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);
>>
>>
>>
>> --
>> View this message in context:
>> http://windows-installer-xml-wix-toolset.687559.n2.nabble.com/seeing-if-a-MSI-is-running-using-mutex-tp7599025.html
>> Sent from the wix-users mailing list archive at Nabble.com.
>>
>> ------------------------------------------------------------------------------
>> Dive into the World of Parallel Programming. The Go Parallel Website,
>> sponsored by Intel and developed in partnership with Slashdot Media, is your
>> hub for all things parallel software development, from weekly thought
>> leadership blogs to news, videos, case studies, tutorials and more. Take a
>> look and join the conversation now. http://goparallel.sourceforge.net/
>> _______________________________________________
>> WiX-users mailing list
>> WiX-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/wix-users
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming. The Go Parallel Website,
> sponsored by Intel and developed in partnership with Slashdot Media, is your
> hub for all things parallel software development, from weekly thought
> leadership blogs to news, videos, case studies, tutorials and more. Take a
> look and join the conversation now. http://goparallel.sourceforge.net/
> _______________________________________________
> WiX-users mailing list
> WiX-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/wix-users
>
>
>
>
> _______________________________________________
> If you reply to this email, your message will be added to the discussion
> below:
> http://windows-installer-xml-wix-toolset.687559.n2.nabble.com/seeing-if-a-MSI-is-running-using-mutex-tp7599025p7599035.html
>
> To unsubscribe from seeing if a MSI is running using mutex..., visit
> http://windows-installer-xml-wix-toolset.687559.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=7599025&code=c29naWx2aWVAbXNuLmNvbXw3NTk5MDI1fC0xMzAxOTI3MzMx
>
>
>
>
> --
> View this message in context:
> http://windows-installer-xml-wix-toolset.687559.n2.nabble.com/seeing-if-a-MSI-is-running-using-mutex-tp7599025p7599036.html
> Sent from the wix-users mailing list archive at Nabble.com.
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming. The Go Parallel Website,
> sponsored by Intel and developed in partnership with Slashdot Media, is your
> hub for all things parallel software development, from weekly thought
> leadership blogs to news, videos, case studies, tutorials and more. Take a
> look and join the conversation now. http://goparallel.sourceforge.net/
> _______________________________________________
> WiX-users mailing list
> WiX-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/wix-users
------------------------------------------------------------------------------
Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/
_______________________________________________
WiX-users mailing list
WiX-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/wix-users
