/emulator/beam/utils.c
@@ -46,6 +46,7 @@
 #include "erl_thr_queue.h"
 #include "erl_sched_spec_pre_alloc.h"
 #include "beam_bp.h"
+#include "erl_ptab.h"
 
 #undef M_TRIM_THRESHOLD
 #undef M_TOP_PAD
@@ -3016,12 +3017,13 @@ buf_to_intlist(Eterm** hpp, char *buf, size_t len, Eterm tail)
 **        ;
 ** 
 ** Return remaining bytes in buffer on success
-**        -1 on overflow
-**        -2 on type error (including that result would not be a whole number of bytes)
+**        ERTS_IOLIST_TO_BUF_OVERFLOW on overflow
+**        ERTS_IOLIST_TO_BUF_TYPE_ERROR on type error (including that result would not be a whole number of bytes)
 */
 
-int io_list_to_buf(Eterm obj, char* buf, int len)
+ErlDrvSizeT erts_iolist_to_buf(Eterm obj, char* buf, ErlDrvSizeT alloced_len)
 {
+    ErlDrvSizeT len = (ErlDrvSizeT) alloced_len;
     Eterm* objp;
     DECLARE_ESTACK(s);
     goto L_again;
@@ -3114,20 +3116,20 @@ int io_list_to_buf(Eterm obj, char* buf, int len)
 
  L_type_error:
     DESTROY_ESTACK(s);
-    return -2;
+    return ERTS_IOLIST_TO_BUF_TYPE_ERROR;
 
  L_overflow:
     DESTROY_ESTACK(s);
-    return -1;
+    return ERTS_IOLIST_TO_BUF_OVERFLOW;
 }
 
 /*
  * Return 0 if successful, and non-zero if unsuccessful.
  */
-int erts_iolist_size(Eterm obj, Uint* sizep)
+int erts_iolist_size(Eterm obj, ErlDrvSizeT* sizep)
 {
     Eterm* objp;
-    Uint size = 0;
+    Uint size = 0; /* Intentionally Uint due to halfword heap */
     DECLARE_ESTACK(s);
     goto L_again;
 
@@ -3179,7 +3181,7 @@ int erts_iolist_size(Eterm obj, Uint* sizep)
 #undef SAFE_ADD
 
     DESTROY_ESTACK(s);
-    *sizep = size;
+    *sizep = (ErlDrvSizeT) size;
     return ERTS_IOLIST_OK;
 
  L_overflow_error: