src/flag-definitions.h
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00001 // Copyright 2008 the V8 project authors. All rights reserved. 00002 // Redistribution and use in source and binary forms, with or without 00003 // modification, are permitted provided that the following conditions are 00004 // met: 00005 // 00006 // * Redistributions of source code must retain the above copyright 00007 // notice, this list of conditions and the following disclaimer. 00008 // * Redistributions in binary form must reproduce the above 00009 // copyright notice, this list of conditions and the following 00010 // disclaimer in the documentation and/or other materials provided 00011 // with the distribution. 00012 // * Neither the name of Google Inc. nor the names of its 00013 // contributors may be used to endorse or promote products derived 00014 // from this software without specific prior written permission. 00015 // 00016 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00017 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00018 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00019 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00020 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00021 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00022 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00023 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00024 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00025 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00026 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00027 00028 // This file defines all of the flags. It is separated into different section, 00029 // for Debug, Release, Logging and Profiling, etc. To add a new flag, find the 00030 // correct section, and use one of the DEFINE_ macros, without a trailing ';'. 00031 // 00032 // This include does not have a guard, because it is a template-style include, 00033 // which can be included multiple times in different modes. It expects to have 00034 // a mode defined before it's included. The modes are FLAG_MODE_... below: 00035 00036 // We want to declare the names of the variables for the header file. Normally 00037 // this will just be an extern declaration, but for a readonly flag we let the 00038 // compiler make better optimizations by giving it the value. 00039 #if defined(FLAG_MODE_DECLARE) 00040 #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ 00041 extern ctype FLAG_##nam; 00042 #define FLAG_READONLY(ftype, ctype, nam, def, cmt) \ 00043 static ctype const FLAG_##nam = def; 00044 00045 // We want to supply the actual storage and value for the flag variable in the 00046 // .cc file. We only do this for writable flags. 00047 #elif defined(FLAG_MODE_DEFINE) 00048 #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ 00049 ctype FLAG_##nam = def; 00050 #define FLAG_READONLY(ftype, ctype, nam, def, cmt) 00051 00052 // We need to define all of our default values so that the Flag structure can 00053 // access them by pointer. These are just used internally inside of one .cc, 00054 // for MODE_META, so there is no impact on the flags interface. 00055 #elif defined(FLAG_MODE_DEFINE_DEFAULTS) 00056 #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ 00057 static ctype const FLAGDEFAULT_##nam = def; 00058 #define FLAG_READONLY(ftype, ctype, nam, def, cmt) 00059 00060 00061 // We want to write entries into our meta data table, for internal parsing and 00062 // printing / etc in the flag parser code. We only do this for writable flags. 00063 #elif defined(FLAG_MODE_META) 00064 #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ 00065 { Flag::TYPE_##ftype, #nam, &FLAG_##nam, &FLAGDEFAULT_##nam, cmt }, 00066 #define FLAG_READONLY(ftype, ctype, nam, def, cmt) 00067 00068 #else 00069 #error No mode supplied when including flags.defs 00070 #endif 00071 00072 #define DEFINE_bool(nam, def, cmt) FLAG(BOOL, bool, nam, def, cmt) 00073 #define DEFINE_int(nam, def, cmt) FLAG(INT, int, nam, def, cmt) 00074 #define DEFINE_float(nam, def, cmt) FLAG(FLOAT, double, nam, def, cmt) 00075 #define DEFINE_string(nam, def, cmt) FLAG(STRING, const char*, nam, def, cmt) 00076 00077 // 00078 // Flags in all modes. 00079 // 00080 #define FLAG FLAG_FULL 00081 00082 // assembler-ia32.cc / assembler-arm.cc 00083 DEFINE_bool(debug_code, false, 00084 "generate extra code (comments, assertions) for debugging") 00085 DEFINE_bool(emit_branch_hints, false, "emit branch hints") 00086 DEFINE_bool(push_pop_elimination, true, 00087 "eliminate redundant push/pops in assembly code") 00088 DEFINE_bool(print_push_pop_elimination, false, 00089 "print elimination of redundant push/pops in assembly code") 00090 00091 // bootstrapper.cc 00092 DEFINE_string(expose_natives_as, NULL, "expose natives in global object") 00093 DEFINE_string(expose_debug_as, NULL, "expose debug in global object") 00094 DEFINE_string(natives_file, NULL, "alternative natives file") 00095 DEFINE_bool(expose_gc, false, "expose gc extension") 00096 00097 // builtins-ia32.cc 00098 DEFINE_bool(inline_new, true, "use fast inline allocation") 00099 00100 // checks.cc 00101 DEFINE_bool(stack_trace_on_abort, true, 00102 "print a stack trace if an assertion failure occurs") 00103 00104 // codegen-ia32.cc / codegen-arm.cc 00105 DEFINE_bool(trace, false, "trace function calls") 00106 DEFINE_bool(defer_negation, true, "defer negation operation") 00107 DEFINE_bool(check_stack, true, 00108 "check stack for overflow, interrupt, breakpoint") 00109 00110 // codegen.cc 00111 DEFINE_bool(lazy, true, "use lazy compilation") 00112 DEFINE_bool(debug_info, true, "add debug information to compiled functions") 00113 00114 // compiler.cc 00115 DEFINE_bool(strict, false, "strict error checking") 00116 DEFINE_int(min_preparse_length, 1024, 00117 "Minimum length for automatic enable preparsing") 00118 00119 // debug.cc 00120 DEFINE_bool(remote_debugging, false, "enable remote debugging") 00121 DEFINE_bool(trace_debug_json, false, "trace debugging JSON request/response") 00122 00123 // execution.cc 00124 DEFINE_bool(call_regexp, false, "allow calls to RegExp objects") 00125 00126 // frames.cc 00127 DEFINE_int(max_stack_trace_source_length, 300, 00128 "maximum length of function source code printed in a stack trace.") 00129 00130 // heap.cc 00131 DEFINE_int(new_space_size, 0, "size of (each semispace in) the new generation") 00132 DEFINE_int(old_space_size, 0, "size of the old generation") 00133 DEFINE_bool(gc_global, false, "always perform global GCs") 00134 DEFINE_int(gc_interval, -1, "garbage collect after <n> allocations") 00135 DEFINE_bool(trace_gc, false, 00136 "print one trace line following each garbage collection") 00137 DEFINE_bool(collect_maps, true, 00138 "garbage collect maps from which no objects can be reached") 00139 00140 // ic.cc 00141 DEFINE_bool(use_ic, true, "use inline caching") 00142 00143 // macro-assembler-ia32.cc 00144 DEFINE_bool(native_code_counters, false, 00145 "generate extra code for manipulating stats counters") 00146 00147 // mark-compact.cc 00148 DEFINE_bool(always_compact, false, "Perform compaction on every full GC") 00149 DEFINE_bool(never_compact, false, 00150 "Never perform compaction on full GC - testing only") 00151 DEFINE_bool(cleanup_ics_at_gc, true, 00152 "Flush inline caches prior to mark compact collection.") 00153 DEFINE_bool(cleanup_caches_in_maps_at_gc, true, 00154 "Flush code caches in maps during mark compact cycle.") 00155 00156 DEFINE_bool(canonicalize_object_literal_maps, true, 00157 "Canonicalize maps for object literals.") 00158 00159 // mksnapshot.cc 00160 DEFINE_bool(h, false, "print this message") 00161 00162 // parser.cc 00163 DEFINE_bool(allow_natives_syntax, false, "allow natives syntax") 00164 00165 // rewriter.cc 00166 DEFINE_bool(optimize_ast, true, "optimize the ast") 00167 00168 // simulator-arm.cc 00169 DEFINE_bool(trace_sim, false, "trace simulator execution") 00170 DEFINE_int(stop_sim_at, 0, "Simulator stop after x number of instructions") 00171 00172 // top.cc 00173 DEFINE_bool(trace_exception, false, 00174 "print stack trace when throwing exceptions") 00175 DEFINE_bool(preallocate_message_memory, false, 00176 "preallocate some memory to build stack traces.") 00177 00178 // usage-analyzer.cc 00179 DEFINE_bool(usage_computation, true, "compute variable usage counts") 00180 00181 // v8.cc 00182 DEFINE_bool(preemption, false, 00183 "activate a 100ms timer that switches between V8 threads") 00184 00185 // Testing flags test/cctest/test-{flags,api,serialization}.cc 00186 DEFINE_bool(testing_bool_flag, true, "testing_bool_flag") 00187 DEFINE_int(testing_int_flag, 13, "testing_int_flag") 00188 DEFINE_float(testing_float_flag, 2.5, "float-flag") 00189 DEFINE_string(testing_string_flag, "Hello, world!", "string-flag") 00190 DEFINE_int(testing_prng_seed, 42, "Seed used for threading test randomness") 00191 #ifdef WIN32 00192 DEFINE_string(testing_serialization_file, "C:\\Windows\\Temp\\serdes", 00193 "file in which to testing_serialize heap") 00194 #else 00195 DEFINE_string(testing_serialization_file, "/tmp/serdes", 00196 "file in which to serialize heap") 00197 #endif 00198 00199 // 00200 // Dev shell flags 00201 // 00202 00203 DEFINE_bool(dump_counters, false, "Dump counters on exit") 00204 00205 // 00206 // Debug only flags 00207 // 00208 #undef FLAG 00209 #ifdef DEBUG 00210 #define FLAG FLAG_FULL 00211 #else 00212 #define FLAG FLAG_READONLY 00213 #endif 00214 00215 // checks.cc 00216 DEFINE_bool(enable_slow_asserts, false, 00217 "enable asserts that are slow to execute") 00218 00219 // code-stubs.cc 00220 DEFINE_bool(print_code_stubs, false, "print code stubs") 00221 00222 // codegen-ia32.cc / codegen-arm.cc 00223 DEFINE_bool(trace_codegen, false, 00224 "print name of functions for which code is generated") 00225 DEFINE_bool(print_builtin_code, false, "print generated code for builtins") 00226 DEFINE_bool(print_source, false, "pretty print source code") 00227 DEFINE_bool(print_builtin_source, false, 00228 "pretty print source code for builtins") 00229 DEFINE_bool(print_ast, false, "print source AST") 00230 DEFINE_bool(print_builtin_ast, false, "print source AST for builtins") 00231 DEFINE_bool(trace_calls, false, "trace calls") 00232 DEFINE_bool(trace_builtin_calls, false, "trace builtins calls") 00233 DEFINE_string(stop_at, "", "function name where to insert a breakpoint") 00234 00235 // compiler.cc 00236 DEFINE_bool(print_builtin_scopes, false, "print scopes for builtins") 00237 DEFINE_bool(print_scopes, false, "print scopes") 00238 00239 // contexts.cc 00240 DEFINE_bool(trace_contexts, false, "trace contexts operations") 00241 00242 // heap.cc 00243 DEFINE_bool(gc_greedy, false, "perform GC prior to some allocations") 00244 DEFINE_bool(gc_verbose, false, "print stuff during garbage collection") 00245 DEFINE_bool(heap_stats, false, "report heap statistics before and after GC") 00246 DEFINE_bool(code_stats, false, "report code statistics after GC") 00247 DEFINE_bool(verify_heap, false, "verify heap pointers before and after GC") 00248 DEFINE_bool(print_handles, false, "report handles after GC") 00249 DEFINE_bool(print_global_handles, false, "report global handles after GC") 00250 DEFINE_bool(print_rset, false, "print remembered sets before GC") 00251 00252 // ic.cc 00253 DEFINE_bool(trace_ic, false, "trace inline cache state transitions") 00254 00255 // objects.cc 00256 DEFINE_bool(trace_normalization, 00257 false, 00258 "prints when objects are turned into dictionaries.") 00259 00260 // runtime.cc 00261 DEFINE_bool(trace_lazy, false, "trace lazy compilation") 00262 00263 // serialize.cc 00264 DEFINE_bool(debug_serialization, false, 00265 "write debug information into the snapshot.") 00266 00267 // spaces.cc 00268 DEFINE_bool(collect_heap_spill_statistics, false, 00269 "report heap spill statistics along with heap_stats " 00270 "(requires heap_stats)") 00271 00272 // 00273 // Logging and profiling only flags 00274 // 00275 #undef FLAG 00276 #ifdef ENABLE_LOGGING_AND_PROFILING 00277 #define FLAG FLAG_FULL 00278 #else 00279 #define FLAG FLAG_READONLY 00280 #endif 00281 00282 // log.cc 00283 DEFINE_bool(log, false, 00284 "Minimal logging (no API, code, GC, suspect, or handles samples).") 00285 DEFINE_bool(log_all, false, "Log all events to the log file.") 00286 DEFINE_bool(log_api, false, "Log API events to the log file.") 00287 DEFINE_bool(log_code, false, 00288 "Log code events to the log file without profiling.") 00289 DEFINE_bool(log_gc, false, 00290 "Log heap samples on garbage collection for the hp2ps tool.") 00291 DEFINE_bool(log_handles, false, "Log global handle events.") 00292 DEFINE_bool(log_state_changes, false, "Log state changes.") 00293 DEFINE_bool(log_suspect, false, "Log suspect operations.") 00294 DEFINE_bool(prof, false, 00295 "Log statistical profiling information (implies --log-code).") 00296 DEFINE_bool(log_regexp, false, "Log regular expression execution.") 00297 DEFINE_bool(sliding_state_window, false, 00298 "Update sliding state window counters.") 00299 DEFINE_string(logfile, "v8.log", "Specify the name of the log file.") 00300 00301 // 00302 // Disassembler only flags 00303 // 00304 #undef FLAG 00305 #ifdef ENABLE_DISASSEMBLER 00306 #define FLAG FLAG_FULL 00307 #else 00308 #define FLAG FLAG_READONLY 00309 #endif 00310 00311 // codegen-ia32.cc / codegen-arm.cc 00312 DEFINE_bool(print_code, false, "print generated code") 00313 00314 // Cleanup... 00315 #undef FLAG_FULL 00316 #undef FLAG_READONLY 00317 #undef FLAG 00318 00319 #undef DEFINE_bool 00320 #undef DEFINE_int 00321 #undef DEFINE_string 00322 00323 #undef FLAG_MODE_DECLARE 00324 #undef FLAG_MODE_DEFINE 00325 #undef FLAG_MODE_DEFINE_DEFAULTS 00326 #undef FLAG_MODE_META
