commit - a9b4e7601cbf521026dbc67adabc41e54cc9fc50
commit + 8dfe8c9325f7a126011f97209ba797b1ef5dd171
blob - e5501eed5fb859a9ec85c5172f296884f5716946
blob + fa40c625c8ccf5891beb2fa72443c3d8fc286b38
--- README.md
+++ README.md
Run with: `python3 memtrace.py /dev/cu.XXXXX 115200`
+To make full use of this script, configure your microbit-dal as follows:
+
+```json
+{
+ "microbit-dal": {
+ "debug": 1,
+ "heap_debug": 1,
+ "panic_on_heap_full": 1
+ }
+}
+```
+
The script auto-resets the counts and output looks like:
```
+HEAP 0:
+heap_start : 0x20002950
+heap_end : 0x20003800
+heap_size : 3760
+
>> RESET HEAP COUNTERS >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
- (NUM) TOTAL [ ADDRESS] CHANGE (COMMENT)
+ (NUM) FREE [ ADDRESS] CHANGE (COMMENT)
[F:3760]
mb_total_free : 3760
mb_total_used : 0
== (001) 3704 [20002954] +56 (malloc: ALLOCATED: 56 [0x20002954])
== (002) 3684 [20002990] +20 (malloc: ALLOCATED: 20 [0x20002990])
== (003) 3636 [200029a8] +48 (malloc: ALLOCATED: 48 [0x200029a8])
-== (004) 3620 [200029dc] +16 (malloc: ALLOCATED: 16 [0x200029dc])
-== (005) 3580 [200029f0] +40 (malloc: ALLOCATED: 40 [0x200029f0])
-== (006) 3556 [20002a1c] +24 (malloc: ALLOCATED: 24 [0x20002a1c])
-== (007) 3516 [20002a38] +40 (malloc: ALLOCATED: 40 [0x20002a38])
-== (008) 3492 [20002a64] +24 (malloc: ALLOCATED: 24 [0x20002a64])
-== (009) 3484 [20002a80] +8 (malloc: ALLOCATED: 8 [0x20002a80])
-== (010) 3476 [20002a8c] +8 (malloc: ALLOCATED: 8 [0x20002a8c])
-== (011) 3384 [20002a98] +92 (malloc: ALLOCATED: 92 [0x20002a98])
-== (012) 3376 [20002af8] +8 (malloc: ALLOCATED: 8 [0x20002af8])
-== (013) 3368 [20002b04] +8 (malloc: ALLOCATED: 8 [0x20002b04])
-== (014) 3256 [20002b10] +112 (malloc: ALLOCATED: 112 [0x20002b10])
-== (015) 3216 [20002b84] +40 (malloc: ALLOCATED: 40 [0x20002b84])
-== (016) 3192 [20002bb0] +24 (malloc: ALLOCATED: 24 [0x20002bb0])
-== (017) 3179 [20002bcc] +13 (malloc: ALLOCATED: 13 [0x20002bcc])
-== (018) 3087 [20002be0] +92 (malloc: ALLOCATED: 92 [0x20002be0])
-== (019) 2995 [20002c40] +92 (malloc: ALLOCATED: 92 [0x20002c40])
-== (020) 2955 [20002ca0] +40 (malloc: ALLOCATED: 40 [0x20002ca0])
-== (021) 2915 [20002ccc] +40 (malloc: ALLOCATED: 40 [0x20002ccc])
-== (022) 2903 [20002cf8] +12 (malloc: ALLOCATED: 12 [0x20002cf8])
-== (023) 2863 [20002d08] +40 (malloc: ALLOCATED: 40 [0x20002d08])
-== (024) 2839 [20002d34] +24 (malloc: ALLOCATED: 24 [0x20002d34])
+...
== (025) 2815 [20002d50] +24 (malloc: ALLOCATED: 24 [0x20002d50])
== (026) 2591 [20002d6c] +224 (malloc: ALLOCATED: 224 [0x20002d6c])
-!! (026) WARN: free(0x0x20002d50)
-== (026) 2591 [ 0] -0 (free: 0x20002d50)
-== (026) 2581 [20002d50] +10 (malloc: ALLOCATED: 10 [0x20002d50])
-== (027) 2571 [20002e50] +10 (malloc: ALLOCATED: 10 [0x20002e50])
-== (028) 2561 [20002e60] +10 (malloc: ALLOCATED: 10 [0x20002e60])
-== (029) 2546 [20002e70] +15 (malloc: ALLOCATED: 15 [0x20002e70])
-!! (029) WARN: free(0x0x20002e60)
-== (029) 2546 [ 0] -0 (free: 0x20002e60)
-!! (029) WARN: free(0x0x20002e50)
-== (029) 2546 [ 0] -0 (free: 0x20002e50)
-== (029) 2528 [20002e50] +18 (malloc: ALLOCATED: 18 [0x20002e50])
-== (030) 2521 [20002d60] +7 (malloc: ALLOCATED: 7 [0x20002d60])
-== (031) 2515 [20002e84] +6 (malloc: ALLOCATED: 6 [0x20002e84])
-== (032) 2495 [20002e90] +20 (malloc: ALLOCATED: 20 [0x20002e90])
-== (033) 2470 [20002ea8] +25 (malloc: ALLOCATED: 25 [0x20002ea8])
-== (034) 2444 [20002ec8] +26 (malloc: ALLOCATED: 26 [0x20002ec8])
-!! (034) WARN: free(0x0x20002e50)
-== (034) 2444 [ 0] -0 (free: 0x20002e50)
-!! (034) WARN: free(0x0x20002ea8)
-== (034) 2444 [ 0] -0 (free: 0x20002ea8)
-!! (034) WARN: free(0x0x20002e90)
-== (034) 2444 [ 0] -0 (free: 0x20002e90)
-== (034) 2436 [20002e50] +8 (malloc: ALLOCATED: 8 [0x20002e50])
-== (035) 2116 [20002ee8] +320 (malloc: ALLOCATED: 320 [0x20002ee8])
-== (036) 2108 [20002e5c] +8 (malloc: ALLOCATED: 8 [0x20002e5c])
-== (036) 2088 [20002e90] +20 (malloc: ALLOCATED: 20 [0x20002e90])
-== (037) 1476 [2000302c] +612 (malloc: ALLOCATED: 612 [0x2000302c])
-== (037) 1456 [20002ea8] +20 (malloc: ALLOCATED: 20 [0x20002ea8])
-== (038) 1436 [20003294] +20 (malloc: ALLOCATED: 20 [0x20003294])
-== (039) 1400 [200032ac] +36 (malloc: ALLOCATED: 36 [0x200032ac])
-!! (039) WARN: free(0x0x20002e84)
-== (039) 1400 [ 0] -0 (free: 0x20002e84)
-!! (039) WARN: free(0x0x20002d60)
-== (039) 1400 [ 0] -0 (free: 0x20002d60)
-!! (039) WARN: free(0x0x20002ec8)
-== (039) 1400 [ 0] -0 (free: 0x20002ec8)
-!! (039) WARN: free(0x0x20002e70)
-== (039) 1400 [ 0] -0 (free: 0x20002e70)
-== (040) 1365 [20002e68] +35 (malloc: ALLOCATED: 35 [0x20002e68])
-== (041) 1344 [20002ec0] +21 (malloc: ALLOCATED: 21 [0x20002ec0])
+== (025) 2615 [20002d50] -24 (free: 0x20002d50)
+!! (025) WARN: free(0x0)
+== (025) 2615 [ 0] -0 (free: 0)
+...
+== (039) 1438 [20002ec0] +31 (malloc: ALLOCATED: 31 [0x20002ec0])
+== (038) 1478 [200032f4] -40 (free: 0x200032f4)
+== (037) 1509 [20002ec0] -31 (free: 0x20002ec0)
+== (038) 1081 [200032f4] +428 (malloc: ALLOCATED: 428 [0x200032f4])
+!! (038) : malloc(): no free block of size 1024
+HEAP ALLOCATION (% header | * data | . free)
+000000 20002950 %%%%********************************************************%%%%
+000064 20002990 ********************%%%%****************************************
+...
+001280 20002e50 ********%%%%********%%%%********************................%%%%
+001344 20002e90 ********************%%%%********************....................
+001408 20002ed0 ....................%%%%****************************************
+001472 20002f10 ****************************************************************
+...
+== Free blocks: ==
+20002e7c 16 bytes
+20002ebc 40 bytes
+200034a0 864 bytes
```
## License
