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      1 // Copyright (c) 2014, Google Inc.
      2 // All rights reserved.
      3 //
      4 // Redistribution and use in source and binary forms, with or without
      5 // modification, are permitted provided that the following conditions are
      6 // met:
      7 //
      8 //     * Redistributions of source code must retain the above copyright
      9 // notice, this list of conditions and the following disclaimer.
     10 //     * Redistributions in binary form must reproduce the above
     11 // copyright notice, this list of conditions and the following disclaimer
     12 // in the documentation and/or other materials provided with the
     13 // distribution.
     14 //    * Neither the name of Google Inc. nor the names of its
     15 // contributors may be used to endorse or promote products derived from
     16 // this software without specific prior written permission.
     17 //
     18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29 
     30 // microdump_processor.cc: A microdump processor.
     31 //
     32 // See microdump_processor.h for documentation.
     33 
     34 #include "google_breakpad/processor/microdump_processor.h"
     35 
     36 #include <assert.h>
     37 
     38 #include <string>
     39 
     40 #include "common/using_std_string.h"
     41 #include "google_breakpad/processor/call_stack.h"
     42 #include "google_breakpad/processor/microdump.h"
     43 #include "google_breakpad/processor/process_state.h"
     44 #include "google_breakpad/processor/stackwalker.h"
     45 #include "google_breakpad/processor/stack_frame_symbolizer.h"
     46 #include "processor/logging.h"
     47 
     48 namespace google_breakpad {
     49 
     50 MicrodumpProcessor::MicrodumpProcessor(StackFrameSymbolizer* frame_symbolizer)
     51     : frame_symbolizer_(frame_symbolizer) {
     52   assert(frame_symbolizer);
     53 }
     54 
     55 MicrodumpProcessor::~MicrodumpProcessor() {}
     56 
     57 ProcessResult MicrodumpProcessor::Process(const string &microdump_contents,
     58                                           ProcessState* process_state) {
     59   assert(process_state);
     60 
     61   process_state->Clear();
     62 
     63   if (microdump_contents.empty()) {
     64     BPLOG(ERROR) << "Microdump is empty.";
     65     return PROCESS_ERROR_MINIDUMP_NOT_FOUND;
     66   }
     67 
     68   Microdump microdump(microdump_contents);
     69   process_state->modules_ = microdump.GetModules()->Copy();
     70   scoped_ptr<Stackwalker> stackwalker(
     71       Stackwalker::StackwalkerForCPU(
     72                             &process_state->system_info_,
     73                             microdump.GetContext(),
     74                             microdump.GetMemory(),
     75                             process_state->modules_,
     76                             frame_symbolizer_));
     77 
     78   scoped_ptr<CallStack> stack(new CallStack());
     79   if (stackwalker.get()) {
     80     if (!stackwalker->Walk(stack.get(),
     81                            &process_state->modules_without_symbols_,
     82                            &process_state->modules_with_corrupt_symbols_)) {
     83       BPLOG(INFO) << "Processing was interrupted.";
     84       return PROCESS_SYMBOL_SUPPLIER_INTERRUPTED;
     85     }
     86   } else {
     87     BPLOG(ERROR) << "No stackwalker found for microdump.";
     88     return PROCESS_ERROR_NO_THREAD_LIST;
     89   }
     90 
     91   process_state->threads_.push_back(stack.release());
     92   process_state->thread_memory_regions_.push_back(microdump.GetMemory());
     93   process_state->crashed_ = true;
     94   process_state->requesting_thread_ = 0;
     95   process_state->system_info_ = *microdump.GetSystemInfo();
     96 
     97   return PROCESS_OK;
     98 }
     99 
    100 }  // namespace google_breakpad
    101