1    :  // Copyright 2015 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 "syzygy/bard/events/heap_create_event.h"
  16    :  
  17    :  #include "syzygy/bard/backdrops/heap_backdrop.h"
  18    :  #include "syzygy/trace/common/clock.h"
  19    :  
  20    :  namespace bard {
  21    :  namespace events {
  22    :  
  23    :  HeapCreateEvent::HeapCreateEvent(DWORD options,
  24    :                                   SIZE_T initial_size,
  25    :                                   SIZE_T maximum_size,
  26    :                                   HANDLE trace_heap)
  27    :      : options_(options),
  28    :        initial_size_(initial_size),
  29    :        maximum_size_(maximum_size),
  30  E :        trace_heap_(trace_heap) {
  31  E :  }
  32    :  
  33    :  bool HeapCreateEvent::Save(const EventInterface* const event,
  34  E :                             core::OutArchive* out_archive) {
  35  E :    DCHECK_NE(static_cast<EventInterface*>(nullptr), event);
  36  E :    DCHECK_NE(static_cast<core::OutArchive*>(nullptr), out_archive);
  37    :  
  38    :    const HeapCreateEvent* derived_event =
  39  E :        reinterpret_cast<const HeapCreateEvent*>(event);
  40    :  
  41    :    return out_archive->Save(derived_event->options_) &&
  42    :           out_archive->Save(derived_event->initial_size_) &&
  43    :           out_archive->Save(derived_event->maximum_size_) &&
  44    :           out_archive->Save(
  45  E :              reinterpret_cast<uintptr_t>(derived_event->trace_heap_));
  46  E :  }
  47    :  
  48    :  scoped_ptr<HeapCreateEvent> HeapCreateEvent::Load(
  49  E :      core::InArchive* in_archive) {
  50  E :    DCHECK_NE(static_cast<core::InArchive*>(nullptr), in_archive);
  51    :  
  52    :    DWORD options;
  53    :    SIZE_T initial_size;
  54    :    SIZE_T maximum_size;
  55    :    uintptr_t trace_heap;
  56    :    if (in_archive->Load(&options) &&
  57    :        in_archive->Load(&initial_size) &&
  58    :        in_archive->Load(&maximum_size) &&
  59  E :        in_archive->Load(&trace_heap)) {
  60    :      return scoped_ptr<HeapCreateEvent>(
  61    :          new HeapCreateEvent(options,
  62    :                              initial_size,
  63    :                              maximum_size,
  64  E :                              reinterpret_cast<HANDLE>(trace_heap)));
  65    :    }
  66  i :    return nullptr;
  67  E :  }
  68    :  
  69  E :  bool HeapCreateEvent::Play(void* backdrop) {
  70  E :    DCHECK_NE(static_cast<void*>(nullptr), backdrop);
  71    :  
  72    :    using bard::backdrops::HeapBackdrop;
  73  E :    HeapBackdrop* heap_backdrop = reinterpret_cast<HeapBackdrop*>(backdrop);
  74    :  
  75  E :    uint64_t t0 = ::trace::common::GetTsc();
  76    :    HANDLE live_heap =
  77  E :        heap_backdrop->HeapCreate(options_, initial_size_, maximum_size_);
  78  E :    uint64_t t1 = ::trace::common::GetTsc();
  79    :  
  80  E :    if (!live_heap && trace_heap_) {
  81  E :      LOG(ERROR) << "HeapCreate failed to create a new heap.";
  82  E :      return false;
  83    :    }
  84    :  
  85  E :    if (live_heap) {
  86  E :      if (!trace_heap_) {
  87    :        // No need to keep this heap.
  88  i :        heap_backdrop->HeapDestroy(live_heap);
  89  E :      } else if (!heap_backdrop->heap_map().AddMapping(trace_heap_, live_heap)) {
  90  i :        return false;
  91    :      }
  92    :    }
  93    :  
  94  E :    heap_backdrop->UpdateStats(type(), t1 - t0);
  95    :  
  96  E :    return true;
  97  E :  }
  98    :  
  99  E :  bool HeapCreateEvent::Equals(const EventInterface* rhs) const {
 100  E :    DCHECK_NE(static_cast<EventInterface*>(nullptr), rhs);
 101    :  
 102  E :    if (rhs->type() != kHeapCreateEvent)
 103  i :      return false;
 104    :  
 105  E :    const auto e = reinterpret_cast<const HeapCreateEvent*>(rhs);
 106    :    if (options_ != e->options_ || initial_size_ != e->initial_size_ ||
 107  E :        maximum_size_ != e->maximum_size_ || trace_heap_ != e->trace_heap_) {
 108  E :      return false;
 109    :    }
 110    :  
 111  E :    return true;
 112  E :  }
 113    :  
 114    :  }  // namespace events
 115    :  }  // namespace bard