static HRESULT CreateTempEvent(const wchar_t *name,
NSynchronization::CManualResetEvent &event, UString &eventName)
{
CRandom random;
random.Init(GetTickCount());
for (;;)
{
int number = random.Generate();
wchar_t temp[32];
ConvertUInt64ToString((UInt32)number, temp);
eventName = name;
eventName += temp;
RINOK(event.CreateWithName(false, GetSystemString(eventName)));
if (::GetLastError() != ERROR_ALREADY_EXISTS)
return S_OK;
event.Close();
}
}
static HRESULT CreateMap(const UStringVector &names,
CFileMapping &fileMapping, NSynchronization::CManualResetEvent &event,
UString ¶ms)
{
size_t totalSize = 1;
{
FOR_VECTOR (i, names)
totalSize += (names[i].Len() + 1);
}
totalSize *= sizeof(wchar_t);
CRandNameGenerator random;
UString mappingName;
for (;;)
{
random.GenerateName(mappingName, "7zMap");
WRes res = fileMapping.Create(PAGE_READWRITE, totalSize, GetSystemString(mappingName));
if (fileMapping.IsCreated() && res == 0)
break;
if (res != ERROR_ALREADY_EXISTS)
return res;
fileMapping.Close();
}
UString eventName;
for (;;)
{
random.GenerateName(eventName, "7zEvent");
WRes res = event.CreateWithName(false, GetSystemString(eventName));
if (event.IsCreated() && res == 0)
break;
if (res != ERROR_ALREADY_EXISTS)
return res;
event.Close();
}
params += L'#';
params += mappingName;
params += L':';
char temp[32];
ConvertUInt64ToString(totalSize, temp);
params.AddAscii(temp);
params += L':';
params += eventName;
LPVOID data = fileMapping.Map(FILE_MAP_WRITE, 0, totalSize);
if (!data)
return E_FAIL;
CFileUnmapper unmapper(data);
{
wchar_t *cur = (wchar_t *)data;
*cur++ = 0; // it means wchar_t strings (UTF-16 in WIN32)
FOR_VECTOR (i, names)
{
const UString &s = names[i];
unsigned len = s.Len() + 1;
wmemcpy(cur, (const wchar_t *)s, len);
cur += len;
}
}
return S_OK;
}
