// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file // for details. All rights reserved. Use of this source code is governed by a // BSD-style license that can be found in the LICENSE file. #ifndef RUNTIME_VM_FLAG_LIST_H_ #define RUNTIME_VM_FLAG_LIST_H_ // Don't use USING_DBC outside of this file. #if defined(TARGET_ARCH_DBC) #define USING_DBC true #else #define USING_DBC false #endif // Don't use USING_MULTICORE outside of this file. #if defined(ARCH_IS_MULTI_CORE) #define USING_MULTICORE true #else #define USING_MULTICORE false #endif // Don't use USING_PRODUCT outside of this file. #if defined(PRODUCT) #define USING_PRODUCT true #else #define USING_PRODUCT false #endif #if defined(DART_PRECOMPILED_RUNTIME) constexpr bool kDartPrecompiledRuntime = true; #else constexpr bool kDartPrecompiledRuntime = false; #endif // List of all flags in the VM. // Flags can be one of three categories: // * P roduct flags: Can be set in any of the deployment modes, including in // production. // * R elease flags: Generally available flags except when building product. // * D ebug flags: Can only be set in debug VMs, which also have C++ assertions // enabled. // * pre C ompile flags: Generally available flags except when building product // or precompiled runtime. // // Usage: // P(name, type, default_value, comment) // R(name, product_value, type, default_value, comment) // D(name, type, default_value, comment) // C(name, precompiled_value, product_value, type, default_value, comment) #define FLAG_LIST(P, R, D, C) \ P(experimental_unsafe_mode_use_at_your_own_risk, bool, false, \ "Omit runtime strong mode type checks and disable optimizations based on " \ "types.") \ P(abort_on_oom, bool, false, \ "Abort if memory allocation fails - use only with --old-gen-heap-size") \ C(async_debugger, false, false, bool, true, \ "Debugger support async functions.") \ P(background_compilation, bool, USING_MULTICORE, \ "Run optimizing compilation in background") \ P(causal_async_stacks, bool, !USING_PRODUCT, "Improved async stacks") \ P(collect_code, bool, false, "Attempt to GC infrequently used code.") \ P(collect_dynamic_function_names, bool, true, \ "Collects all dynamic function names to identify unique targets") \ P(compactor_tasks, int, 2, \ "The number of tasks to use for parallel compaction.") \ P(compilation_counter_threshold, int, 10, \ "Function's usage-counter value before interpreted function is compiled, " \ "-1 means never") \ P(concurrent_mark, bool, USING_MULTICORE, \ "Concurrent mark for old generation.") \ P(concurrent_sweep, bool, USING_MULTICORE, \ "Concurrent sweep for old generation.") \ R(dedup_instructions, true, bool, false, \ "Canonicalize instructions when precompiling.") \ C(deoptimize_alot, false, false, bool, false, \ "Deoptimizes we are about to return to Dart code from native entries.") \ C(deoptimize_every, 0, 0, int, 0, \ "Deoptimize on every N stack overflow checks") \ R(disable_alloc_stubs_after_gc, false, bool, false, "Stress testing flag.") \ R(disassemble, false, bool, false, "Disassemble dart code.") \ R(disassemble_optimized, false, bool, false, "Disassemble optimized code.") \ R(disassemble_relative, false, bool, false, \ "Use offsets instead of absolute PCs") \ R(dump_megamorphic_stats, false, bool, false, \ "Dump megamorphic cache statistics") \ R(dump_symbol_stats, false, bool, false, "Dump symbol table statistics") \ P(dwarf_stack_traces, bool, false, \ "Emit DWARF line number and inlining info" \ "in dylib snapshots and don't symbolize stack traces.") \ R(enable_asserts, false, bool, false, "Enable assert statements.") \ P(enable_kernel_expression_compilation, bool, true, \ "Compile expressions with the Kernel front-end.") \ P(enable_mirrors, bool, true, \ "Disable to make importing dart:mirrors an error.") \ P(enable_ffi, bool, true, "Disable to make importing dart:ffi an error.") \ P(fields_may_be_reset, bool, false, \ "Don't optimize away static field initialization") \ C(force_clone_compiler_objects, false, false, bool, false, \ "Force cloning of objects needed in compiler (ICData and Field).") \ P(getter_setter_ratio, int, 13, \ "Ratio of getter/setter usage used for double field unboxing heuristics") \ P(guess_icdata_cid, bool, true, \ "Artificially create type feedback for arithmetic etc. operations") \ P(huge_method_cutoff_in_tokens, int, 20000, \ "Huge method cutoff in tokens: Disables optimizations for huge methods.") \ P(idle_timeout_micros, int, 1000 * kMicrosecondsPerMillisecond, \ "Consider thread pool isolates for idle tasks after this long.") \ P(idle_duration_micros, int, 500 * kMicrosecondsPerMillisecond, \ "Allow idle tasks to run for this long.") \ P(interpret_irregexp, bool, USING_DBC, "Use irregexp bytecode interpreter") \ P(lazy_dispatchers, bool, true, "Generate dispatchers lazily") \ P(link_natives_lazily, bool, false, "Link native calls lazily") \ C(load_deferred_eagerly, true, true, bool, false, \ "Load deferred libraries eagerly.") \ R(log_marker_tasks, false, bool, false, \ "Log debugging information for old gen GC marking tasks.") \ P(marker_tasks, int, USING_MULTICORE ? 2 : 0, \ "The number of tasks to spawn during old gen GC marking (0 means " \ "perform all marking on main thread).") \ P(max_polymorphic_checks, int, 4, \ "Maximum number of polymorphic check, otherwise it is megamorphic.") \ P(max_equality_polymorphic_checks, int, 32, \ "Maximum number of polymorphic checks in equality operator,") \ P(new_gen_semi_max_size, int, (kWordSize <= 4) ? 8 : 16, \ "Max size of new gen semi space in MB") \ P(new_gen_semi_initial_size, int, (kWordSize <= 4) ? 1 : 2, \ "Initial size of new gen semi space in MB") \ P(optimization_counter_threshold, int, 30000, \ "Function's usage-counter value before it is optimized, -1 means never") \ R(randomize_optimization_counter, false, bool, false, \ "Randomize optimization counter thresholds on a per-function basis (for " \ "testing).") \ P(optimization_level, int, 2, \ "Optimization level: 1 (favor size), 2 (default), 3 (favor speed)") \ P(old_gen_heap_size, int, kDefaultMaxOldGenHeapSize, \ "Max size of old gen heap size in MB, or 0 for unlimited," \ "e.g: --old_gen_heap_size=1024 allows up to 1024MB old gen heap") \ R(pause_isolates_on_start, false, bool, false, \ "Pause isolates before starting.") \ R(pause_isolates_on_exit, false, bool, false, "Pause isolates exiting.") \ R(pause_isolates_on_unhandled_exceptions, false, bool, false, \ "Pause isolates on unhandled exceptions.") \ P(polymorphic_with_deopt, bool, true, \ "Polymorphic calls with deoptimization / megamorphic call") \ P(precompiled_mode, bool, false, "Precompilation compiler mode") \ P(print_snapshot_sizes, bool, false, "Print sizes of generated snapshots.") \ P(print_snapshot_sizes_verbose, bool, false, \ "Print cluster sizes of generated snapshots.") \ P(print_benchmarking_metrics, bool, false, \ "Print additional memory and latency metrics for benchmarking.") \ R(print_ssa_liveranges, false, bool, false, \ "Print live ranges after allocation.") \ R(print_stacktrace_at_api_error, false, bool, false, \ "Attempt to print a native stack trace when an API error is created.") \ D(print_variable_descriptors, bool, false, \ "Print variable descriptors in disassembly.") \ R(profiler, false, bool, false, "Enable the profiler.") \ R(profiler_native_memory, false, bool, false, \ "Enable native memory statistic collection.") \ P(reorder_basic_blocks, bool, true, "Reorder basic blocks") \ C(stress_async_stacks, false, false, bool, false, \ "Stress test async stack traces") \ P(use_bare_instructions, bool, true, "Enable bare instructions mode.") \ R(support_disassembler, false, bool, true, "Support the disassembler.") \ R(support_il_printer, false, bool, true, "Support the IL printer.") \ C(support_reload, false, false, bool, true, "Support isolate reload.") \ R(support_service, false, bool, true, "Support the service protocol.") \ D(trace_cha, bool, false, "Trace CHA operations") \ R(trace_field_guards, false, bool, false, "Trace changes in field's cids.") \ D(trace_ic, bool, false, "Trace IC handling") \ D(trace_ic_miss_in_optimized, bool, false, \ "Trace IC miss in optimized code") \ C(trace_irregexp, false, false, bool, false, "Trace irregexps.") \ D(trace_intrinsified_natives, bool, false, \ "Report if any of the intrinsified natives are called") \ D(trace_isolates, bool, false, "Trace isolate creation and shut down.") \ D(trace_handles, bool, false, "Traces allocation of handles.") \ D(trace_kernel_binary, bool, false, "Trace Kernel reader/writer.") \ D(trace_natives, bool, false, "Trace invocation of natives") \ D(trace_optimization, bool, false, "Print optimization details.") \ R(trace_profiler, false, bool, false, "Profiler trace") \ D(trace_profiler_verbose, bool, false, "Verbose profiler trace") \ D(trace_runtime_calls, bool, false, "Trace runtime calls.") \ D(trace_ssa_allocator, bool, false, "Trace register allocation over SSA.") \ P(trace_strong_mode_types, bool, false, \ "Trace optimizations based on strong mode types.") \ D(trace_type_checks, bool, false, "Trace runtime type checks.") \ D(trace_patching, bool, false, "Trace patching of code.") \ D(trace_optimized_ic_calls, bool, false, \ "Trace IC calls in optimized code.") \ D(trace_zones, bool, false, "Traces allocation sizes in the zone.") \ P(truncating_left_shift, bool, true, \ "Optimize left shift to truncate if possible") \ P(use_bytecode_compiler, bool, false, "Compile from bytecode") \ P(use_compactor, bool, false, "Compact the heap during old-space GC.") \ P(use_cha_deopt, bool, true, \ "Use class hierarchy analysis even if it can cause deoptimization.") \ P(use_field_guards, bool, !USING_DBC, \ "Use field guards and track field types") \ C(use_osr, false, true, bool, true, "Use OSR") \ P(use_strong_mode_types, bool, true, "Optimize based on strong mode types.") \ R(verbose_gc, false, bool, false, "Enables verbose GC.") \ R(verbose_gc_hdr, 40, int, 40, "Print verbose GC header interval.") \ R(verify_after_gc, false, bool, false, \ "Enables heap verification after GC.") \ R(verify_before_gc, false, bool, false, \ "Enables heap verification before GC.") \ D(verify_gc_contains, bool, false, \ "Enables verification of address contains during GC.") \ D(verify_on_transition, bool, false, "Verify on dart <==> VM.") \ P(enable_slow_path_sharing, bool, true, "Enable sharing of slow-path code.") \ P(shared_slow_path_triggers_gc, bool, false, \ "TESTING: slow-path triggers a GC.") \ P(enable_multiple_entrypoints, bool, true, \ "Enable multiple entrypoints per-function and related optimizations.") \ P(enable_testing_pragmas, bool, false, \ "Enable magical pragmas for testing purposes. Use at your own risk!") \ R(eliminate_type_checks, true, bool, true, \ "Eliminate type checks when allowed by static type analysis.") \ P(enable_interpreter, bool, false, "Enable interpreting kernel bytecode.") \ D(support_rr, bool, false, "Support running within RR.") \ P(verify_entry_points, bool, false, \ "Throw API error on invalid member access throuh native API. See " \ "entry_point_pragma.md") // List of VM-global (i.e. non-isolate specific) flags. // // The value used for those flags at snapshot generation time needs to be the // same as during runtime. // // Usage: // P(name, command-line-flag-name) #define VM_GLOBAL_FLAG_LIST(V) \ V(use_bare_instructions, FLAG_use_bare_instructions) #endif // RUNTIME_VM_FLAG_LIST_H_