/*
* Allocate a new section of memory to be used as old generation.
*/
static GCMemSection*
alloc_major_section (void)
{
GCMemSection *section;
int scan_starts;
section = sgen_alloc_os_memory_aligned (MAJOR_SECTION_SIZE, MAJOR_SECTION_SIZE, TRUE);
section->next_data = section->data = (char*)section + SGEN_SIZEOF_GC_MEM_SECTION;
g_assert (!((mword)section->data & 7));
section->size = MAJOR_SECTION_SIZE - SGEN_SIZEOF_GC_MEM_SECTION;
section->end_data = section->data + section->size;
sgen_update_heap_boundaries ((mword)section->data, (mword)section->end_data);
DEBUG (3, fprintf (gc_debug_file, "New major heap section: (%p-%p), total: %lld\n", section->data, section->end_data, (long long int)mono_gc_get_heap_size ()));
scan_starts = (section->size + SGEN_SCAN_START_SIZE - 1) / SGEN_SCAN_START_SIZE;
section->scan_starts = sgen_alloc_internal_dynamic (sizeof (char*) * scan_starts, INTERNAL_MEM_SCAN_STARTS);
section->num_scan_start = scan_starts;
section->block.role = MEMORY_ROLE_GEN1;
section->is_to_space = TRUE;
/* add to the section list */
section->block.next = section_list;
section_list = section;
++num_major_sections;
return section;
}
static void*
major_alloc_heap (mword nursery_size, mword nursery_align, int the_nursery_bits)
{
if (nursery_align)
nursery_start = sgen_alloc_os_memory_aligned (nursery_size, nursery_align, TRUE);
else
nursery_start = sgen_alloc_os_memory (nursery_size, TRUE);
nursery_end = nursery_start + nursery_size;
nursery_bits = the_nursery_bits;
return nursery_start;
}
static void*
major_alloc_heap (mword nursery_size, mword nursery_align, int the_nursery_bits)
{
if (nursery_align)
nursery_start = sgen_alloc_os_memory_aligned (nursery_size, nursery_align, SGEN_ALLOC_HEAP | SGEN_ALLOC_ACTIVATE, "nursery");
else
nursery_start = sgen_alloc_os_memory (nursery_size, SGEN_ALLOC_HEAP | SGEN_ALLOC_ACTIVATE, "nursery");
nursery_end = nursery_start + nursery_size;
nursery_bits = the_nursery_bits;
return nursery_start;
}
static SgenPinnedChunk*
alloc_pinned_chunk (SgenPinnedAllocator *alc)
{
SgenPinnedChunk *chunk;
int offset;
int size = SGEN_PINNED_CHUNK_SIZE;
chunk = sgen_alloc_os_memory_aligned (size, size, TRUE);
chunk->block.role = MEMORY_ROLE_PINNED;
sgen_update_heap_boundaries ((mword)chunk, ((mword)chunk + size));
pinned_chunk_bytes_alloced += size;
/* setup the bookeeping fields */
chunk->num_pages = size / FREELIST_PAGESIZE;
offset = G_STRUCT_OFFSET (SgenPinnedChunk, data);
chunk->page_sizes = (void*)((char*)chunk + offset);
offset += sizeof (int) * chunk->num_pages;
offset = SGEN_ALIGN_UP (offset);
chunk->free_list = (void*)((char*)chunk + offset);
offset += sizeof (void*) * SGEN_PINNED_FREELIST_NUM_SLOTS;
offset = SGEN_ALIGN_UP (offset);
chunk->start_data = (void*)((char*)chunk + offset);
/* allocate the first page to the freelist */
chunk->page_sizes [0] = PINNED_FIRST_SLOT_SIZE;
build_freelist (alc, chunk, slot_for_size (PINNED_FIRST_SLOT_SIZE), PINNED_FIRST_SLOT_SIZE,
chunk->start_data, ((char*)chunk + FREELIST_PAGESIZE));
sgen_debug_printf (4, "Allocated pinned chunk %p, size: %d\n", chunk, size);
chunk->block.next = alc->chunk_list;
alc->chunk_list = chunk;
chunk->allocator = alc;
return chunk;
}
