// It is up to the caller to fill in the object's fields in a
// meaningful fashion!
+// Allocates memory
+inline code_block* factor_vm::allot_code_block(cell size,
+ code_block_type type) {
+ cell block_size = size + sizeof(code_block);
+ code_block* block = code->allocator->allot(block_size);
+
+ if (block == NULL) {
+ // If allocation failed, do a full GC and compact the code heap.
+ // A full GC that occurs as a result of the data heap filling up does not
+ // trigger a compaction. This setup ensures that most GCs do not compact
+ // the code heap, but if the code fills up, it probably means it will be
+ // fragmented after GC anyway, so its best to compact.
+ primitive_compact_gc();
+ block = code->allocator->allot(block_size);
+
+ // Insufficient room even after code GC, give up
+ if (block == NULL) {
+ std::cout << "Code heap used: " << code->allocator->occupied_space() << "\n";
+ std::cout << "Code heap free: " << code->allocator->free_space << "\n";
+ std::cout << "Code heap free_block_count: " << code->allocator->free_block_count << "\n";
+ std::cout << "Code heap largest_free_block: " << code->allocator->largest_free_block() << "\n";
+ std::cout << "Request : " << block_size << "\n";
+ fatal_error("Out of memory in allot_code_block", 0);
+ }
+ }
+
+ // next time we do a minor GC, we have to trace this code block, since
+ // the fields of the code_block struct might point into nursery or aging
+ this->code->write_barrier(block);
+
+ block->set_type(type);
+ return block;
+}
+
// Allocates memory
inline object* factor_vm::allot_large_object(cell type, cell size) {
// If tenured space does not have enough room, collect and compact
- cell requested_size = size + data->high_water_mark();
- if (!data->tenured->can_allot_p(requested_size)) {
+ cell required_free = size + data->high_water_mark();
+ if (!data->tenured->can_allot_p(required_free)) {
primitive_compact_gc();
// If it still won't fit, grow the heap
- if (!data->tenured->can_allot_p(requested_size)) {
- gc(collect_growing_data_heap_op, size);
+ if (!data->tenured->can_allot_p(required_free)) {
+ gc(COLLECT_GROWING_DATA_HEAP_OP, size);
}
}
-
object* obj = data->tenured->allot(size);
// Allows initialization code to store old->new pointers