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esp32: Track allocated iRAM and free it on soft reset.

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This makes sure all iRAM allocated for native code is freed on soft reset.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2022-05-19 15:04:52 +10:00
parent 54ab9d23e9
commit c70f96f1c5
2 changed files with 17 additions and 0 deletions
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16
ports/esp32/main.c
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@ -152,6 +152,8 @@ soft_reset:
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_lib));
readline_init0();
MP_STATE_PORT(native_code_pointers) = MP_OBJ_NULL;
// initialise peripherals
machine_pins_init();
#if MICROPY_PY_MACHINE_I2S
@ -194,6 +196,16 @@ soft_reset_exit:
mp_thread_deinit();
#endif
// Free any native code pointers that point to iRAM.
if (MP_STATE_PORT(native_code_pointers) != MP_OBJ_NULL) {
size_t len;
mp_obj_t *items;
mp_obj_list_get(MP_STATE_PORT(native_code_pointers), &len, &items);
for (size_t i = 0; i < len; ++i) {
heap_caps_free(MP_OBJ_TO_PTR(items[i]));
}
}
gc_sweep_all();
mp_hal_stdout_tx_str("MPY: soft reboot\r\n");
@ -243,6 +255,10 @@ void *esp_native_code_commit(void *buf, size_t len, void *reloc) {
if (p == NULL) {
m_malloc_fail(len);
}
if (MP_STATE_PORT(native_code_pointers) == MP_OBJ_NULL) {
MP_STATE_PORT(native_code_pointers) = mp_obj_new_list(0, NULL);
}
mp_obj_list_append(MP_STATE_PORT(native_code_pointers), MP_OBJ_TO_PTR(p));
if (reloc) {
mp_native_relocate(reloc, buf, (uintptr_t)p);
}

1
ports/esp32/mpconfigport.h
View File

@ -152,6 +152,7 @@ struct mp_bluetooth_nimble_root_pointers_t;
mp_obj_t machine_pin_irq_handler[40]; \
struct _machine_timer_obj_t *machine_timer_obj_head; \
struct _machine_i2s_obj_t *machine_i2s_obj[I2S_NUM_MAX]; \
mp_obj_t native_code_pointers; \
MICROPY_PORT_ROOT_POINTER_BLUETOOTH_NIMBLE
// type definitions for the specific machine