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extmod/uos_dupterm: Update uos.dupterm() and helper funcs to have index.

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The uos.dupterm() signature and behaviour is updated to reflect the latest
enhancements in the docs.  It has minor backwards incompatibility in that
it no longer accepts zero arguments.

The dupterm_rx helper function is moved from esp8266 to extmod and
generalised to support multiple dupterm slots.

A port can specify multiple slots by defining the MICROPY_PY_OS_DUPTERM
config macro to an integer, being the number of slots it wants to have;
0 means to disable the dupterm feature altogether.

The unix and esp8266 ports are updated to work with the new interface and
are otherwise unchanged with respect to functionality.
crypto-aes
Damien George 5 years ago
parent e39fcda8eb
commit 37282f8fc1
8 changed files with 95 additions and 73 deletions
Show Stats Download Patch File Download Diff File

3
extmod/misc.h
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@ -35,8 +35,9 @@
MP_DECLARE_CONST_FUN_OBJ_VAR_BETWEEN(mp_uos_dupterm_obj);
#if MICROPY_PY_OS_DUPTERM
int mp_uos_dupterm_rx_chr(void);
void mp_uos_dupterm_tx_strn(const char *str, size_t len);
void mp_uos_deactivate(const char *msg, mp_obj_t exc);
void mp_uos_deactivate(size_t dupterm_idx, const char *msg, mp_obj_t exc);
#else
#define mp_uos_dupterm_tx_strn(s, l)
#endif

96
extmod/uos_dupterm.c
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@ -4,6 +4,7 @@
* The MIT License (MIT)
*
* Copyright (c) 2016 Paul Sokolovsky
* Copyright (c) 2017 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@ -31,12 +32,13 @@
#include "py/objtuple.h"
#include "py/objarray.h"
#include "py/stream.h"
#include "lib/utils/interrupt_char.h"
#if MICROPY_PY_OS_DUPTERM
void mp_uos_deactivate(const char *msg, mp_obj_t exc) {
mp_obj_t term = MP_STATE_PORT(term_obj);
MP_STATE_PORT(term_obj) = NULL;
void mp_uos_deactivate(size_t dupterm_idx, const char *msg, mp_obj_t exc) {
mp_obj_t term = MP_STATE_VM(dupterm_objs[dupterm_idx]);
MP_STATE_VM(dupterm_objs[dupterm_idx]) = MP_OBJ_NULL;
mp_printf(&mp_plat_print, msg);
if (exc != MP_OBJ_NULL) {
mp_obj_print_exception(&mp_plat_print, exc);
@ -44,48 +46,94 @@ void mp_uos_deactivate(const char *msg, mp_obj_t exc) {
mp_stream_close(term);
}
int mp_uos_dupterm_rx_chr(void) {
for (size_t idx = 0; idx < MICROPY_PY_OS_DUPTERM; ++idx) {
if (MP_STATE_VM(dupterm_objs[idx]) == MP_OBJ_NULL) {
continue;
}
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
mp_obj_t readinto_m[3];
mp_load_method(MP_STATE_VM(dupterm_objs[idx]), MP_QSTR_readinto, readinto_m);
readinto_m[2] = MP_STATE_VM(dupterm_arr_obj);
mp_obj_t res = mp_call_method_n_kw(1, 0, readinto_m);
if (res == mp_const_none) {
nlr_pop();
} else if (res == MP_OBJ_NEW_SMALL_INT(0)) {
mp_uos_deactivate(idx, "dupterm: EOF received, deactivating\n", MP_OBJ_NULL);
nlr_pop();
} else {
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(MP_STATE_VM(dupterm_arr_obj), &bufinfo, MP_BUFFER_READ);
nlr_pop();
if (*(byte*)bufinfo.buf == mp_interrupt_char) {
// Signal keyboard interrupt to be raised as soon as the VM resumes
mp_keyboard_interrupt();
return -2;
}
return *(byte*)bufinfo.buf;
}
} else {
mp_uos_deactivate(idx, "dupterm: Exception in read() method, deactivating: ", nlr.ret_val);
}
}
// No chars available
return -1;
}
void mp_uos_dupterm_tx_strn(const char *str, size_t len) {
if (MP_STATE_PORT(term_obj) != MP_OBJ_NULL) {
for (size_t idx = 0; idx < MICROPY_PY_OS_DUPTERM; ++idx) {
if (MP_STATE_VM(dupterm_objs[idx]) == MP_OBJ_NULL) {
continue;
}
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
mp_obj_t write_m[3];
mp_load_method(MP_STATE_PORT(term_obj), MP_QSTR_write, write_m);
mp_load_method(MP_STATE_VM(dupterm_objs[idx]), MP_QSTR_write, write_m);
mp_obj_array_t *arr = MP_OBJ_TO_PTR(MP_STATE_PORT(dupterm_arr_obj));
mp_obj_array_t *arr = MP_OBJ_TO_PTR(MP_STATE_VM(dupterm_arr_obj));
void *org_items = arr->items;
arr->items = (void*)str;
arr->len = len;
write_m[2] = MP_STATE_PORT(dupterm_arr_obj);
write_m[2] = MP_STATE_VM(dupterm_arr_obj);
mp_call_method_n_kw(1, 0, write_m);
arr = MP_OBJ_TO_PTR(MP_STATE_PORT(dupterm_arr_obj));
arr = MP_OBJ_TO_PTR(MP_STATE_VM(dupterm_arr_obj));
arr->items = org_items;
arr->len = 1;
nlr_pop();
} else {
mp_uos_deactivate("dupterm: Exception in write() method, deactivating: ", nlr.ret_val);
mp_uos_deactivate(idx, "dupterm: Exception in write() method, deactivating: ", nlr.ret_val);
}
}
}
STATIC mp_obj_t mp_uos_dupterm(size_t n_args, const mp_obj_t *args) {
if (n_args == 0) {
if (MP_STATE_PORT(term_obj) == MP_OBJ_NULL) {
return mp_const_none;
} else {
return MP_STATE_PORT(term_obj);
}
mp_int_t idx = 0;
if (n_args == 2) {
idx = mp_obj_get_int(args[1]);
}
if (idx < 0 || idx >= MICROPY_PY_OS_DUPTERM) {
mp_raise_ValueError("invalid dupterm index");
}
mp_obj_t previous_obj = MP_STATE_VM(dupterm_objs[idx]);
if (previous_obj == MP_OBJ_NULL) {
previous_obj = mp_const_none;
}
if (args[0] == mp_const_none) {
MP_STATE_VM(dupterm_objs[idx]) = MP_OBJ_NULL;
} else {
if (args[0] == mp_const_none) {
MP_STATE_PORT(term_obj) = MP_OBJ_NULL;
} else {
MP_STATE_PORT(term_obj) = args[0];
if (MP_STATE_PORT(dupterm_arr_obj) == MP_OBJ_NULL) {
MP_STATE_PORT(dupterm_arr_obj) = mp_obj_new_bytearray(1, "");
}
MP_STATE_VM(dupterm_objs[idx]) = args[0];
if (MP_STATE_VM(dupterm_arr_obj) == MP_OBJ_NULL) {
MP_STATE_VM(dupterm_arr_obj) = mp_obj_new_bytearray(1, "");
}
return mp_const_none;
}
return previous_obj;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_uos_dupterm_obj, 0, 1, mp_uos_dupterm);
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_uos_dupterm_obj, 1, 2, mp_uos_dupterm);
#endif

37
ports/esp8266/esp_mphal.c
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@ -155,41 +155,6 @@ void mp_hal_signal_input(void) {
#endif
}
static int call_dupterm_read(void) {
if (MP_STATE_PORT(term_obj) == NULL) {
return -1;
}
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
mp_obj_t readinto_m[3];
mp_load_method(MP_STATE_PORT(term_obj), MP_QSTR_readinto, readinto_m);
readinto_m[2] = MP_STATE_PORT(dupterm_arr_obj);
mp_obj_t res = mp_call_method_n_kw(1, 0, readinto_m);
if (res == mp_const_none) {
nlr_pop();
return -2;
}
if (res == MP_OBJ_NEW_SMALL_INT(0)) {
mp_uos_deactivate("dupterm: EOF received, deactivating\n", MP_OBJ_NULL);
nlr_pop();
return -1;
}
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(MP_STATE_PORT(dupterm_arr_obj), &bufinfo, MP_BUFFER_READ);
nlr_pop();
if (*(byte*)bufinfo.buf == mp_interrupt_char) {
mp_keyboard_interrupt();
return -2;
}
return *(byte*)bufinfo.buf;
} else {
mp_uos_deactivate("dupterm: Exception in read() method, deactivating: ", nlr.ret_val);
}
return -1;
}
STATIC void dupterm_task_handler(os_event_t *evt) {
static byte lock;
if (lock) {
@ -197,7 +162,7 @@ STATIC void dupterm_task_handler(os_event_t *evt) {
}
lock = 1;
while (1) {
int c = call_dupterm_read();
int c = mp_uos_dupterm_rx_chr();
if (c < 0) {
break;
}

2
ports/esp8266/main.c
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@ -51,8 +51,6 @@ STATIC void mp_reset(void) {
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_lib));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_));
mp_obj_list_init(mp_sys_argv, 0);
MP_STATE_PORT(term_obj) = MP_OBJ_NULL;
MP_STATE_PORT(dupterm_arr_obj) = MP_OBJ_NULL;
#if MICROPY_EMIT_XTENSA || MICROPY_EMIT_INLINE_XTENSA
extern void esp_native_code_init(void);
esp_native_code_init();

4
ports/esp8266/modules/webrepl.py
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@ -31,7 +31,9 @@ def setup_conn(port, accept_handler):
def accept_conn(listen_sock):
global client_s
cl, remote_addr = listen_sock.accept()
if uos.dupterm():
prev = uos.dupterm(None)
uos.dupterm(prev)
if prev:
print("\nConcurrent WebREPL connection from", remote_addr, "rejected")
cl.close()
return

17
ports/unix/unix_mphal.c
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@ -108,11 +108,11 @@ void mp_hal_stdio_mode_orig(void) {
#endif
#if MICROPY_PY_OS_DUPTERM
static int call_dupterm_read(void) {
static int call_dupterm_read(size_t idx) {
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
mp_obj_t read_m[3];
mp_load_method(MP_STATE_PORT(term_obj), MP_QSTR_read, read_m);
mp_load_method(MP_STATE_VM(dupterm_objs[idx]), MP_QSTR_read, read_m);
read_m[2] = MP_OBJ_NEW_SMALL_INT(1);
mp_obj_t res = mp_call_method_n_kw(1, 0, read_m);
if (res == mp_const_none) {
@ -122,18 +122,18 @@ static int call_dupterm_read(void) {
mp_get_buffer_raise(res, &bufinfo, MP_BUFFER_READ);
if (bufinfo.len == 0) {
mp_printf(&mp_plat_print, "dupterm: EOF received, deactivating\n");
MP_STATE_PORT(term_obj) = NULL;
MP_STATE_VM(dupterm_objs[idx]) = MP_OBJ_NULL;
return -1;
}
nlr_pop();
return *(byte*)bufinfo.buf;
} else {
// Temporarily disable dupterm to avoid infinite recursion
mp_obj_t save_term = MP_STATE_PORT(term_obj);
MP_STATE_PORT(term_obj) = NULL;
mp_obj_t save_term = MP_STATE_VM(dupterm_objs[idx]);
MP_STATE_VM(dupterm_objs[idx]) = NULL;
mp_printf(&mp_plat_print, "dupterm: ");
mp_obj_print_exception(&mp_plat_print, nlr.ret_val);
MP_STATE_PORT(term_obj) = save_term;
MP_STATE_VM(dupterm_objs[idx]) = save_term;
}
return -1;
@ -143,10 +143,11 @@ static int call_dupterm_read(void) {
int mp_hal_stdin_rx_chr(void) {
unsigned char c;
#if MICROPY_PY_OS_DUPTERM
if (MP_STATE_PORT(term_obj) != MP_OBJ_NULL) {
// TODO only support dupterm one slot at the moment
if (MP_STATE_VM(dupterm_objs[0]) != MP_OBJ_NULL) {
int c;
do {
c = call_dupterm_read();
c = call_dupterm_read(0);
} while (c == -2);
if (c == -1) {
goto main_term;

2
py/mpstate.h
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@ -168,7 +168,7 @@ typedef struct _mp_state_vm_t {
// root pointers for extmod
#if MICROPY_PY_OS_DUPTERM
mp_obj_t term_obj;
mp_obj_t dupterm_objs[MICROPY_PY_OS_DUPTERM];
mp_obj_t dupterm_arr_obj;
#endif

7
py/runtime.c
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@ -102,6 +102,13 @@ void mp_init(void) {
MP_STATE_VM(mp_module_builtins_override_dict) = NULL;
#endif
#if MICROPY_PY_OS_DUPTERM
for (size_t i = 0; i < MICROPY_PY_OS_DUPTERM; ++i) {
MP_STATE_VM(dupterm_objs[i]) = MP_OBJ_NULL;
}
MP_STATE_VM(dupterm_arr_obj) = MP_OBJ_NULL;
#endif
#if MICROPY_FSUSERMOUNT
// zero out the pointers to the user-mounted devices
memset(MP_STATE_VM(fs_user_mount), 0, sizeof(MP_STATE_VM(fs_user_mount)));

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