Mirror/FairMQ
1
0
Fork 0
mirror of https://github.com/FairRootGroup/FairMQ.git synced 2025-10-15 17:41:45 +00:00
Code Issues Packages Projects Releases Wiki Activity

Shmem: refactor, clean includes, make header only

Browse Source
This commit is contained in:
Alexey Rybalchenko
2020-05-16 00:43:26 +02:00
parent 7a67719a3c
commit ccbf0be572
13 changed files with 1542 additions and 1893 deletions
Download Patch File Download Diff File Expand all files Collapse all files

207
fairmq/shmem/Region.h
View File

@@ -19,15 +19,24 @@
#include <FairMQLogger.h>
#include <FairMQUnmanagedRegion.h>
#include <fairmq/tools/CppSTL.h>
#include <fairmq/tools/Strings.h>
#include <boost/filesystem.hpp>
#include <boost/process.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/interprocess/managed_shared_memory.hpp>
#include <boost/interprocess/file_mapping.hpp>
#include <boost/interprocess/ipc/message_queue.hpp>
#include <algorithm> // min
#include <thread>
#include <mutex>
#include <condition_variable>
#include <unordered_map>
#include <cerrno>
#include <chrono>
#include <ios>
namespace fair
{
@@ -36,28 +45,204 @@ namespace mq
namespace shmem
{
class Manager;
struct Region
{
Region(Manager& manager, uint64_t id, uint64_t size, bool remote, RegionCallback callback, RegionBulkCallback bulkCallback, const std::string& path, int flags);
Region(const std::string& shmId, uint64_t id, uint64_t size, bool remote, RegionCallback callback, RegionBulkCallback bulkCallback, const std::string& path, int flags)
: fRemote(remote)
, fStop(false)
, fName("fmq_" + shmId + "_rg_" + std::to_string(id))
, fQueueName("fmq_" + shmId + "_rgq_" + std::to_string(id))
, fShmemObject()
, fFile(nullptr)
, fFileMapping()
, fQueue(nullptr)
, fReceiveAcksWorker()
, fSendAcksWorker()
, fCallback(callback)
, fBulkCallback(bulkCallback)
{
using namespace boost::interprocess;
if (path != "") {
fName = std::string(path + fName);
if (!fRemote) {
// create a file
std::filebuf fbuf;
if (fbuf.open(fName, std::ios_base::in | std::ios_base::out | std::ios_base::trunc | std::ios_base::binary)) {
// set the size
fbuf.pubseekoff(size - 1, std::ios_base::beg);
fbuf.sputc(0);
}
}
fFile = fopen(fName.c_str(), "r+");
if (!fFile) {
LOG(error) << "Failed to initialize file: " << fName;
LOG(error) << "errno: " << errno << ": " << strerror(errno);
throw std::runtime_error(tools::ToString("Failed to initialize file for shared memory region: ", strerror(errno)));
}
fFileMapping = file_mapping(fName.c_str(), read_write);
LOG(debug) << "shmem: initialized file: " << fName;
fRegion = mapped_region(fFileMapping, read_write, 0, size, 0, flags);
} else {
if (fRemote) {
fShmemObject = shared_memory_object(open_only, fName.c_str(), read_write);
} else {
fShmemObject = shared_memory_object(create_only, fName.c_str(), read_write);
fShmemObject.truncate(size);
}
fRegion = mapped_region(fShmemObject, read_write, 0, 0, 0, flags);
}
InitializeQueues();
StartSendingAcks();
LOG(debug) << "shmem: initialized region: " << fName;
}
Region() = delete;
Region(const Region&) = delete;
Region(Region&&) = delete;
void InitializeQueues();
void InitializeQueues()
{
using namespace boost::interprocess;
void StartSendingAcks();
void SendAcks();
void StartReceivingAcks();
void ReceiveAcks();
void ReleaseBlock(const RegionBlock &);
if (fRemote) {
fQueue = tools::make_unique<message_queue>(open_only, fQueueName.c_str());
} else {
fQueue = tools::make_unique<message_queue>(create_only, fQueueName.c_str(), 1024, fAckBunchSize * sizeof(RegionBlock));
}
LOG(debug) << "shmem: initialized region queue: " << fQueueName;
}
~Region();
void StartSendingAcks()
{
fSendAcksWorker = std::thread(&Region::SendAcks, this);
}
void SendAcks()
{
std::unique_ptr<RegionBlock[]> blocks = tools::make_unique<RegionBlock[]>(fAckBunchSize);
while (true) { // we'll try to send all acks before stopping
size_t blocksToSend = 0;
{ // mutex locking block
std::unique_lock<std::mutex> lock(fBlockMtx);
// try to get more blocks without waiting (we can miss a notify from CloseMessage())
if (!fStop && (fBlocksToFree.size() < fAckBunchSize)) {
// cv.wait() timeout: send whatever blocks we have
fBlockSendCV.wait_for(lock, std::chrono::milliseconds(500));
}
blocksToSend = std::min(fBlocksToFree.size(), fAckBunchSize);
copy_n(fBlocksToFree.end() - blocksToSend, blocksToSend, blocks.get());
fBlocksToFree.resize(fBlocksToFree.size() - blocksToSend);
} // unlock the block mutex here while sending over IPC
if (blocksToSend > 0) {
while (!fQueue->try_send(blocks.get(), blocksToSend * sizeof(RegionBlock), 0) && !fStop) {
// receiver slow? yield and try again...
std::this_thread::yield();
}
} else { // blocksToSend == 0
if (fStop) {
break;
}
}
}
LOG(debug) << "send ack worker for " << fName << " leaving.";
}
void StartReceivingAcks()
{
fReceiveAcksWorker = std::thread(&Region::ReceiveAcks, this);
}
void ReceiveAcks()
{
unsigned int priority;
boost::interprocess::message_queue::size_type recvdSize;
std::unique_ptr<RegionBlock[]> blocks = tools::make_unique<RegionBlock[]>(fAckBunchSize);
std::vector<fair::mq::RegionBlock> result;
result.reserve(fAckBunchSize);
while (!fStop) { // end thread condition (should exist until region is destroyed)
auto rcvTill = boost::posix_time::microsec_clock::universal_time() + boost::posix_time::milliseconds(500);
while (fQueue->timed_receive(blocks.get(), fAckBunchSize * sizeof(RegionBlock), recvdSize, priority, rcvTill)) {
// LOG(debug) << "received: " << block.fHandle << " " << block.fSize << " " << block.fMessageId;
const auto numBlocks = recvdSize / sizeof(RegionBlock);
if (fBulkCallback) {
result.clear();
for (size_t i = 0; i < numBlocks; i++) {
result.emplace_back(reinterpret_cast<char*>(fRegion.get_address()) + blocks[i].fHandle, blocks[i].fSize, reinterpret_cast<void*>(blocks[i].fHint));
}
fBulkCallback(result);
} else if (fCallback) {
for (size_t i = 0; i < numBlocks; i++) {
fCallback(reinterpret_cast<char*>(fRegion.get_address()) + blocks[i].fHandle, blocks[i].fSize, reinterpret_cast<void*>(blocks[i].fHint));
}
}
}
} // while !fStop
LOG(debug) << "ReceiveAcks() worker for " << fName << " leaving.";
}
void ReleaseBlock(const RegionBlock& block)
{
std::unique_lock<std::mutex> lock(fBlockMtx);
fBlocksToFree.emplace_back(block);
if (fBlocksToFree.size() >= fAckBunchSize) {
lock.unlock(); // reduces contention on fBlockMtx
fBlockSendCV.notify_one();
}
}
~Region()
{
fStop = true;
if (fSendAcksWorker.joinable()) {
fBlockSendCV.notify_one();
fSendAcksWorker.join();
}
if (!fRemote) {
if (fReceiveAcksWorker.joinable()) {
fReceiveAcksWorker.join();
}
if (boost::interprocess::shared_memory_object::remove(fName.c_str())) {
LOG(debug) << "shmem: destroyed region " << fName;
}
if (boost::interprocess::file_mapping::remove(fName.c_str())) {
LOG(debug) << "shmem: destroyed file mapping " << fName;
}
if (fFile) {
fclose(fFile);
}
if (boost::interprocess::message_queue::remove(fQueueName.c_str())) {
LOG(debug) << "shmem: removed region queue " << fQueueName;
}
} else {
// LOG(debug) << "shmem: region '" << fName << "' is remote, no cleanup necessary.";
LOG(debug) << "shmem: region queue '" << fQueueName << "' is remote, no cleanup necessary";
}
}
Manager& fManager;
bool fRemote;
bool fStop;
std::string fName;