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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| use crate::execution_engine::engine::Engine; | ||
| use crate::heap::heap::with_heap_write_lock; | ||
| use crate::method_area::java_class::JavaClass; | ||
| use crate::method_area::method_area::with_method_area; | ||
| use crate::stack::sack_value::StackValueKind; | ||
| use crate::stack::stack_frame::StackFrame; | ||
|
|
||
| pub struct Executor {} | ||
|
|
||
| impl Executor { | ||
| const STATIC_INIT_METHOD: &'static str = "<clinit>:()V"; | ||
| const INIT_METHOD: &'static str = "<init>:()V"; | ||
|
|
||
| pub fn do_static_fields_initialization(java_class: &JavaClass) -> crate::error::Result<()> { | ||
| //todo: protect me with recursive mutex | ||
| if let Some(static_init_method) = java_class.try_get_method(Self::STATIC_INIT_METHOD) { | ||
| Engine::execute( | ||
| static_init_method.new_stack_frame()?, | ||
| &format!("static initialization {}", java_class.this_class_name()), | ||
| )?; | ||
| } | ||
|
|
||
| Ok(()) | ||
| } | ||
|
|
||
| pub fn invoke_static_method( | ||
| class_name: &str, | ||
| method_name: &str, | ||
| args: &[StackValueKind], | ||
| ) -> crate::error::Result<Vec<i32>> { | ||
| let result = Self::exec(class_name, method_name, args)?; | ||
| match result { | ||
| Some(value) => Ok(value), | ||
| None => Ok(vec![]), | ||
| } | ||
| } | ||
|
|
||
| pub fn invoke_default_constructor(class_name: &str) -> crate::error::Result<i32> { | ||
| let instance_with_default_fields = with_method_area(|method_area| { | ||
| method_area.create_instance_with_default_fields(class_name) | ||
| }); | ||
|
|
||
| let instance_ref = | ||
| with_heap_write_lock(|heap| heap.create_instance(instance_with_default_fields)); | ||
| Self::exec(class_name, Self::INIT_METHOD, &[instance_ref.into()])?; | ||
|
|
||
| Ok(instance_ref) | ||
| } | ||
|
|
||
| pub fn invoke_args_constructor( | ||
| class_name: &str, | ||
| full_signature: &str, | ||
| args: &[StackValueKind], | ||
| ) -> crate::error::Result<i32> { | ||
| let instance_with_default_fields = with_method_area(|method_area| { | ||
| method_area.create_instance_with_default_fields(&class_name) | ||
| }); | ||
|
|
||
| let instance_ref = | ||
| with_heap_write_lock(|heap| heap.create_instance(instance_with_default_fields)); | ||
|
|
||
| let mut new_args = Vec::with_capacity(args.len() + 1); | ||
| new_args.push(instance_ref.into()); | ||
| new_args.extend_from_slice(args); | ||
| Self::exec(class_name, full_signature, &new_args)?; | ||
|
|
||
| Ok(instance_ref) | ||
| } | ||
|
|
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| pub fn create_primordial_thread(args: &[StackValueKind]) -> crate::error::Result<i32> { | ||
| let instance_with_default_fields = with_method_area(|method_area| { | ||
| method_area.create_instance_with_default_fields("java/lang/Thread") | ||
| }); | ||
|
|
||
| let thread_obj_ref = | ||
| with_heap_write_lock(|heap| heap.create_instance(instance_with_default_fields)); | ||
| with_method_area(|area| area.set_system_thread_id(thread_obj_ref)); //save primordial thread id | ||
|
|
||
| let mut new_args = Vec::with_capacity(args.len() + 1); | ||
| new_args.push(thread_obj_ref.into()); | ||
| new_args.extend_from_slice(args); | ||
| Self::exec( | ||
| "java/lang/Thread", | ||
| "<init>:(Ljava/lang/ThreadGroup;Ljava/lang/String;)V", | ||
| &new_args, | ||
| )?; | ||
|
|
||
| Ok(thread_obj_ref) | ||
| } | ||
|
|
||
| fn exec( | ||
| class_name: &str, | ||
| method_name: &str, | ||
| args: &[StackValueKind], | ||
| ) -> crate::error::Result<Option<Vec<i32>>> { | ||
| let java_class = with_method_area(|area| area.get(class_name))?; | ||
| let java_method = java_class.get_method(method_name)?; | ||
| let mut stack_frame = java_method.new_stack_frame()?; | ||
| Self::set_stack_arguments(&mut stack_frame, args)?; | ||
| Engine::execute(stack_frame, &format!("invoke {class_name}.{method_name}")) | ||
| } | ||
|
|
||
| fn set_stack_arguments( | ||
| stack_frame: &mut StackFrame, | ||
| args: &[StackValueKind], | ||
| ) -> crate::error::Result<()> { | ||
| for (i, arg) in args.iter().enumerate() { | ||
| match arg { | ||
| StackValueKind::I32(value) => stack_frame.set_local(i, *value), | ||
| StackValueKind::I64(value) => stack_frame.set_local(i, *value), | ||
| StackValueKind::F32(value) => stack_frame.set_local(i, *value), | ||
| StackValueKind::F64(value) => stack_frame.set_local(i, *value), | ||
| } | ||
| } | ||
|
|
||
| Ok(()) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| mod sack_value; | ||
| pub(crate) mod sack_value; | ||
| pub(crate) mod stack_frame; |
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