// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use deno_core::op2;
use deno_core::v8;

#[op2(fast)]
pub fn op_v8_cached_data_version_tag() -> u32 {
  v8::script_compiler::cached_data_version_tag()
}

#[op2]
pub fn op_v8_get_heap_statistics(
  scope: &mut v8::HandleScope,
  #[buffer] buffer: &mut [f64],
) {
  let mut stats = v8::HeapStatistics::default();
  scope.get_heap_statistics(&mut stats);

  buffer[0] = stats.total_heap_size() as f64;
  buffer[1] = stats.total_heap_size_executable() as f64;
  buffer[2] = stats.total_physical_size() as f64;
  buffer[3] = stats.total_available_size() as f64;
  buffer[4] = stats.used_heap_size() as f64;
  buffer[5] = stats.heap_size_limit() as f64;
  buffer[6] = stats.malloced_memory() as f64;
  buffer[7] = stats.peak_malloced_memory() as f64;
  buffer[8] = stats.does_zap_garbage() as f64;
  buffer[9] = stats.number_of_native_contexts() as f64;
  buffer[10] = stats.number_of_detached_contexts() as f64;
  buffer[11] = stats.total_global_handles_size() as f64;
  buffer[12] = stats.used_global_handles_size() as f64;
  buffer[13] = stats.external_memory() as f64;
}