Classification: Public So I presume a WAIT_ABANDONED means that a MSI is running?
-----Original Message----- From: Phil Wilson [mailto:phildgwil...@gmail.com] Sent: January-27-15 3:49 PM To: General discussion about the WiX toolset. Subject: Re: [WiX-users] seeing if a MSI is running using mutex... [P] Now I look closer, I think you're missing something. CreateMute() by itself isn't sufficient. You have to attempt to get it. The code I've used also has a WaitForSingleObject to try to own the mutex: hMutex = CreateMutex(&sa, FALSE, TEXT("Global\_MSIExecute")); ..... dwError = WaitForSingleObject(hMutex, INFINITE); if (WAIT_OBJECT_0 == dwError) { // You have the mutex therefore MSI isn't installing anything } --------------- Phil Wilson On Tue, Jan 27, 2015 at 10:56 AM, Steven Ogilvie <steven.ogil...@titus.com> wrote: > Classification: Public > There was code from NetFxChainer.cpp (CreateNetFxChainer): > hr = StrAllocFormatted(&sczName, L"%ls_mutex", wzEventName); > ExitOnFailure(hr, "failed to allocate memory for mutex name"); > > // Create the mutex, we initially own > pChainer->hMutex = ::CreateMutex(NULL, TRUE, sczName); > > so I was trying that... > > it seems nothing is working... I have a MSI running and installing, > another MSI pops up an error message that another MSI is running but > my code isn't working, it isn't getting ERROR_ALREADY_EXISTS > > steve > > -----Original Message----- > From: Phil Wilson [mailto:phildgwil...@gmail.com] > Sent: January-27-15 1:25 PM > To: General discussion about the WiX toolset. > Subject: Re: [WiX-users] seeing if a MSI is running using mutex... > > I'll put it this way: I don't understand why you're not passing the string > LPCWSTR sczMutexName = L"Global\\_MSIExecute"; into CreateMutex(). Why the > StrAllocFormatted call? > > Also it's only locked during the execute sequence, and I don't know how > you're testing it. > > --------------- > Phil Wilson > > > On Tue, Jan 27, 2015 at 10:08 AM, StevenOgilvie <sogil...@msn.com> wrote: >> What is the actual MSI mutex? >> >> Thanks >> >> Steve >> >> From: Phil Wilson [via Windows Installer XML (WiX) toolset] >> Sent: Tuesday, January 27, 2015 12:59 >> To: StevenOgilvie >> Subject: Re: seeing if a MSI is running using mutex... >> >> >> >> >> It appears that your CreateMutex isn't passing in the actual MSI >> mutex in sczMutexName . >> --------------- >> Phil Wilson >> >> >> On Tue, Jan 27, 2015 at 7:51 AM, StevenOgilvie <sogil...@msn.com> wrote: >>> Hi all, >>> >>> Trying to create a method to detect if ANY MSI is running and if so >>> halt bootstrapper... >>> I am doing this in C++ >>> >>> I get a successful mutex, but it always returns ERROR_SUCCESS, what >>> am I doing wrong? >>> thanks >>> Steve >>> >>> >>> HANDLE ghMutex = NULL; >>> LPCWSTR sczVerifyMSIRunningVariableSet = L"0"; LPWSTR >>> sczVerifyMSIRunningVariable = NULL; LPWSTR >>> sczUnformattedVerifyMSIRunningVariable = NULL; LPCWSTR sczMutexName >>> = L"Global\\_MSIExecute"; LPWSTR sczName = NULL; BOOL MutexExist = >>> FALSE; >>> >>> // get the bootstrapper variable to change hr = >>> BalGetStringVariable(WIXSTDBA_VARIABLE_IS_ANOTHER_MSI_RUNNING, >>> &sczUnformattedVerifyMSIRunningVariable); >>> BalExitOnFailure1(hr, "Failed to get MSI running variable: >>> %ls", WIXSTDBA_VARIABLE_IS_ANOTHER_MSI_RUNNING); >>> hr = BalFormatString(sczUnformattedVerifyMSIRunningVariable, >>> &sczVerifyMSIRunningVariable); >>> BalExitOnFailure1(hr, "Failed to format get MSI running variable: >>> %ls", sczUnformattedVerifyMSIRunningVariable); >>> hr = StrAllocFormatted(&sczName, L"%ls", sczMutexName); >>> ::MessageBoxW(m_hWnd, (LPCWSTR)sczName, >>> (LPCWSTR)m_pTheme->sczCaption, MB_OK | MB_ICONWARNING); >>> >>> // check to see if any MSI is running >>> ghMutex = ::CreateMutex( >>> NULL, // default security attributes >>> FALSE, // initially not owned >>> sczName); // product name >>> >>> if (ghMutex != NULL) >>> { >>> ::MessageBoxW(m_hWnd, L"ghMutex was not null", >>> (LPCWSTR)m_pTheme->sczCaption, MB_OK | MB_ICONWARNING); >>> >>> switch (GetLastError()) >>> { >>> case ERROR_SUCCESS: >>> // Mutex created successfully. There is no >>> instance running >>> ::MessageBoxW(m_hWnd, L"ghMutex: Mutex created >>> successfully. There is no instance running FALSE", >>> (LPCWSTR)m_pTheme->sczCaption, MB_OK | MB_ICONWARNING); >>> MutexExist = FALSE; >>> break; >>> case ERROR_ALREADY_EXISTS: >>> // Mutex already exists so there is a running instance >>> ::MessageBoxW(m_hWnd, L"ghMutex: Mutex already >>> exists so there is a running instance TRUE", >>> (LPCWSTR)m_pTheme->sczCaption, MB_OK | MB_ICONWARNING); >>> MutexExist = TRUE; >>> break; >>> default: >>> // Failed to create Mutex by unknown reason >>> ::MessageBoxW(m_hWnd, L"ghMutex: Failed to >>> create Mutex by unknown reason FALSE", >>> (LPCWSTR)m_pTheme->sczCaption, MB_OK >>> | MB_ICONWARNING); >>> MutexExist = FALSE; >>> break; >>> } >>> } >>> >>> if (MutexExist) >>> { >>> sczVerifyMSIRunningVariableSet = L"1"; >>> } >>> >>> // a MSI is installing >>> hr = >>> m_pEngine->SetVariableString(LPCWSTR(sczVerifyMSIRunningVariable), >>> sczVerifyMSIRunningVariableSet); >>> >>> >>> > This message has been marked as Public by Steven Ogilvie on January-28-15 10:22:41 AM. 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