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Solution attempt for timing bugs in write_bufferRateLimit

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It's probably better to wait until the buffer is sent, rather than
waiting until its empty. To test the output it has to be sent, but
because of timing, it may be emptied at any point.
This commit is contained in:
Nick Bolton 2015-05-20 15:51:07 +01:00
parent f1af62927e
commit 9636af61d6
4 changed files with 29 additions and 29 deletions
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20
src/lib/ipc/IpcLogOutputter.cpp
View File

@ -46,8 +46,6 @@ IpcLogOutputter::IpcLogOutputter(IpcServer& ipcServer) :
m_notifyMutex(ARCH->newMutex()),
m_bufferWaiting(false),
m_bufferMaxSize(kBufferMaxSize),
m_bufferEmptyCond(ARCH->newCondVar()),
m_bufferEmptyMutex(ARCH->newMutex()),
m_bufferRateWriteLimit(kBufferRateWriteLimit),
m_bufferRateTimeLimit(kBufferRateTimeLimit),
m_bufferWriteCount(0),
@ -66,13 +64,6 @@ IpcLogOutputter::~IpcLogOutputter()
ARCH->closeCondVar(m_notifyCond);
ARCH->closeMutex(m_notifyMutex);
ARCH->closeCondVar(m_bufferEmptyCond);
#ifndef WINAPI_CARBON
// HACK: assert fails on mac debug, can't see why.
ARCH->closeMutex(m_bufferEmptyMutex);
#endif // WINAPI_CARBON
}
void
@ -172,11 +163,6 @@ IpcLogOutputter::bufferThread(void*)
break;
}
if (m_buffer.empty()) {
ArchMutexLock lock(m_bufferEmptyMutex);
ARCH->broadcastCondVar(m_bufferEmptyCond);
}
m_bufferWaiting = true;
ARCH->waitCondVar(m_notifyCond, m_notifyMutex, -1);
m_bufferWaiting = false;
@ -239,12 +225,6 @@ IpcLogOutputter::bufferMaxSize() const
return m_bufferMaxSize;
}
void
IpcLogOutputter::waitForEmpty()
{
ARCH->waitCondVar(m_bufferEmptyCond, m_bufferEmptyMutex, -1);
}
void
IpcLogOutputter::bufferRateLimit(UInt16 writeLimit, double timeLimit)
{

2
src/lib/ipc/IpcLogOutputter.h
View File

@ -106,8 +106,6 @@ private:
IArchMultithread::ThreadID
m_bufferThreadId;
UInt16 m_bufferMaxSize;
ArchCond m_bufferEmptyCond;
ArchMutex m_bufferEmptyMutex;
UInt16 m_bufferRateWriteLimit;
double m_bufferRateTimeLimit;
UInt16 m_bufferWriteCount;

25
src/test/mock/ipc/MockIpcServer.h
View File

@ -19,17 +19,40 @@
#include "ipc/IpcServer.h"
#include "ipc/IpcMessage.h"
#include "arch/Arch.h"
#include "test/global/gmock.h"
using ::testing::_;
using ::testing::Invoke;
class IEventQueue;
class MockIpcServer : public IpcServer
{
public:
MockIpcServer() { }
MockIpcServer() :
m_sendCond(ARCH->newCondVar()),
m_sendMutex(ARCH->newMutex()) { }
MOCK_METHOD0(listen, void());
MOCK_METHOD2(send, void(const IpcMessage&, EIpcClientType));
MOCK_CONST_METHOD1(hasClients, bool(EIpcClientType));
void delegateToFake() {
ON_CALL(*this, send(_, _)).WillByDefault(Invoke(this, &MockIpcServer::mockSend));
}
void waitForSend() {
ARCH->waitCondVar(m_sendCond, m_sendMutex, -1);
}
private:
void mockSend(const IpcMessage&, EIpcClientType) {
ArchMutexLock lock(m_sendMutex);
ARCH->broadcastCondVar(m_sendCond);
}
ArchCond m_sendCond;
ArchMutex m_sendMutex;
};

11
src/test/unittests/ipc/IpcLogOutputterTests.cpp
View File

@ -48,6 +48,7 @@ inline const Matcher<const IpcMessage&> IpcLogLineMessageEq(const String& s) {
TEST(IpcLogOutputterTests, write_bufferSizeWrapping)
{
MockIpcServer mockServer;
mockServer.delegateToFake();
ON_CALL(mockServer, hasClients(_)).WillByDefault(Return(true));
@ -61,14 +62,13 @@ TEST(IpcLogOutputterTests, write_bufferSizeWrapping)
outputter.write(kNOTE, "mock 1");
outputter.write(kNOTE, "mock 2");
outputter.write(kNOTE, "mock 3");
// wait for the buffer to be empty (all lines sent to IPC)
outputter.waitForEmpty();
mockServer.waitForSend();
}
TEST(IpcLogOutputterTests, write_bufferRateLimit)
{
MockIpcServer mockServer;
mockServer.delegateToFake();
ON_CALL(mockServer, hasClients(_)).WillByDefault(Return(true));
@ -82,14 +82,13 @@ TEST(IpcLogOutputterTests, write_bufferRateLimit)
// log 1 more line than the buffer can accept in time limit.
outputter.write(kNOTE, "mock 1");
outputter.write(kNOTE, "mock 2");
outputter.waitForEmpty();
mockServer.waitForSend();
// after waiting the time limit send another to make sure
// we can log after the time limit passes.
ARCH->sleep(0.01); // 10ms
outputter.write(kNOTE, "mock 3");
outputter.write(kNOTE, "mock 4");
outputter.waitForEmpty();
mockServer.waitForSend();
}
#endif // WINAPI_MSWINDOWS