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      1 /*
      2  * Copyright (C) 2011 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_DLMALLOC_SPACE_INL_H_
     18 #define ART_RUNTIME_GC_SPACE_DLMALLOC_SPACE_INL_H_
     19 
     20 #include "dlmalloc_space.h"
     21 #include "gc/allocator/dlmalloc.h"
     22 #include "thread.h"
     23 
     24 namespace art {
     25 namespace gc {
     26 namespace space {
     27 
     28 inline mirror::Object* DlMallocSpace::AllocNonvirtual(Thread* self, size_t num_bytes,
     29                                                       size_t* bytes_allocated,
     30                                                       size_t* usable_size) {
     31   mirror::Object* obj;
     32   {
     33     MutexLock mu(self, lock_);
     34     obj = AllocWithoutGrowthLocked(self, num_bytes, bytes_allocated, usable_size);
     35   }
     36   if (LIKELY(obj != NULL)) {
     37     // Zero freshly allocated memory, done while not holding the space's lock.
     38     memset(obj, 0, num_bytes);
     39   }
     40   return obj;
     41 }
     42 
     43 inline size_t DlMallocSpace::AllocationSizeNonvirtual(mirror::Object* obj, size_t* usable_size) {
     44   void* obj_ptr = const_cast<void*>(reinterpret_cast<const void*>(obj));
     45   size_t size = mspace_usable_size(obj_ptr);
     46   if (usable_size != nullptr) {
     47     *usable_size = size;
     48   }
     49   return size + kChunkOverhead;
     50 }
     51 
     52 inline mirror::Object* DlMallocSpace::AllocWithoutGrowthLocked(Thread* /*self*/, size_t num_bytes,
     53                                                                size_t* bytes_allocated,
     54                                                                size_t* usable_size) {
     55   mirror::Object* result = reinterpret_cast<mirror::Object*>(mspace_malloc(mspace_, num_bytes));
     56   if (LIKELY(result != NULL)) {
     57     if (kDebugSpaces) {
     58       CHECK(Contains(result)) << "Allocation (" << reinterpret_cast<void*>(result)
     59             << ") not in bounds of allocation space " << *this;
     60     }
     61     size_t allocation_size = AllocationSizeNonvirtual(result, usable_size);
     62     DCHECK(bytes_allocated != NULL);
     63     *bytes_allocated = allocation_size;
     64   }
     65   return result;
     66 }
     67 
     68 }  // namespace space
     69 }  // namespace gc
     70 }  // namespace art
     71 
     72 #endif  // ART_RUNTIME_GC_SPACE_DLMALLOC_SPACE_INL_H_
     73