x = malloc(4)
y = malloc(10)
m = malloc(5)
z = malloc(4)
n = malloc(2)
w = malloc(12)
o = malloc(8)
a = malloc(4)
p = malloc(4)
b = malloc(10)
q = malloc(8)
c = malloc(2)
free(m);
free(n);
free(o);
free(p);
free(q);
freelist[0]: 0 = address of first free size 8 chunk
freelist[1]: 60 = address of first free size 12 chunk
freelist[2]: -1 = there are no free size 16 chunks
freelist[3]: -1 = there are no free size 20 chunks
.
.
.
freelist[217]: -1 = there are no free size 876 chunks
freelist[218]: 120 = address of first free size 880 chunk
freelist[219]: -1 = there are no free size 884 chunks
.
.
.
freelist[10000]: -1 = there are no free size 40004 chunks
freelist[10001]: -1 = there are no free chunks bigger than 40004 words
12121212 = the special pattern that marks an “in use” chunk
98989898 = the special pattern that marks a free chunk.
________________________
heap[0]: 8 = size of chunk
heap[1]: 12121212 = “used”
heap[2]: x
heap[3]: x
heap[4]: x
heap[5]: x
heap[6]: x
heap[7]: 8 = size of chunk_______________________
heap[8]: 12 = size of chunk
heap[9]: 12121212 = “used”
heap[10]: y
heap[11]: y
heap[12]: y
heap[13]: y
heap[14]: y
heap[15]: y
heap[16]: y
heap[17]: y
heap[18]: y
heap[19]: 12 = size of chunk _______________________
heap[20]: 8 = size of chunk
heap[21]: 98989898 = “free”
heap[22]: 36 = address of next size 8 free chunk
heap[23]: 0 = address of previous size 8 free chunk
heap[24]: –
heap[25]: –
heap[26]: –
heap[27]: 8 = size of chunk ________________________
heap[28]: 8 = size of chunk
heap[29]: 12121212 = “used”
heap[30]: z
heap[31]: z
heap[32]: z
heap[33]: z
heap[34]: z
heap[35]: 8 = size of chunk ________________________
heap[36]: 8 = size of chunk
heap[37]: 98989898 = “free”
heap[38]: 80 = address of next size 8 free chunk
heap[39]: 20 = address of previous size 8 free chunk
heap[40]: –
heap[41]: –
heap[42]: –
heap[43]: 8 = size of chunk ________________________
heap[44]: 16 = size of chunk
heap[45]: 12121212 = “used”
heap[46]: w
heap[47]: w
heap[48]: w
heap[49]: w
heap[50]: w
heap[51]: w
heap[52]: w
heap[53]: w
heap[54]: w
heap[55]: w
heap[56]: w
heap[57]: w
heap[58]: w
heap[59]: 16 = size of chunk ________________________
heap[60]: 12 = size of chunk
heap[61]: 98989898 = “free”
heap[62]: 100 = address of next size 12 free chunk
heap[63]: 0 = address of previous size 12 free chunk
heap[64]: –
heap[65]: –
heap[66]: –
heap[67]: –
heap[68]: –
heap[69]: –
heap[70]: –
heap[71]: 12 = size of chunk _______________________
heap[72]: 8 = size of chunk
heap[73]: 12121212 = “used”
heap[74]: a
heap[75]: a
heap[76]: a
heap[77]: a
heap[78]: a
heap[79]: 8 = size of chunk _______________________
heap[80]: 8 = size of chunk
heap[81]: 98989898 = “free”
heap[82]: 0 = no next size 8 free chunk
heap[83]: 36 = address of previous size 8 free chunk
heap[84]: –
heap[85]: –
heap[86]: –
heap[87]: 8 = size of chunk _______________________
heap[88]: 12 = size of chunk
heap[89]: 12121212 = “used”
heap[90]: b
heap[91]: b
heap[92]: b
heap[93]: b
heap[94]: b
heap[95]: b
heap[96]: b
heap[97]: b
heap[98]: b
heap[99]: 12 = size of chunk _____________________
heap[100]: 12 = size of chunk
heap[101]: 98989898 = “free”
heap[102]: 0 = no next size 12 free chunk
heap[103]: 60 = address of previous size 12 chunk
heap[104]: –
heap[105]: –
heap[106]: –
heap[107]: –
heap[108]: –
heap[109]: –
heap[110]: –
heap[111]: 12 = size of chunk ____________________
heap[112]: 8 = size of chunk
heap[113]: 12121212 = “used”
heap[114]: c
heap[115]: c
heap[116]: c
heap[117]: c
heap[118]: c
heap[119]: 8 = size of chunk _____________________
heap[120]: 880 = size of chunk
heap[121]: 98989898 = “free”
heap[122]: 0 = no next size 880 free chunk
heap[123]: 0 = no previous size 880 free chunk
heap[124]: –
heap[125]: –
heap[126]: –
heap[127]: –
heap[128]: –
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heap[995]: –
heap[996]: –
heap[997]: –
heap[998]: –
heap[999]: 880 = size of chunk _______________
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