NAME 
src/resources.c - Allocate and deallocate tracked resources
DESCRIPTION
Parrot Memory Management Code
static void *alloc_new_block(Interp *interpreter, size_t size, struct Memory_Pool *pool)- Allocate a new memory block. We allocate the larger of however much was asked for or the default size, whichever's larger.
static void *mem_allocate(Interp *interpreter, size_t *req_size, struct Memory_Pool *pool, size_t align_1)- Allocates memory for headers.
- Alignment problems:
align_1sets the size, but not the alignment of the memory block we are about to allocate. The alignment of this block is currently determined by thealign_1sent in by the previous allocation. See http://archive.develooper.com/perl6-internals%40perl.org/msg12310.html for details. Currently, we work around it by forcing all the*ALIGNMENT#defines in <include/parrot/file.h> to be the same.
Compaction Code
static void compact_pool(Interp *interpreter, struct Memory_Pool *pool)- Compact the buffer pool.
void Parrot_go_collect(Interp *interpreter)- Go do a GC run. This only scans the string pools and compacts them, it doesn't check for string liveness.
Parrot Re/Allocate Code
void *Parrot_reallocate(Interp *interpreter, void *from, size_t tosize)- Takes an interpreter,
a buffer pointer,
and a new size.
The buffer pointer is in as a
void *because we may take aSTRINGor something, and C doesn't subclass. void *Parrot_reallocate_string(Interp *interpreter, STRING *str, size_t tosize)- Takes an interpreter,
a
STRINGpointer, and a new size. The destination may be bigger, since we round up to the allocation quantum. void *Parrot_allocate(Interp *interpreter, void *buffer, size_t size)- Allocate exactly as much memory as they asked for.
void *Parrot_allocate_zeroed(Interp *interpreter, void *buffer, size_t size)- Just calls
Parrot_allocate(), which also returns zeroed memory. void *Parrot_allocate_string(Interp *interpreter, STRING *str, size_t size)- Allocate at least as much memory as they asked for. We round the amount up to the allocation quantum.
static struct Memory_Pool *new_memory_pool(size_t min_block, compact_f compact)- Create a new memory pool.
void Parrot_initialize_memory_pools(Interp *interpreter)- Initialize the managed memory pools.
void Parrot_destroy_memory_pools(Interp *interpreter)- Destroys the memory pools.
SEE ALSO
include/parrot/resources.h, src/memory.c.
HISTORY
Initial version by Dan on 2001.10.2.
