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Another Linux fix.

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This commit is contained in:
Adam Ierymenko 2020-11-30 15:46:16 -05:00
parent e8c6b4ab16
commit 954f6a77e5
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GPG key ID: C8877CF2D7A5D7F3
2 changed files with 14 additions and 2 deletions
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14
osdep/LinuxEthernetTap.cpp
View file

@ -92,7 +92,8 @@ LinuxEthernetTap::LinuxEthernetTap(
_homePath(homePath), _homePath(homePath),
_mtu(mtu), _mtu(mtu),
_fd(0), _fd(0),
_enabled(true) _enabled(true),
_run(true)
{ {
static std::mutex s_tapCreateLock; static std::mutex s_tapCreateLock;
char procpath[128],nwids[32]; char procpath[128],nwids[32];
@ -184,6 +185,7 @@ LinuxEthernetTap::LinuxEthernetTap(
(void)::pipe(_shutdownSignalPipe); (void)::pipe(_shutdownSignalPipe);
_thread_init_l.lock();
for(unsigned int t=0;t<2;++t) { for(unsigned int t=0;t<2;++t) {
_tapReaderThread[t] = std::thread([this, t]{ _tapReaderThread[t] = std::thread([this, t]{
fd_set readfds,nullfds; fd_set readfds,nullfds;
@ -236,10 +238,16 @@ LinuxEthernetTap::LinuxEthernetTap(
fcntl(_fd,F_SETFL,O_NONBLOCK); fcntl(_fd,F_SETFL,O_NONBLOCK);
::close(sock); ::close(sock);
_thread.init_l.unlock();
} else { } else {
usleep(1500000); _thread_init_l.lock();
_thread_init_l.unlock();
} }
if (!_run)
return;
FD_ZERO(&readfds); FD_ZERO(&readfds);
FD_ZERO(&nullfds); FD_ZERO(&nullfds);
nfds = (int)std::max(_shutdownSignalPipe[0],_fd) + 1; nfds = (int)std::max(_shutdownSignalPipe[0],_fd) + 1;
@ -324,6 +332,8 @@ LinuxEthernetTap::LinuxEthernetTap(
LinuxEthernetTap::~LinuxEthernetTap() LinuxEthernetTap::~LinuxEthernetTap()
{ {
_run = false;
(void)::write(_shutdownSignalPipe[1],"\0",1); // causes reader thread(s) to exit (void)::write(_shutdownSignalPipe[1],"\0",1); // causes reader thread(s) to exit
_tapq.post(std::pair<void *,int>(nullptr,0)); // causes processor thread to exit _tapq.post(std::pair<void *,int>(nullptr,0)); // causes processor thread to exit

2
osdep/LinuxEthernetTap.hpp
View file

@ -70,9 +70,11 @@ private:
int _fd; int _fd;
int _shutdownSignalPipe[2]; int _shutdownSignalPipe[2];
std::atomic_bool _enabled; std::atomic_bool _enabled;
std::atomic_bool _run;
std::thread _tapReaderThread[2]; std::thread _tapReaderThread[2];
std::thread _tapProcessorThread; std::thread _tapProcessorThread;
std::mutex _buffers_l; std::mutex _buffers_l;
std::mutex _thread_init_l;
std::vector<void *> _buffers; std::vector<void *> _buffers;
BlockingQueue< std::pair<void *,int> > _tapq; BlockingQueue< std::pair<void *,int> > _tapq;
}; };