14125261754

Committed 28 Mar 2025 08:49AM UTC coverage: 63.407% (-0.02%) from 63.423%

Build # 14125261754

Build Type

push

github

Committed by

web-flow

Commit Message

Merge pull request #15362 from rgacogne/ddist-do-not-register-xsk-config-check-or-client

dnsdist: Do not register Xsk sockets on configuration check or client mode

Run Details

41557 of 100218 branches covered (41.47%)

Branch coverage included in aggregate %.

6 of 7 new or added lines in 2 files covered. (85.71%)

41 existing lines in 10 files now uncovered.

128357 of 167755 relevant lines covered (76.51%)

3743391.9 hits per line

Source File
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83.66

/pdns/pollmplexer.cc

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mplexer.hh"
#include "sstuff.hh"
#include <iostream>
#include <poll.h>
#include <unordered_map>
#include "misc.hh"
#include "namespaces.hh"

FDMultiplexer* FDMultiplexer::getMultiplexerSilent(unsigned int maxEventsHint)
{
  FDMultiplexer* ret = nullptr;
  for (const auto& i : FDMultiplexer::getMultiplexerMap()) {
    try {
      ret = i.second(std::min(maxEventsHint, FDMultiplexer::s_maxevents));
      return ret;
    }
    catch (const FDMultiplexerException& fe) {
    }
    catch (...) {
    }
  }
  return ret;
}

class PollFDMultiplexer : public FDMultiplexer
{
public:
  PollFDMultiplexer(unsigned int /* maxEventsHint */)
  {}

  int run(struct timeval* tv, int timeout = 500) override;
  void getAvailableFDs(std::vector<int>& fds, int timeout) override;

  void addFD(int fd, FDMultiplexer::EventKind) override;
  void removeFD(int fd, FDMultiplexer::EventKind) override;

  string getName() const override
  {
    return "poll";
  }

private:
  std::unordered_map<int, struct pollfd> d_pollfds;
  vector<struct pollfd> preparePollFD() const;
};

static FDMultiplexer* make(unsigned int maxEventsHint)
{
  return new PollFDMultiplexer(maxEventsHint);
}

static struct RegisterOurselves
{
  RegisterOurselves()
  {
    FDMultiplexer::getMultiplexerMap().emplace(2, &make);
  }
} doIt;

static int convertEventKind(FDMultiplexer::EventKind kind)
{
  switch (kind) {
  case FDMultiplexer::EventKind::Read:
    return POLLIN;
  case FDMultiplexer::EventKind::Write:
    return POLLOUT;
  case FDMultiplexer::EventKind::Both:
    return POLLIN | POLLOUT;
  }
  throw std::runtime_error("Unhandled event kind in the ports multiplexer");
}

void PollFDMultiplexer::addFD(int fd, FDMultiplexer::EventKind kind)
{
  if (d_pollfds.count(fd) == 0) {
    auto& pollfd = d_pollfds[fd];
    pollfd.fd = fd;
    pollfd.events = 0;
  }
  auto& pollfd = d_pollfds.at(fd);
  pollfd.events |= convertEventKind(kind);
}

void PollFDMultiplexer::removeFD(int fd, FDMultiplexer::EventKind)
{
  d_pollfds.erase(fd);
}

vector<struct pollfd> PollFDMultiplexer::preparePollFD() const
{
  std::vector<struct pollfd> result;
  result.reserve(d_pollfds.size());
  for (const auto& entry : d_pollfds) {
    result.push_back(entry.second);
  }

  return result;
}

void PollFDMultiplexer::getAvailableFDs(std::vector<int>& fds, int timeout)
{
  auto pollfds = preparePollFD();
  if (pollfds.empty()) {
    return;
  }

  int ret = poll(&pollfds[0], pollfds.size(), timeout);

  if (ret < 0 && errno != EINTR) {
    throw FDMultiplexerException("poll returned error: " + stringerror());
  }

  for (const auto& pollfd : pollfds) {
    if (pollfd.revents & POLLIN || pollfd.revents & POLLOUT || pollfd.revents & POLLERR || pollfd.revents & POLLHUP) {
      fds.push_back(pollfd.fd);
    }
  }
}

int PollFDMultiplexer::run(struct timeval* now, int timeout)
{
  InRun guard(d_inrun);

  auto pollfds = preparePollFD();
  if (pollfds.empty()) {
    gettimeofday(now, nullptr); // MANDATORY!
    return 0;
  }

  int ret = poll(&pollfds[0], pollfds.size(), timeout);
  gettimeofday(now, nullptr); // MANDATORY!

  if (ret < 0 && errno != EINTR) {
    throw FDMultiplexerException("poll returned error: " + stringerror());
  }

  int count = 0;
  for (const auto& pollfd : pollfds) {
    if (pollfd.revents & POLLIN || pollfd.revents & POLLERR || pollfd.revents & POLLHUP) {
      const auto& iter = d_readCallbacks.find(pollfd.fd);
      if (iter != d_readCallbacks.end()) {
        iter->d_callback(iter->d_fd, iter->d_parameter);
        count++;
      }
    }

    if (pollfd.revents & POLLOUT || pollfd.revents & POLLERR) {
      const auto& iter = d_writeCallbacks.find(pollfd.fd);
      if (iter != d_writeCallbacks.end()) {
        iter->d_callback(iter->d_fd, iter->d_parameter);
        count++;
      }
    }
  }

  return count;
}

#if 0

void acceptData(int fd, boost::any& parameter)
{
  cout<<"Have data on fd "<<fd<<endl;
  Socket* sock=boost::any_cast<Socket*>(parameter);
  string packet;
  IPEndpoint rem;
  sock->recvFrom(packet, rem);
  cout<<"Received "<<packet.size()<<" bytes!\n";
}


int main()
{
  Socket s(AF_INET, SOCK_DGRAM);

  IPEndpoint loc("0.0.0.0", 2000);
  s.bind(loc);

  PollFDMultiplexer sfm;

  sfm.addReadFD(s.getHandle(), &acceptData, &s);

  for(int n=0; n < 100 ; ++n) {
    sfm.run();
  }
  sfm.removeReadFD(s.getHandle());
  sfm.removeReadFD(s.getHandle());
}
#endif

1	#ifdef HAVE_CONFIG_H
2	#include "config.h"
3	#endif
4	#include "mplexer.hh"
5	#include "sstuff.hh"
6	#include <iostream>
7	#include <poll.h>
8	#include <unordered_map>
9	#include "misc.hh"
10	#include "namespaces.hh"
11
12	FDMultiplexer* FDMultiplexer::getMultiplexerSilent(unsigned int maxEventsHint)
13	{	5,225✔
14	FDMultiplexer* ret = nullptr;	5,225✔
15	for (const auto& i : FDMultiplexer::getMultiplexerMap()) {	5,230!
16	try {	5,230✔
17	ret = i.second(std::min(maxEventsHint, FDMultiplexer::s_maxevents));	5,230✔
18	return ret;	5,230✔
19	}	5,230✔
20	catch (const FDMultiplexerException& fe) {	5,230✔
21	}	5✔
22	catch (...) {	5,230✔
23	}	×
24	}	5,230✔
UNCOV 25	return ret;	×
26	}	5,225✔
27
28	class PollFDMultiplexer : public FDMultiplexer
29	{
30	public:
31	PollFDMultiplexer(unsigned int /* maxEventsHint */)
32	{}	15✔
33
34	int run(struct timeval* tv, int timeout = 500) override;
35	void getAvailableFDs(std::vector<int>& fds, int timeout) override;
36
37	void addFD(int fd, FDMultiplexer::EventKind) override;
38	void removeFD(int fd, FDMultiplexer::EventKind) override;
39
40	string getName() const override
41	{	×
42	return "poll";	×
43	}	×
44
45	private:
46	std::unordered_map<int, struct pollfd> d_pollfds;
47	vector<struct pollfd> preparePollFD() const;
48	};
49
50	static FDMultiplexer* make(unsigned int maxEventsHint)
51	{	15✔
52	return new PollFDMultiplexer(maxEventsHint);	15✔
53	}	15✔
54
55	static struct RegisterOurselves
56	{
57	RegisterOurselves()
58	{	853✔
59	FDMultiplexer::getMultiplexerMap().emplace(2, &make);	853✔
60	}	853✔
61	} doIt;
62
63	static int convertEventKind(FDMultiplexer::EventKind kind)
64	{	35✔
65	switch (kind) {	35!
66	case FDMultiplexer::EventKind::Read:	10✔
67	return POLLIN;	10✔
68	case FDMultiplexer::EventKind::Write:	20✔
69	return POLLOUT;	20✔
70	case FDMultiplexer::EventKind::Both:	5✔
71	return POLLIN \| POLLOUT;	5✔
72	}	35✔
73	throw std::runtime_error("Unhandled event kind in the ports multiplexer");	×
74	}	35✔
75
76	void PollFDMultiplexer::addFD(int fd, FDMultiplexer::EventKind kind)
77	{	35✔
78	if (d_pollfds.count(fd) == 0) {	35✔
79	auto& pollfd = d_pollfds[fd];	30✔
80	pollfd.fd = fd;	30✔
81	pollfd.events = 0;	30✔
82	}	30✔
83	auto& pollfd = d_pollfds.at(fd);	35✔
84	pollfd.events \|= convertEventKind(kind);	35✔
85	}	35✔
86
87	void PollFDMultiplexer::removeFD(int fd, FDMultiplexer::EventKind)
88	{	30✔
89	d_pollfds.erase(fd);	30✔
90	}	30✔
91
92	vector<struct pollfd> PollFDMultiplexer::preparePollFD() const
93	{	85✔
94	std::vector<struct pollfd> result;	85✔
95	result.reserve(d_pollfds.size());	85✔
96	for (const auto& entry : d_pollfds) {	85✔
97	result.push_back(entry.second);	75✔
98	}	75✔
99
100	return result;	85✔
101	}	85✔
102
103	void PollFDMultiplexer::getAvailableFDs(std::vector<int>& fds, int timeout)
104	{	45✔
105	auto pollfds = preparePollFD();	45✔
106	if (pollfds.empty()) {	45✔
107	return;	10✔
108	}	10✔
109
110	int ret = poll(&pollfds[0], pollfds.size(), timeout);	35✔
111
112	if (ret < 0 && errno != EINTR) {	35!
113	throw FDMultiplexerException("poll returned error: " + stringerror());	×
114	}	×
115
116	for (const auto& pollfd : pollfds) {	40✔
117	if (pollfd.revents & POLLIN \|\| pollfd.revents & POLLOUT \|\| pollfd.revents & POLLERR \|\| pollfd.revents & POLLHUP) {	40!
118	fds.push_back(pollfd.fd);	35✔
119	}	35✔
120	}	40✔
121	}	35✔
122
123	int PollFDMultiplexer::run(struct timeval* now, int timeout)
124	{	40✔
125	InRun guard(d_inrun);	40✔
126
127	auto pollfds = preparePollFD();	40✔
128	if (pollfds.empty()) {	40✔
129	gettimeofday(now, nullptr); // MANDATORY!	10✔
130	return 0;	10✔
131	}	10✔
132
133	int ret = poll(&pollfds[0], pollfds.size(), timeout);	30✔
134	gettimeofday(now, nullptr); // MANDATORY!	30✔
135
136	if (ret < 0 && errno != EINTR) {	30!
137	throw FDMultiplexerException("poll returned error: " + stringerror());	×
138	}	×
139
140	int count = 0;	30✔
141	for (const auto& pollfd : pollfds) {	35✔
142	if (pollfd.revents & POLLIN \|\| pollfd.revents & POLLERR \|\| pollfd.revents & POLLHUP) {	35!
143	const auto& iter = d_readCallbacks.find(pollfd.fd);	15✔
144	if (iter != d_readCallbacks.end()) {	15!
145	iter->d_callback(iter->d_fd, iter->d_parameter);	15✔
146	count++;	15✔
147	}	15✔
148	}	15✔
149
150	if (pollfd.revents & POLLOUT \|\| pollfd.revents & POLLERR) {	35!
151	const auto& iter = d_writeCallbacks.find(pollfd.fd);	20✔
152	if (iter != d_writeCallbacks.end()) {	20!
153	iter->d_callback(iter->d_fd, iter->d_parameter);	20✔
154	count++;	20✔
155	}	20✔
156	}	20✔
157	}	35✔
158
159	return count;	30✔
160	}	30✔
161
162	#if 0
163
164	void acceptData(int fd, boost::any& parameter)
165	{
166	cout<<"Have data on fd "<<fd<<endl;
167	Socket* sock=boost::any_cast<Socket*>(parameter);
168	string packet;
169	IPEndpoint rem;
170	sock->recvFrom(packet, rem);
171	cout<<"Received "<<packet.size()<<" bytes!\n";
172	}
173
174
175	int main()
176	{
177	Socket s(AF_INET, SOCK_DGRAM);
178
179	IPEndpoint loc("0.0.0.0", 2000);
180	s.bind(loc);
181
182	PollFDMultiplexer sfm;
183
184	sfm.addReadFD(s.getHandle(), &acceptData, &s);
185
186	for(int n=0; n < 100 ; ++n) {
187	sfm.run();
188	}
189	sfm.removeReadFD(s.getHandle());
190	sfm.removeReadFD(s.getHandle());
191	}
192	#endif

PowerDNS / pdns / 14125261754

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