void Space::Release(Space* pSpace, FileHandle& pHandler)
{
if (NULL == pSpace)
return;
switch(pSpace->type()) {
case ALLOCATED_ARRAY:
free(pSpace->memory());
break;
case MMAPED:
if (!pHandler.munmap(pSpace->memory(), pSpace->size()))
error(diag::err_cannot_munmap_file) << pHandler.path();
break;
default: // external and unallocated memory buffers
break;
} // end of switch
}
void Space::Sync(Space* pSpace, FileHandle& pHandler)
{
if (NULL == pSpace || !pHandler.isWritable())
return;
switch(pSpace->type()) {
case Space::ALLOCATED_ARRAY: {
if (!pHandler.write(pSpace->memory(),
pSpace->start(),
pSpace->size())) {
error(diag::err_cannot_write_file) << pHandler.path()
<< pSpace->start()
<< pSpace->size();
}
return;
}
case Space::MMAPED:
default: {
// system will eventually write bakc the memory after
// calling ::munmap
return;
}
} // end of switch
}
void FileHandle::copyTo (FileHandle& dest) {
ifstream_ptr input;
ofstream_ptr output;
try {
input = read();
output = dest.write(false);
char buffer[4096];
while (true) {
input->read(buffer, 4096);
output->write(buffer, input->gcount());
if(input->eof() || input->peek() == EOF) break;
}
} catch(std::runtime_error ex) {
if(input->is_open()) input->close();
if(output->is_open()) output->close();
throw std::runtime_error("Error copying source file: " + path() + " (" + typetoString() + ")\n" + "To destination: " + dest.path() + " (" + dest.typetoString() + ")");
}
if(input->is_open()) input->close();
if(output->is_open()) output->close();
}
