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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 "gc/allocator/rosalloc-inl.h"
     21 #include "gc/space/valgrind_settings.h"
     22 #include "rosalloc_space.h"
     23 #include "thread.h"
     24 
     25 namespace art {
     26 namespace gc {
     27 namespace space {
     28 
     29 template<bool kMaybeRunningOnValgrind>
     30 inline size_t RosAllocSpace::AllocationSizeNonvirtual(mirror::Object* obj, size_t* usable_size) {
     31   // obj is a valid object. Use its class in the header to get the size.
     32   // Don't use verification since the object may be dead if we are sweeping.
     33   size_t size = obj->SizeOf<kVerifyNone>();
     34   bool running_on_valgrind = false;
     35   if (kMaybeRunningOnValgrind) {
     36     running_on_valgrind = RUNNING_ON_VALGRIND != 0;
     37     if (running_on_valgrind) {
     38       size += 2 * kDefaultValgrindRedZoneBytes;
     39     }
     40   } else {
     41     DCHECK_EQ(RUNNING_ON_VALGRIND, 0U);
     42   }
     43   size_t size_by_size = rosalloc_->UsableSize(size);
     44   if (kIsDebugBuild) {
     45     // On valgrind, the red zone has an impact...
     46     const uint8_t* obj_ptr = reinterpret_cast<const uint8_t*>(obj);
     47     size_t size_by_ptr = rosalloc_->UsableSize(
     48         obj_ptr - (running_on_valgrind ? kDefaultValgrindRedZoneBytes : 0));
     49     if (size_by_size != size_by_ptr) {
     50       LOG(INFO) << "Found a bad sized obj of size " << size
     51                 << " at " << std::hex << reinterpret_cast<intptr_t>(obj_ptr) << std::dec
     52                 << " size_by_size=" << size_by_size << " size_by_ptr=" << size_by_ptr;
     53     }
     54     DCHECK_EQ(size_by_size, size_by_ptr);
     55   }
     56   if (usable_size != nullptr) {
     57     *usable_size = size_by_size;
     58   }
     59   return size_by_size;
     60 }
     61 
     62 template<bool kThreadSafe>
     63 inline mirror::Object* RosAllocSpace::AllocCommon(Thread* self, size_t num_bytes,
     64                                                   size_t* bytes_allocated, size_t* usable_size,
     65                                                   size_t* bytes_tl_bulk_allocated) {
     66   size_t rosalloc_bytes_allocated = 0;
     67   size_t rosalloc_usable_size = 0;
     68   size_t rosalloc_bytes_tl_bulk_allocated = 0;
     69   if (!kThreadSafe) {
     70     Locks::mutator_lock_->AssertExclusiveHeld(self);
     71   }
     72   mirror::Object* result = reinterpret_cast<mirror::Object*>(
     73       rosalloc_->Alloc<kThreadSafe>(self, num_bytes, &rosalloc_bytes_allocated,
     74                                     &rosalloc_usable_size,
     75                                     &rosalloc_bytes_tl_bulk_allocated));
     76   if (LIKELY(result != nullptr)) {
     77     if (kDebugSpaces) {
     78       CHECK(Contains(result)) << "Allocation (" << reinterpret_cast<void*>(result)
     79             << ") not in bounds of allocation space " << *this;
     80     }
     81     DCHECK(bytes_allocated != nullptr);
     82     *bytes_allocated = rosalloc_bytes_allocated;
     83     DCHECK_EQ(rosalloc_usable_size, rosalloc_->UsableSize(result));
     84     if (usable_size != nullptr) {
     85       *usable_size = rosalloc_usable_size;
     86     }
     87     DCHECK(bytes_tl_bulk_allocated != nullptr);
     88     *bytes_tl_bulk_allocated = rosalloc_bytes_tl_bulk_allocated;
     89   }
     90   return result;
     91 }
     92 
     93 inline bool RosAllocSpace::CanAllocThreadLocal(Thread* self, size_t num_bytes) {
     94   return rosalloc_->CanAllocFromThreadLocalRun(self, num_bytes);
     95 }
     96 
     97 inline mirror::Object* RosAllocSpace::AllocThreadLocal(Thread* self, size_t num_bytes,
     98                                                        size_t* bytes_allocated) {
     99   DCHECK(bytes_allocated != nullptr);
    100   return reinterpret_cast<mirror::Object*>(
    101       rosalloc_->AllocFromThreadLocalRun(self, num_bytes, bytes_allocated));
    102 }
    103 
    104 inline size_t RosAllocSpace::MaxBytesBulkAllocatedForNonvirtual(size_t num_bytes) {
    105   return rosalloc_->MaxBytesBulkAllocatedFor(num_bytes);
    106 }
    107 
    108 }  // namespace space
    109 }  // namespace gc
    110 }  // namespace art
    111 
    112 #endif  // ART_RUNTIME_GC_SPACE_ROSALLOC_SPACE_INL_H_
    113