Coverage for /Syzygy/trace/parse/dump_trace_main.cc

CoverageLines executed / instrumented / missingexe / inst / missLanguageGroup
0.0%00474.C++source

Line-by-line coverage:

   1    :  // Copyright 2012 Google Inc. All Rights Reserved.
   2    :  //
   3    :  // Licensed under the Apache License, Version 2.0 (the "License");
   4    :  // you may not use this file except in compliance with the License.
   5    :  // You may obtain a copy of the License at
   6    :  //
   7    :  //     http://www.apache.org/licenses/LICENSE-2.0
   8    :  //
   9    :  // Unless required by applicable law or agreed to in writing, software
  10    :  // distributed under the License is distributed on an "AS IS" BASIS,
  11    :  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12    :  // See the License for the specific language governing permissions and
  13    :  // limitations under the License.
  14    :  
  15    :  #include <windows.h>  // NOLINT
  16    :  #include <stdio.h>
  17    :  #include <vector>
  18    :  
  19    :  #include "base/at_exit.h"
  20    :  #include "base/command_line.h"
  21    :  #include "base/file_util.h"
  22    :  #include "base/logging.h"
  23    :  #include "base/files/file_path.h"
  24    :  #include "base/threading/simple_thread.h"
  25    :  #include "base/win/event_trace_consumer.h"
  26    :  #include "base/win/event_trace_controller.h"
  27    :  #include "base/win/scoped_handle.h"
  28    :  #include "base/win/windows_version.h"
  29    :  #include "syzygy/common/indexed_frequency_data.h"
  30    :  #include "syzygy/trace/parse/parser.h"
  31    :  #include "syzygy/trace/service/service.h"
  32    :  
  33  m :  namespace {
  34    :  
  35  m :  using trace::parser::Parser;
  36  m :  using trace::parser::ParseEventHandler;
  37  m :  using trace::parser::ModuleInformation;
  38    :  
  39  m :  const char* GetIndexedDataTypeStr(uint8 data_type) {
  40  m :    const char* ret = NULL;
  41  m :    switch (data_type) {
  42  m :      case common::IndexedFrequencyData::BASIC_BLOCK_ENTRY:
  43  m :        ret = "basic-block entry counts";
  44  m :        break;
  45  m :      case common::IndexedFrequencyData::COVERAGE:
  46  m :        ret = "coverage entry counts";
  47  m :        break;
  48  m :      case common::IndexedFrequencyData::BRANCH:
  49  m :        ret = "branch entry counts";
  50  m :        break;
  51  m :      case common::IndexedFrequencyData::JUMP_TABLE:
  52  m :        ret = "jump-table case counts";
  53  m :        break;
  54  m :      default:
  55  m :        NOTREACHED();
  56  m :        break;
  57  m :    }
  58  m :    return ret;
  59  m :  }
  60    :  
  61  m :  class TraceFileDumper : public ParseEventHandler {
  62  m :   public:
  63  m :    explicit TraceFileDumper(FILE* file)
  64  m :        : file_(file ? file : stdout),
  65  m :          indentation_("") {
  66  m :    }
  67    :  
  68  m :    void PrintFunctionEvent(const char* event_type,
  69  m :                            base::Time time,
  70  m :                            DWORD process_id,
  71  m :                            DWORD thread_id,
  72  m :                            const TraceEnterExitEventData* data) {
  73  m :      DCHECK(event_type != NULL);
  74  m :      DCHECK(data != NULL);
  75  m :      DCHECK(data->function != NULL);
  76  m :      ::fprintf(file_,
  77  m :                "[%012lld] %s%s: process-id=%d; thread-id=%d; address=0x%08X\n",
  78  m :                time.ToInternalValue(),
  79  m :                indentation_,
  80  m :                event_type,
  81  m :                process_id,
  82  m :                thread_id,
  83  m :                data->function);
  84  m :    }
  85    :  
  86  m :    void PrintModuleEvent(const char* event_type,
  87  m :                          base::Time time,
  88  m :                          DWORD process_id,
  89  m :                          DWORD thread_id,
  90  m :                          const TraceModuleData* data) {
  91  m :      DCHECK(event_type != NULL);
  92  m :      DCHECK(data != NULL);
  93  m :      DCHECK(data->module_base_addr != NULL);
  94  m :      ::fprintf(file_,
  95  m :                "[%012lld] %s: process-id=%d; thread-id=%d;"
  96  m :                " module-name='%ls';"
  97  m :                " module-addr=0x%08X; module-size=%d\n",
  98  m :                time.ToInternalValue(),
  99  m :                event_type,
 100  m :                process_id,
 101  m :                thread_id,
 102  m :                data->module_name,
 103  m :                data->module_base_addr,
 104  m :                data->module_base_size);
 105  m :    }
 106    :  
 107  m :    void PrintOsVersionInfo(base::Time time,
 108  m :                            const OSVERSIONINFOEX& os_version_info) {
 109  m :      ::fprintf(file_,
 110  m :                "[%012lld] %sOsVersionInfo: platform_id=%d; product_type=%d; "
 111  m :                    "version=%d.%d; build=%d; service_pack=%d.%d\n",
 112  m :                time.ToInternalValue(),
 113  m :                indentation_,
 114  m :                os_version_info.dwPlatformId,
 115  m :                os_version_info.wProductType,
 116  m :                os_version_info.dwMajorVersion,
 117  m :                os_version_info.dwMinorVersion,
 118  m :                os_version_info.dwBuildNumber,
 119  m :                os_version_info.wServicePackMajor,
 120  m :                os_version_info.wServicePackMinor);
 121  m :    }
 122    :  
 123  m :    void PrintSystemInfo(base::Time time, const SYSTEM_INFO& system_info) {
 124  m :      ::fprintf(file_,
 125  m :                "[%012lld] %sSystemInfo: cpu_arch=%d; cpu_count=%d; "
 126  m :                    "cpu_level=%d; cpu_rev=%d\n",
 127  m :                time.ToInternalValue(),
 128  m :                indentation_,
 129  m :                system_info.wProcessorArchitecture,
 130  m :                system_info.dwNumberOfProcessors,
 131  m :                system_info.wProcessorLevel,
 132  m :                system_info.wProcessorRevision);
 133  m :    }
 134    :  
 135  m :    void PrintMemoryStatus(base::Time time, const MEMORYSTATUSEX& memory_status) {
 136  m :      ::fprintf(file_,
 137  m :                "[%012lld] %sMemoryStatus: load=%d; total_phys=%lld; "
 138  m :                    "avail_phys=%lld\n",
 139  m :                time.ToInternalValue(),
 140  m :                indentation_,
 141  m :                memory_status.dwMemoryLoad,
 142  m :                memory_status.ullTotalPhys,
 143  m :                memory_status.ullAvailPhys);
 144  m :    }
 145    :  
 146  m :    void PrintClockInfo(base::Time time,
 147  m :                        const trace::common::ClockInfo& clock_info) {
 148  m :      ::fprintf(file_,
 149  m :                "[%012lld] %sClockInfo: file_time=0x%08X%08X; "
 150  m :                "ticks_reference=%llu; tsc_reference=%llu; "
 151  m :                "ticks_info.frequency=%llu; ticks_info.resolution=%llu; "
 152  m :                "tsc_info.frequency=%llu; tsc_info.resolution=%llu\n",
 153  m :                time.ToInternalValue(),
 154  m :                indentation_,
 155  m :                clock_info.file_time.dwHighDateTime,
 156  m :                clock_info.file_time.dwLowDateTime,
 157  m :                clock_info.ticks_reference,
 158  m :                clock_info.tsc_reference,
 159  m :                clock_info.ticks_info.frequency,
 160  m :                clock_info.ticks_info.resolution,
 161  m :                clock_info.tsc_info.frequency,
 162  m :                clock_info.tsc_info.resolution);
 163  m :    }
 164    :  
 165  m :    void PrintEnvironmentString(base::Time time,
 166  m :                                const std::wstring& key,
 167  m :                                const std::wstring& value) {
 168  m :      ::fprintf(file_,
 169  m :                "[%012lld] %sEnvironment: %ls=%ls\n",
 170  m :                time.ToInternalValue(),
 171  m :                indentation_,
 172  m :                key.c_str(),
 173  m :                value.c_str());
 174  m :    }
 175    :  
 176  m :    void PrintEnvironmentStrings(base::Time time,
 177  m :                                 const TraceEnvironmentStrings& env_strings) {
 178  m :      for (size_t i = 0; i < env_strings.size(); ++i)
 179  m :        PrintEnvironmentString(time, env_strings[i].first, env_strings[i].second);
 180  m :    }
 181    :  
 182  m :    virtual void OnProcessStarted(base::Time time,
 183  m :                                  DWORD process_id,
 184  m :                                  const TraceSystemInfo* data) {
 185  m :      ::fprintf(file_,
 186  m :                "[%012lld] OnProcessStarted: process-id=%d\n",
 187  m :                time.ToInternalValue(),
 188  m :                process_id);
 189    :  
 190  m :      if (data == NULL)
 191  m :        return;
 192    :  
 193  m :      indentation_ = "    ";
 194  m :      PrintOsVersionInfo(time, data->os_version_info);
 195  m :      PrintSystemInfo(time, data->system_info);
 196  m :      PrintMemoryStatus(time, data->memory_status);
 197  m :      PrintClockInfo(time, data->clock_info);
 198  m :      PrintEnvironmentStrings(time, data->environment_strings);
 199  m :      indentation_ = "";
 200  m :    }
 201    :  
 202  m :    virtual void OnProcessEnded(base::Time time, DWORD process_id) {
 203  m :      ::fprintf(file_,
 204  m :                "[%012lld] OnProcessEnded: process-id=%d\n",
 205  m :                time.ToInternalValue(),
 206  m :                process_id);
 207  m :    }
 208    :  
 209  m :    virtual void OnFunctionEntry(base::Time time,
 210  m :                                 DWORD process_id,
 211  m :                                 DWORD thread_id,
 212  m :                                 const TraceEnterExitEventData* data) {
 213  m :      PrintFunctionEvent("OnFunctionEntry", time, process_id, thread_id, data);
 214  m :    }
 215    :  
 216  m :    virtual void OnFunctionExit(base::Time time,
 217  m :                                DWORD process_id,
 218  m :                                DWORD thread_id,
 219  m :                                const TraceEnterExitEventData* data) {
 220  m :      PrintFunctionEvent("OnFunctionEntry", time, process_id, thread_id, data);
 221  m :    }
 222    :  
 223  m :    virtual void OnBatchFunctionEntry(base::Time time,
 224  m :                                      DWORD process_id,
 225  m :                                      DWORD thread_id,
 226  m :                                      const TraceBatchEnterData* data) {
 227  m :      DCHECK(data != NULL);
 228  m :      DCHECK_EQ(thread_id, data->thread_id);
 229  m :      ::fprintf(file_,
 230  m :                "[%012lld] OnBatchFunctionEntry: " \
 231  m :                    "process-id=%d; thread-id=%d; num-calls=%d\n",
 232  m :                time.ToInternalValue(),
 233  m :                process_id,
 234  m :                thread_id,
 235  m :                data->num_calls);
 236    :  
 237    :      // Explode the batch event into individual function entry events.
 238  m :      TraceEnterExitEventData new_data = {};
 239  m :      indentation_ = "    ";
 240  m :      for (size_t i = 0; i < data->num_calls; ++i) {
 241  m :        new_data.function = data->calls[i].function;
 242  m :        OnFunctionEntry(time, process_id, thread_id, &new_data);
 243  m :      }
 244  m :      indentation_ = "";
 245  m :    }
 246    :  
 247  m :    virtual void OnProcessAttach(base::Time time,
 248  m :                                 DWORD process_id,
 249  m :                                 DWORD thread_id,
 250  m :                                 const TraceModuleData* data) {
 251  m :      PrintModuleEvent("OnProcessAttach", time, process_id, thread_id, data);
 252  m :    }
 253    :  
 254  m :    virtual void OnProcessDetach(base::Time time,
 255  m :                                 DWORD process_id,
 256  m :                                 DWORD thread_id,
 257  m :                                 const TraceModuleData* data) {
 258  m :      PrintModuleEvent("OnProcessDetach", time, process_id, thread_id, data);
 259  m :    }
 260    :  
 261  m :    virtual void OnThreadAttach(base::Time time,
 262  m :                                DWORD process_id,
 263  m :                                DWORD thread_id,
 264  m :                                const TraceModuleData* data) {
 265  m :      PrintModuleEvent("OnThreadAttach", time, process_id, thread_id, data);
 266  m :    }
 267    :  
 268  m :    virtual void OnThreadDetach(base::Time time,
 269  m :                                DWORD process_id,
 270  m :                                DWORD thread_id,
 271  m :                                const TraceModuleData* data) {
 272  m :      PrintModuleEvent("OnThreadDetach", time, process_id, thread_id, data);
 273  m :    }
 274    :  
 275  m :    virtual void OnInvocationBatch(base::Time time,
 276  m :                                   DWORD process_id,
 277  m :                                   DWORD thread_id,
 278  m :                                   size_t num_invocations,
 279  m :                                   const TraceBatchInvocationInfo* data) {
 280  m :      DCHECK(data != NULL);
 281  m :      ::fprintf(file_,
 282  m :                "[%012lld] OnInvocationBatch: process-id=%d; thread-id=%d;\n",
 283  m :                time.ToInternalValue(),
 284  m :                process_id,
 285  m :                thread_id);
 286  m :      for (size_t i = 0; i < num_invocations; ++i) {
 287  m :        const InvocationInfo& invocation = data->invocations[i];
 288    :  
 289  m :        if ((invocation.flags & kCallerIsSymbol) != 0) {
 290  m :          ::fprintf(file_,
 291  m :                    "    caller_sym=0x%X, offs=%d;",
 292  m :                    invocation.caller_symbol_id,
 293  m :                    invocation.caller_offset);
 294  m :        } else {
 295  m :          ::fprintf(file_,
 296  m :                    "    caller=0x%08X;",
 297  m :                    invocation.caller);
 298  m :        }
 299    :  
 300  m :        if ((invocation.flags & kFunctionIsSymbol) != 0) {
 301  m :          ::fprintf(file_, " function_sym=0x%X;", invocation.function_symbol_id);
 302  m :        } else {
 303  m :          ::fprintf(file_, " function=0x%08X;", invocation.function);
 304  m :        }
 305    :  
 306  m :        ::fprintf(file_,
 307  m :                  " num-calls=%d;\n"
 308  m :                  "    cycles-min=%lld; cycles-max=%lld; cycles-sum=%lld\n",
 309  m :                  data->invocations[i].num_calls,
 310  m :                  data->invocations[i].cycles_min,
 311  m :                  data->invocations[i].cycles_max,
 312  m :                  data->invocations[i].cycles_sum);
 313  m :      }
 314  m :    }
 315    :  
 316  m :    virtual void OnThreadName(base::Time time,
 317  m :                              DWORD process_id,
 318  m :                              DWORD thread_id,
 319  m :                              const base::StringPiece& thread_name) OVERRIDE {
 320  m :      ::fprintf(file_, "[%012lld] OnThreadName: process-id=%d; thread-id=%d;\n"
 321  m :                "    name=%s\n",
 322  m :                time.ToInternalValue(), process_id, thread_id,
 323  m :                thread_name.as_string().c_str());
 324  m :    }
 325    :  
 326  m :    virtual void OnIndexedFrequency(
 327  m :        base::Time time,
 328  m :        DWORD process_id,
 329  m :        DWORD thread_id,
 330  m :        const TraceIndexedFrequencyData* data) OVERRIDE {
 331  m :      DCHECK(data != NULL);
 332  m :      ::fprintf(file_,
 333  m :                "[%012lld] OnIndexedFrequency: process-id=%d; thread-id=%d;\n"
 334  m :                "    module-base-addr=0x%08X; module-base-size=%d\n"
 335  m :                "    module-checksum=0x%08X; module-time-date-stamp=0x%08X\n"
 336  m :                "    frequency-size=%d; num_columns=%d; num-entries=%d;\n"
 337  m :                "    data-type=%s;\n",
 338  m :                time.ToInternalValue(),
 339  m :                process_id,
 340  m :                thread_id,
 341  m :                data->module_base_addr,
 342  m :                data->module_base_size,
 343  m :                data->module_checksum,
 344  m :                data->module_time_date_stamp,
 345  m :                data->frequency_size,
 346  m :                data->num_columns,
 347  m :                data->num_entries,
 348  m :                GetIndexedDataTypeStr(data->data_type));
 349  m :    }
 350    :  
 351  m :    virtual void OnDynamicSymbol(DWORD process_id,
 352  m :                                 uint32 symbol_id,
 353  m :                                 const base::StringPiece& symbol_name) OVERRIDE {
 354  m :      ::fprintf(file_, "OnDynamicSymbol: process-id=%d;\n"
 355  m :                "    symbol_id=%d\n"
 356  m :                "    symbol_name=%s\n",
 357  m :                process_id, symbol_id, symbol_name.as_string().c_str());
 358  m :    }
 359    :  
 360  m :    virtual void OnSampleData(base::Time time,
 361  m :                              DWORD process_id,
 362  m :                              const TraceSampleData* data) OVERRIDE {
 363  m :      DCHECK(data != NULL);
 364    :  
 365  m :      uint64 samples = 0;
 366  m :      for (uint32 i = 0; i < data->bucket_count; ++i)
 367  m :        samples += data->buckets[i];
 368    :  
 369  m :      ::fprintf(file_,
 370  m :                "[%012lld] OnSampleData: process-id=%d;\n"
 371  m :                "    module-base-addr=0x%08X;\n"
 372  m :                "    module-size=%d; module-checksum=0x%08X;\n"
 373  m :                "    module-time-date-stamp=0x%08X; bucket-size=%d;\n"
 374  m :                "    bucket-start=0x%08x; bucket-count=%d;\n"
 375  m :                "    sampling-start-time=0x%016llx;\n"
 376  m :                "    sampling-end-time=0x%016llx; sampling-interval=0x%016llx;\n"
 377  m :                "    samples=%lld\n",
 378  m :                time.ToInternalValue(),
 379  m :                process_id,
 380  m :                data->module_base_addr,
 381  m :                data->module_size,
 382  m :                data->module_checksum,
 383  m :                data->module_time_date_stamp,
 384  m :                data->bucket_size,
 385  m :                data->bucket_start,
 386  m :                data->bucket_count,
 387  m :                data->sampling_start_time,
 388  m :                data->sampling_end_time,
 389  m :                data->sampling_interval,
 390  m :                samples);
 391  m :    }
 392    :  
 393    :    // Issued for detailed function call records.
 394  m :    virtual void OnFunctionNameTableEntry(
 395  m :        base::Time time,
 396  m :        DWORD process_id,
 397  m :        const TraceFunctionNameTableEntry* data) OVERRIDE {
 398  m :      DCHECK_NE(static_cast<TraceFunctionNameTableEntry*>(nullptr), data);
 399  m :      ::fprintf(file_,
 400  m :                "[%012lld] OnFunctionNameTableEntry: process-id=%d;\n"
 401  m :                "    function-id=%d; name='%.*s'\n",
 402  m :                time.ToInternalValue(),
 403  m :                process_id,
 404  m :                data->function_id,
 405  m :                data->name_length,
 406  m :                data->name);
 407  m :      ProcessIdFunctionIdPair key(process_id, data->function_id);
 408  m :      std::string value(data->name, data->name_length);
 409  m :      function_names_.insert(std::make_pair(key, value));
 410  m :    }
 411    :  
 412    :    // Issued for detailed function call records.
 413  m :    virtual void OnStackTrace(
 414  m :        base::Time time,
 415  m :        DWORD process_id,
 416  m :        const TraceStackTrace* data) OVERRIDE {
 417  m :      DCHECK_NE(static_cast<TraceStackTrace*>(nullptr), data);
 418  m :      ::fprintf(file_,
 419  m :                "[%012lld] OnStackTrace: process-id=%d;\n"
 420  m :                "    stack-trace-id=0x%08X; num_frames=%d\n",
 421  m :                time.ToInternalValue(),
 422  m :                process_id,
 423  m :                data->stack_trace_id,
 424  m :                data->num_frames);
 425  m :    }
 426    :  
 427    :    // Issued for detailed function call records.
 428  m :    virtual void OnDetailedFunctionCall(
 429  m :        base::Time time,
 430  m :        DWORD process_id,
 431  m :        DWORD thread_id,
 432  m :        const TraceDetailedFunctionCall* data) OVERRIDE {
 433  m :      DCHECK_NE(static_cast<TraceDetailedFunctionCall*>(nullptr), data);
 434  m :      ::fprintf(file_,
 435  m :                "[%012lld] OnDetailedFunctionCall: process-id=%d;\n"
 436  m :                "    thread-id=%d; timestamp=0x%016llX;\n"
 437  m :                "    function-id=%d; stack-trace-id=0x%08X\n",
 438  m :                time.ToInternalValue(),
 439  m :                process_id,
 440  m :                thread_id,
 441  m :                data->timestamp,
 442  m :                data->function_id,
 443  m :                data->stack_trace_id);
 444    :  
 445    :      // Output the function name if we've seen it.
 446  m :      auto it = function_names_.find(
 447  m :          ProcessIdFunctionIdPair(process_id, data->function_id));
 448  m :      if (it != function_names_.end())
 449  m :        ::fprintf(file_, "    function_name='%s';\n", it->second.c_str());
 450    :  
 451    :      // Output the arguments summary info.
 452  m :      const uint32* argument_lengths = reinterpret_cast<const uint32*>(
 453  m :          data->argument_data);
 454  m :      uint32 argument_count = 0;
 455  m :      if (data->argument_data_size > 0) {
 456  m :        argument_count = *argument_lengths;
 457  m :        argument_lengths++;
 458  m :      }
 459  m :      ::fprintf(file_, "    argument_data_size=%d; argument_count=%d\n",
 460  m :                data->argument_data_size, argument_count);
 461    :  
 462  m :      const uint8* argument_data = reinterpret_cast<const uint8*>(
 463  m :          argument_lengths + argument_count);
 464  m :      const uint8* argument_data_end = data->argument_data +
 465  m :          data->argument_data_size;
 466  m :      for (size_t i = 0; i < argument_count; ++i) {
 467  m :        ::fprintf(file_, "    argument[%d]:", i);
 468  m :        for (size_t j = 0; j < argument_lengths[i]; ++j) {
 469  m :          if (argument_data < argument_data_end) {
 470  m :            ::fprintf(file_, " %02X", (int)(*argument_data));
 471  m :            ++argument_data;
 472  m :          } else {
 473  m :            ::fprintf(file_, " <insufficient argument data>\n");
 474  m :            return;
 475  m :          }
 476  m :        }
 477  m :        ::fprintf(file_, ";\n");
 478  m :      }
 479  m :    }
 480    :  
 481  m :    virtual void OnComment(
 482  m :        base::Time time,
 483  m :        DWORD process_id,
 484  m :        const TraceComment* data) {
 485  m :      DCHECK_NE(static_cast<TraceComment*>(nullptr), data);
 486  m :      ::fprintf(file_,
 487  m :                "[%012lld] OnComment: process-id=%d;\n"
 488  m :                "    comment=\"%.*s\"\n",
 489  m :                time.ToInternalValue(),
 490  m :                process_id,
 491  m :                data->comment_size,
 492  m :                data->comment);
 493  m :    }
 494    :  
 495  m :   private:
 496  m :    FILE* file_;
 497  m :    const char* indentation_;
 498    :  
 499    :    // Stores function names per process. Used for symbolizing detailed
 500    :    // function call data. These are keyed be process ID and function ID.
 501  m :    typedef std::pair<DWORD, size_t> ProcessIdFunctionIdPair;
 502  m :    typedef std::map<ProcessIdFunctionIdPair, std::string> FunctionNameMap;
 503  m :    FunctionNameMap function_names_;
 504    :  
 505  m :    DISALLOW_COPY_AND_ASSIGN(TraceFileDumper);
 506  m :  };
 507    :  
 508  m :  bool DumpTraceFiles(FILE* out_file,
 509  m :                      const std::vector<base::FilePath>& file_paths) {
 510  m :    Parser parser;
 511  m :    TraceFileDumper dumper(out_file);
 512  m :    if (!parser.Init(&dumper))
 513  m :      return false;
 514    :  
 515  m :    std::vector<base::FilePath>::const_iterator iter = file_paths.begin();
 516  m :    for (; iter != file_paths.end(); ++iter) {
 517  m :      if (!parser.OpenTraceFile(*iter))
 518  m :        return false;
 519  m :    }
 520    :  
 521  m :    return parser.Consume() && !parser.error_occurred();
 522  m :  }
 523    :  
 524  m :  }  // namespace
 525    :  
 526  m :  int main(int argc, const char** argv) {
 527  m :    base::AtExitManager at_exit_manager;
 528  m :    CommandLine::Init(argc, argv);
 529    :  
 530  m :    logging::LoggingSettings settings;
 531  m :    settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
 532  m :    settings.lock_log = logging::DONT_LOCK_LOG_FILE;
 533  m :    settings.delete_old = logging::APPEND_TO_OLD_LOG_FILE;
 534  m :    if (!logging::InitLogging(settings))
 535  m :      return 1;
 536    :  
 537  m :    CommandLine* cmd_line = CommandLine::ForCurrentProcess();
 538  m :    CHECK(cmd_line != NULL);
 539    :  
 540  m :    std::vector<base::FilePath> trace_file_paths;
 541  m :    for (size_t i = 0; i < cmd_line->GetArgs().size(); ++i)
 542  m :      trace_file_paths.push_back(base::FilePath(cmd_line->GetArgs()[i]));
 543    :  
 544  m :    if (trace_file_paths.empty()) {
 545  m :      LOG(ERROR) << "No trace file paths specified.";
 546    :  
 547  m :      ::fprintf(stderr,
 548  m :                "Usage: %ls [--out=OUTPUT] TRACE_FILE(s)...\n\n",
 549  m :                cmd_line->GetProgram().value().c_str());
 550  m :      return 1;
 551  m :    }
 552    :  
 553  m :    base::FilePath out_file_path(cmd_line->GetSwitchValuePath("out"));
 554  m :    base::ScopedFILE out_file;
 555  m :    if (!out_file_path.empty()) {
 556  m :      out_file.reset(base::OpenFile(out_file_path, "w"));
 557  m :      if (out_file.get() == NULL) {
 558  m :        LOG(ERROR) << "Failed to open output file: '" << out_file_path.value()
 559  m :                   << "'.";
 560  m :        return 1;
 561  m :      }
 562  m :    }
 563    :  
 564  m :    if (!DumpTraceFiles(out_file.get(), trace_file_paths)) {
 565  m :      LOG(ERROR) << "Failed to dump trace files.";
 566  m :      return 1;
 567  m :    }
 568    :  
 569  m :    return 0;
 570  m :  }

Coverage information generated Thu Mar 26 16:15:41 2015.