| // Copyright 2008 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // This file defines all of the flags. It is separated into different section, |
| // for Debug, Release, Logging and Profiling, etc. To add a new flag, find the |
| // correct section, and use one of the DEFINE_ macros, without a trailing ';'. |
| // |
| // This include does not have a guard, because it is a template-style include, |
| // which can be included multiple times in different modes. It expects to have |
| // a mode defined before it's included. The modes are FLAG_MODE_... below: |
| |
| // We want to declare the names of the variables for the header file. Normally |
| // this will just be an extern declaration, but for a readonly flag we let the |
| // compiler make better optimizations by giving it the value. |
| #if defined(FLAG_MODE_DECLARE) |
| #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ |
| extern ctype FLAG_##nam; |
| #define FLAG_READONLY(ftype, ctype, nam, def, cmt) \ |
| static ctype const FLAG_##nam = def; |
| |
| // We want to supply the actual storage and value for the flag variable in the |
| // .cc file. We only do this for writable flags. |
| #elif defined(FLAG_MODE_DEFINE) |
| #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ |
| ctype FLAG_##nam = def; |
| #define FLAG_READONLY(ftype, ctype, nam, def, cmt) |
| |
| // We need to define all of our default values so that the Flag structure can |
| // access them by pointer. These are just used internally inside of one .cc, |
| // for MODE_META, so there is no impact on the flags interface. |
| #elif defined(FLAG_MODE_DEFINE_DEFAULTS) |
| #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ |
| static ctype const FLAGDEFAULT_##nam = def; |
| #define FLAG_READONLY(ftype, ctype, nam, def, cmt) |
| |
| |
| // We want to write entries into our meta data table, for internal parsing and |
| // printing / etc in the flag parser code. We only do this for writable flags. |
| #elif defined(FLAG_MODE_META) |
| #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ |
| { Flag::TYPE_##ftype, #nam, &FLAG_##nam, &FLAGDEFAULT_##nam, cmt, false }, |
| #define FLAG_READONLY(ftype, ctype, nam, def, cmt) |
| |
| #else |
| #error No mode supplied when including flags.defs |
| #endif |
| |
| #ifdef FLAG_MODE_DECLARE |
| // Structure used to hold a collection of arguments to the JavaScript code. |
| struct JSArguments { |
| public: |
| JSArguments(); |
| JSArguments(int argc, const char** argv); |
| int argc() const; |
| const char** argv(); |
| const char*& operator[](int idx); |
| JSArguments& operator=(JSArguments args); |
| private: |
| int argc_; |
| const char** argv_; |
| }; |
| #endif |
| |
| #define DEFINE_bool(nam, def, cmt) FLAG(BOOL, bool, nam, def, cmt) |
| #define DEFINE_int(nam, def, cmt) FLAG(INT, int, nam, def, cmt) |
| #define DEFINE_float(nam, def, cmt) FLAG(FLOAT, double, nam, def, cmt) |
| #define DEFINE_string(nam, def, cmt) FLAG(STRING, const char*, nam, def, cmt) |
| #define DEFINE_args(nam, def, cmt) FLAG(ARGS, JSArguments, nam, def, cmt) |
| |
| // |
| // Flags in all modes. |
| // |
| #define FLAG FLAG_FULL |
| |
| // assembler-ia32.cc / assembler-arm.cc / assembler-x64.cc |
| DEFINE_bool(debug_code, false, |
| "generate extra code (comments, assertions) for debugging") |
| DEFINE_bool(emit_branch_hints, false, "emit branch hints") |
| DEFINE_bool(push_pop_elimination, true, |
| "eliminate redundant push/pops in assembly code") |
| DEFINE_bool(print_push_pop_elimination, false, |
| "print elimination of redundant push/pops in assembly code") |
| DEFINE_bool(enable_sse2, true, |
| "enable use of SSE2 instructions if available") |
| DEFINE_bool(enable_sse3, true, |
| "enable use of SSE3 instructions if available") |
| DEFINE_bool(enable_cmov, true, |
| "enable use of CMOV instruction if available") |
| DEFINE_bool(enable_rdtsc, true, |
| "enable use of RDTSC instruction if available") |
| DEFINE_bool(enable_sahf, true, |
| "enable use of SAHF instruction if available (X64 only)") |
| DEFINE_bool(enable_vfp3, true, |
| "enable use of VFP3 instructions if available (ARM only)") |
| DEFINE_bool(enable_armv7, true, |
| "enable use of ARMv7 instructions if available (ARM only)") |
| |
| // bootstrapper.cc |
| DEFINE_string(expose_natives_as, NULL, "expose natives in global object") |
| DEFINE_string(expose_debug_as, NULL, "expose debug in global object") |
| DEFINE_bool(expose_gc, false, "expose gc extension") |
| DEFINE_int(stack_trace_limit, 10, "number of stack frames to capture") |
| |
| // builtins-ia32.cc |
| DEFINE_bool(inline_new, true, "use fast inline allocation") |
| |
| // checks.cc |
| DEFINE_bool(stack_trace_on_abort, true, |
| "print a stack trace if an assertion failure occurs") |
| |
| // codegen-ia32.cc / codegen-arm.cc |
| DEFINE_bool(trace, false, "trace function calls") |
| DEFINE_bool(defer_negation, true, "defer negation operation") |
| |
| // codegen.cc |
| DEFINE_bool(lazy, true, "use lazy compilation") |
| DEFINE_bool(debug_info, true, "add debug information to compiled functions") |
| |
| // compiler.cc |
| DEFINE_bool(strict, false, "strict error checking") |
| DEFINE_int(min_preparse_length, 1024, |
| "minimum length for automatic enable preparsing") |
| DEFINE_bool(full_compiler, true, "enable dedicated backend for run-once code") |
| DEFINE_bool(fast_compiler, false, "enable speculative optimizing backend") |
| DEFINE_bool(always_full_compiler, false, |
| "try to use the dedicated run-once backend for all code") |
| DEFINE_bool(always_fast_compiler, false, |
| "try to use the speculative optimizing backend for all code") |
| DEFINE_bool(trace_bailout, false, |
| "print reasons for falling back to using the classic V8 backend") |
| |
| // compilation-cache.cc |
| DEFINE_bool(compilation_cache, true, "enable compilation cache") |
| |
| // debug.cc |
| DEFINE_bool(remote_debugging, false, "enable remote debugging") |
| DEFINE_bool(trace_debug_json, false, "trace debugging JSON request/response") |
| DEFINE_bool(debugger_auto_break, true, |
| "automatically set the debug break flag when debugger commands are " |
| "in the queue") |
| |
| // frames.cc |
| DEFINE_int(max_stack_trace_source_length, 300, |
| "maximum length of function source code printed in a stack trace.") |
| |
| // heap.cc |
| DEFINE_int(max_new_space_size, 0, "max size of the new generation") |
| DEFINE_int(max_old_space_size, 0, "max size of the old generation") |
| DEFINE_bool(gc_global, false, "always perform global GCs") |
| DEFINE_int(gc_interval, -1, "garbage collect after <n> allocations") |
| DEFINE_bool(trace_gc, false, |
| "print one trace line following each garbage collection") |
| DEFINE_bool(trace_gc_verbose, false, |
| "print more details following each garbage collection") |
| DEFINE_bool(collect_maps, true, |
| "garbage collect maps from which no objects can be reached") |
| |
| // v8.cc |
| DEFINE_bool(use_idle_notification, true, |
| "Use idle notification to reduce memory footprint.") |
| // ic.cc |
| DEFINE_bool(use_ic, true, "use inline caching") |
| |
| // macro-assembler-ia32.cc |
| DEFINE_bool(native_code_counters, false, |
| "generate extra code for manipulating stats counters") |
| |
| // mark-compact.cc |
| DEFINE_bool(always_compact, false, "Perform compaction on every full GC") |
| DEFINE_bool(never_compact, false, |
| "Never perform compaction on full GC - testing only") |
| DEFINE_bool(cleanup_ics_at_gc, true, |
| "Flush inline caches prior to mark compact collection.") |
| DEFINE_bool(cleanup_caches_in_maps_at_gc, true, |
| "Flush code caches in maps during mark compact cycle.") |
| |
| DEFINE_bool(canonicalize_object_literal_maps, true, |
| "Canonicalize maps for object literals.") |
| |
| DEFINE_bool(use_big_map_space, true, |
| "Use big map space, but don't compact if it grew too big.") |
| |
| DEFINE_int(max_map_space_pages, MapSpace::kMaxMapPageIndex - 1, |
| "Maximum number of pages in map space which still allows to encode " |
| "forwarding pointers. That's actually a constant, but it's useful " |
| "to control it with a flag for better testing.") |
| |
| // mksnapshot.cc |
| DEFINE_bool(h, false, "print this message") |
| DEFINE_bool(new_snapshot, true, "use new snapshot implementation") |
| |
| // parser.cc |
| DEFINE_bool(allow_natives_syntax, false, "allow natives syntax") |
| |
| // rewriter.cc |
| DEFINE_bool(optimize_ast, true, "optimize the ast") |
| |
| // simulator-arm.cc and simulator-mips.cc |
| DEFINE_bool(trace_sim, false, "trace simulator execution") |
| DEFINE_int(stop_sim_at, 0, "Simulator stop after x number of instructions") |
| |
| // top.cc |
| DEFINE_bool(trace_exception, false, |
| "print stack trace when throwing exceptions") |
| DEFINE_bool(preallocate_message_memory, false, |
| "preallocate some memory to build stack traces.") |
| |
| // usage-analyzer.cc |
| DEFINE_bool(usage_computation, true, "compute variable usage counts") |
| |
| // v8.cc |
| DEFINE_bool(preemption, false, |
| "activate a 100ms timer that switches between V8 threads") |
| |
| // Regexp |
| DEFINE_bool(trace_regexps, false, "trace regexp execution") |
| DEFINE_bool(regexp_optimization, true, "generate optimized regexp code") |
| DEFINE_bool(regexp_entry_native, true, "use native code to enter regexp") |
| |
| // Testing flags test/cctest/test-{flags,api,serialization}.cc |
| DEFINE_bool(testing_bool_flag, true, "testing_bool_flag") |
| DEFINE_int(testing_int_flag, 13, "testing_int_flag") |
| DEFINE_float(testing_float_flag, 2.5, "float-flag") |
| DEFINE_string(testing_string_flag, "Hello, world!", "string-flag") |
| DEFINE_int(testing_prng_seed, 42, "Seed used for threading test randomness") |
| #ifdef WIN32 |
| DEFINE_string(testing_serialization_file, "C:\\Windows\\Temp\\serdes", |
| "file in which to testing_serialize heap") |
| #else |
| DEFINE_string(testing_serialization_file, "/tmp/serdes", |
| "file in which to serialize heap") |
| #endif |
| |
| // |
| // Dev shell flags |
| // |
| |
| DEFINE_bool(help, false, "Print usage message, including flags, on console") |
| DEFINE_bool(dump_counters, false, "Dump counters on exit") |
| DEFINE_bool(debugger, true, "Enable JavaScript debugger") |
| DEFINE_bool(remote_debugger, false, "Connect JavaScript debugger to the " |
| "debugger agent in another process") |
| DEFINE_bool(debugger_agent, false, "Enable debugger agent") |
| DEFINE_int(debugger_port, 5858, "Port to use for remote debugging") |
| DEFINE_string(map_counters, false, "Map counters to a file") |
| DEFINE_args(js_arguments, JSArguments(), |
| "Pass all remaining arguments to the script. Alias for \"--\".") |
| |
| // |
| // Debug only flags |
| // |
| #undef FLAG |
| #ifdef DEBUG |
| #define FLAG FLAG_FULL |
| #else |
| #define FLAG FLAG_READONLY |
| #endif |
| |
| // checks.cc |
| DEFINE_bool(enable_slow_asserts, false, |
| "enable asserts that are slow to execute") |
| |
| // codegen-ia32.cc / codegen-arm.cc |
| DEFINE_bool(trace_codegen, false, |
| "print name of functions for which code is generated") |
| DEFINE_bool(print_source, false, "pretty print source code") |
| DEFINE_bool(print_builtin_source, false, |
| "pretty print source code for builtins") |
| DEFINE_bool(print_ast, false, "print source AST") |
| DEFINE_bool(print_builtin_ast, false, "print source AST for builtins") |
| DEFINE_bool(print_json_ast, false, "print source AST as JSON") |
| DEFINE_bool(print_builtin_json_ast, false, |
| "print source AST for builtins as JSON") |
| DEFINE_bool(trace_calls, false, "trace calls") |
| DEFINE_bool(trace_builtin_calls, false, "trace builtins calls") |
| DEFINE_string(stop_at, "", "function name where to insert a breakpoint") |
| |
| // compiler.cc |
| DEFINE_bool(print_builtin_scopes, false, "print scopes for builtins") |
| DEFINE_bool(print_scopes, false, "print scopes") |
| DEFINE_bool(print_ir, false, "print the AST as seen by the backend") |
| |
| // contexts.cc |
| DEFINE_bool(trace_contexts, false, "trace contexts operations") |
| |
| // heap.cc |
| DEFINE_bool(gc_greedy, false, "perform GC prior to some allocations") |
| DEFINE_bool(gc_verbose, false, "print stuff during garbage collection") |
| DEFINE_bool(heap_stats, false, "report heap statistics before and after GC") |
| DEFINE_bool(code_stats, false, "report code statistics after GC") |
| DEFINE_bool(verify_heap, false, "verify heap pointers before and after GC") |
| DEFINE_bool(print_handles, false, "report handles after GC") |
| DEFINE_bool(print_global_handles, false, "report global handles after GC") |
| DEFINE_bool(print_rset, false, "print remembered sets before GC") |
| |
| // ic.cc |
| DEFINE_bool(trace_ic, false, "trace inline cache state transitions") |
| |
| // objects.cc |
| DEFINE_bool(trace_normalization, |
| false, |
| "prints when objects are turned into dictionaries.") |
| |
| // runtime.cc |
| DEFINE_bool(trace_lazy, false, "trace lazy compilation") |
| |
| // serialize.cc |
| DEFINE_bool(debug_serialization, false, |
| "write debug information into the snapshot.") |
| |
| // spaces.cc |
| DEFINE_bool(collect_heap_spill_statistics, false, |
| "report heap spill statistics along with heap_stats " |
| "(requires heap_stats)") |
| |
| // Regexp |
| DEFINE_bool(regexp_possessive_quantifier, |
| false, |
| "enable possessive quantifier syntax for testing") |
| DEFINE_bool(trace_regexp_bytecodes, false, "trace regexp bytecode execution") |
| DEFINE_bool(trace_regexp_assembler, |
| false, |
| "trace regexp macro assembler calls.") |
| |
| // |
| // Logging and profiling only flags |
| // |
| #undef FLAG |
| #ifdef ENABLE_LOGGING_AND_PROFILING |
| #define FLAG FLAG_FULL |
| #else |
| #define FLAG FLAG_READONLY |
| #endif |
| |
| // log.cc |
| DEFINE_bool(log, false, |
| "Minimal logging (no API, code, GC, suspect, or handles samples).") |
| DEFINE_bool(log_all, false, "Log all events to the log file.") |
| DEFINE_bool(log_runtime, false, "Activate runtime system %Log call.") |
| DEFINE_bool(log_api, false, "Log API events to the log file.") |
| DEFINE_bool(log_code, false, |
| "Log code events to the log file without profiling.") |
| DEFINE_bool(log_gc, false, |
| "Log heap samples on garbage collection for the hp2ps tool.") |
| DEFINE_bool(log_handles, false, "Log global handle events.") |
| DEFINE_bool(log_snapshot_positions, false, |
| "log positions of (de)serialized objects in the snapshot.") |
| DEFINE_bool(log_state_changes, false, "Log state changes.") |
| DEFINE_bool(log_suspect, false, "Log suspect operations.") |
| DEFINE_bool(log_producers, false, "Log stack traces of JS objects allocations.") |
| DEFINE_bool(compress_log, false, |
| "Compress log to save space (makes log less human-readable).") |
| DEFINE_bool(prof, false, |
| "Log statistical profiling information (implies --log-code).") |
| DEFINE_bool(prof_auto, true, |
| "Used with --prof, starts profiling automatically") |
| DEFINE_bool(prof_lazy, false, |
| "Used with --prof, only does sampling and logging" |
| " when profiler is active (implies --noprof_auto).") |
| DEFINE_bool(log_regexp, false, "Log regular expression execution.") |
| DEFINE_bool(sliding_state_window, false, |
| "Update sliding state window counters.") |
| DEFINE_string(logfile, "/sdcard/v8.log", "Specify the name of the log file.") |
| DEFINE_bool(oprofile, false, "Enable JIT agent for OProfile.") |
| |
| // |
| // Heap protection flags |
| // Using heap protection requires ENABLE_LOGGING_AND_PROFILING as well. |
| // |
| #ifdef ENABLE_HEAP_PROTECTION |
| #undef FLAG |
| #define FLAG FLAG_FULL |
| |
| DEFINE_bool(protect_heap, false, |
| "Protect/unprotect V8's heap when leaving/entring the VM.") |
| |
| #endif |
| |
| // |
| // Disassembler only flags |
| // |
| #undef FLAG |
| #ifdef ENABLE_DISASSEMBLER |
| #define FLAG FLAG_FULL |
| #else |
| #define FLAG FLAG_READONLY |
| #endif |
| |
| // code-stubs.cc |
| DEFINE_bool(print_code_stubs, false, "print code stubs") |
| |
| // codegen-ia32.cc / codegen-arm.cc |
| DEFINE_bool(print_code, false, "print generated code") |
| DEFINE_bool(print_builtin_code, false, "print generated code for builtins") |
| |
| // Cleanup... |
| #undef FLAG_FULL |
| #undef FLAG_READONLY |
| #undef FLAG |
| |
| #undef DEFINE_bool |
| #undef DEFINE_int |
| #undef DEFINE_string |
| |
| #undef FLAG_MODE_DECLARE |
| #undef FLAG_MODE_DEFINE |
| #undef FLAG_MODE_DEFINE_DEFAULTS |
| #undef FLAG_MODE_META |
