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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                                                       size_t* bytes_tl_bulk_allocated) {
     32   mirror::Object* obj;
     33   {
     34     MutexLock mu(self, lock_);
     35     obj = AllocWithoutGrowthLocked(self, num_bytes, bytes_allocated, usable_size,
     36                                    bytes_tl_bulk_allocated);
     37   }
     38   if (LIKELY(obj != nullptr)) {
     39     // Zero freshly allocated memory, done while not holding the space's lock.
     40     memset(obj, 0, num_bytes);
     41   }
     42   return obj;
     43 }
     44 
     45 inline size_t DlMallocSpace::AllocationSizeNonvirtual(mirror::Object* obj, size_t* usable_size) {
     46   void* obj_ptr = const_cast<void*>(reinterpret_cast<const void*>(obj));
     47   size_t size = mspace_usable_size(obj_ptr);
     48   if (usable_size != nullptr) {
     49     *usable_size = size;
     50   }
     51   return size + kChunkOverhead;
     52 }
     53 
     54 inline mirror::Object* DlMallocSpace::AllocWithoutGrowthLocked(
     55     Thread* /*self*/, size_t num_bytes,
     56     size_t* bytes_allocated,
     57     size_t* usable_size,
     58     size_t* bytes_tl_bulk_allocated) {
     59   mirror::Object* result = reinterpret_cast<mirror::Object*>(mspace_malloc(mspace_, num_bytes));
     60   if (LIKELY(result != nullptr)) {
     61     if (kDebugSpaces) {
     62       CHECK(Contains(result)) << "Allocation (" << reinterpret_cast<void*>(result)
     63             << ") not in bounds of allocation space " << *this;
     64     }
     65     size_t allocation_size = AllocationSizeNonvirtual(result, usable_size);
     66     DCHECK(bytes_allocated != nullptr);
     67     *bytes_allocated = allocation_size;
     68     *bytes_tl_bulk_allocated = allocation_size;
     69   }
     70   return result;
     71 }
     72 
     73 }  // namespace space
     74 }  // namespace gc
     75 }  // namespace art
     76 
     77 #endif  // ART_RUNTIME_GC_SPACE_DLMALLOC_SPACE_INL_H_
     78