path: root/doc/node.1

.TH NODE.JS "1" "2010" "" ""


.SH "NAME"
node \- Server-side JavaScript

.SH SYNOPSIS


.B node
[
.B \-v
]
[
.B \-\-debug
|
.B \-\-debug-brk
]
[
.B \-\-v8-options
]
.br
     [
.B \-e
.I command
|
.I script.js
]
[
.I arguments
]

Execute without arguments to start the REPL.


.SH DESCRIPTION

Node is a set of libraries for javascript which allows
it to be used outside of the browser. It is primarily
focused on creating simple, easy to build network clients
and servers.


.SH ENVIRONMENT VARIABLES

.IP NODE_PATH
\':\'\-separated list of directories prefixed to the module search path,
require.paths.

.IP NODE_MODULE_CONTEXTS
If set to 1 then modules will load in their own global contexts.

.IP NODE_DISABLE_COLORS
If set to 1 then colors will not be used in the REPL.

.IP NODE_USE_UV
If set to 1 then Node will use the new libuv-based backend.

.SH V8 OPTIONS

  --crankshaft (use crankshaft)
        type: bool  default: false
  --hydrogen_filter (hydrogen use/trace filter)
        type: string  default: 
  --use_hydrogen (use generated hydrogen for compilation)
        type: bool  default: true
  --build_lithium (use lithium chunk builder)
        type: bool  default: true
  --alloc_lithium (use lithium register allocator)
        type: bool  default: true
  --use_lithium (use lithium code generator)
        type: bool  default: true
  --use_range (use hydrogen range analysis)
        type: bool  default: true
  --eliminate_dead_phis (eliminate dead phis)
        type: bool  default: true
  --use_gvn (use hydrogen global value numbering)
        type: bool  default: true
  --use_peeling (use loop peeling)
        type: bool  default: false
  --use_canonicalizing (use hydrogen instruction canonicalizing)
        type: bool  default: true
  --use_inlining (use function inlining)
        type: bool  default: true
  --limit_inlining (limit code size growth from inlining)
        type: bool  default: true
  --eliminate_empty_blocks (eliminate empty blocks)
        type: bool  default: true
  --loop_invariant_code_motion (loop invariant code motion)
        type: bool  default: true
  --time_hydrogen (timing for hydrogen)
        type: bool  default: false
  --trace_hydrogen (trace generated hydrogen to file)
        type: bool  default: false
  --trace_inlining (trace inlining decisions)
        type: bool  default: false
  --trace_alloc (trace register allocator)
        type: bool  default: false
  --trace_range (trace range analysis)
        type: bool  default: false
  --trace_gvn (trace global value numbering)
        type: bool  default: false
  --trace_representation (trace representation types)
        type: bool  default: false
  --stress_pointer_maps (pointer map for every instruction)
        type: bool  default: false
  --stress_environments (environment for every instruction)
        type: bool  default: false
  --deopt_every_n_times (deoptimize every n times a deopt point is passed)
        type: int  default: 0
  --process_arguments_object (try to deal with arguments object)
        type: bool  default: true
  --trap_on_deopt (put a break point before deoptimizing)
        type: bool  default: false
  --deoptimize_uncommon_cases (deoptimize uncommon cases)
        type: bool  default: true
  --polymorphic_inlining (polymorphic inlining)
        type: bool  default: true
  --aggressive_loop_invariant_motion (aggressive motion of instructions out of loops)
        type: bool  default: true
  --use_osr (use on-stack replacement)
        type: bool  default: true
  --trace_osr (trace on-stack replacement)
        type: bool  default: false
  --stress_runs (number of stress runs)
        type: int  default: 0
  --optimize_closures (optimize closures)
        type: bool  default: true
  --debug_code (generate extra code (assertions) for debugging)
        type: bool  default: false
  --code_comments (emit comments in code disassembly)
        type: bool  default: false
  --emit_branch_hints (emit branch hints)
        type: bool  default: false
  --peephole_optimization (perform peephole optimizations in assembly code)
        type: bool  default: true
  --print_peephole_optimization (print peephole optimizations in assembly code)
        type: bool  default: false
  --enable_sse2 (enable use of SSE2 instructions if available)
        type: bool  default: true
  --enable_sse3 (enable use of SSE3 instructions if available)
        type: bool  default: true
  --enable_sse4_1 (enable use of SSE4.1 instructions if available)
        type: bool  default: true
  --enable_cmov (enable use of CMOV instruction if available)
        type: bool  default: true
  --enable_rdtsc (enable use of RDTSC instruction if available)
        type: bool  default: true
  --enable_sahf (enable use of SAHF instruction if available (X64 only))
        type: bool  default: true
  --enable_vfp3 (enable use of VFP3 instructions if available (ARM only))
        type: bool  default: true
  --enable_armv7 (enable use of ARMv7 instructions if available (ARM only))
        type: bool  default: true
  --expose_natives_as (expose natives in global object)
        type: string  default: NULL
  --expose_debug_as (expose debug in global object)
        type: string  default: NULL
  --expose_gc (expose gc extension)
        type: bool  default: false
  --expose_externalize_string (expose externalize string extension)
        type: bool  default: false
  --stack_trace_limit (number of stack frames to capture)
        type: int  default: 10
  --disable_native_files (disable builtin natives files)
        type: bool  default: false
  --inline_new (use fast inline allocation)
        type: bool  default: true
  --stack_trace_on_abort (print a stack trace if an assertion failure occurs)
        type: bool  default: true
  --trace (trace function calls)
        type: bool  default: false
  --defer_negation (defer negation operation)
        type: bool  default: true
  --mask_constants_with_cookie (use random jit cookie to mask large constants)
        type: bool  default: true
  --lazy (use lazy compilation)
        type: bool  default: true
  --trace_opt (trace lazy optimization)
        type: bool  default: false
  --trace_opt_stats (trace lazy optimization statistics)
        type: bool  default: false
  --opt (use adaptive optimizations)
        type: bool  default: true
  --opt_eagerly (be more eager when adaptively optimizing)
        type: bool  default: false
  --always_opt (always try to optimize functions)
        type: bool  default: false
  --prepare_always_opt (prepare for turning on always opt)
        type: bool  default: false
  --debug_info (add debug information to compiled functions)
        type: bool  default: true
  --deopt (support deoptimization)
        type: bool  default: true
  --trace_deopt (trace deoptimization)
        type: bool  default: false
  --strict (strict error checking)
        type: bool  default: false
  --min_preparse_length (minimum length for automatic enable preparsing)
        type: int  default: 1024
  --full_compiler (enable dedicated backend for run-once code)
        type: bool  default: true
  --always_full_compiler (try to use the dedicated run-once backend for all code)
        type: bool  default: false
  --trace_bailout (print reasons for falling back to using the classic V8 backend)
        type: bool  default: false
  --safe_int32_compiler (enable optimized side-effect-free int32 expressions.)
        type: bool  default: true
  --use_flow_graph (perform flow-graph based optimizations)
        type: bool  default: false
  --compilation_cache (enable compilation cache)
        type: bool  default: true
  --loop_peeling (Peel off the first iteration of loops.)
        type: bool  default: false
  --remote_debugging (enable remote debugging)
        type: bool  default: false
  --trace_debug_json (trace debugging JSON request/response)
        type: bool  default: false
  --debugger_auto_break (automatically set the debug break flag when debugger commands are in the queue)
        type: bool  default: true
  --enable_liveedit (enable liveedit experimental feature)
        type: bool  default: true
  --stack_size (default size of stack region v8 is allowed to use (in KkBytes))
        type: int  default: 1024
  --max_stack_trace_source_length (maximum length of function source code printed in a stack trace.)
        type: int  default: 300
  --always_inline_smi_code (always inline smi code in non-opt code)
        type: bool  default: false
  --max_new_space_size (max size of the new generation (in kBytes))
        type: int  default: 0
  --max_old_space_size (max size of the old generation (in Mbytes))
        type: int  default: 0
  --max_executable_size (max size of executable memory (in Mbytes))
        type: int  default: 0
  --gc_global (always perform global GCs)
        type: bool  default: false
  --gc_interval (garbage collect after <n> allocations)
        type: int  default: -1
  --trace_gc (print one trace line following each garbage collection)
        type: bool  default: false
  --trace_gc_nvp (print one detailed trace line in name=value format after each garbage collection)
        type: bool  default: false
  --print_cumulative_gc_stat (print cumulative GC statistics in name=value format on exit)
        type: bool  default: false
  --trace_gc_verbose (print more details following each garbage collection)
        type: bool  default: false
  --collect_maps (garbage collect maps from which no objects can be reached)
        type: bool  default: true
  --flush_code (flush code that we expect not to use again before full gc)
        type: bool  default: true
  --use_idle_notification (Use idle notification to reduce memory footprint.)
        type: bool  default: true
  --use_ic (use inline caching)
        type: bool  default: true
  --native_code_counters (generate extra code for manipulating stats counters)
        type: bool  default: false
  --always_compact (Perform compaction on every full GC)
        type: bool  default: false
  --never_compact (Never perform compaction on full GC - testing only)
        type: bool  default: false
  --cleanup_ics_at_gc (Flush inline caches prior to mark compact collection.)
        type: bool  default: true
  --cleanup_caches_in_maps_at_gc (Flush code caches in maps during mark compact cycle.)
        type: bool  default: true
  --random_seed (Default seed for initializing random generator (0, the default, means to use system random).)
        type: int  default: 0
  --canonicalize_object_literal_maps (Canonicalize maps for object literals.)
        type: bool  default: true
  --use_big_map_space (Use big map space, but don't compact if it grew too big.)
        type: bool  default: true
  --max_map_space_pages (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.)
        type: int  default: 65535
  --h (print this message)
        type: bool  default: false
  --new_snapshot (use new snapshot implementation)
        type: bool  default: true
  --use_verbose_printer (allows verbose printing)
        type: bool  default: true
  --allow_natives_syntax (allow natives syntax)
        type: bool  default: false
  --strict_mode (allow strict mode directives)
        type: bool  default: true
  --optimize_ast (optimize the ast)
        type: bool  default: true
  --trace_sim (Trace simulator execution)
        type: bool  default: false
  --check_icache (Check icache flushes in ARM simulator)
        type: bool  default: false
  --stop_sim_at (Simulator stop after x number of instructions)
        type: int  default: 0
  --sim_stack_alignment (Stack alingment in bytes in simulator (4 or 8, 8 is default))
        type: int  default: 8
  --trace_exception (print stack trace when throwing exceptions)
        type: bool  default: false
  --preallocate_message_memory (preallocate some memory to build stack traces.)
        type: bool  default: false
  --preemption (activate a 100ms timer that switches between V8 threads)
        type: bool  default: false
  --trace_regexps (trace regexp execution)
        type: bool  default: false
  --regexp_optimization (generate optimized regexp code)
        type: bool  default: true
  --regexp_entry_native (use native code to enter regexp)
        type: bool  default: true
  --testing_bool_flag (testing_bool_flag)
        type: bool  default: true
  --testing_int_flag (testing_int_flag)
        type: int  default: 13
  --testing_float_flag (float-flag)
        type: float  default: 2.500000
  --testing_string_flag (string-flag)
        type: string  default: Hello, world!
  --testing_prng_seed (Seed used for threading test randomness)
        type: int  default: 42
  --testing_serialization_file (file in which to serialize heap)
        type: string  default: /tmp/serdes
  --help (Print usage message, including flags, on console)
        type: bool  default: true
  --dump_counters (Dump counters on exit)
        type: bool  default: false
  --debugger (Enable JavaScript debugger)
        type: bool  default: false
  --remote_debugger (Connect JavaScript debugger to the debugger agent in another process)
        type: bool  default: false
  --debugger_agent (Enable debugger agent)
        type: bool  default: false
  --debugger_port (Port to use for remote debugging)
        type: int  default: 5858
  --map_counters (Map counters to a file)
        type: string  default: NULL
  --js_arguments (Pass all remaining arguments to the script. Alias for "--".)
        type: arguments  default: 
  --debug_compile_events (Enable debugger compile events)
        type: bool  default: true
  --debug_script_collected_events (Enable debugger script collected events)
        type: bool  default: true
  --gdbjit (enable GDBJIT interface (disables compacting GC))
        type: bool  default: false
  --gdbjit_full (enable GDBJIT interface for all code objects)
        type: bool  default: false
  --gdbjit_dump (dump elf objects with debug info to disk)
        type: bool  default: false
  --log (Minimal logging (no API, code, GC, suspect, or handles samples).)
        type: bool  default: false
  --log_all (Log all events to the log file.)
        type: bool  default: false
  --log_runtime (Activate runtime system %Log call.)
        type: bool  default: false
  --log_api (Log API events to the log file.)
        type: bool  default: false
  --log_code (Log code events to the log file without profiling.)
        type: bool  default: false
  --log_gc (Log heap samples on garbage collection for the hp2ps tool.)
        type: bool  default: false
  --log_handles (Log global handle events.)
        type: bool  default: false
  --log_snapshot_positions (log positions of (de)serialized objects in the snapshot.)
        type: bool  default: false
  --log_suspect (Log suspect operations.)
        type: bool  default: false
  --log_producers (Log stack traces of JS objects allocations.)
        type: bool  default: false
  --prof (Log statistical profiling information (implies --log-code).)
        type: bool  default: false
  --prof_auto (Used with --prof, starts profiling automatically)
        type: bool  default: true
  --prof_lazy (Used with --prof, only does sampling and logging when profiler is active (implies --noprof_auto).)
        type: bool  default: false
  --prof_browser_mode (Used with --prof, turns on browser-compatible mode for profiling.)
        type: bool  default: true
  --log_regexp (Log regular expression execution.)
        type: bool  default: false
  --sliding_state_window (Update sliding state window counters.)
        type: bool  default: false
  --logfile (Specify the name of the log file.)
        type: string  default: v8.log
  --ll_prof (Enable low-level linux profiler.)
        type: bool  default: false


.SH RESOURCES AND DOCUMENTATION

See the website for documentation http://nodejs.org/

Mailing list: http://groups.google.com/group/nodejs

IRC: irc.freenode.net #node.js