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80 lines
2.3 KiB
Rust
80 lines
2.3 KiB
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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use deno_core::error::AnyError;
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use deno_core::op2;
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use deno_core::v8;
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#[op2(fast)]
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pub fn op_v8_cached_data_version_tag() -> u32 {
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v8::script_compiler::cached_data_version_tag()
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}
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#[op2]
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pub fn op_v8_get_heap_statistics(
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scope: &mut v8::HandleScope,
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#[buffer] buffer: &mut [f64],
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) {
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let mut stats = v8::HeapStatistics::default();
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scope.get_heap_statistics(&mut stats);
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buffer[0] = stats.total_heap_size() as f64;
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buffer[1] = stats.total_heap_size_executable() as f64;
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buffer[2] = stats.total_physical_size() as f64;
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buffer[3] = stats.total_available_size() as f64;
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buffer[4] = stats.used_heap_size() as f64;
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buffer[5] = stats.heap_size_limit() as f64;
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buffer[6] = stats.malloced_memory() as f64;
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buffer[7] = stats.peak_malloced_memory() as f64;
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buffer[8] = stats.does_zap_garbage() as f64;
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buffer[9] = stats.number_of_native_contexts() as f64;
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buffer[10] = stats.number_of_detached_contexts() as f64;
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buffer[11] = stats.total_global_handles_size() as f64;
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buffer[12] = stats.used_global_handles_size() as f64;
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buffer[13] = stats.external_memory() as f64;
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}
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pub const VM_CONTEXT_INDEX: usize = 0;
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fn make_context<'a>(
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scope: &mut v8::HandleScope<'a>,
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) -> v8::Local<'a, v8::Context> {
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let scope = &mut v8::EscapableHandleScope::new(scope);
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let context = v8::Context::from_snapshot(scope, VM_CONTEXT_INDEX).unwrap();
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scope.escape(context)
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}
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#[op2]
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pub fn op_vm_run_in_new_context<'a>(
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scope: &mut v8::HandleScope<'a>,
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script: v8::Local<v8::String>,
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ctx_val: v8::Local<v8::Value>,
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) -> Result<v8::Local<'a, v8::Value>, AnyError> {
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let _ctx_obj = if ctx_val.is_undefined() || ctx_val.is_null() {
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v8::Object::new(scope)
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} else {
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ctx_val.try_into()?
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};
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let ctx = make_context(scope);
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let scope = &mut v8::ContextScope::new(scope, ctx);
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let tc_scope = &mut v8::TryCatch::new(scope);
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let script = match v8::Script::compile(tc_scope, script, None) {
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Some(s) => s,
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None => {
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assert!(tc_scope.has_caught());
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tc_scope.rethrow();
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return Ok(v8::undefined(tc_scope).into());
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}
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};
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Ok(match script.run(tc_scope) {
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Some(result) => result,
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None => {
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assert!(tc_scope.has_caught());
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tc_scope.rethrow();
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v8::undefined(tc_scope).into()
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}
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})
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}
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