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Diffstat (limited to 'qpid/cpp/src/tests/PollerTest.cpp')
-rw-r--r-- | qpid/cpp/src/tests/PollerTest.cpp | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/qpid/cpp/src/tests/PollerTest.cpp b/qpid/cpp/src/tests/PollerTest.cpp new file mode 100644 index 0000000000..fcb1d0dadf --- /dev/null +++ b/qpid/cpp/src/tests/PollerTest.cpp @@ -0,0 +1,164 @@ +/* + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * + */ + +/** + * Use socketpair to test the poller + */ + +#include "qpid/sys/Poller.h" + +#include <string> +#include <iostream> +#include <memory> +#include <exception> + +#include <assert.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <fcntl.h> +#include <unistd.h> +#include <errno.h> + +using namespace std; +using namespace qpid::sys; + +int writeALot(int fd, const string& s) { + int bytesWritten = 0; + do { + errno = 0; + int lastWrite = ::write(fd, s.c_str(), s.size()); + if ( lastWrite >= 0) { + bytesWritten += lastWrite; + } + } while (errno != EAGAIN); + return bytesWritten; +} + +int readALot(int fd) { + int bytesRead = 0; + char buf[1024]; + + do { + errno = 0; + int lastRead = ::read(fd, buf, sizeof(buf)); + if ( lastRead >= 0) { + bytesRead += lastRead; + } + } while (errno != EAGAIN); + return bytesRead; +} + +int main(int argc, char** argv) +{ + try + { + int sv[2]; + int rc = ::socketpair(AF_LOCAL, SOCK_STREAM, 0, sv); + assert(rc >= 0); + + // Set non-blocking + rc = ::fcntl(sv[0], F_SETFL, O_NONBLOCK); + assert(rc >= 0); + + rc = ::fcntl(sv[1], F_SETFL, O_NONBLOCK); + assert(rc >= 0); + + // Make up a large string + string testString = "This is only a test ... 1,2,3,4,5,6,7,8,9,10;"; + for (int i = 0; i < 6; i++) + testString += testString; + + // Read as much as we can from socket 0 + int bytesRead = readALot(sv[0]); + assert(bytesRead == 0); + cout << "Read(0): " << bytesRead << " bytes\n"; + + // Write as much as we can to socket 0 + int bytesWritten = writeALot(sv[0], testString); + cout << "Wrote(0): " << bytesWritten << " bytes\n"; + + // Read as much as we can from socket 1 + bytesRead = readALot(sv[1]); + assert(bytesRead == bytesWritten); + cout << "Read(1): " << bytesRead << " bytes\n"; + + auto_ptr<Poller> poller(new Poller); + + PollerHandle h0(sv[0]); + PollerHandle h1(sv[1]); + + poller->addFd(h0, Poller::INOUT); + + // Wait for 500ms - h0 should be writable + Poller::Event event = poller->wait(); + assert(event.handle == &h0); + assert(event.dir == Poller::OUT); + + // Write as much as we can to socket 0 + bytesWritten = writeALot(sv[0], testString); + cout << "Wrote(0): " << bytesWritten << " bytes\n"; + + // Wait for 500ms - h0 no longer writable + poller->rearmFd(h0); + event = poller->wait(500000000); + assert(event.handle == 0); + + // Test we can read it all now + poller->addFd(h1, Poller::INOUT); + event = poller->wait(); + assert(event.handle == &h1); + assert(event.dir == Poller::INOUT); + + bytesRead = readALot(sv[1]); + assert(bytesRead == bytesWritten); + cout << "Read(1): " << bytesRead << " bytes\n"; + + // At this point h1 should have been disabled from the poller + // (as it was just returned) and h0 can write again + event = poller->wait(); + assert(event.handle == &h0); + assert(event.dir == Poller::OUT); + + // Now both the handles should be disabled + event = poller->wait(500000000); + assert(event.handle == 0); + + // Test shutdown + poller->shutdown(); + event = poller->wait(); + assert(event.handle == 0); + assert(event.dir == Poller::SHUTDOWN); + + event = poller->wait(); + assert(event.handle == 0); + assert(event.dir == Poller::SHUTDOWN); + + poller->delFd(h1); + poller->delFd(h0); + + return 0; + } catch (exception& e) { + cout << "Caught exception " << e.what() << "\n"; + } +} + + |