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py/scheduler: Add mp_sched_exception() to schedule a pending exception. 

This helper is added to properly set a pending exception, to mirror
mp_sched_schedule(), which schedules a function.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2021-04-28 10:52:19 +10:00
parent 7e549b6718
commit 7cbf826a95
5 changed files with 16 additions and 5 deletions
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1
ports/esp32/mpconfigport.h
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@ -264,6 +264,7 @@ void *esp_native_code_commit(void *, size_t, void *);
#endif
// Functions that should go in IRAM
#define MICROPY_WRAP_MP_SCHED_EXCEPTION(f) IRAM_ATTR f
#define MICROPY_WRAP_MP_KEYBOARD_INTERRUPT(f) IRAM_ATTR f
#define UINT_FMT "%u"

1
ports/esp8266/mpconfigport.h
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@ -195,6 +195,7 @@ extern const struct _mp_obj_module_t mp_module_onewire;
#define MICROPY_PY_SYS_PLATFORM "esp8266"
#define MP_FASTCODE(n) __attribute__((section(".iram0.text." #n))) n
#define MICROPY_WRAP_MP_SCHED_EXCEPTION(f) MP_FASTCODE(f)
#define MICROPY_WRAP_MP_KEYBOARD_INTERRUPT(f) MP_FASTCODE(f)
#define MICROPY_WRAP_MP_SCHED_SCHEDULE(f) MP_FASTCODE(f)

4
py/mpconfig.h
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@ -1504,6 +1504,10 @@ typedef double mp_float_t;
/*****************************************************************************/
/* Hooks for a port to wrap functions with attributes */
#ifndef MICROPY_WRAP_MP_SCHED_EXCEPTION
#define MICROPY_WRAP_MP_SCHED_EXCEPTION(f) f
#endif
#ifndef MICROPY_WRAP_MP_KEYBOARD_INTERRUPT
#define MICROPY_WRAP_MP_KEYBOARD_INTERRUPT(f) f
#endif

1
py/runtime.h
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@ -64,6 +64,7 @@ extern const byte mp_binary_op_method_name[];
void mp_init(void);
void mp_deinit(void);
void mp_sched_exception(mp_obj_t exc);
void mp_keyboard_interrupt(void);
void mp_handle_pending(bool raise_exc);
void mp_handle_pending_tail(mp_uint_t atomic_state);

14
py/scheduler.c
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@ -28,17 +28,21 @@
#include "py/runtime.h"
#if MICROPY_KBD_EXCEPTION
// This function may be called asynchronously at any time so only do the bare minimum.
void MICROPY_WRAP_MP_KEYBOARD_INTERRUPT(mp_keyboard_interrupt)(void) {
MP_STATE_VM(mp_kbd_exception).traceback_data = NULL;
MP_STATE_VM(mp_pending_exception) = MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception));
void mp_sched_exception(mp_obj_t exc) {
MP_STATE_VM(mp_pending_exception) = exc;
#if MICROPY_ENABLE_SCHEDULER
if (MP_STATE_VM(sched_state) == MP_SCHED_IDLE) {
MP_STATE_VM(sched_state) = MP_SCHED_PENDING;
}
#endif
}
#if MICROPY_KBD_EXCEPTION
// This function may be called asynchronously at any time so only do the bare minimum.
void MICROPY_WRAP_MP_KEYBOARD_INTERRUPT(mp_keyboard_interrupt)(void) {
MP_STATE_VM(mp_kbd_exception).traceback_data = NULL;
mp_sched_exception(MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception)));
}
#endif
#if MICROPY_ENABLE_SCHEDULER