#include <fstream>
#include <unistd.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <testsuite_hooks.h>
class UnderBuf : public std::filebuf
{
public:
int_type
pub_underflow()
{ return underflow(); }
std::streamsize
pub_showmanyc()
{ return showmanyc(); }
};
void test16()
{
using namespace std;
using namespace __gnu_test;
bool test __attribute__((unused)) = true;
const char* name = "tmp_fifo1";
signal(SIGPIPE, SIG_IGN);
unlink(name);
if (0 != mkfifo(name, S_IRWXU))
{
VERIFY( false );
}
semaphore s1;
int fval = fork();
if (fval == -1)
{
unlink(name);
VERIFY( false );
}
else if (fval == 0)
{
filebuf fbout;
fbout.open(name, ios_base::in|ios_base::out);
VERIFY ( fbout.is_open() );
fbout.sputn("0123456789", 10);
fbout.pubsync();
s1.wait ();
fbout.close();
exit(0);
}
UnderBuf fb;
fb.open(name, ios_base::in);
fb.sgetc();
streamsize n = fb.pub_showmanyc();
while (n > 0)
{
--n;
UnderBuf::int_type c = fb.pub_underflow();
VERIFY( c != UnderBuf::traits_type::eof() );
fb.sbumpc();
}
fb.close();
s1.signal ();
}
int main()
{
test16();
return 0;
}