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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ART_RUNTIME_GC_SPACE_ROSALLOC_SPACE_INL_H_
     18 #define ART_RUNTIME_GC_SPACE_ROSALLOC_SPACE_INL_H_
     19 
     20 #include "base/memory_tool.h"
     21 #include "gc/allocator/rosalloc-inl.h"
     22 #include "gc/space/memory_tool_settings.h"
     23 #include "rosalloc_space.h"
     24 #include "thread.h"
     25 
     26 namespace art {
     27 namespace gc {
     28 namespace space {
     29 
     30 template<bool kMaybeIsRunningOnMemoryTool>
     31 inline size_t RosAllocSpace::AllocationSizeNonvirtual(mirror::Object* obj, size_t* usable_size) {
     32   // obj is a valid object. Use its class in the header to get the size.
     33   // Don't use verification since the object may be dead if we are sweeping.
     34   size_t size = obj->SizeOf<kVerifyNone>();
     35   bool add_redzones = false;
     36   if (kMaybeIsRunningOnMemoryTool) {
     37     add_redzones = RUNNING_ON_MEMORY_TOOL ? kMemoryToolAddsRedzones : 0;
     38     if (add_redzones) {
     39       size += 2 * kDefaultMemoryToolRedZoneBytes;
     40     }
     41   } else {
     42     DCHECK_EQ(RUNNING_ON_MEMORY_TOOL, 0U);
     43   }
     44   size_t size_by_size = rosalloc_->UsableSize(size);
     45   if (kIsDebugBuild) {
     46     // On memory tool, the red zone has an impact...
     47     const uint8_t* obj_ptr = reinterpret_cast<const uint8_t*>(obj);
     48     size_t size_by_ptr = rosalloc_->UsableSize(
     49         obj_ptr - (add_redzones ? kDefaultMemoryToolRedZoneBytes : 0));
     50     if (size_by_size != size_by_ptr) {
     51       LOG(INFO) << "Found a bad sized obj of size " << size
     52                 << " at " << std::hex << reinterpret_cast<intptr_t>(obj_ptr) << std::dec
     53                 << " size_by_size=" << size_by_size << " size_by_ptr=" << size_by_ptr;
     54     }
     55     DCHECK_EQ(size_by_size, size_by_ptr);
     56   }
     57   if (usable_size != nullptr) {
     58     *usable_size = size_by_size;
     59   }
     60   return size_by_size;
     61 }
     62 
     63 template<bool kThreadSafe>
     64 inline mirror::Object* RosAllocSpace::AllocCommon(Thread* self, size_t num_bytes,
     65                                                   size_t* bytes_allocated, size_t* usable_size,
     66                                                   size_t* bytes_tl_bulk_allocated) {
     67   size_t rosalloc_bytes_allocated = 0;
     68   size_t rosalloc_usable_size = 0;
     69   size_t rosalloc_bytes_tl_bulk_allocated = 0;
     70   if (!kThreadSafe) {
     71     Locks::mutator_lock_->AssertExclusiveHeld(self);
     72   }
     73   mirror::Object* result = reinterpret_cast<mirror::Object*>(
     74       rosalloc_->Alloc<kThreadSafe>(self, num_bytes, &rosalloc_bytes_allocated,
     75                                     &rosalloc_usable_size,
     76                                     &rosalloc_bytes_tl_bulk_allocated));
     77   if (LIKELY(result != nullptr)) {
     78     if (kDebugSpaces) {
     79       CHECK(Contains(result)) << "Allocation (" << reinterpret_cast<void*>(result)
     80             << ") not in bounds of allocation space " << *this;
     81     }
     82     DCHECK(bytes_allocated != nullptr);
     83     *bytes_allocated = rosalloc_bytes_allocated;
     84     DCHECK_EQ(rosalloc_usable_size, rosalloc_->UsableSize(result));
     85     if (usable_size != nullptr) {
     86       *usable_size = rosalloc_usable_size;
     87     }
     88     DCHECK(bytes_tl_bulk_allocated != nullptr);
     89     *bytes_tl_bulk_allocated = rosalloc_bytes_tl_bulk_allocated;
     90   }
     91   return result;
     92 }
     93 
     94 inline bool RosAllocSpace::CanAllocThreadLocal(Thread* self, size_t num_bytes) {
     95   return rosalloc_->CanAllocFromThreadLocalRun(self, num_bytes);
     96 }
     97 
     98 inline mirror::Object* RosAllocSpace::AllocThreadLocal(Thread* self, size_t num_bytes,
     99                                                        size_t* bytes_allocated) {
    100   DCHECK(bytes_allocated != nullptr);
    101   return reinterpret_cast<mirror::Object*>(
    102       rosalloc_->AllocFromThreadLocalRun(self, num_bytes, bytes_allocated));
    103 }
    104 
    105 inline size_t RosAllocSpace::MaxBytesBulkAllocatedForNonvirtual(size_t num_bytes) {
    106   return rosalloc_->MaxBytesBulkAllocatedFor(num_bytes);
    107 }
    108 
    109 }  // namespace space
    110 }  // namespace gc
    111 }  // namespace art
    112 
    113 #endif  // ART_RUNTIME_GC_SPACE_ROSALLOC_SPACE_INL_H_
    114