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zmq: implement alignment

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This commit is contained in:
Alexey Rybalchenko
2020-12-15 10:03:17 +01:00
parent 02a3980343
commit 6815c9c172
7 changed files with 168 additions and 12 deletions
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2
fairmq/FairMQMessage.h
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@@ -39,7 +39,9 @@ class FairMQMessage
FairMQMessage(FairMQTransportFactory* factory) : fTransport(factory) {}
virtual void Rebuild() = 0;
virtual void Rebuild(fair::mq::Alignment alignment) = 0;
virtual void Rebuild(const size_t size) = 0;
virtual void Rebuild(const size_t size, fair::mq::Alignment alignment) = 0;
virtual void Rebuild(void* data, const size_t size, fairmq_free_fn* ffn, void* hint = nullptr) = 0;
virtual void* GetData() const = 0;

12
fairmq/ofi/Message.cxx
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@@ -110,6 +110,12 @@ auto Message::Rebuild() -> void
fHint = nullptr;
}
auto Message::Rebuild(Alignment /* alignment */) -> void
{
// TODO: implement alignment
Rebuild();
}
auto Message::Rebuild(const size_t size) -> void
{
if (fFreeFunction) {
@@ -131,6 +137,12 @@ auto Message::Rebuild(const size_t size) -> void
fHint = nullptr;
}
auto Message::Rebuild(const size_t size, Alignment /* alignment */) -> void
{
// TODO: implement alignment
Rebuild(size);
}
auto Message::Rebuild(void* /*data*/, const size_t size, fairmq_free_fn* ffn, void* hint) -> void
{
if (fFreeFunction) {

2
fairmq/ofi/Message.h
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@@ -52,7 +52,9 @@ class Message final : public fair::mq::Message
Message operator=(const Message&) = delete;
auto Rebuild() -> void override;
auto Rebuild(Alignment alignment) -> void override;
auto Rebuild(const size_t size) -> void override;
auto Rebuild(const size_t size, Alignment alignment) -> void override;
auto Rebuild(void* data, const size_t size, fairmq_free_fn* ffn, void* hint = nullptr) -> void override;
auto GetData() const -> void* override;

25
fairmq/shmem/Message.h
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@@ -50,11 +50,12 @@ class Message final : public fair::mq::Message
fManager.IncrementMsgCounter();
}
Message(Manager& manager, Alignment /* alignment */, FairMQTransportFactory* factory = nullptr)
Message(Manager& manager, Alignment alignment, FairMQTransportFactory* factory = nullptr)
: fair::mq::Message(factory)
, fManager(manager)
, fQueued(false)
, fMeta{0, 0, 0, fManager.GetSegmentId(), -1}
, fAlignment(alignment.alignment)
, fRegionPtr(nullptr)
, fLocalPtr(nullptr)
{
@@ -78,10 +79,11 @@ class Message final : public fair::mq::Message
, fManager(manager)
, fQueued(false)
, fMeta{0, 0, 0, fManager.GetSegmentId(), -1}
, fAlignment(alignment.alignment)
, fRegionPtr(nullptr)
, fLocalPtr(nullptr)
{
InitializeChunk(size, static_cast<size_t>(alignment));
InitializeChunk(size, fAlignment);
fManager.IncrementMsgCounter();
}
@@ -142,6 +144,13 @@ class Message final : public fair::mq::Message
fQueued = false;
}
void Rebuild(Alignment alignment) override
{
CloseMessage();
fQueued = false;
fAlignment = alignment.alignment;
}
void Rebuild(const size_t size) override
{
CloseMessage();
@@ -149,6 +158,14 @@ class Message final : public fair::mq::Message
InitializeChunk(size);
}
void Rebuild(const size_t size, Alignment alignment) override
{
CloseMessage();
fQueued = false;
fAlignment = alignment.alignment;
InitializeChunk(size, fAlignment);
}
void Rebuild(void* data, const size_t size, fairmq_free_fn* ffn, void* hint = nullptr) override
{
CloseMessage();
@@ -242,6 +259,7 @@ class Message final : public fair::mq::Message
Manager& fManager;
bool fQueued;
MetaHeader fMeta;
size_t fAlignment; // TODO: put this to debug mode
mutable Region* fRegionPtr;
mutable char* fLocalPtr;
@@ -276,8 +294,9 @@ class Message final : public fair::mq::Message
}
fLocalPtr = nullptr;
fMeta.fSize = 0;
fAlignment = 0;
fManager.DecrementMsgCounter();
fManager.DecrementMsgCounter(); // TODO: put this to debug mode
}
};

85
fairmq/zeromq/Message.h
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@@ -18,8 +18,10 @@
#include <zmq.h>
#include <cstddef>
#include <cstdlib> // malloc
#include <cstring>
#include <memory>
#include <new> // bad_alloc
#include <string>
namespace fair
@@ -38,14 +40,17 @@ class Message final : public fair::mq::Message
public:
Message(FairMQTransportFactory* factory = nullptr)
: fair::mq::Message(factory)
, fAlignment(0)
, fMsg(tools::make_unique<zmq_msg_t>())
{
if (zmq_msg_init(fMsg.get()) != 0) {
LOG(error) << "failed initializing message, reason: " << zmq_strerror(errno);
}
}
Message(Alignment /* alignment */, FairMQTransportFactory* factory = nullptr)
Message(Alignment alignment, FairMQTransportFactory* factory = nullptr)
: fair::mq::Message(factory)
, fAlignment(alignment.alignment)
, fMsg(tools::make_unique<zmq_msg_t>())
{
if (zmq_msg_init(fMsg.get()) != 0) {
@@ -55,6 +60,7 @@ class Message final : public fair::mq::Message
Message(const size_t size, FairMQTransportFactory* factory = nullptr)
: fair::mq::Message(factory)
, fAlignment(0)
, fMsg(tools::make_unique<zmq_msg_t>())
{
if (zmq_msg_init_size(fMsg.get(), size) != 0) {
@@ -62,17 +68,40 @@ class Message final : public fair::mq::Message
}
}
Message(const size_t size, Alignment /* alignment */, FairMQTransportFactory* factory = nullptr)
static std::pair<void*, void*> AllocateAligned(size_t size, size_t alignment)
{
char* fullBufferPtr = static_cast<char*>(malloc(size + alignment));
if (!fullBufferPtr) {
LOG(error) << "failed to allocate buffer with provided size (" << size << ") and alignment (" << alignment << ").";
throw std::bad_alloc();
}
size_t offset = alignment - (reinterpret_cast<uintptr_t>(fullBufferPtr) % alignment);
char* alignedPartPtr = fullBufferPtr + offset;
return {static_cast<void*>(fullBufferPtr), static_cast<void*>(alignedPartPtr)};
}
Message(const size_t size, Alignment alignment, FairMQTransportFactory* factory = nullptr)
: fair::mq::Message(factory)
, fAlignment(alignment.alignment)
, fMsg(tools::make_unique<zmq_msg_t>())
{
if (zmq_msg_init_size(fMsg.get(), size) != 0) {
LOG(error) << "failed initializing message with size, reason: " << zmq_strerror(errno);
if (fAlignment != 0) {
auto ptrs = AllocateAligned(size, fAlignment);
if (zmq_msg_init_data(fMsg.get(), ptrs.second, size, [](void* /* data */, void* hint) { free(hint); }, ptrs.first) != 0) {
LOG(error) << "failed initializing message with size, reason: " << zmq_strerror(errno);
}
} else {
if (zmq_msg_init_size(fMsg.get(), size) != 0) {
LOG(error) << "failed initializing message with size, reason: " << zmq_strerror(errno);
}
}
}
Message(void* data, const size_t size, fairmq_free_fn* ffn, void* hint = nullptr, FairMQTransportFactory* factory = nullptr)
: fair::mq::Message(factory)
, fAlignment(0)
, fMsg(tools::make_unique<zmq_msg_t>())
{
if (zmq_msg_init_data(fMsg.get(), data, size, ffn, hint) != 0) {
@@ -82,6 +111,7 @@ class Message final : public fair::mq::Message
Message(UnmanagedRegionPtr& region, void* data, const size_t size, void* hint = 0, FairMQTransportFactory* factory = nullptr)
: fair::mq::Message(factory)
, fAlignment(0)
, fMsg(tools::make_unique<zmq_msg_t>())
{
// FIXME: make this zero-copy:
@@ -116,6 +146,16 @@ class Message final : public fair::mq::Message
}
}
void Rebuild(Alignment alignment) override
{
CloseMessage();
fAlignment = alignment.alignment;
fMsg = tools::make_unique<zmq_msg_t>();
if (zmq_msg_init(fMsg.get()) != 0) {
LOG(error) << "failed initializing message, reason: " << zmq_strerror(errno);
}
}
void Rebuild(const size_t size) override
{
CloseMessage();
@@ -125,6 +165,24 @@ class Message final : public fair::mq::Message
}
}
void Rebuild(const size_t size, Alignment alignment) override
{
CloseMessage();
fAlignment = alignment.alignment;
fMsg = tools::make_unique<zmq_msg_t>();
if (fAlignment != 0) {
auto ptrs = AllocateAligned(size, fAlignment);
if (zmq_msg_init_data(fMsg.get(), ptrs.second, size, [](void* /* data */, void* hint) { free(hint); }, ptrs.first) != 0) {
LOG(error) << "failed initializing message with size, reason: " << zmq_strerror(errno);
}
} else {
if (zmq_msg_init_size(fMsg.get(), size) != 0) {
LOG(error) << "failed initializing message with size, reason: " << zmq_strerror(errno);
}
}
}
void Rebuild(void* data, const size_t size, fairmq_free_fn* ffn, void* hint = nullptr) override
{
CloseMessage();
@@ -174,6 +232,23 @@ class Message final : public fair::mq::Message
}
}
void Realign()
{
// if alignment is provided
if (fAlignment != 0) {
void* data = GetData();
size_t size = GetSize();
// if buffer is valid && not already aligned with the given alignment
if (data != nullptr && reinterpret_cast<uintptr_t>(GetData()) % fAlignment) {
// create new aligned buffer
auto ptrs = AllocateAligned(size, fAlignment);
std::memcpy(ptrs.second, zmq_msg_data(fMsg.get()), size);
// rebuild the message with the new buffer
Rebuild(ptrs.second, size, [](void* /* buf */, void* hint) { free(hint); }, ptrs.first);
}
}
}
Transport GetType() const override { return Transport::ZMQ; }
void Copy(const fair::mq::Message& msg) override
@@ -189,6 +264,7 @@ class Message final : public fair::mq::Message
~Message() override { CloseMessage(); }
private:
size_t fAlignment;
std::unique_ptr<zmq_msg_t> fMsg;
zmq_msg_t* GetMessage() const { return fMsg.get(); }
@@ -200,6 +276,7 @@ class Message final : public fair::mq::Message
}
// reset the message object to allow reuse in Rebuild
fMsg.reset(nullptr);
fAlignment = 0;
}
};

2
fairmq/zeromq/Socket.h
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@@ -173,6 +173,7 @@ class Socket final : public fair::mq::Socket
while (true) {
int nbytes = zmq_msg_recv(static_cast<Message*>(msg.get())->GetMessage(), fSocket, flags);
if (nbytes >= 0) {
static_cast<Message*>(msg.get())->Realign();
int64_t actualBytes = zmq_msg_size(static_cast<Message*>(msg.get())->GetMessage());
fBytesRx += actualBytes;
++fMessagesRx;
@@ -261,6 +262,7 @@ class Socket final : public fair::mq::Socket
int nbytes = zmq_msg_recv(static_cast<Message*>(part.get())->GetMessage(), fSocket, flags);
if (nbytes >= 0) {
static_cast<Message*>(part.get())->Realign();
msgVec.push_back(move(part));
totalSize += nbytes;
} else if (zmq_errno() == EAGAIN || zmq_errno() == EINTR) {