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feat: implemented internl_fragmentation and peak utilization

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This commit is contained in:
Renge 2022-03-26 02:32:53 -04:00
parent f8284f05a9
commit 79c410f343
1 changed files with 33 additions and 10 deletions
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43
hw3/src/sfmm.c
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@ -15,10 +15,10 @@ static sf_block *epi;
static sf_size_t in_qklst = 0x00000001;
static sf_size_t prv_alloc = 0x00000002;
static sf_size_t alloc = 0x00000004;
// static sf_size_t total_payload = 0;
// static sf_size_t max_payload = 0;
// static sf_size_t total_block_size = 0;
static sf_size_t total_pages = 0;
static int total_payload = 0;
static int max_payload = 0;
static double total_block_size = 0;
static double total_pages = 0;
int sf_initialize();
void set_header(sf_block *block, sf_header value);
@ -46,10 +46,10 @@ sf_block *get_next_block(sf_block *block);
void remove_list(sf_block *block);
sf_size_t get_pow(sf_size_t pow);
void xor_with_magic(sf_header *header);
void add_payload(int size);
void *sf_malloc(sf_size_t size)
{
if (size == 0)
return NULL;
@ -66,6 +66,8 @@ void *sf_malloc(sf_size_t size)
sf_quick_lists[index].length -= 1;
sf_quick_lists[index].first = block->body.links.next;
set_entire_header(block, size, get_block_size(block->header), 1, get_prv_alloc(block->header), 0, 0);
total_block_size += get_block_size(block->header);
add_payload(size);
return block->body.payload;
}
@ -82,6 +84,8 @@ void *sf_malloc(sf_size_t size)
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;
@ -99,6 +103,8 @@ void *sf_malloc(sf_size_t size)
set_entire_header(ptr, size, min_size, 1, get_prv_alloc(ptr->header), 0, 0);
set_entire_header(block, 0, block_size, 0, get_prv_alloc(block->header), 0, 0);
put_block(block);
total_block_size += get_block_size(ptr->header);
add_payload(size);
return ptr->body.payload;
}
ptr = ptr->body.links.next;
@ -142,6 +148,8 @@ void sf_free(void *pp)
sf_block *block = (sf_block *)(((intptr_t)pp) - 2 * sizeof(sf_header));
valid_pointer(block);
total_block_size -= get_block_size(block->header);
add_payload(-1 * get_payload_size(block->header));
sf_size_t index = (get_block_size(block->header) - 32) / 16;
if (index < 10)
{
@ -177,16 +185,20 @@ void *sf_realloc(void *pp, sf_size_t rsize)
sf_block *new;
if ((new = sf_malloc(rsize)) == NULL)
return NULL;
new = (sf_block *)(((intptr_t)new) - 2 * sizeof(sf_header));
new = (sf_block *)(((intptr_t) new) - 2 * sizeof(sf_header));
memcpy(new->body.payload, block->body.payload, size);
sf_free(pp);
return new->body.payload;
}
else
{
total_block_size -= get_block_size(block->header);
add_payload(-1 * get_payload_size(block->header));
if (size - new_size < min)
{
set_entire_header(block, rsize, size, 1, get_prv_alloc(block->header), 0, 0);
total_block_size += get_block_size(block->header);
add_payload(rsize);
return block->body.payload;
}
else
@ -195,6 +207,8 @@ void *sf_realloc(void *pp, sf_size_t rsize)
set_entire_header(block, rsize, new_size, 1, get_prv_alloc(block->header), 0, 0);
set_entire_header(ptr, 0, get_block_size(ptr->header), 0, get_prv_alloc(ptr->header), 0, 0);
release_block(ptr);
total_block_size += get_block_size(block->header);
add_payload(rsize);
return block->body.payload;
}
}
@ -202,14 +216,23 @@ void *sf_realloc(void *pp, sf_size_t rsize)
double sf_internal_fragmentation()
{
// TO BE IMPLEMENTED
abort();
if (total_payload == 0)
return 0.0;
return total_payload / total_block_size;
}
double sf_peak_utilization()
{
// TO BE IMPLEMENTED
abort();
if (max_payload == 0)
return 0;
return max_payload / total_pages;
}
void add_payload(int size)
{
total_payload += size;
if (total_payload > max_payload)
max_payload = (double)total_payload;
}
int sf_initialize()