1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
# check that we can do certain things without allocating heap memory
import micropython
import sys
def f1(a):
print(a)
def f2(a, b=2):
print(a, b)
def f3(a, b, c, d):
x1 = x2 = a
x3 = x4 = b
x5 = x6 = c
x7 = x8 = d
print(x1, x3, x5, x7, x2 + x4 + x6 + x8)
global_var = 1
# preallocate exception instance with some room for a traceback
global_exc = StopIteration()
try:
raise global_exc
except:
pass
def test():
global global_var, global_exc
global_var = 2 # set an existing global variable
for i in range(2): # for loop
f1(i) # function call
f1(i * 2 + 1) # binary operation with small ints
f1(a=i) # keyword arguments
f2(i) # default arg (second one)
f2(i, i) # 2 args
f3(1, 2, 3, 4) # function with lots of local state
# test that we can generate a traceback without allocating
global_exc.__traceback__ = None
try:
raise global_exc
except StopIteration as e:
sys.print_exception(e)
# call test() with heap allocation disabled
micropython.heap_lock()
test()
micropython.heap_unlock()
|
