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|
//! Everything related to the collection of runtime stats in YJIT
//! See the stats feature and the --yjit-stats command-line option
#![allow(dead_code)] // Counters are only used with the stats features
use std::alloc::{GlobalAlloc, Layout, System};
use std::sync::atomic::{AtomicUsize, Ordering};
use std::time::Instant;
use crate::codegen::CodegenGlobals;
use crate::core::Context;
use crate::core::for_each_iseq_payload;
use crate::cruby::*;
use crate::options::*;
use crate::yjit::yjit_enabled_p;
/// A middleware to count Rust-allocated bytes as yjit_alloc_size.
#[global_allocator]
static GLOBAL_ALLOCATOR: StatsAlloc = StatsAlloc { alloc_size: AtomicUsize::new(0) };
pub struct StatsAlloc {
alloc_size: AtomicUsize,
}
unsafe impl GlobalAlloc for StatsAlloc {
unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
self.alloc_size.fetch_add(layout.size(), Ordering::SeqCst);
System.alloc(layout)
}
unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
self.alloc_size.fetch_sub(layout.size(), Ordering::SeqCst);
System.dealloc(ptr, layout)
}
unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 {
self.alloc_size.fetch_add(layout.size(), Ordering::SeqCst);
System.alloc_zeroed(layout)
}
unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {
if new_size > layout.size() {
self.alloc_size.fetch_add(new_size - layout.size(), Ordering::SeqCst);
} else if new_size < layout.size() {
self.alloc_size.fetch_sub(layout.size() - new_size, Ordering::SeqCst);
}
System.realloc(ptr, layout, new_size)
}
}
// YJIT exit counts for each instruction type
const VM_INSTRUCTION_SIZE_USIZE: usize = VM_INSTRUCTION_SIZE as usize;
static mut EXIT_OP_COUNT: [u64; VM_INSTRUCTION_SIZE_USIZE] = [0; VM_INSTRUCTION_SIZE_USIZE];
/// Global state needed for collecting backtraces of exits
pub struct YjitExitLocations {
/// Vec to hold raw_samples which represent the control frames
/// of method entries.
raw_samples: Vec<VALUE>,
/// Vec to hold line_samples which represent line numbers of
/// the iseq caller.
line_samples: Vec<i32>,
/// Number of samples skipped when sampling
skipped_samples: usize
}
/// Private singleton instance of yjit exit locations
static mut YJIT_EXIT_LOCATIONS: Option<YjitExitLocations> = None;
impl YjitExitLocations {
/// Initialize the yjit exit locations
pub fn init() {
// Return if the stats feature is disabled
if !cfg!(feature = "stats") {
return;
}
// Return if --yjit-trace-exits isn't enabled
if !get_option!(gen_trace_exits) {
return;
}
let yjit_exit_locations = YjitExitLocations {
raw_samples: Vec::new(),
line_samples: Vec::new(),
skipped_samples: 0
};
// Initialize the yjit exit locations instance
unsafe {
YJIT_EXIT_LOCATIONS = Some(yjit_exit_locations);
}
}
/// Get a mutable reference to the yjit exit locations globals instance
pub fn get_instance() -> &'static mut YjitExitLocations {
unsafe { YJIT_EXIT_LOCATIONS.as_mut().unwrap() }
}
/// Get a mutable reference to the yjit raw samples Vec
pub fn get_raw_samples() -> &'static mut Vec<VALUE> {
&mut YjitExitLocations::get_instance().raw_samples
}
/// Get a mutable reference to yjit the line samples Vec.
pub fn get_line_samples() -> &'static mut Vec<i32> {
&mut YjitExitLocations::get_instance().line_samples
}
/// Get the number of samples skipped
pub fn get_skipped_samples() -> &'static mut usize {
&mut YjitExitLocations::get_instance().skipped_samples
}
/// Mark the data stored in YjitExitLocations::get_raw_samples that needs to be used by
/// rb_yjit_add_frame. YjitExitLocations::get_raw_samples are an array of
/// VALUE pointers, exit instruction, and number of times we've seen this stack row
/// as collected by rb_yjit_record_exit_stack.
///
/// These need to have rb_gc_mark called so they can be used by rb_yjit_add_frame.
pub fn gc_mark_raw_samples() {
// Return if YJIT is not enabled
if !yjit_enabled_p() {
return;
}
// Return if the stats feature is disabled
if !cfg!(feature = "stats") {
return;
}
// Return if --yjit-trace-exits isn't enabled
if !get_option!(gen_trace_exits) {
return;
}
let mut idx: size_t = 0;
let yjit_raw_samples = YjitExitLocations::get_raw_samples();
while idx < yjit_raw_samples.len() as size_t {
let num = yjit_raw_samples[idx as usize];
let mut i = 0;
idx += 1;
// Mark the yjit_raw_samples at the given index. These represent
// the data that needs to be GC'd which are the current frames.
while i < i32::from(num) {
unsafe { rb_gc_mark(yjit_raw_samples[idx as usize]); }
i += 1;
idx += 1;
}
// Increase index for exit instruction.
idx += 1;
// Increase index for bookkeeping value (number of times we've seen this
// row in a stack).
idx += 1;
}
}
}
// Macro to declare the stat counters
macro_rules! make_counters {
($($counter_name:ident,)+) => {
/// Struct containing the counter values
#[derive(Default, Debug)]
pub struct Counters { $(pub $counter_name: u64),+ }
/// Enum to represent a counter
#[allow(non_camel_case_types)]
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub enum Counter { $($counter_name),+ }
impl Counter {
/// Get a counter name string
pub fn get_name(&self) -> String {
match self {
$( Counter::$counter_name => stringify!($counter_name).to_string() ),+
}
}
}
/// Global counters instance, initialized to zero
pub static mut COUNTERS: Counters = Counters { $($counter_name: 0),+ };
/// Counter names constant
const COUNTER_NAMES: &'static [&'static str] = &[ $(stringify!($counter_name)),+ ];
/// Map a counter name string to a counter pointer
pub fn get_counter_ptr(name: &str) -> *mut u64 {
match name {
$( stringify!($counter_name) => { ptr_to_counter!($counter_name) } ),+
_ => panic!()
}
}
}
}
/// The list of counters that are available without --yjit-stats.
/// They are incremented only by `incr_counter!` and don't use `gen_counter_incr`.
pub const DEFAULT_COUNTERS: [Counter; 7] = [
Counter::code_gc_count,
Counter::compiled_iseq_entry,
Counter::compiled_iseq_count,
Counter::compiled_blockid_count,
Counter::compiled_block_count,
Counter::compiled_branch_count,
Counter::compile_time_ns,
];
/// Macro to increase a counter by name and count
macro_rules! incr_counter_by {
// Unsafe is ok here because options are initialized
// once before any Ruby code executes
($counter_name:ident, $count:expr) => {
#[allow(unused_unsafe)]
{
unsafe { $crate::stats::COUNTERS.$counter_name += $count as u64 }
}
};
}
pub(crate) use incr_counter_by;
/// Macro to increment a counter by name
macro_rules! incr_counter {
// Unsafe is ok here because options are initialized
// once before any Ruby code executes
($counter_name:ident) => {
#[allow(unused_unsafe)]
{
unsafe { $crate::stats::COUNTERS.$counter_name += 1 }
}
};
}
pub(crate) use incr_counter;
/// Macro to get a raw pointer to a given counter
macro_rules! ptr_to_counter {
($counter_name:ident) => {
unsafe {
let ctr_ptr = std::ptr::addr_of_mut!(COUNTERS.$counter_name);
ctr_ptr
}
};
}
pub(crate) use ptr_to_counter;
// Declare all the counters we track
make_counters! {
yjit_insns_count,
// Method calls that fallback to dynamic dispatch
send_keywords,
send_kw_splat,
send_args_splat_super,
send_iseq_zsuper,
send_block_arg,
send_ivar_set_method,
send_zsuper_method,
send_undef_method,
send_optimized_method,
send_optimized_method_call,
send_optimized_method_block_call,
send_call_block,
send_call_kwarg,
send_call_multi_ractor,
send_missing_method,
send_refined_method,
send_cfunc_ruby_array_varg,
send_cfunc_argc_mismatch,
send_cfunc_toomany_args,
send_cfunc_tracing,
send_cfunc_kwargs,
send_cfunc_splat_with_kw,
send_cfunc_splat_send,
send_attrset_kwargs,
send_iseq_tailcall,
send_iseq_arity_error,
send_iseq_only_keywords,
send_iseq_kwargs_req_and_opt_missing,
send_iseq_kwargs_mismatch,
send_iseq_has_post,
send_iseq_has_kwrest,
send_iseq_has_no_kw,
send_iseq_accepts_no_kwarg,
send_iseq_materialized_block,
send_iseq_splat_with_opt,
send_iseq_splat_with_kw,
send_iseq_missing_optional_kw,
send_iseq_too_many_kwargs,
send_not_implemented_method,
send_getter_arity,
send_args_splat_non_iseq,
send_args_splat_ivar,
send_args_splat_attrset,
send_args_splat_bmethod,
send_args_splat_aref,
send_args_splat_aset,
send_args_splat_opt_call,
send_args_splat_cfunc_var_args,
send_args_splat_cfunc_zuper,
send_args_splat_cfunc_ruby2_keywords,
send_iseq_splat_arity_error,
send_splat_too_long,
send_iseq_ruby2_keywords,
send_send_not_imm,
send_send_wrong_args,
send_send_null_mid,
send_send_null_cme,
send_send_nested,
send_send_chain_string,
send_send_chain_not_string_or_sym,
send_send_getter,
send_send_builtin,
send_iseq_has_rest_and_captured,
send_iseq_has_rest_and_splat,
send_iseq_has_rest_and_kw_supplied,
send_iseq_has_rest_opt_and_block,
send_bmethod_ractor,
send_bmethod_block_arg,
invokesuper_defined_class_mismatch,
invokesuper_kw_splat,
invokesuper_kwarg,
invokesuper_megamorphic,
invokesuper_no_cme,
invokesuper_no_me,
invokesuper_not_iseq_or_cfunc,
invokesuper_refinement,
invokeblock_megamorphic,
invokeblock_none,
invokeblock_iseq_arg0_optional,
invokeblock_iseq_arg0_has_kw,
invokeblock_iseq_arg0_args_splat,
invokeblock_iseq_arg0_not_array,
invokeblock_iseq_arg0_wrong_len,
invokeblock_ifunc_args_splat,
invokeblock_ifunc_kw_splat,
invokeblock_proc,
invokeblock_symbol,
// Method calls that exit to the interpreter
guard_send_block_arg_type,
guard_send_klass_megamorphic,
guard_send_se_cf_overflow,
guard_send_se_protected_check_failed,
guard_send_splatarray_length_not_equal,
guard_send_splatarray_last_ruby_2_keywords,
guard_send_splat_not_array,
guard_send_send_chain,
guard_send_send_chain_not_string,
guard_send_send_chain_not_sym,
guard_send_iseq_has_rest_and_splat_not_equal,
guard_send_is_a_class_mismatch,
guard_send_instance_of_class_mismatch,
guard_send_interrupted,
guard_send_not_fixnums,
guard_send_not_string,
guard_send_respond_to_mid_mismatch,
guard_invokesuper_me_changed,
guard_invokeblock_tag_changed,
guard_invokeblock_iseq_block_changed,
traced_cfunc_return,
leave_se_interrupt,
leave_interp_return,
getivar_se_self_not_heap,
getivar_idx_out_of_range,
getivar_megamorphic,
getivar_not_heap,
setivar_se_self_not_heap,
setivar_idx_out_of_range,
setivar_val_heapobject,
setivar_name_not_mapped,
setivar_not_heap,
setivar_frozen,
setivar_megamorphic,
definedivar_not_heap,
definedivar_megamorphic,
setlocal_wb_required,
opt_plus_overflow,
opt_minus_overflow,
opt_mult_overflow,
opt_mod_zero,
opt_div_zero,
lshift_amt_changed,
lshift_overflow,
opt_aref_argc_not_one,
opt_aref_arg_not_fixnum,
opt_aref_not_array,
opt_aref_not_hash,
opt_aset_not_array,
opt_aset_not_fixnum,
opt_aset_not_hash,
opt_aref_with_qundef,
opt_case_dispatch_megamorphic,
opt_getconstant_path_ic_miss,
opt_getconstant_path_no_ic_entry,
opt_getconstant_path_multi_ractor,
expandarray_splat,
expandarray_postarg,
expandarray_not_array,
expandarray_comptime_not_array,
expandarray_chain_max_depth,
// getblockparam
gbp_wb_required,
// getblockparamproxy
gbpp_unsupported_type,
gbpp_block_param_modified,
gbpp_block_handler_not_none,
gbpp_block_handler_not_iseq,
gbpp_block_handler_not_proc,
branchif_interrupted,
branchunless_interrupted,
branchnil_interrupted,
jump_interrupted,
objtostring_not_string,
binding_allocations,
binding_set,
compiled_iseq_entry,
compiled_iseq_count,
compiled_blockid_count,
compiled_block_count,
compiled_branch_count,
compile_time_ns,
compilation_failure,
block_next_count,
defer_count,
defer_empty_count,
branch_insn_count,
branch_known_count,
freed_iseq_count,
exit_from_branch_stub,
invalidation_count,
invalidate_method_lookup,
invalidate_bop_redefined,
invalidate_ractor_spawn,
invalidate_constant_state_bump,
invalidate_constant_ic_fill,
constant_state_bumps,
// Currently, it's out of the ordinary (might be impossible) for YJIT to leave gaps in
// executable memory, so this should be 0.
exec_mem_non_bump_alloc,
code_gc_count,
num_gc_obj_refs,
num_send,
num_send_known_class,
num_send_megamorphic,
num_send_polymorphic,
num_send_x86_rel32,
num_send_x86_reg,
num_send_dynamic,
num_getivar_megamorphic,
num_setivar_megamorphic,
num_throw,
num_throw_break,
num_throw_retry,
num_throw_return,
iseq_stack_too_large,
iseq_too_long,
temp_reg_opnd,
temp_mem_opnd,
temp_spill,
}
//===========================================================================
/// Primitive called in yjit.rb
/// Check if stats generation is enabled
#[no_mangle]
pub extern "C" fn rb_yjit_stats_enabled_p(_ec: EcPtr, _ruby_self: VALUE) -> VALUE {
if get_option!(gen_stats) {
return Qtrue;
} else {
return Qfalse;
}
}
/// Primitive called in yjit.rb
/// Check if stats generation should print at exit
#[no_mangle]
pub extern "C" fn rb_yjit_print_stats_p(_ec: EcPtr, _ruby_self: VALUE) -> VALUE {
if get_option!(print_stats) {
return Qtrue;
} else {
return Qfalse;
}
}
/// Primitive called in yjit.rb.
/// Export all YJIT statistics as a Ruby hash.
#[no_mangle]
pub extern "C" fn rb_yjit_get_stats(_ec: EcPtr, _ruby_self: VALUE, context: VALUE) -> VALUE {
with_vm_lock(src_loc!(), || rb_yjit_gen_stats_dict(context == Qtrue))
}
/// Primitive called in yjit.rb
///
/// Check if trace_exits generation is enabled. Requires the stats feature
/// to be enabled.
#[no_mangle]
pub extern "C" fn rb_yjit_trace_exit_locations_enabled_p(_ec: EcPtr, _ruby_self: VALUE) -> VALUE {
#[cfg(feature = "stats")]
if get_option!(gen_trace_exits) {
return Qtrue;
}
return Qfalse;
}
/// Call the C function to parse the raw_samples and line_samples
/// into raw, lines, and frames hash for RubyVM::YJIT.exit_locations.
#[no_mangle]
pub extern "C" fn rb_yjit_get_exit_locations(_ec: EcPtr, _ruby_self: VALUE) -> VALUE {
// Return if YJIT is not enabled
if !yjit_enabled_p() {
return Qnil;
}
// Return if the stats feature is disabled
if !cfg!(feature = "stats") {
return Qnil;
}
// Return if --yjit-trace-exits isn't enabled
if !get_option!(gen_trace_exits) {
return Qnil;
}
// If the stats feature is enabled, pass yjit_raw_samples and yjit_line_samples
// to the C function called rb_yjit_exit_locations_dict for parsing.
let yjit_raw_samples = YjitExitLocations::get_raw_samples();
let yjit_line_samples = YjitExitLocations::get_line_samples();
// Assert that the two Vec's are the same length. If they aren't
// equal something went wrong.
assert_eq!(yjit_raw_samples.len(), yjit_line_samples.len());
// yjit_raw_samples and yjit_line_samples are the same length so
// pass only one of the lengths in the C function.
let samples_len = yjit_raw_samples.len() as i32;
unsafe {
rb_yjit_exit_locations_dict(yjit_raw_samples.as_mut_ptr(), yjit_line_samples.as_mut_ptr(), samples_len)
}
}
/// Export all YJIT statistics as a Ruby hash.
fn rb_yjit_gen_stats_dict(context: bool) -> VALUE {
// If YJIT is not enabled, return Qnil
if !yjit_enabled_p() {
return Qnil;
}
macro_rules! hash_aset_usize {
($hash:ident, $counter_name:expr, $value:expr) => {
let key = rust_str_to_sym($counter_name);
let value = VALUE::fixnum_from_usize($value);
rb_hash_aset($hash, key, value);
}
}
let hash = unsafe { rb_hash_new() };
unsafe {
// Get the inline and outlined code blocks
let cb = CodegenGlobals::get_inline_cb();
let ocb = CodegenGlobals::get_outlined_cb();
// Inline code size
hash_aset_usize!(hash, "inline_code_size", cb.code_size());
// Outlined code size
hash_aset_usize!(hash, "outlined_code_size", ocb.unwrap().code_size());
// GCed pages
let freed_page_count = cb.num_freed_pages();
hash_aset_usize!(hash, "freed_page_count", freed_page_count);
// GCed code size
hash_aset_usize!(hash, "freed_code_size", freed_page_count * cb.page_size());
// Live pages
hash_aset_usize!(hash, "live_page_count", cb.num_mapped_pages() - freed_page_count);
// Size of memory region allocated for JIT code
hash_aset_usize!(hash, "code_region_size", cb.mapped_region_size());
// Rust global allocations in bytes
hash_aset_usize!(hash, "yjit_alloc_size", GLOBAL_ALLOCATOR.alloc_size.load(Ordering::SeqCst));
// `context` is true at RubyVM::YJIT._print_stats for --yjit-stats. It's false by default
// for RubyVM::YJIT.runtime_stats because counting all Contexts could be expensive.
if context {
let live_context_count = get_live_context_count();
let context_size = std::mem::size_of::<Context>();
hash_aset_usize!(hash, "live_context_count", live_context_count);
hash_aset_usize!(hash, "live_context_size", live_context_count * context_size);
}
// VM instructions count
hash_aset_usize!(hash, "vm_insns_count", rb_vm_insns_count as usize);
}
// If we're not generating stats, put only default counters
if !get_option!(gen_stats) {
for counter in DEFAULT_COUNTERS {
// Get the counter value
let counter_ptr = get_counter_ptr(&counter.get_name());
let counter_val = unsafe { *counter_ptr };
// Put counter into hash
let key = rust_str_to_sym(&counter.get_name());
let value = VALUE::fixnum_from_usize(counter_val as usize);
unsafe { rb_hash_aset(hash, key, value); }
}
return hash;
}
// If the stats feature is enabled
unsafe {
// Indicate that the complete set of stats is available
rb_hash_aset(hash, rust_str_to_sym("all_stats"), Qtrue);
// For each counter we track
for counter_name in COUNTER_NAMES {
// Get the counter value
let counter_ptr = get_counter_ptr(counter_name);
let counter_val = *counter_ptr;
// Put counter into hash
let key = rust_str_to_sym(counter_name);
let value = VALUE::fixnum_from_usize(counter_val as usize);
rb_hash_aset(hash, key, value);
}
// For each entry in exit_op_count, add a stats entry with key "exit_INSTRUCTION_NAME"
// and the value is the count of side exits for that instruction.
for op_idx in 0..VM_INSTRUCTION_SIZE_USIZE {
let op_name = insn_name(op_idx);
let key_string = "exit_".to_owned() + &op_name;
let key = rust_str_to_sym(&key_string);
let value = VALUE::fixnum_from_usize(EXIT_OP_COUNT[op_idx] as usize);
rb_hash_aset(hash, key, value);
}
}
hash
}
fn get_live_context_count() -> usize {
let mut count = 0;
for_each_iseq_payload(|iseq_payload| {
for blocks in iseq_payload.version_map.iter() {
for block in blocks.iter() {
count += unsafe { block.as_ref() }.get_ctx_count();
}
}
for block in iseq_payload.dead_blocks.iter() {
count += unsafe { block.as_ref() }.get_ctx_count();
}
});
count
}
/// Record the backtrace when a YJIT exit occurs. This functionality requires
/// that the stats feature is enabled as well as the --yjit-trace-exits option.
///
/// This function will fill two Vec's in YjitExitLocations to record the raw samples
/// and line samples. Their length should be the same, however the data stored in
/// them is different.
#[no_mangle]
pub extern "C" fn rb_yjit_record_exit_stack(_exit_pc: *const VALUE)
{
// Return if YJIT is not enabled
if !yjit_enabled_p() {
return;
}
// Return if the stats feature is disabled
if !cfg!(feature = "stats") {
return;
}
// Return if --yjit-trace-exits isn't enabled
if !get_option!(gen_trace_exits) {
return;
}
if get_option!(trace_exits_sample_rate) > 0 {
if get_option!(trace_exits_sample_rate) <= *YjitExitLocations::get_skipped_samples() {
YjitExitLocations::get_instance().skipped_samples = 0;
} else {
YjitExitLocations::get_instance().skipped_samples += 1;
return;
}
}
// rb_vm_insn_addr2opcode won't work in cargo test --all-features
// because it's a C function. Without insn call, this function is useless
// so wrap the whole thing in a not test check.
#[cfg(not(test))]
{
// Get the opcode from the encoded insn handler at this PC
let insn = unsafe { rb_vm_insn_addr2opcode((*_exit_pc).as_ptr()) };
// Use the same buffer size as Stackprof.
const BUFF_LEN: usize = 2048;
// Create 2 array buffers to be used to collect frames and lines.
let mut frames_buffer = [VALUE(0_usize); BUFF_LEN];
let mut lines_buffer = [0; BUFF_LEN];
// Records call frame and line information for each method entry into two
// temporary buffers. Returns the number of times we added to the buffer (ie
// the length of the stack).
//
// Call frame info is stored in the frames_buffer, line number information
// in the lines_buffer. The first argument is the start point and the second
// argument is the buffer limit, set at 2048.
let stack_length = unsafe { rb_profile_frames(0, BUFF_LEN as i32, frames_buffer.as_mut_ptr(), lines_buffer.as_mut_ptr()) };
let samples_length = (stack_length as usize) + 3;
let yjit_raw_samples = YjitExitLocations::get_raw_samples();
let yjit_line_samples = YjitExitLocations::get_line_samples();
// If yjit_raw_samples is less than or equal to the current length of the samples
// we might have seen this stack trace previously.
if yjit_raw_samples.len() >= samples_length {
let prev_stack_len_index = yjit_raw_samples.len() - samples_length;
let prev_stack_len = i64::from(yjit_raw_samples[prev_stack_len_index]);
let mut idx = stack_length - 1;
let mut prev_frame_idx = 0;
let mut seen_already = true;
// If the previous stack length and current stack length are equal,
// loop and compare the current frame to the previous frame. If they are
// not equal, set seen_already to false and break out of the loop.
if prev_stack_len == stack_length as i64 {
while idx >= 0 {
let current_frame = frames_buffer[idx as usize];
let prev_frame = yjit_raw_samples[prev_stack_len_index + prev_frame_idx + 1];
// If the current frame and previous frame are not equal, set
// seen_already to false and break out of the loop.
if current_frame != prev_frame {
seen_already = false;
break;
}
idx -= 1;
prev_frame_idx += 1;
}
// If we know we've seen this stack before, increment the counter by 1.
if seen_already {
let prev_idx = yjit_raw_samples.len() - 1;
let prev_count = i64::from(yjit_raw_samples[prev_idx]);
let new_count = prev_count + 1;
yjit_raw_samples[prev_idx] = VALUE(new_count as usize);
yjit_line_samples[prev_idx] = new_count as i32;
return;
}
}
}
yjit_raw_samples.push(VALUE(stack_length as usize));
yjit_line_samples.push(stack_length);
let mut idx = stack_length - 1;
while idx >= 0 {
let frame = frames_buffer[idx as usize];
let line = lines_buffer[idx as usize];
yjit_raw_samples.push(frame);
yjit_line_samples.push(line);
idx -= 1;
}
// Push the insn value into the yjit_raw_samples Vec.
yjit_raw_samples.push(VALUE(insn as usize));
// We don't know the line
yjit_line_samples.push(0);
// Push number of times seen onto the stack, which is 1
// because it's the first time we've seen it.
yjit_raw_samples.push(VALUE(1_usize));
yjit_line_samples.push(1);
}
}
/// Primitive called in yjit.rb. Zero out all the counters.
#[no_mangle]
pub extern "C" fn rb_yjit_reset_stats_bang(_ec: EcPtr, _ruby_self: VALUE) -> VALUE {
unsafe {
EXIT_OP_COUNT = [0; VM_INSTRUCTION_SIZE_USIZE];
COUNTERS = Counters::default();
}
return Qnil;
}
#[no_mangle]
pub extern "C" fn rb_yjit_collect_binding_alloc() {
incr_counter!(binding_allocations);
}
#[no_mangle]
pub extern "C" fn rb_yjit_collect_binding_set() {
incr_counter!(binding_set);
}
#[no_mangle]
pub extern "C" fn rb_yjit_count_side_exit_op(exit_pc: *const VALUE) -> *const VALUE {
#[cfg(not(test))]
unsafe {
// Get the opcode from the encoded insn handler at this PC
let opcode = rb_vm_insn_addr2opcode((*exit_pc).as_ptr());
// Increment the exit op count for this opcode
EXIT_OP_COUNT[opcode as usize] += 1;
};
// This function must return exit_pc!
return exit_pc;
}
/// Measure the time taken by func() and add that to yjit_compile_time.
pub fn with_compile_time<F, R>(func: F) -> R where F: FnOnce() -> R {
let start = Instant::now();
let ret = func();
let nanos = Instant::now().duration_since(start).as_nanos();
incr_counter_by!(compile_time_ns, nanos);
ret
}
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