Class Hierarchy   Compound List   File List   Compound Members   File Members  

---

mm.c File Reference

dynamic memory management. More...

Functions

• size_t mm_try_join (size_t *ptr)

  check for free blocks after this one and join them if possible.

• void mm_update_first_free (size_t *start)

  update first free block pointer. More...

• void mm_init ()

  initialize memory management.

• void* malloc (size_t size)

  allocate a block of memory. More...

• void free (void *the_ptr)

  free a previously allocated block of memory. More...

• void* calloc (size_t nmemb, size_t size)

  allocate adjacent blocks of memory. More...

• void mm_reaper ()

  free all blocks allocated by the current process. More...

Variables

• size_t* mm_first_free

  first free block.

• sem_t mm_semaphore

  assures tasksafe operation.

---

Detailed Description

dynamic memory management.

Author(s):

Markus L. Noga <noga@inrialpes.fr>

---

Function Documentation

void mm_update_first_free (size_t * start)

update first free block pointer.

Parameters:

start - pointer to owner field of a memory block to start with.

void * malloc (size_t size)

allocate a block of memory.

Parameters:

size - requested block size

Returns:

0 on error, else pointer to block.

void free (void * the_ptr)

free a previously allocated block of memory.

Parameters:

the_ptr - pointer to block

ever heard of free(software_paradigm)?

void * calloc (size_t nmemb, size_t size)

allocate adjacent blocks of memory.

Parameters:

nmemb - number of blocks

size - individual block size

Returns:

0 on error, else pointer to block

void mm_reaper ()

free all blocks allocated by the current process.

called by exit() and kmain().

---

-0.1.7 is released under Mozilla Public License. Original code © 1998-1999 by Markus L. Noga.