| /* ------------------------------------------------------------------ |
| * Copyright (C) 2008 PacketVideo |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either |
| * express or implied. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * ------------------------------------------------------------------- |
| */ |
| /** |
| * @file pvmf_pool_buffer_allocator.h |
| * @brief This file defines the PV Multimedia Framework (PVMF) media message |
| * header class which is used to hold the basic information such as timestamp, |
| * sequence number, etc for every media message. |
| * |
| */ |
| #include "pvlogger.h" |
| #include "pvmf_pool_buffer_allocator.h" |
| #include "oscl_mem.h" |
| #include "oscl_time.h" |
| |
| OSCL_EXPORT_REF PVMFBufferPoolAllocator::PVMFBufferPoolAllocator() : iFragSize(0), iDestroyPool(false) |
| { |
| iLogger = PVLogger::GetLoggerObject("pvmf.bufferpoolallocator"); |
| iAllocNum = 0; |
| iFailFrequency = 0; |
| } |
| |
| OSCL_EXPORT_REF PVMFBufferPoolAllocator::~PVMFBufferPoolAllocator() |
| { |
| iDestroyPool = true; |
| iAvailFragments.clear(); |
| } |
| |
| OSCL_EXPORT_REF void PVMFBufferPoolAllocator::size(uint16 num_frags, uint16 frag_size) |
| { |
| PVLOGGER_LOGMSG(PVLOGMSG_INST_LLDBG, iLogger, PVLOGMSG_STACK_TRACE, (0, "PVMFBufferPoolAllocator::size num_frags(%d), frag_size(%d)", num_frags, frag_size)); |
| iFragSize = frag_size; |
| iAvailFragments.reserve(num_frags); |
| |
| for (uint16 frag_num = 0; frag_num < num_frags; frag_num++) |
| { |
| unsigned aligned_refcnt_size = oscl_mem_aligned_size(sizeof(OsclRefCounterDA)); |
| uint8* buf = (uint8*)OSCL_MALLOC(aligned_refcnt_size + frag_size); |
| |
| // check for out-of-memory |
| if (!buf) break; |
| |
| // ref counter will delete itself when refcount goes to 0 |
| OsclRefCounterDA* ref_counter = OSCL_PLACEMENT_NEW(buf, OsclRefCounterDA(buf, this)); |
| OsclMemoryFragment m; |
| m.ptr = buf + aligned_refcnt_size; |
| m.len = iFragSize; |
| OsclRefCounterMemFrag frag(m, ref_counter, iFragSize); |
| iAvailFragments.push_back(frag); |
| } |
| } |
| |
| OSCL_EXPORT_REF void PVMFBufferPoolAllocator::clear() |
| { |
| iDestroyPool = true; |
| iAvailFragments.clear(); |
| } |
| |
| OSCL_EXPORT_REF void PVMFBufferPoolAllocator::destruct_and_dealloc(OsclAny* ptr) |
| { |
| if (!iDestroyPool) |
| { |
| // Create another ref counter for the buffer and add it back to the available list |
| OsclRefCounterDA* ref_counter = OSCL_PLACEMENT_NEW(ptr, OsclRefCounterDA(ptr, this)); |
| unsigned aligned_refcnt_size = oscl_mem_aligned_size(sizeof(OsclRefCounterDA)); |
| OsclMemoryFragment m; |
| m.ptr = (uint8*)ptr + aligned_refcnt_size; |
| m.len = iFragSize; |
| OsclRefCounterMemFrag frag(m, ref_counter, iFragSize); |
| release(frag); |
| } |
| else |
| { |
| OSCL_FREE(ptr); |
| } |
| } |
| |
| OSCL_EXPORT_REF OsclRefCounterMemFrag PVMFBufferPoolAllocator::get() |
| { |
| #if _DEBUG |
| ++iAllocNum; |
| if (iFailFrequency) |
| { |
| TimeValue timenow; |
| int ms = timenow.to_msec(); |
| if (iAllocNum % ((ms & 0xF) + 1) == 0) |
| { |
| // throw exception |
| PVLOGGER_LOGMSG(PVLOGMSG_INST_LLDBG, iLogger, PVLOGMSG_NONFATAL_ERROR, (0, "PVMFBufferPoolAllocator::get - Simulating out of fragment exception !! \n")); |
| OSCL_LEAVE(OSCL_BAD_ALLOC_EXCEPTION_CODE); |
| } |
| } |
| #endif |
| |
| OsclRefCounterMemFrag ret; |
| if (!iAvailFragments.empty()) |
| { |
| ret = iAvailFragments.back(); |
| iAvailFragments.pop_back(); |
| ret.getMemFrag().len = iFragSize; |
| return ret; |
| } |
| PVLOGGER_LOGMSG(PVLOGMSG_INST_LLDBG, iLogger, PVLOGMSG_NONFATAL_ERROR, (0, "PVMFBufferPoolAllocator::get - Out of fragments !! \n")); |
| |
| OSCL_LEAVE(OSCL_BAD_ALLOC_EXCEPTION_CODE); |
| return ret; |
| } |
| |
| OSCL_EXPORT_REF void PVMFBufferPoolAllocator::release(OsclRefCounterMemFrag& frag) |
| { |
| iAvailFragments.push_back(frag); |
| } |
| |
| OSCL_EXPORT_REF void PVMFBufferPoolAllocator::SetFailFrequency(uint16 aFrequency) |
| { |
| iFailFrequency = aFrequency; |
| } |
| |