diff options
Diffstat (limited to 'ext/ffi_c/AbstractMemory.c')
| -rw-r--r-- | ext/ffi_c/AbstractMemory.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/ext/ffi_c/AbstractMemory.c b/ext/ffi_c/AbstractMemory.c index 3cf16a7..3b076bb 100644 --- a/ext/ffi_c/AbstractMemory.c +++ b/ext/ffi_c/AbstractMemory.c @@ -70,7 +70,7 @@ const rb_data_type_t rbffi_abstract_memory_data_type = { /* extern */ }, // IMPORTANT: WB_PROTECTED objects must only use the RB_OBJ_WRITE() // macro to update VALUE references, as to trigger write barriers. - .flags = RUBY_TYPED_FREE_IMMEDIATELY | RUBY_TYPED_WB_PROTECTED + .flags = RUBY_TYPED_FREE_IMMEDIATELY | RUBY_TYPED_WB_PROTECTED | FFI_RUBY_TYPED_FROZEN_SHAREABLE }; static size_t @@ -316,6 +316,7 @@ static VALUE memory_clear(VALUE self) { AbstractMemory* ptr = MEMORY(self); + checkWrite(ptr); memset(ptr->address, 0, ptr->size); return self; } @@ -687,6 +688,20 @@ memory_copy_from(VALUE self, VALUE rbsrc, VALUE rblen) return self; } +/* + * call-seq: + * res.freeze + * + * Freeze the AbstractMemory object and unset the writable flag. + */ +static VALUE +memory_freeze(VALUE self) +{ + AbstractMemory* ptr = MEMORY(self); + ptr->flags &= ~MEM_WR; + return rb_call_super(0, NULL); +} + AbstractMemory* rbffi_AbstractMemory_Cast(VALUE obj, const rb_data_type_t *data_type) { @@ -1102,6 +1117,7 @@ rbffi_AbstractMemory_Init(VALUE moduleFFI) rb_define_method(classMemory, "type_size", memory_type_size, 0); rb_define_method(classMemory, "[]", memory_aref, 1); rb_define_method(classMemory, "__copy_from__", memory_copy_from, 2); + rb_define_method(classMemory, "freeze", memory_freeze, 0 ); id_to_ptr = rb_intern("to_ptr"); id_call = rb_intern("call"); |