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-rw-r--r--erts/emulator/drivers/common/inet_drv.c6
-rw-r--r--erts/emulator/drivers/unix/ttsl_drv.c178
-rw-r--r--erts/emulator/drivers/win32/ttsl_drv.c16
3 files changed, 178 insertions, 22 deletions
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index 3fe5dac813..b3c60f838d 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -3954,9 +3954,9 @@ static int inet_init()
if (0 != erl_drv_tsd_key_create("inet_buffer_stack_key", &buffer_stack_key))
goto error;
- ASSERT(sizeof(struct in_addr) == 4);
+ ERTS_CT_ASSERT(sizeof(struct in_addr) == 4);
# if defined(HAVE_IN6) && defined(AF_INET6)
- ASSERT(sizeof(struct in6_addr) == 16);
+ ERTS_CT_ASSERT(sizeof(struct in6_addr) == 16);
# endif
INIT_ATOM(ok);
@@ -4002,7 +4002,7 @@ static int inet_init()
#ifdef HAVE_SCTP
/* Check the size of SCTP AssocID -- currently both this driver and the
Erlang part require 32 bit: */
- ASSERT(sizeof(sctp_assoc_t)==ASSOC_ID_LEN);
+ ERTS_CT_ASSERT(sizeof(sctp_assoc_t)==ASSOC_ID_LEN);
# if defined(HAVE_SCTP_BINDX)
p_sctp_bindx = sctp_bindx;
# if defined(HAVE_SCTP_PEELOFF)
diff --git a/erts/emulator/drivers/unix/ttsl_drv.c b/erts/emulator/drivers/unix/ttsl_drv.c
index 491e0a090e..a5960716f2 100644
--- a/erts/emulator/drivers/unix/ttsl_drv.c
+++ b/erts/emulator/drivers/unix/ttsl_drv.c
@@ -32,6 +32,10 @@ static ErlDrvData ttysl_start(ErlDrvPort, char*);
#ifdef HAVE_TERMCAP /* else make an empty driver that can not be opened */
+#ifndef WANT_NONBLOCKING
+#define WANT_NONBLOCKING
+#endif
+
#include "sys.h"
#include <ctype.h>
#include <stdlib.h>
@@ -39,6 +43,7 @@ static ErlDrvData ttysl_start(ErlDrvPort, char*);
#include <string.h>
#include <signal.h>
#include <fcntl.h>
+#include <limits.h>
#include <locale.h>
#include <unistd.h>
#include <termios.h>
@@ -57,6 +62,14 @@ static ErlDrvData ttysl_start(ErlDrvPort, char*);
#include <langinfo.h>
#endif
+#if defined IOV_MAX
+#define MAXIOV IOV_MAX
+#elif defined UIO_MAXIOV
+#define MAXIOV UIO_MAXIOV
+#else
+#define MAXIOV 16
+#endif
+
#define TRUE 1
#define FALSE 0
@@ -80,12 +93,15 @@ static volatile int cols_needs_update = FALSE;
#define OP_INSC 2
#define OP_DELC 3
#define OP_BEEP 4
+#define OP_PUTC_SYNC 5
/* Control op */
#define CTRL_OP_GET_WINSIZE 100
#define CTRL_OP_GET_UNICODE_STATE 101
#define CTRL_OP_SET_UNICODE_STATE 102
-
+/* We use 1024 as the buf size as that was the default buf size of FILE streams
+ on all platforms that I checked. */
+#define TTY_BUFFSIZE 1024
static int lbuf_size = BUFSIZ;
static Uint32 *lbuf; /* The current line buffer */
@@ -113,13 +129,19 @@ static int lpos; /* The current "cursor position" in the line buf
/* Main interface functions. */
static void ttysl_stop(ErlDrvData);
static void ttysl_from_erlang(ErlDrvData, char*, ErlDrvSizeT);
+static void ttysl_to_tty(ErlDrvData, ErlDrvEvent);
+static void ttysl_flush_tty(ErlDrvData);
static void ttysl_from_tty(ErlDrvData, ErlDrvEvent);
static void ttysl_stop_select(ErlDrvEvent, void*);
static Sint16 get_sint16(char*);
static ErlDrvPort ttysl_port;
static int ttysl_fd;
-static FILE *ttysl_out;
+static int ttysl_terminate = 0;
+static int ttysl_send_ok = 0;
+static ErlDrvBinary *putcbuf;
+static int putcpos;
+static int putclen;
/* Functions that work on the line buffer. */
static int start_lbuf(void);
@@ -201,22 +223,22 @@ struct erl_drv_entry ttsl_driver_entry = {
IF_IMPL(ttysl_stop),
IF_IMPL(ttysl_from_erlang),
IF_IMPL(ttysl_from_tty),
- NULL,
- "tty_sl",
- NULL,
- NULL,
+ IF_IMPL(ttysl_to_tty),
+ "tty_sl", /* driver_name */
+ NULL, /* finish */
+ NULL, /* handle */
IF_IMPL(ttysl_control),
NULL, /* timeout */
NULL, /* outputv */
NULL, /* ready_async */
- NULL, /* flush */
+ IF_IMPL(ttysl_flush_tty),
NULL, /* call */
NULL, /* event */
ERL_DRV_EXTENDED_MARKER,
ERL_DRV_EXTENDED_MAJOR_VERSION,
ERL_DRV_EXTENDED_MINOR_VERSION,
0, /* ERL_DRV_FLAGs */
- NULL,
+ NULL, /* handle2 */
NULL, /* process_exit */
IF_IMPL(ttysl_stop_select)
};
@@ -296,8 +318,7 @@ static ErlDrvData ttysl_start(ErlDrvPort port, char* buf)
return ERL_DRV_ERROR_GENERAL;
}
- /* Open the terminal and set the terminal */
- ttysl_out = fdopen(ttysl_fd, "w");
+ SET_NONBLOCKING(ttysl_fd);
#ifdef PRIMITIVE_UTF8_CHECK
setlocale(LC_CTYPE, ""); /* Set international environment,
@@ -317,8 +338,8 @@ static ErlDrvData ttysl_start(ErlDrvPort port, char* buf)
}
#endif
DEBUGLOG(("utf8_mode is %s\n",(utf8_mode) ? "on" : "off"));
- sys_sigset(SIGCONT, cont);
- sys_sigset(SIGWINCH, winch);
+ sys_signal(SIGCONT, cont);
+ sys_signal(SIGWINCH, winch);
driver_select(port, (ErlDrvEvent)(UWord)ttysl_fd, ERL_DRV_READ|ERL_DRV_USE, 1);
ttysl_port = port;
@@ -400,12 +421,14 @@ static void ttysl_stop(ErlDrvData ttysl_data)
stop_lbuf();
stop_termcap();
tty_reset(ttysl_fd);
- driver_select(ttysl_port, (ErlDrvEvent)(UWord)ttysl_fd, ERL_DRV_READ|ERL_DRV_USE, 0);
- sys_sigset(SIGCONT, SIG_DFL);
- sys_sigset(SIGWINCH, SIG_DFL);
+ driver_select(ttysl_port, (ErlDrvEvent)(UWord)ttysl_fd,
+ ERL_DRV_WRITE|ERL_DRV_READ|ERL_DRV_USE, 0);
+ sys_signal(SIGCONT, SIG_DFL);
+ sys_signal(SIGWINCH, SIG_DFL);
}
ttysl_port = (ErlDrvPort)-1;
ttysl_fd = -1;
+ ttysl_terminate = 0;
/* return TRUE; */
}
@@ -650,10 +673,26 @@ static int check_buf_size(byte *s, int n)
static void ttysl_from_erlang(ErlDrvData ttysl_data, char* buf, ErlDrvSizeT count)
{
+ ErlDrvSizeT sz;
+
+ sz = driver_sizeq(ttysl_port);
+
+ putclen = count > TTY_BUFFSIZE ? TTY_BUFFSIZE : count;
+ putcbuf = driver_alloc_binary(putclen);
+ putcpos = 0;
+
if (lpos > MAXSIZE)
put_chars((byte*)"\n", 1);
switch (buf[0]) {
+ case OP_PUTC_SYNC:
+ /* Using sync means that we have to send an ok to the
+ controlling process for each command call. We delay
+ sending ok if the driver queue exceeds a certain size.
+ We do not set ourselves as a busy port, as this
+ could be very bad for user_drv, if it gets blocked on
+ the port_command. */
+ /* fall through */
case OP_PUTC:
DEBUGLOG(("OP: Putc(%lu)",(unsigned long) count-1));
if (check_buf_size((byte*)buf+1, count-1) == 0)
@@ -678,10 +717,104 @@ static void ttysl_from_erlang(ErlDrvData ttysl_data, char* buf, ErlDrvSizeT coun
/* Unknown op, just ignore. */
break;
}
- fflush(ttysl_out);
+
+ driver_enq_bin(ttysl_port,putcbuf,0,putcpos);
+
+ if (sz == 0) {
+ for (;;) {
+ int written, qlen;
+ SysIOVec *iov;
+
+ iov = driver_peekq(ttysl_port,&qlen);
+ if (iov)
+ written = writev(ttysl_fd, iov, qlen > MAXIOV ? MAXIOV : qlen);
+ else
+ written = 0;
+ if (written < 0) {
+ if (errno == EAGAIN) {
+ driver_select(ttysl_port,(ErlDrvEvent)(long)ttysl_fd,
+ ERL_DRV_USE|ERL_DRV_WRITE,1);
+ break;
+ } else {
+ /* we ignore all other errors */
+ break;
+ }
+ } else {
+ if (driver_deq(ttysl_port, written) == 0)
+ break;
+ }
+ }
+ }
+
+ if (buf[0] == OP_PUTC_SYNC) {
+ if (driver_sizeq(ttysl_port) > TTY_BUFFSIZE && !ttysl_terminate) {
+ /* We delay sending the ack until the buffer has been consumed */
+ ttysl_send_ok = 1;
+ } else {
+ ErlDrvTermData spec[] = {
+ ERL_DRV_PORT, driver_mk_port(ttysl_port),
+ ERL_DRV_ATOM, driver_mk_atom("ok"),
+ ERL_DRV_TUPLE, 2
+ };
+ ASSERT(ttysl_send_ok == 0);
+ erl_drv_output_term(driver_mk_port(ttysl_port), spec,
+ sizeof(spec) / sizeof(spec[0]));
+ }
+ }
+
return; /* TRUE; */
}
+static void ttysl_to_tty(ErlDrvData ttysl_data, ErlDrvEvent fd) {
+ for (;;) {
+ int written, qlen;
+ SysIOVec *iov;
+ ErlDrvSizeT sz;
+
+ iov = driver_peekq(ttysl_port,&qlen);
+ if (iov)
+ written = writev(ttysl_fd, iov, qlen > MAXIOV ? MAXIOV : qlen);
+ else
+ written = 0;
+ if (written < 0) {
+ if (errno == EAGAIN) {
+ break;
+ } else {
+ /* we ignore all other errors */
+ }
+ } else {
+ sz = driver_deq(ttysl_port, written);
+ if (sz < TTY_BUFFSIZE && ttysl_send_ok) {
+ ErlDrvTermData spec[] = {
+ ERL_DRV_PORT, driver_mk_port(ttysl_port),
+ ERL_DRV_ATOM, driver_mk_atom("ok"),
+ ERL_DRV_TUPLE, 2
+ };
+ ttysl_send_ok = 0;
+ erl_drv_output_term(driver_mk_port(ttysl_port), spec,
+ sizeof(spec) / sizeof(spec[0]));
+ }
+ if (sz == 0) {
+ driver_select(ttysl_port,(ErlDrvEvent)(long)ttysl_fd,
+ ERL_DRV_WRITE,0);
+ if (ttysl_terminate)
+ /* flush has been called, which means we should terminate
+ when queue is empty. This will not send any exit
+ message */
+ driver_failure_atom(ttysl_port, "normal");
+ break;
+ }
+ }
+ }
+
+ return;
+}
+
+static void ttysl_flush_tty(ErlDrvData ttysl_data) {
+ ttysl_terminate = 1;
+ return;
+}
+
static void ttysl_from_tty(ErlDrvData ttysl_data, ErlDrvEvent fd)
{
byte b[1024];
@@ -1070,7 +1203,14 @@ static int write_buf(Uint32 *s, int n)
/* The basic procedure for outputting one character. */
static int outc(int c)
{
- return (int)putc(c, ttysl_out);
+ putcbuf->orig_bytes[putcpos++] = c;
+ if (putcpos == putclen) {
+ driver_enq_bin(ttysl_port,putcbuf,0,putclen);
+ putcpos = 0;
+ putclen = TTY_BUFFSIZE;
+ putcbuf = driver_alloc_binary(BUFSIZ);
+ }
+ return 1;
}
static int move_cursor(int from, int to)
@@ -1318,11 +1458,11 @@ static RETSIGTYPE suspend(int sig)
exit(1);
}
- sys_sigset(sig, SIG_DFL); /* Set signal handler to default */
+ sys_signal(sig, SIG_DFL); /* Set signal handler to default */
sys_sigrelease(sig); /* Allow 'sig' to come through */
kill(getpid(), sig); /* Send ourselves the signal */
sys_sigblock(sig); /* Reset to old mask */
- sys_sigset(sig, suspend); /* Reset signal handler */
+ sys_signal(sig, suspend); /* Reset signal handler */
if (tty_set(ttysl_fd) < 0) {
fprintf(stderr,"Can't set tty raw \n");
diff --git a/erts/emulator/drivers/win32/ttsl_drv.c b/erts/emulator/drivers/win32/ttsl_drv.c
index 502cb58dfa..851c336a11 100644
--- a/erts/emulator/drivers/win32/ttsl_drv.c
+++ b/erts/emulator/drivers/win32/ttsl_drv.c
@@ -46,6 +46,7 @@ static int rows; /* Number of rows available. */
#define OP_INSC 2
#define OP_DELC 3
#define OP_BEEP 4
+#define OP_PUTC_SYNC 5
/* Control op */
#define CTRL_OP_GET_WINSIZE 100
@@ -458,6 +459,7 @@ static void ttysl_from_erlang(ErlDrvData ttysl_data, char* buf, ErlDrvSizeT coun
switch (buf[0]) {
case OP_PUTC:
+ case OP_PUTC_SYNC:
DEBUGLOG(("OP: Putc(%I64u)",(unsigned long long)count-1));
if (check_buf_size((byte*)buf+1, count-1) == 0)
return;
@@ -481,6 +483,20 @@ static void ttysl_from_erlang(ErlDrvData ttysl_data, char* buf, ErlDrvSizeT coun
/* Unknown op, just ignore. */
break;
}
+
+ if (buf[0] == OP_PUTC_SYNC) {
+ /* On windows we do a blocking write to the tty so we just
+ send the ack immidiately. If at some point in the future
+ someone has a problem with tty output being blocking
+ this has to be changed. */
+ ErlDrvTermData spec[] = {
+ ERL_DRV_PORT, driver_mk_port(ttysl_port),
+ ERL_DRV_ATOM, driver_mk_atom("ok"),
+ ERL_DRV_TUPLE, 2
+ };
+ erl_drv_output_term(driver_mk_port(ttysl_port), spec,
+ sizeof(spec) / sizeof(spec[0]));
+ }
return;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 21:18:11 +0000