| 1 | // "noscan" versions of `map` initialization routines |
| 2 | // |
| 3 | // They are used when the compiler can proof that either the keys or the values or both |
| 4 | // do not contain any pointers. Such objects can be placed in a memory area that is not |
| 5 | // scanned by the garbage collector |
| 6 | |
| 7 | module builtin |
| 8 | |
| 9 | [inline] |
| 10 | fn __malloc_at_least_one(how_many_bytes u64, noscan bool) &u8 { |
| 11 | if noscan { |
| 12 | return unsafe { malloc_noscan(__at_least_one(how_many_bytes)) } |
| 13 | } |
| 14 | return unsafe { malloc(__at_least_one(how_many_bytes)) } |
| 15 | } |
| 16 | |
| 17 | [inline] |
| 18 | fn new_dense_array_noscan(key_bytes int, key_noscan bool, value_bytes int, value_noscan bool) DenseArray { |
| 19 | cap := 8 |
| 20 | return DenseArray{ |
| 21 | key_bytes: key_bytes |
| 22 | value_bytes: value_bytes |
| 23 | cap: cap |
| 24 | len: 0 |
| 25 | deletes: 0 |
| 26 | all_deleted: 0 |
| 27 | keys: __malloc_at_least_one(u64(cap) * u64(key_bytes), key_noscan) |
| 28 | values: __malloc_at_least_one(u64(cap) * u64(value_bytes), value_noscan) |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | fn new_map_noscan_key(key_bytes int, value_bytes int, hash_fn MapHashFn, key_eq_fn MapEqFn, clone_fn MapCloneFn, free_fn MapFreeFn) map { |
| 33 | metasize := int(sizeof(u32) * (init_capicity + extra_metas_inc)) |
| 34 | // for now assume anything bigger than a pointer is a string |
| 35 | has_string_keys := key_bytes > sizeof(voidptr) |
| 36 | return map{ |
| 37 | key_bytes: key_bytes |
| 38 | value_bytes: value_bytes |
| 39 | even_index: init_even_index |
| 40 | cached_hashbits: max_cached_hashbits |
| 41 | shift: init_log_capicity |
| 42 | key_values: new_dense_array_noscan(key_bytes, true, value_bytes, false) |
| 43 | metas: unsafe { &u32(vcalloc_noscan(metasize)) } |
| 44 | extra_metas: extra_metas_inc |
| 45 | len: 0 |
| 46 | has_string_keys: has_string_keys |
| 47 | hash_fn: hash_fn |
| 48 | key_eq_fn: key_eq_fn |
| 49 | clone_fn: clone_fn |
| 50 | free_fn: free_fn |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | fn new_map_noscan_value(key_bytes int, value_bytes int, hash_fn MapHashFn, key_eq_fn MapEqFn, clone_fn MapCloneFn, free_fn MapFreeFn) map { |
| 55 | metasize := int(sizeof(u32) * (init_capicity + extra_metas_inc)) |
| 56 | // for now assume anything bigger than a pointer is a string |
| 57 | has_string_keys := key_bytes > sizeof(voidptr) |
| 58 | return map{ |
| 59 | key_bytes: key_bytes |
| 60 | value_bytes: value_bytes |
| 61 | even_index: init_even_index |
| 62 | cached_hashbits: max_cached_hashbits |
| 63 | shift: init_log_capicity |
| 64 | key_values: new_dense_array_noscan(key_bytes, false, value_bytes, true) |
| 65 | metas: unsafe { &u32(vcalloc_noscan(metasize)) } |
| 66 | extra_metas: extra_metas_inc |
| 67 | len: 0 |
| 68 | has_string_keys: has_string_keys |
| 69 | hash_fn: hash_fn |
| 70 | key_eq_fn: key_eq_fn |
| 71 | clone_fn: clone_fn |
| 72 | free_fn: free_fn |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | fn new_map_noscan_key_value(key_bytes int, value_bytes int, hash_fn MapHashFn, key_eq_fn MapEqFn, clone_fn MapCloneFn, free_fn MapFreeFn) map { |
| 77 | metasize := int(sizeof(u32) * (init_capicity + extra_metas_inc)) |
| 78 | // for now assume anything bigger than a pointer is a string |
| 79 | has_string_keys := key_bytes > sizeof(voidptr) |
| 80 | return map{ |
| 81 | key_bytes: key_bytes |
| 82 | value_bytes: value_bytes |
| 83 | even_index: init_even_index |
| 84 | cached_hashbits: max_cached_hashbits |
| 85 | shift: init_log_capicity |
| 86 | key_values: new_dense_array_noscan(key_bytes, true, value_bytes, true) |
| 87 | metas: unsafe { &u32(vcalloc_noscan(metasize)) } |
| 88 | extra_metas: extra_metas_inc |
| 89 | len: 0 |
| 90 | has_string_keys: has_string_keys |
| 91 | hash_fn: hash_fn |
| 92 | key_eq_fn: key_eq_fn |
| 93 | clone_fn: clone_fn |
| 94 | free_fn: free_fn |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | fn new_map_init_noscan_key(hash_fn MapHashFn, key_eq_fn MapEqFn, clone_fn MapCloneFn, free_fn MapFreeFn, n int, key_bytes int, value_bytes int, keys voidptr, values voidptr) map { |
| 99 | mut out := new_map_noscan_key(key_bytes, value_bytes, hash_fn, key_eq_fn, clone_fn, |
| 100 | free_fn) |
| 101 | // TODO pre-allocate n slots |
| 102 | mut pkey := &u8(keys) |
| 103 | mut pval := &u8(values) |
| 104 | for _ in 0 .. n { |
| 105 | unsafe { |
| 106 | out.set(pkey, pval) |
| 107 | pkey = pkey + key_bytes |
| 108 | pval = pval + value_bytes |
| 109 | } |
| 110 | } |
| 111 | return out |
| 112 | } |
| 113 | |
| 114 | fn new_map_init_noscan_value(hash_fn MapHashFn, key_eq_fn MapEqFn, clone_fn MapCloneFn, free_fn MapFreeFn, n int, key_bytes int, value_bytes int, keys voidptr, values voidptr) map { |
| 115 | mut out := new_map_noscan_value(key_bytes, value_bytes, hash_fn, key_eq_fn, clone_fn, |
| 116 | free_fn) |
| 117 | // TODO pre-allocate n slots |
| 118 | mut pkey := &u8(keys) |
| 119 | mut pval := &u8(values) |
| 120 | for _ in 0 .. n { |
| 121 | unsafe { |
| 122 | out.set(pkey, pval) |
| 123 | pkey = pkey + key_bytes |
| 124 | pval = pval + value_bytes |
| 125 | } |
| 126 | } |
| 127 | return out |
| 128 | } |
| 129 | |
| 130 | fn new_map_init_noscan_key_value(hash_fn MapHashFn, key_eq_fn MapEqFn, clone_fn MapCloneFn, free_fn MapFreeFn, n int, key_bytes int, value_bytes int, keys voidptr, values voidptr) map { |
| 131 | mut out := new_map_noscan_key_value(key_bytes, value_bytes, hash_fn, key_eq_fn, clone_fn, |
| 132 | free_fn) |
| 133 | // TODO pre-allocate n slots |
| 134 | mut pkey := &u8(keys) |
| 135 | mut pval := &u8(values) |
| 136 | for _ in 0 .. n { |
| 137 | unsafe { |
| 138 | out.set(pkey, pval) |
| 139 | pkey = pkey + key_bytes |
| 140 | pval = pval + value_bytes |
| 141 | } |
| 142 | } |
| 143 | return out |
| 144 | } |