void deposit(string rec) {
while (count == lenght - 1) {
not_full.wait();
}
buffer[rear] = rec;
if (rear < lenght)
rear++;
if (rear == lenght)
rear = 0;
count++;
not_empty.post();
}
string fetch() {
while (count == 0) {
not_empty.wait();
}
string result = buffer[front];
if (front < lenght)
front = (front + 1) % lenght;
if (front == lenght)
front = 0;
count--;
not_full.post();
//buffer[front] = "";
return result;
}
NMBLSEXPORT void handleUnLoadLibrary(void)
{
done = true;
sign.post();
// Currently throwing: what(): boost: mutex lock failed in pthread_mutex_lock: Invalid argument
// But given we are using an atomic done flag - is this needed?
// worker_thread.join_all();
for ( auto it = dbhandles.begin(); it != dbhandles.end(); it++)
{
sqlite3_close_v2(it->second);
}
std::cout << "Oppertunity to clean up..." << std::endl;
}
NMBLSEXPORT bool handleWebRequest(std::string method, websockcon ref, std::string webfilename, ValuePair &queryparams, ValuePair &httpheaders, boost::function<void(std::string, std::string, std::string)> postResponceCallback)
{
// Only supported method (at the moment?)
if ( "GET" != method )
{
return false;
}
// First check if we have a statement to process for this request.
std::string filename;
// This should be long enough
filename.reserve(512);
filename += docroot;
filename += boost::filesystem::path::preferred_separator;
// To get here we must have got the host header
std::string host = httpheaders["host"];
filename += host;
filename += boost::filesystem::path::preferred_separator;
filename += "sqlite";
filename += boost::filesystem::path::preferred_separator;
std::string hostroot = filename;
filename += "files";
filename += boost::filesystem::path::preferred_separator;
filename += webfilename;
if (is_running_as_debug) std::cout << "Checking for sqlite file " << filename << std::endl;
try{
if ( !boost::filesystem::is_regular_file(filename) )
{
if ( !boost::filesystem::is_directory(filename) )
{
return false;
}
else
{
filename += boost::filesystem::path::preferred_separator;
filename += "index";
if ( !boost::filesystem::is_regular_file(filename) )
{
// nothing to see here!
return false;
}
}
}
}
catch (boost::filesystem::filesystem_error)
{
return false;
}
// Second check we have not created too much of a backlog
if ( backlog >= WORKERBACKLOGSIZE )
{
// Post a 500 error of some form...
return true;
}
// Now post it to the workers.
int currentindex = nextavailable % WORKERBACKLOGSIZE ;
nextavailable++;
backlog++;
auto it = requests.begin() + currentindex;
it->ref = ref;
it->filename = filename;
it->host = host;
it->hostroot = hostroot;
it->postResponceCallback = postResponceCallback;
it->http_headers = httpheaders;
it->params = queryparams;
workqueue.push(currentindex);
sign.post();
return true;
}
