Function getMappedFileName

src/common/isc_sync.cpp:1540–1574

Get name of the file that was mapped into memory at given address. This routine should not throw as caller is not ready currently.

// Get name of the file that was mapped into memory at given address.
// This routine should not throw as caller is not ready currently.
static bool getMappedFileName(void* addr, PathName& mappedName)
{
	char* mapName = mappedName.getBuffer(MAXPATHLEN + 1);
	const DWORD mapLen = GetMappedFileName(GetCurrentProcess(), addr, mapName, MAXPATHLEN);
	mappedName.resize(mapLen);
	if (!mapLen)
		//system_call_failed::raise("GetMappedFileName");
		return false;

	char dosDevice[] = {'A', ':', 0};

	DWORD drives = GetLogicalDrives();
	for (; drives; drives >>= 1, dosDevice[0]++)
		if (drives & 1)
		{
			char ntDevice[MAXPATHLEN + 1];
			DWORD ntLen = QueryDosDevice(dosDevice, ntDevice, MAXPATHLEN);

			if (!ntLen)
				//system_call_failed::raise("QueryDosDevice");
				return false;

			ntLen = strlen(ntDevice);

			if (ntLen <= mapLen &&
				_memicmp(ntDevice, mapName, ntLen) == 0 &&
				mapName[ntLen] == '\\')
			{
				mappedName.replace(0, ntLen, dosDevice);
				return true;
			}
		}

	return false;
}


void SharedMemoryBase::internalUnmap()