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fix: somebugs in malloc

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This commit is contained in:
Renge 2022-04-13 22:05:25 -04:00
parent 40f99b2b4b
commit ca01e05272
2 changed files with 21 additions and 27 deletions
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4
hw3/src/main.c
View File

@ -3,5 +3,9 @@
int main(int argc, char const *argv[]) int main(int argc, char const *argv[])
{ {
sf_malloc(200);
sf_malloc(250);
sf_malloc(300);
sf_show_heap();
return EXIT_SUCCESS; return EXIT_SUCCESS;
} }

24
hw3/src/sfmm.c
View File

@ -75,22 +75,6 @@ void *sf_malloc(sf_size_t size)
{ {
sf_block *header = &sf_free_list_heads[i]; sf_block *header = &sf_free_list_heads[i];
sf_block *ptr = header->body.links.next; sf_block *ptr = header->body.links.next;
if (i == index)
{
while (ptr != header)
{
if (get_block_size(ptr->header) >= min_size)
{
set_entire_header(ptr, size, get_block_size(ptr->header), 1, get_prv_alloc(ptr->header), 0, 0);
total_block_size += get_block_size(ptr->header);
add_payload(size);
return ptr->body.payload;
}
ptr = ptr->body.links.next;
}
}
else
{
while (ptr != header) while (ptr != header)
{ {
if (get_block_size(ptr->header) - min_size >= min) if (get_block_size(ptr->header) - min_size >= min)
@ -105,8 +89,14 @@ void *sf_malloc(sf_size_t size)
add_payload(size); add_payload(size);
return ptr->body.payload; return ptr->body.payload;
} }
ptr = ptr->body.links.next; else if (get_block_size(ptr->header) >= min_size)
{
set_entire_header(ptr, size, get_block_size(ptr->header), 1, get_prv_alloc(ptr->header), 0, 0);
total_block_size += get_block_size(ptr->header);
add_payload(size);
return ptr->body.payload;
} }
ptr = ptr->body.links.next;
} }
} }