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Vadapalli K Chaitanya
MallocProject
Commits
b47abd16
Commit
b47abd16
authored
Oct 13, 2020
by
Shivaji
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realloc changes for mm1 and mm2
parent
c57e5571
Changes
1
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1 changed file
with
13 additions
and
11 deletions
+13
-11
mm1.c
mm1.c
+13
-11
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mm1.c
View file @
b47abd16
...
@@ -314,14 +314,10 @@ void create_new_block_and_insert_into_freelist(block_meta_data_t *meta_data_bloc
...
@@ -314,14 +314,10 @@ void create_new_block_and_insert_into_freelist(block_meta_data_t *meta_data_bloc
if
(
meta_data_block
->
is_free
==
MM_TRUE
)
if
(
meta_data_block
->
is_free
==
MM_TRUE
)
meta_data_block
->
is_free
=
MM_FALSE
;
meta_data_block
->
is_free
=
MM_FALSE
;
if
(
c
==
0
)
if
(
c
==
0
)
{
meta_data_block
->
next_block
=
free_block
->
next_block
->
next_block
;
meta_data_block
->
next_block
=
free_block
->
next_block
->
next_block
;
}
else
else
{
meta_data_block
->
next_block
=
free_block
->
next_block
;
meta_data_block
->
next_block
=
free_block
->
next_block
;
new_block
->
block_size
=
(
uint32_t
)
final_remain
;
new_block
->
block_size
=
(
uint32_t
)
final_remain
;
}
new_block
->
free_node
=
init_free_node
();
new_block
->
free_node
=
init_free_node
();
new_block
->
is_free
=
MM_TRUE
;
new_block
->
is_free
=
MM_TRUE
;
mm_bind_blocks_for_allocation
(
meta_data_block
,
new_block
);
mm_bind_blocks_for_allocation
(
meta_data_block
,
new_block
);
...
@@ -621,6 +617,7 @@ void *mm_realloc(void *ptr, size_t size)
...
@@ -621,6 +617,7 @@ void *mm_realloc(void *ptr, size_t size)
// printf("%d %d %d\n", meta_data_block->next_block->block_size , inter_frag , (original_size-size));
// printf("%d %d %d\n", meta_data_block->next_block->block_size , inter_frag , (original_size-size));
new_block
->
block_size
=
meta_data_block
->
next_block
->
block_size
+
inter_frag
+
(
original_size
-
size
);
new_block
->
block_size
=
meta_data_block
->
next_block
->
block_size
+
inter_frag
+
(
original_size
-
size
);
// printf("%d [AFTER REALLOC]\n",new_block->block_size);
// printf("%d [AFTER REALLOC]\n",new_block->block_size);
meta_data_block
->
next_block
=
meta_data_block
->
next_block
->
next_block
;
new_block
->
is_free
=
MM_TRUE
;
new_block
->
is_free
=
MM_TRUE
;
new_block
->
free_node
=
init_free_node
();
new_block
->
free_node
=
init_free_node
();
mm_bind_blocks_for_allocation
(
meta_data_block
,
new_block
);
mm_bind_blocks_for_allocation
(
meta_data_block
,
new_block
);
...
@@ -762,36 +759,41 @@ int main(int argc,char *argv[])
...
@@ -762,36 +759,41 @@ int main(int argc,char *argv[])
{
{
mm_init
();
mm_init
();
printf
(
"[FIRST MALLOC]
\n
"
);
int
*
p1
=
mm_malloc
(
400
);
int
*
p1
=
mm_malloc
(
400
);
printf
(
"[SECOND MALLOC]
\n
"
);
void
*
p2
=
mm_malloc
(
400
);
void
*
p2
=
mm_malloc
(
400
);
// int i=0;
// int i=0;
// for(i =0;i<6;i++)
// for(i =0;i<6;i++)
// p1[i] = i;
// p1[i] = i;
printf
(
"[THIRD MALLOC]
\n
"
);
void
*
p3
=
mm_malloc
(
400
);
void
*
p3
=
mm_malloc
(
400
);
printf
(
"[FOURTH MALLOC]
\n
"
);
void
*
p4
=
mm_malloc
(
400
);
void
*
p4
=
mm_malloc
(
400
);
// block_meta_data_t *meta_data_block=(block_meta_data_t *)((char *)p3-sizeof(block_meta_data_t));
// block_meta_data_t *meta_data_block=(block_meta_data_t *)((char *)p3-sizeof(block_meta_data_t));
// meta_data_block=(block_meta_data_t *)((char *)p2-sizeof(block_meta_data_t));
// meta_data_block=(block_meta_data_t *)((char *)p2-sizeof(block_meta_data_t));
p1
=
mm_realloc
(
p1
,
32
);
printf
(
"[FIFTH MALLOC]
\n
"
);
mm_malloc
(
60
);
mm_malloc
(
60
);
// for(int j=0;j<6;j++)
// for(int j=0;j<6;j++)
// printf("%d value\n",p1[j]);
// printf("%d value\n",p1[j]);
mm_free
(
p2
);
mm_free
(
p4
);
mm_free
(
p4
);
mm_free
(
p1
);
p1
=
mm_realloc
(
p1
,
300
);
mm_free
(
p
2
);
mm_free
(
p
1
);
mm_free
(
p3
);
mm_free
(
p3
);
printf
(
"[SIXTH MALLOC]
\n
"
);
//mm_malloc(3962
);
mm_malloc
(
100
);
return
0
;
return
0
;
...
...
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