// NavDataCache.cxx - defines a unified binary cache for navigation
// data, parsed from various text / XML sources.
// Written by James Turner, started 2012.
//
// Copyright (C) 2012 James Turner
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include "config.h"
#include "NavDataCache.hxx"
// std
#include <cstddef> // for std::size_t
#include <map>
#include <cstring> // for memcoy
#include <cassert>
#include <stdint.h> // for int64_t
#include <sstream> // for std::ostringstream
#include <mutex>
#ifdef SYSTEM_SQLITE
// the standard sqlite3.h doesn't give a way to set SQLITE_UINT64_TYPE,
// so we have to hope sizeof(int64_t) matches sizeof(sqlite3_int64).
// otherwise things will go bad quickly.
#include "sqlite3.h"
#else
// to ensure compatability between sqlite3_int64 and PositionedID,
// force the type used by sqlite to match PositionedID explicitly
#define SQLITE_INT64_TYPE int64_t
#define SQLITE_UINT64_TYPE uint64_t
#include "fg_sqlite3.h"
#endif
#if defined(SG_WINDOWS)
#define WIN32_LEAN_AND_MEAN // less crap :)
#include <Windows.h>
#else
# include <sys/file.h>
#include <unistd.h>
#endif
// SimGear
#include <simgear/sg_inlines.h>
#include <simgear/structure/exception.hxx>
#include <simgear/debug/logstream.hxx>
#include <simgear/bucket/newbucket.hxx>
#include <simgear/misc/sg_path.hxx>
#include <simgear/misc/sg_dir.hxx>
#include <simgear/misc/strutils.hxx>
#include <simgear/threads/SGThread.hxx>
#include "CacheSchema.h"
#include "PositionedOctree.hxx"
#include "fix.hxx"
#include "markerbeacon.hxx"
#include "navrecord.hxx"
#include "poidb.hxx"
#include <ATC/CommStation.hxx>
#include <Airports/airport.hxx>
#include <Airports/apt_loader.hxx>
#include <Airports/gnnode.hxx>
#include <Airports/parking.hxx>
#include <Airports/runways.hxx>
#include <GUI/MessageBox.hxx>
#include <Main/fg_props.hxx>
#include <Main/globals.hxx>
#include <Main/options.hxx>
#include <Main/sentryIntegration.hxx>
#include <Navaids/airways.hxx>
#include <Navaids/fixlist.hxx>
#include <Navaids/navdb.hxx>
using std::string;
#define SG_NAVCACHE SG_NAVAID
//#define LAZY_OCTREE_UPDATES 1
namespace {
const int MAX_RETRIES = 10;
const int CACHE_SIZE_KBYTES= 32 * 1024;
// bind a std::string to a sqlite statement. The std::string must live the
// entire duration of the statement execution - do not pass a temporary
// std::string, or the compiler may delete it, freeing the C-string storage,
// and causing subtle memory corruption bugs!
void sqlite_bind_stdstring(sqlite3_stmt* stmt, int value, const std::string& s)
{
sqlite3_bind_text(stmt, value, s.c_str(), s.length(), SQLITE_STATIC);
}
// variant of the above, which does not care about the lifetime of the
// passed std::string
void sqlite_bind_temp_stdstring(sqlite3_stmt* stmt, int value, const std::string& s)
{
sqlite3_bind_text(stmt, value, s.c_str(), s.length(), SQLITE_TRANSIENT);
}
typedef sqlite3_stmt* sqlite3_stmt_ptr;
void f_distanceCartSqrFunction(sqlite3_context* ctx, int argc, sqlite3_value* argv[])
{
if (argc != 6) {
return;
}
SGVec3d posA(sqlite3_value_double(argv[0]),
sqlite3_value_double(argv[1]),
sqlite3_value_double(argv[2]));
SGVec3d posB(sqlite3_value_double(argv[3]),
sqlite3_value_double(argv[4]),
sqlite3_value_double(argv[5]));
sqlite3_result_double(ctx, distSqr(posA, posB));
}
static string cleanRunwayNo(const string& aRwyNo)
{
if (aRwyNo[0] == 'x') {
return string(); // no ident for taxiways
}
string result(aRwyNo);
// canonicalise runway ident to two digits and one optional uppercase letter
if ((aRwyNo.size() == 1) || !isdigit(aRwyNo[1])) {
result = "0" + aRwyNo;
}
// trim off trailing garbage
if (result.size() > 2) {
char suffix = toupper(result[2]);
if (suffix == 'X') {
result = result.substr(0, 2);
}
}
return result;
}
} // anonymous namespace
namespace flightgear
{
/**
* Thread encapsulating a cache rebuild. This is not used to parallelise
* the rebuild - we must still wait until completion before doing other
* startup, since many things rely on a complete cache. The thread is used
* so we don't block the main event loop for an unacceptable duration,
* which causes 'not responding' / spinning beachballs on Windows & Mac
*/
class RebuildThread : public SGThread
{
public:
RebuildThread(NavDataCache* cache) :
_cache(cache),
_phase(NavDataCache::REBUILD_UNKNOWN),
_completionPercent(0),
_isFinished(false)
{
}
bool isFinished() const
{
std::lock_guard<std::mutex> g(_lock);
return _isFinished;
}
virtual void run()
{
SGTimeStamp st;
st.stamp();
_cache->doRebuild();
SG_LOG(SG_NAVCACHE, SG_INFO, "cache rebuild took:" << st.elapsedMSec() << "msec");
std::lock_guard<std::mutex> g(_lock);
_isFinished = true;
_phase = NavDataCache::REBUILD_DONE;
}
NavDataCache::RebuildPhase currentPhase() const
{
NavDataCache::RebuildPhase ph;
std::lock_guard<std::mutex> g(_lock);
ph = _phase;
return ph;
}
unsigned int completionPercent() const
{
unsigned int perc = 0;
std::lock_guard<std::mutex> g(_lock);
perc = _completionPercent;
return perc;
}
void setProgress(NavDataCache::RebuildPhase ph, unsigned int percent)
{
std::lock_guard<std::mutex> g(_lock);
_phase = ph;
_completionPercent = percent;
}
private:
NavDataCache* _cache;
NavDataCache::RebuildPhase _phase;
unsigned int _completionPercent;
mutable std::mutex _lock;
bool _isFinished;
};
////////////////////////////////////////////////////////////////////////////
typedef std::map<PositionedID, FGPositionedRef> PositionedCache;
class AirportTower : public FGPositioned
{
public:
AirportTower(PositionedID& guid, PositionedID airport,
const string& ident, const SGGeod& pos) :
FGPositioned(guid, FGPositioned::TOWER, ident, pos)
{
SG_UNUSED(airport);
}
};
// useful for debugging 'hanging' queries: look for a statement
// which starts but never completes
#if 0
int traceCallback(unsigned int traceCode, void* ctx, void* p, void* x)
{
if (traceCode == SQLITE_TRACE_STMT) {
SG_LOG(SG_NAVCACHE, SG_WARN, "step:" << p << " text=" << (char*)x);
}
else if (traceCode == SQLITE_TRACE_PROFILE) {
int64_t* nanoSecs = (int64_t*)x;
SG_LOG(SG_NAVCACHE, SG_WARN, "profile:" << p << " took " << *nanoSecs);
}
return 0;
}
#endif
class NavDataCache::NavDataCachePrivate
{
public:
NavDataCachePrivate(const SGPath& p, NavDataCache* o) :
outer(o),
db(nullptr),
path(p),
readOnly(false),
cacheHits(0),
cacheMisses(0),
transactionLevel(0),
transactionAborted(false)
{
}
~NavDataCachePrivate()
{
close();
}
void init()
{
SG_LOG(SG_NAVCACHE, SG_INFO, "NavCache at:" << path);
readOnly = fgGetBool("/sim/fghome-readonly", false);
SG_LOG(SG_NAVCACHE, SG_INFO, "NavCache read-only flags is:" << readOnly);
if (!readOnly && !path.canWrite()) {
throw sg_exception("Nav-cache file is not writeable");
}
if (outer->isAnotherProcessRebuilding()) {
SG_LOG(SG_NAVCACHE, SG_ALERT, "NavDataCache: init() while another processing is rebuilding the DB");
}
int openFlags = readOnly ? SQLITE_OPEN_READONLY :
(SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE);
std::string pathUtf8 = path.utf8Str();
int result = sqlite3_open_v2(pathUtf8.c_str(), &db, openFlags, NULL);
if (result == SQLITE_MISUSE) {
// docs state sqlite3_errmsg may not work in this case
SG_LOG(SG_NAVCACHE, SG_WARN, "Failed to open DB at " << path << ": misuse of Sqlite API");
throw sg_exception("Navcache failed to open: Sqlite API misuse");
} else if (result != SQLITE_OK) {
std::string errMsg = sqlite3_errmsg(db);
SG_LOG(SG_NAVCACHE, SG_WARN, "Failed to open DB at " << path << " with error:\n\t" << errMsg);
throw sg_exception("Navcache failed to open:" + errMsg);
}
if (!readOnly && (sqlite3_db_readonly(db, nullptr) != 0)) {
throw sg_exception("Nav-cache file opened but is not writeable");
}
// enable tracing for debugging stuck queries
// sqlite3_trace_v2(db, SQLITE_TRACE_STMT | SQLITE_TRACE_PROFILE, traceCallback, this);
sqlite3_stmt_ptr checkTables =
prepare("SELECT count(*) FROM sqlite_master WHERE name='properties'");
sqlite3_create_function(db, "distanceCartSqr", 6, SQLITE_ANY, NULL,
f_distanceCartSqrFunction, NULL, NULL);
execSelect(checkTables);
bool didCreate = false;
if (!readOnly && (sqlite3_column_int(checkTables, 0) == 0)) {
SG_LOG(SG_NAVCACHE, SG_INFO, "will create tables");
initTables();
didCreate = true;
}
reset(checkTables);
readPropertyQuery = prepare("SELECT value FROM properties WHERE key=?");
writePropertyQuery = prepare("INSERT INTO properties (key, value) VALUES (?,?)");
clearProperty = prepare("DELETE FROM properties WHERE key=?1");
if (didCreate) {
writeIntProperty("schema-version", SCHEMA_VERSION);
} else {
int schemaVersion = outer->readIntProperty("schema-version");
if (schemaVersion != SCHEMA_VERSION) {
SG_LOG(SG_NAVCACHE, SG_INFO, "Navcache schema mismatch, will rebuild");
throw sg_exception("Navcache schema has changed");
}
}
// see http://www.sqlite.org/pragma.html#pragma_cache_size
// for the details, small cache would cause thrashing.
std::ostringstream q;
q << "PRAGMA cache_size=-" << CACHE_SIZE_KBYTES << ";";
runSQL(q.str());
prepareQueries();
}
void close()
{
for (sqlite3_stmt_ptr stmt : prepared) {
sqlite3_finalize(stmt);
}
prepared.clear();
sqlite3_close(db);
}
void checkCacheFile()
{
SG_LOG(SG_NAVCACHE, SG_INFO, "running DB integrity check");
SGTimeStamp st;
st.stamp();
sqlite3_stmt_ptr stmt = prepare("PRAGMA quick_check(1)");
if (!execSelect(stmt)) {
throw sg_exception("DB integrity check failed to run");
}
string v = (char*) sqlite3_column_text(stmt, 0);
if (v != "ok") {
throw sg_exception("DB integrity check returned:" + v);
}
SG_LOG(SG_NAVCACHE, SG_INFO, "NavDataCache integrity check took:" << st.elapsedMSec());
finalize(stmt);
}
bool isCachedFileModified(const SGPath& path, bool verbose);
void findDatFiles(NavDataCache::DatFileType datFileType);
bool areDatFilesModified(
NavDataCache::DatFileType datFileType,
bool verbose);
void callSqlite(int result, const string& sql)
{
if (result == SQLITE_OK)
return; // all good
string errMsg;
if (result == SQLITE_MISUSE) {
errMsg = "Sqlite API abuse";
SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite API abuse");
} else {
errMsg = sqlite3_errmsg(db);
SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite error:" << errMsg << " running:\n\t" << sql);
}
throw sg_exception("Sqlite error:" + errMsg, sql);
}
void runSQL(const string& sql)
{
sqlite3_stmt_ptr stmt;
callSqlite(sqlite3_prepare_v2(db, sql.c_str(), sql.length(), &stmt, NULL), sql);
try {
execSelect(stmt);
} catch (sg_exception&) {
sqlite3_finalize(stmt);
throw; // re-throw
}
sqlite3_finalize(stmt);
}
sqlite3_stmt_ptr prepare(const string& sql)
{
sqlite3_stmt_ptr stmt;
callSqlite(sqlite3_prepare_v2(db, sql.c_str(), sql.length(), &stmt, NULL), sql);
prepared.push_back(stmt);
return stmt;
}
void finalize(sqlite3_stmt_ptr s)
{
StmtVec::iterator it = std::find(prepared.begin(), prepared.end(), s);
if (it == prepared.end()) {
throw sg_exception("Finalising statement that was not prepared");
}
prepared.erase(it);
sqlite3_finalize(s);
}
void reset(sqlite3_stmt_ptr stmt)
{
assert(stmt);
if (sqlite3_reset(stmt) != SQLITE_OK) {
string errMsg = sqlite3_errmsg(db);
SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite error resetting:" << errMsg);
throw sg_exception("Sqlite error resetting:" + errMsg, sqlite3_sql(stmt));
}
}
bool execSelect(sqlite3_stmt_ptr stmt)
{
return stepSelect(stmt);
}
bool stepSelect(sqlite3_stmt_ptr stmt)
{
int retries = 0;
int result;
int retryMSec = 10;
while (retries < MAX_RETRIES) {
result = sqlite3_step(stmt);
if (result == SQLITE_ROW) {
return true; // at least one result row
}
if (result == SQLITE_DONE) {
return false; // no result rows
}
if (result != SQLITE_BUSY) {
break;
}
SG_LOG(SG_NAVCACHE, SG_ALERT, "NavCache contention on select, will retry:" << retries);
SGTimeStamp::sleepForMSec(retryMSec);
retryMSec *= 2; // double the back-off time, each time
} // of retry loop for DB locked
if (retries >= MAX_RETRIES) {
SG_LOG(SG_NAVCACHE, SG_ALERT, "exceeded maximum number of SQLITE_BUSY retries");
return false;
}
string errMsg;
if (result == SQLITE_MISUSE) {
errMsg = "Sqlite API abuse";
SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite API abuse");
} else {
errMsg = sqlite3_errmsg(db);
SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite error:" << errMsg << " (" << result
<< ") while running:\n\t" << sqlite3_sql(stmt));
}
throw sg_exception("Sqlite error:" + errMsg, sqlite3_sql(stmt));
}
void execSelect1(sqlite3_stmt_ptr stmt)
{
if (!execSelect(stmt)) {
SG_LOG(SG_NAVCACHE, SG_WARN, "empty SELECT running:\n\t" << sqlite3_sql(stmt));
flightgear::sentryReportException("empty SELECT running:" + std::string{sqlite3_sql(stmt)});
throw sg_exception("no results returned for select", sqlite3_sql(stmt));
}
}
sqlite3_int64 execInsert(sqlite3_stmt_ptr stmt)
{
execSelect(stmt);
sqlite3_int64 rowid = sqlite3_last_insert_rowid(db);
reset(stmt);
return rowid;
}
void execUpdate(sqlite3_stmt_ptr stmt)
{
execSelect(stmt);
reset(stmt);
}
void initTables()
{
string_list commands = simgear::strutils::split(SCHEMA_SQL, ";");
for (std::string sql : commands) {
if (sql.empty()) {
continue;
}
runSQL(sql);
} // of commands in scheme loop
}
void prepareQueries()
{
writePropertyMulti = prepare("INSERT INTO properties (key, value) VALUES(?1,?2)");
beginTransactionStmt = prepare("BEGIN");
commitTransactionStmt = prepare("COMMIT");
rollbackTransactionStmt = prepare("ROLLBACK");
#define POSITIONED_COLS "rowid, type, ident, name, airport, lon, lat, elev_m, octree_node"
#define AND_TYPED "AND type>=?2 AND type <=?3"
statCacheCheck = prepare("SELECT stamp FROM stat_cache WHERE path=?");
stampFileCache = prepare("INSERT OR REPLACE INTO stat_cache "
"(path, stamp) VALUES (?,?)");
loadPositioned = prepare("SELECT " POSITIONED_COLS " FROM positioned WHERE rowid=?");
loadAirportStmt = prepare("SELECT has_metar FROM airport WHERE rowid=?");
loadNavaid = prepare("SELECT range_nm, freq, multiuse, runway, colocated FROM navaid WHERE rowid=?");
loadCommStation = prepare("SELECT freq_khz, range_nm FROM comm WHERE rowid=?");
loadRunwayStmt = prepare("SELECT heading, length_ft, width_m, surface, displaced_threshold,"
"stopway, reciprocal, ils FROM runway WHERE rowid=?1");
getAirportItems = prepare("SELECT rowid FROM positioned WHERE airport=?1 " AND_TYPED);
setAirportMetar = prepare("UPDATE airport SET has_metar=?2 WHERE rowid="
"(SELECT rowid FROM positioned WHERE ident=?1 AND type>=?3 AND type <=?4)");
sqlite3_bind_int(setAirportMetar, 3, FGPositioned::AIRPORT);
sqlite3_bind_int(setAirportMetar, 4, FGPositioned::SEAPORT);
setRunwayReciprocal = prepare("UPDATE runway SET reciprocal=?2 WHERE rowid=?1");
setRunwayILS = prepare("UPDATE runway SET ils=?2 WHERE rowid=?1");
setNavaidColocated = prepare("UPDATE navaid SET colocated=?2 WHERE rowid=?1");
insertPositionedQuery = prepare("INSERT INTO positioned "
"(type, ident, name, airport, lon, lat, elev_m, octree_node, "
"cart_x, cart_y, cart_z)"
" VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10, ?11)");
setAirportPos = prepare("UPDATE positioned SET lon=?2, lat=?3, elev_m=?4, octree_node=?5, "
"cart_x=?6, cart_y=?7, cart_z=?8 WHERE rowid=?1");
insertAirport = prepare("INSERT INTO airport (rowid, has_metar) VALUES (?, ?)");
insertNavaid = prepare("INSERT INTO navaid (rowid, freq, range_nm, multiuse, runway, colocated)"
" VALUES (?1, ?2, ?3, ?4, ?5, ?6)");
insertCommStation = prepare("INSERT INTO comm (rowid, freq_khz, range_nm)"
" VALUES (?, ?, ?)");
insertRunway = prepare("INSERT INTO runway "
"(rowid, heading, length_ft, width_m, surface, displaced_threshold, stopway, reciprocal)"
" VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8)");
runwayLengthFtQuery = prepare("SELECT length_ft FROM runway WHERE rowid=?1");
removePOIQuery = prepare("DELETE FROM positioned WHERE type=?1 AND ident=?2");
// query statement
findClosestWithIdent = prepare("SELECT rowid FROM positioned WHERE ident=?1 "
AND_TYPED " ORDER BY distanceCartSqr(cart_x, cart_y, cart_z, ?4, ?5, ?6)");
findCommByFreq = prepare("SELECT positioned.rowid FROM positioned, comm WHERE "
"positioned.rowid=comm.rowid AND freq_khz=?1 "
AND_TYPED " ORDER BY distanceCartSqr(cart_x, cart_y, cart_z, ?4, ?5, ?6)");
findNavsByFreq = prepare("SELECT positioned.rowid FROM positioned, navaid WHERE "
"positioned.rowid=navaid.rowid "
"AND navaid.freq=?1 " AND_TYPED
" ORDER BY distanceCartSqr(cart_x, cart_y, cart_z, ?4, ?5, ?6)");
findNavsByFreqNoPos = prepare("SELECT positioned.rowid FROM positioned, navaid WHERE "
"positioned.rowid=navaid.rowid AND freq=?1 " AND_TYPED);
findNavaidForRunway = prepare("SELECT positioned.rowid FROM positioned, navaid WHERE "
"positioned.rowid=navaid.rowid AND runway=?1 AND type=?2");
// for an octree branch, return the child octree nodes which exist,
// described as a bit-mask
getOctreeChildren = prepare("SELECT children FROM octree WHERE rowid=?1");
#ifdef LAZY_OCTREE_UPDATES
updateOctreeChildren = prepare("UPDATE octree SET children=?2 WHERE rowid=?1");
#else
// mask the new child value into the existing one
updateOctreeChildren = prepare("UPDATE octree SET children=(?2 | children) WHERE rowid=?1");
#endif
// define a new octree node (with no children)
insertOctree = prepare("INSERT INTO octree (rowid, children) VALUES (?1, 0)");
getOctreeLeafChildren = prepare("SELECT rowid, type FROM positioned WHERE octree_node=?1");
searchAirports = prepare("SELECT ident, name FROM positioned WHERE (name LIKE ?1 OR ident LIKE ?1) " AND_TYPED);
sqlite3_bind_int(searchAirports, 2, FGPositioned::AIRPORT);
sqlite3_bind_int(searchAirports, 3, FGPositioned::SEAPORT);
getAllAirports = prepare("SELECT ident, name FROM positioned WHERE type>=?1 AND type <=?2");
sqlite3_bind_int(getAllAirports, 1, FGPositioned::AIRPORT);
sqlite3_bind_int(getAllAirports, 2, FGPositioned::SEAPORT);
getAirportItemByIdent = prepare("SELECT rowid FROM positioned WHERE airport=?1 AND ident=?2 AND type=?3");
findAirportRunway = prepare("SELECT airport, rowid FROM positioned WHERE ident=?2 AND type=?3 AND airport="
"(SELECT rowid FROM positioned WHERE type=?4 AND ident=?1)");
sqlite3_bind_int(findAirportRunway, 3, FGPositioned::RUNWAY);
sqlite3_bind_int(findAirportRunway, 4, FGPositioned::AIRPORT);
// three-way join to get the navaid ident and runway ident in a single select.
// we're joining positioned to itself by the navaid runway, with the complication
// that we need to join the navaids table to get the runway ID.
// we also need to filter by type to excluse glideslope (GS) matches
findILS = prepare("SELECT nav.rowid FROM positioned AS nav, positioned AS rwy, navaid WHERE "
"nav.ident=?1 AND nav.airport=?2 AND rwy.ident=?3 "
"AND rwy.rowid = navaid.runway AND navaid.rowid=nav.rowid "
"AND (nav.type=?4 OR nav.type=?5)");
sqlite3_bind_int(findILS, 4, FGPositioned::ILS);
sqlite3_bind_int(findILS, 5, FGPositioned::LOC);
// airways
findAirwayNet = prepare("SELECT rowid FROM airway WHERE network=?1 AND ident=?2");
findAirway = prepare("SELECT rowid FROM airway WHERE ident=?1");
loadAirway = prepare("SELECT ident, network FROM airway WHERE rowid=?1");
insertAirway = prepare("INSERT INTO airway (ident, network) "
"VALUES (?1, ?2)");
insertAirwayEdge = prepare("INSERT INTO airway_edge (network, airway, a, b) "
"VALUES (?1, ?2, ?3, ?4)");
isPosInAirway = prepare("SELECT rowid FROM airway_edge WHERE network=?1 AND (a=?2 OR b=?2)");
airwayEdgesFrom = prepare("SELECT airway, b FROM airway_edge WHERE network=?1 AND a=?2");
airwayEdgesTo = prepare("SELECT airway, a FROM airway_edge WHERE network=?1 AND b=?2");
airwayEdges = prepare("SELECT a, b FROM airway_edge WHERE airway=?1");
}
void writeIntProperty(const string& key, int value)
{
if (!readOnly){
sqlite_bind_stdstring(clearProperty, 1, key);
execUpdate(clearProperty);
sqlite_bind_stdstring(writePropertyQuery, 1, key);
sqlite3_bind_int(writePropertyQuery, 2, value);
execUpdate(writePropertyQuery);
}
}
FGPositioned* loadById(sqlite_int64 rowId, sqlite3_int64& aptId);
FGAirport* loadAirport(sqlite_int64 rowId,
FGPositioned::Type ty,
const string& id, const string& name, const SGGeod& pos)
{
sqlite3_bind_int64(loadAirportStmt, 1, rowId);
execSelect1(loadAirportStmt);
bool hasMetar = (sqlite3_column_int(loadAirportStmt, 0) > 0);
reset(loadAirportStmt);
return new FGAirport(rowId, id, pos, name, hasMetar, ty);
}
FGRunwayBase* loadRunway(sqlite3_int64 rowId, FGPositioned::Type ty,
const string& id, const SGGeod& pos, PositionedID apt)
{
sqlite3_bind_int(loadRunwayStmt, 1, rowId);
execSelect1(loadRunwayStmt);
double heading = sqlite3_column_double(loadRunwayStmt, 0);
double lengthM = sqlite3_column_int(loadRunwayStmt, 1);
double widthM = sqlite3_column_double(loadRunwayStmt, 2);
int surface = sqlite3_column_int(loadRunwayStmt, 3);
if (ty == FGPositioned::TAXIWAY) {
reset(loadRunwayStmt);
return new FGTaxiway(rowId, id, pos, heading, lengthM, widthM, surface);
} else if (ty == FGPositioned::HELIPAD) {
reset(loadRunwayStmt);
return new FGHelipad(rowId, apt, id, pos, heading, lengthM, widthM, surface);
} else {
double displacedThreshold = sqlite3_column_double(loadRunwayStmt, 4);
double stopway = sqlite3_column_double(loadRunwayStmt, 5);
PositionedID reciprocal = sqlite3_column_int64(loadRunwayStmt, 6);
PositionedID ils = sqlite3_column_int64(loadRunwayStmt, 7);
FGRunway* r = new FGRunway(rowId, apt, id, pos, heading, lengthM, widthM,
displacedThreshold, stopway, surface);
if (reciprocal > 0) {
r->setReciprocalRunway(reciprocal);
}
if (ils > 0) {
r->setILS(ils);
}
reset(loadRunwayStmt);
return r;
}
}
CommStation* loadComm(sqlite3_int64 rowId, FGPositioned::Type ty,
const string& id, const string& name,
const SGGeod& pos,
PositionedID airport)
{
SG_UNUSED(id);
sqlite3_bind_int64(loadCommStation, 1, rowId);
execSelect1(loadCommStation);
int range = sqlite3_column_int(loadCommStation, 0);
int freqKhz = sqlite3_column_int(loadCommStation, 1);
reset(loadCommStation);
CommStation* c = new CommStation(rowId, name, ty, pos, freqKhz, range);
c->setAirport(airport);
return c;
}
FGPositioned* loadNav(sqlite3_int64 rowId,
FGPositioned::Type ty, const string& id,
const string& name, const SGGeod& pos)
{
sqlite3_bind_int64(loadNavaid, 1, rowId);
execSelect1(loadNavaid);
PositionedID runway = sqlite3_column_int64(loadNavaid, 3);
// marker beacons are light-weight
if ((ty == FGPositioned::OM) || (ty == FGPositioned::IM) ||
(ty == FGPositioned::MM))
{
reset(loadNavaid);
return new FGMarkerBeaconRecord(rowId, ty, runway, pos);
}
int rangeNm = sqlite3_column_int(loadNavaid, 0),
freq = sqlite3_column_int(loadNavaid, 1);
double mulituse = sqlite3_column_double(loadNavaid, 2);
PositionedID colocated = sqlite3_column_int64(loadNavaid, 4);
reset(loadNavaid);
FGNavRecord* n =
(ty == FGPositioned::MOBILE_TACAN)
? new FGMobileNavRecord
(rowId, ty, id, name, pos, freq, rangeNm, mulituse, runway)
: new FGNavRecord
(rowId, ty, id, name, pos, freq, rangeNm, mulituse, runway);
if (colocated)
n->setColocatedDME(colocated);
return n;
}
PositionedID insertPositioned(FGPositioned::Type ty, const string& ident,
const string& name, const SGGeod& pos, PositionedID apt,
bool spatialIndex)
{
SGVec3d cartPos(SGVec3d::fromGeod(pos));
sqlite3_bind_int(insertPositionedQuery, 1, ty);
sqlite_bind_stdstring(insertPositionedQuery, 2, ident);
sqlite_bind_stdstring(insertPositionedQuery, 3, name);
sqlite3_bind_int64(insertPositionedQuery, 4, apt);
sqlite3_bind_double(insertPositionedQuery, 5, pos.getLongitudeDeg());
sqlite3_bind_double(insertPositionedQuery, 6, pos.getLatitudeDeg());
sqlite3_bind_double(insertPositionedQuery, 7, pos.getElevationM());
if (spatialIndex) {
Octree::Leaf* octreeLeaf = Octree::global_spatialOctree->findLeafForPos(cartPos);
assert(intersects(octreeLeaf->bbox(), cartPos));
sqlite3_bind_int64(insertPositionedQuery, 8, octreeLeaf->guid());
} else {
sqlite3_bind_null(insertPositionedQuery, 8);
}
sqlite3_bind_double(insertPositionedQuery, 9, cartPos.x());
sqlite3_bind_double(insertPositionedQuery, 10, cartPos.y());
sqlite3_bind_double(insertPositionedQuery, 11, cartPos.z());
PositionedID r = execInsert(insertPositionedQuery);
return r;
}
FGPositionedList findAllByString(const string& s, const string& column,
FGPositioned::Filter* filter, bool exact)
{
string query = s;
if (!exact) query += "%";
// build up SQL query text
string matchTerm = exact ? "=?1" : " LIKE ?1";
string sql = "SELECT rowid FROM positioned WHERE " + column + matchTerm;
if (filter) {
sql += " " AND_TYPED;
}
// find or prepare a suitable statement frrm the SQL
sqlite3_stmt_ptr stmt = findByStringDict[sql];
if (!stmt) {
stmt = prepare(sql);
findByStringDict[sql] = stmt;
}
sqlite_bind_stdstring(stmt, 1, query);
if (filter) {
sqlite3_bind_int(stmt, 2, filter->minType());
sqlite3_bind_int(stmt, 3, filter->maxType());
}
FGPositionedList result;
// run the prepared SQL
while (stepSelect(stmt))
{
FGPositioned* pos = outer->loadById(sqlite3_column_int64(stmt, 0));
if (filter && !filter->pass(pos)) {
continue;
}
result.push_back(pos);
}
reset(stmt);
return result;
}
PositionedIDVec selectIds(sqlite3_stmt_ptr query)
{
PositionedIDVec result;
while (stepSelect(query)) {
result.push_back(sqlite3_column_int64(query, 0));
}
reset(query);
return result;
}
double runwayLengthFt(PositionedID rwy)
{
sqlite3_bind_int64(runwayLengthFtQuery, 1, rwy);
execSelect1(runwayLengthFtQuery);
double length = sqlite3_column_double(runwayLengthFtQuery, 0);
reset(runwayLengthFtQuery);
return length;
}
void flushDeferredOctreeUpdates()
{
for (Octree::Branch* nd : deferredOctreeUpdates) {
sqlite3_bind_int64(updateOctreeChildren, 1, nd->guid());
sqlite3_bind_int(updateOctreeChildren, 2, nd->childMask());
execUpdate(updateOctreeChildren);
}
deferredOctreeUpdates.clear();
}
void removePositionedWithIdent(FGPositioned::Type ty, const std::string& aIdent)
{
sqlite3_bind_int(removePOIQuery, 1, ty);
sqlite_bind_stdstring(removePOIQuery, 2, aIdent);
execUpdate(removePOIQuery);
reset(removePOIQuery);
}
NavDataCache* outer;
sqlite3* db;
SGPath path;
bool readOnly;
/// the actual cache of ID -> instances. This holds an owning reference,
/// so once items are in the cache they will never be deleted until
/// the cache drops its reference
PositionedCache cache;
unsigned int cacheHits, cacheMisses;
/**
* record the levels of open transaction objects we have
*/
unsigned int transactionLevel;
bool transactionAborted;
sqlite3_stmt_ptr beginTransactionStmt, commitTransactionStmt, rollbackTransactionStmt;
std::map<DatFileType, NavDataCache::DatFilesGroupInfo> datFilesInfo;
SGPath metarDatPath, poiDatPath,
carrierDatPath, airwayDatPath;
sqlite3_stmt_ptr readPropertyQuery, writePropertyQuery,
stampFileCache, statCacheCheck,
loadAirportStmt, loadCommStation, loadPositioned, loadNavaid,
loadRunwayStmt;
sqlite3_stmt_ptr writePropertyMulti, clearProperty;
sqlite3_stmt_ptr insertPositionedQuery, insertAirport, insertTower, insertRunway,
insertCommStation, insertNavaid;
sqlite3_stmt_ptr setAirportMetar, setRunwayReciprocal, setRunwayILS, setNavaidColocated,
setAirportPos;
sqlite3_stmt_ptr removePOIQuery;
sqlite3_stmt_ptr findClosestWithIdent;
// octree (spatial index) related queries
sqlite3_stmt_ptr getOctreeChildren, insertOctree, updateOctreeChildren,
getOctreeLeafChildren;
sqlite3_stmt_ptr searchAirports, getAllAirports;
sqlite3_stmt_ptr findCommByFreq, findNavsByFreq,
findNavsByFreqNoPos, findNavaidForRunway;
sqlite3_stmt_ptr getAirportItems, getAirportItemByIdent;
sqlite3_stmt_ptr findAirportRunway,
findILS;
sqlite3_stmt_ptr runwayLengthFtQuery;
// airways
sqlite3_stmt_ptr findAirway, findAirwayNet, insertAirwayEdge,
isPosInAirway, airwayEdgesFrom, airwayEdgesTo,
insertAirway, airwayEdges;
sqlite3_stmt_ptr loadAirway;
// since there's many permutations of ident/name queries, we create
// them programtically, but cache the exact query by its raw SQL once
// used.
std::map<string, sqlite3_stmt_ptr> findByStringDict;
typedef std::vector<sqlite3_stmt_ptr> StmtVec;
StmtVec prepared;
std::set<Octree::Branch*> deferredOctreeUpdates;
// if we're performing a rebuild, the thread that is doing the work.
// otherwise, NULL
std::unique_ptr<RebuildThread> rebuilder;
};
//////////////////////////////////////////////////////////////////////
FGPositioned* NavDataCache::NavDataCachePrivate::loadById(sqlite3_int64 rowid,
sqlite3_int64& aptId)
{
sqlite3_bind_int64(loadPositioned, 1, rowid);
execSelect1(loadPositioned);
assert(rowid == sqlite3_column_int64(loadPositioned, 0));
FGPositioned::Type ty = (FGPositioned::Type) sqlite3_column_int(loadPositioned, 1);
PositionedID prowid = static_cast<PositionedID>(rowid);
string ident = (char*) sqlite3_column_text(loadPositioned, 2);
string name = (char*) sqlite3_column_text(loadPositioned, 3);
aptId = sqlite3_column_int64(loadPositioned, 4);
double lon = sqlite3_column_double(loadPositioned, 5);
double lat = sqlite3_column_double(loadPositioned, 6);
double elev = sqlite3_column_double(loadPositioned, 7);
SGGeod pos = SGGeod::fromDegM(lon, lat, elev);
reset(loadPositioned);
switch (ty) {
case FGPositioned::AIRPORT:
case FGPositioned::SEAPORT:
case FGPositioned::HELIPORT:
return loadAirport(rowid, ty, ident, name, pos);
case FGPositioned::TOWER:
return new AirportTower(prowid, aptId, ident, pos);
case FGPositioned::RUNWAY:
case FGPositioned::HELIPAD:
case FGPositioned::TAXIWAY:
return loadRunway(rowid, ty, ident, pos, aptId);
case FGPositioned::LOC:
case FGPositioned::VOR:
case FGPositioned::GS:
case FGPositioned::ILS:
case FGPositioned::NDB:
case FGPositioned::OM:
case FGPositioned::MM:
case FGPositioned::IM:
case FGPositioned::DME:
case FGPositioned::TACAN:
case FGPositioned::MOBILE_TACAN:
return loadNav(rowid, ty, ident, name, pos);
case FGPositioned::FIX:
return new FGFix(rowid, ident, pos);
case FGPositioned::WAYPOINT:
case FGPositioned::COUNTRY:
case FGPositioned::CITY:
case FGPositioned::TOWN:
case FGPositioned::VILLAGE:
{
FGPositioned* wpt = new FGPositioned(rowid, ty, ident, pos);
return wpt;
}
case FGPositioned::FREQ_GROUND:
case FGPositioned::FREQ_TOWER:
case FGPositioned::FREQ_ATIS:
case FGPositioned::FREQ_AWOS:
case FGPositioned::FREQ_APP_DEP:
case FGPositioned::FREQ_ENROUTE:
case FGPositioned::FREQ_CLEARANCE:
case FGPositioned::FREQ_UNICOM:
return loadComm(rowid, ty, ident, name, pos, aptId);
default:
return NULL;
}
}
bool NavDataCache::NavDataCachePrivate::isCachedFileModified(const SGPath& path, bool verbose)
{
if (!path.exists()) {
throw sg_exception(
"NavCache: missing file '" + path.utf8Str() + "'",
string("NavDataCache::NavDataCachePrivate::isCachedFileModified()"));
}
sqlite_bind_temp_stdstring(statCacheCheck, 1, path.realpath().utf8Str());
bool isModified = true;
sgDebugPriority logLevel = verbose ? SG_WARN : SG_DEBUG;
if (execSelect(statCacheCheck)) {
time_t modtime = sqlite3_column_int64(statCacheCheck, 0);
time_t delta = std::labs(modtime - path.modTime());
if (delta != 0)
{
SG_LOG(SG_NAVCACHE, logLevel, "NavCache: rebuild required for " << path <<
". Timestamps: " << modtime << " != " << path.modTime());
}
else
{
SG_LOG(SG_NAVCACHE, SG_DEBUG, "NavCache: no rebuild required for " << path);
}
isModified = (delta != 0);
} else {
SG_LOG(SG_NAVCACHE, logLevel, "NavCache: (re-)build required because '" <<
path.utf8Str() << "' is not in the cache");
}
reset(statCacheCheck);
return isModified;
}
// Find the list of $scenery_path/NavData/<type>/*.dat[.gz] files found
// inside scenery paths, plus the default file for the given type (e.g.,
// $FG_ROOT/Airports/apt.dat.gz for the 'apt' type).
// Also compute the total size of all these files (in bytes), which is useful
// for progress information.
// The result is stored in the datFilesInfo field.
void NavDataCache::NavDataCachePrivate::findDatFiles(
NavDataCache::DatFileType datFileType)
{
NavDataCache::DatFilesGroupInfo result;
result.datFileType = datFileType;
result.totalSize = 0;
// we don't always add FG_ROOT/Scenery to the path list. But if it exists,
// we want to pick up NavData files from it, since we have shipped
// scenery (for BIKF) which uses newer data than the default files
// in Airports/
auto paths = globals->get_fg_scenery();
const auto fgrootScenery = globals->get_fg_root() / "Scenery";
if (fgrootScenery.exists()) {
auto it = std::find(paths.begin(), paths.end(), fgrootScenery);
if (it == paths.end()) {
paths.push_back(fgrootScenery);
}
}
for (const auto& path: paths) {
if (! path.isDir()) {
SG_LOG(SG_NAVCACHE, SG_WARN, path <<
": given as a scenery path, but is not a directory");
continue;
}
const SGPath datFilesDir =
path / "NavData" / NavDataCache::datTypeStr[datFileType];
if (datFilesDir.isDir()) {
// Deterministic because the return value of simgear::Dir::children() is
// already sorted
const PathList files = simgear::Dir(datFilesDir).children(
simgear::Dir::TYPE_FILE | simgear::Dir::NO_DOT_OR_DOTDOT);
for (const auto& f : files) {
const std::string name = f.file();
if (simgear::strutils::ends_with(name, ".dat") ||
simgear::strutils::ends_with(name, ".dat.gz")) {
result.paths.push_back(f);
result.totalSize += f.sizeInBytes();
}
}
}
} // of loop over the list of scenery paths
// Add the default file (e.g., $FG_ROOT/Airports/apt.dat.gz), at least for
// now
SGPath defaultDatFile(globals->get_fg_root());
defaultDatFile.append(NavDataCache::defaultDatFile[datFileType]);
if ((result.paths.empty() || result.paths.back() != defaultDatFile) &&
defaultDatFile.isFile()) {
result.paths.push_back(defaultDatFile);
result.totalSize += defaultDatFile.sizeInBytes();
}
datFilesInfo[datFileType] = result;
}
// Compare:
// - the list of dat files given by 'datFilesGroupInfo';
// - the list obtained from the record with key '<type>.dat files' of the
// NavDataCache 'properties' table, where <type> is one of 'apt', 'metar',
// 'fix', 'poi', etc..
//
// This comparison is sensitive to the number and order of the files,
// their respective SGPath::realpath() and SGPath::modTime().
bool NavDataCache::NavDataCachePrivate::areDatFilesModified(
NavDataCache::DatFileType datFileType,
bool verbose)
{
// 'apt' or 'metar' or 'fix' or...
const NavDataCache::DatFilesGroupInfo& datFilesGroupInfo =
datFilesInfo[datFileType];
const string datTypeStr =
NavDataCache::datTypeStr[datFileType];
const string_list cachedFiles = outer->readOrderedStringListProperty(
datTypeStr + ".dat files", SGPath::pathListSep);
const PathList& datFiles = datFilesGroupInfo.paths;
PathList::const_iterator datFilesIt = datFiles.begin();
string_list::const_iterator cachedFilesIt = cachedFiles.begin();
// Same logic as in NavDataCachePrivate::isCachedFileModified()
sgDebugPriority logLevel = verbose ? SG_WARN : SG_DEBUG;
if (cachedFilesIt == cachedFiles.end() && datFilesIt != datFiles.end()) {
SG_LOG(SG_NAVCACHE, logLevel,
"NavCache: rebuild required for " << datTypeStr << ".dat files "
"(no file in cache, but " << datFiles.size() << " such file" <<
(datFiles.size() > 1 ? "s" : "") << " found in scenery paths)");
return true;
}
while (datFilesIt != datFiles.end()) {
const SGPath& path = *(datFilesIt++);
if (!path.exists()) {
throw sg_exception(
"NavCache: non-existent file '" + path.utf8Str() + "'",
string("NavDataCache::NavDataCachePrivate::areDatFilesModified()"));
}
if (cachedFilesIt == cachedFiles.end()) {
SG_LOG(SG_NAVCACHE, logLevel,
"NavCache: rebuild required for " << datTypeStr << ".dat files "
"(less files in cache than in scenery paths)");
return true;
} else {
string cachedFile = *(cachedFilesIt++);
string fileOnDisk = path.realpath().utf8Str();
if (cachedFile != fileOnDisk || isCachedFileModified(path, verbose)) {
// isCachedFileModified() does all the logging, so we only have to
// tell what is happening in case that method was not called.
if (cachedFile != fileOnDisk) {
SG_LOG(SG_NAVCACHE, logLevel,
"NavCache: rebuild required because '" << cachedFile <<
"' (in cache) != '" << fileOnDisk << "' (on disk)");
}
return true;
}
}
} // of loop over the elements of 'datFiles'
if (cachedFilesIt != cachedFiles.end()) {
SG_LOG(SG_NAVCACHE, logLevel,
"NavCache: rebuild required for " << datTypeStr << ".dat files "
"(more files in cache than in scenery paths)");
return true;
}
SG_LOG(SG_NAVCACHE, SG_DEBUG,
"NavCache: no rebuild required for " << datTypeStr << ".dat files");
return false;
}
// NavDataCache's static member variables
static NavDataCache* static_instance = NULL;
const string NavDataCache::datTypeStr[] = {
string("apt"),
string("metar"),
string("awy"),
string("nav"),
string("fix"),
string("poi"),
string("carrier"),
string("TACAN_freq")
};
const string NavDataCache::defaultDatFile[] = {
string("Airports/apt.dat.gz"),
string("Airports/metar.dat.gz"),
string("Navaids/awy.dat.gz"),
string("Navaids/nav.dat.gz"),
string("Navaids/fix.dat.gz"),
string("Navaids/poi.dat.gz"),
string("Navaids/carrier.dat.gz"),
string("Navaids/TACAN_freq.dat.gz")
};
NavDataCache::NavDataCache()
{
const int MAX_TRIES = 3;
SGPath homePath(globals->get_fg_home());
std::ostringstream os;
string_list versionParts = simgear::strutils::split(VERSION, ".");
if (versionParts.size() < 2) {
os << "navdata.cache";
} else {
os << "navdata_" << versionParts[0] << "_" << versionParts[1] << ".cache";
}
// permit additional DB connections from the same process
sqlite3_config(SQLITE_CONFIG_MULTITHREAD);
for (int t=0; t < MAX_TRIES; ++t) {
SGPath cachePath = homePath / os.str();
try {
d.reset(new NavDataCachePrivate(cachePath, this));
d->init();
//d->checkCacheFile();
// reached this point with no exception, success
break;
} catch (sg_exception& e) {
SG_LOG(SG_NAVCACHE, t == 0 ? SG_WARN : SG_ALERT, "NavCache: init failed:" << e.what()
<< " (attempt " << t << ")");
if (t == (MAX_TRIES - 1)) {
// final attempt still failed, we are busted
flightgear::fatalMessageBoxThenExit(
"Unable to open navigation cache",
std::string("The navigation data cache could not be opened:")
+ e.getMessage(), e.getOrigin());
}
d.reset();
// only wipe the existing if not readonly
if (cachePath.exists() && !fgGetBool("/sim/fghome-readonly", false)) {
bool ok = cachePath.remove();
if (!ok) {
SG_LOG(SG_NAVCACHE, SG_ALERT, "NavCache: failed to remove previous cache file");
flightgear::fatalMessageBoxThenExit(
"Unable to re-create navigation cache",
"Attempting to remove the old cache failed.",
"Location: " + cachePath.utf8Str());
}
}
}
} // of retry loop
double RADIUS_EARTH_M = 7000 * 1000.0; // 7000km is plenty
SGVec3d earthExtent(RADIUS_EARTH_M, RADIUS_EARTH_M, RADIUS_EARTH_M);
Octree::global_spatialOctree =
new Octree::Branch(SGBox<double>(-earthExtent, earthExtent), 1);
// Update d->aptDatFilesInfo, d->metarDatPath, d->navDatPath, etc.
updateListsOfDatFiles();
}
NavDataCache::~NavDataCache()
{
assert(static_instance == this);
static_instance = nullptr;
d.reset();
// ensure we wip the airports cache too, or we'll get out
// of sync during tests
FGAirport::clearAirportsCache();
}
NavDataCache* NavDataCache::createInstance()
{
assert(static_instance == nullptr);
static_instance = new NavDataCache;
return static_instance;
}
NavDataCache* NavDataCache::instance()
{
return static_instance;
}
// Update the lists of dat files used for NavCache freshness checking and
// rebuilding.
void NavDataCache::updateListsOfDatFiles() {
// All $scenery_path/NavData/apt/*.dat[.gz] files found inside scenery
// paths, plus $FG_ROOT/Airports/apt.dat.gz (order matters).
d->findDatFiles(DATFILETYPE_APT);
// All $scenery_path/NavData/{nav,fix}/*.dat[.gz] files found inside scenery
// paths, plus $FG_ROOT/Navaids/{nav,fix}.dat.gz (order matters).
d->findDatFiles(DATFILETYPE_NAV);
d->findDatFiles(DATFILETYPE_FIX);
// These ones are still managed the "old" way (no search through scenery
// paths).
d->metarDatPath = SGPath(globals->get_fg_root());
d->metarDatPath.append("Airports/metar.dat.gz");
d->poiDatPath = SGPath(globals->get_fg_root());
d->poiDatPath.append("Navaids/poi.dat.gz");
d->carrierDatPath = SGPath(globals->get_fg_root());
d->carrierDatPath.append("Navaids/carrier_nav.dat.gz");
d->airwayDatPath = SGPath(globals->get_fg_root());
d->airwayDatPath.append("Navaids/awy.dat.gz");
}
const NavDataCache::DatFilesGroupInfo&
NavDataCache::getDatFilesInfo(DatFileType datFileType) const
{
auto iter = d->datFilesInfo.find(datFileType);
if (iter == d->datFilesInfo.end()) {
throw sg_error("NavCache: requesting info about the list of " +
datTypeStr[datFileType] + " dat files, however this is not "
"implemented yet!");
}
return iter->second;
}
bool NavDataCache::isRebuildRequired()
{
if (d->readOnly) {
return false;
}
if (flightgear::Options::sharedInstance()->isOptionSet("restore-defaults")) {
SG_LOG(SG_NAVCACHE, SG_INFO, "NavCache: restore-defaults requested, will rebuild cache");
return true;
}
if (d->areDatFilesModified(DATFILETYPE_APT, true) ||
d->isCachedFileModified(d->metarDatPath, true) ||
d->areDatFilesModified(DATFILETYPE_NAV, true) ||
d->areDatFilesModified(DATFILETYPE_FIX, true) ||
d->isCachedFileModified(d->carrierDatPath, true) ||
// since POI loading is disabled on Windows, don't check for it
// this caused: https://code.google.com/p/flightgear-bugs/issues/detail?id=1227
#ifndef SG_WINDOWS
d->isCachedFileModified(d->poiDatPath, true) ||
#endif
d->isCachedFileModified(d->airwayDatPath, true))
{
SG_LOG(SG_NAVCACHE, SG_INFO, "NavCache: main cache rebuild required");
return true;
}
SG_LOG(SG_NAVCACHE, SG_INFO, "NavCache: no main cache rebuild required");
return false;
}
#if defined(SG_WINDOWS)
static HANDLE static_fgNavCacheRebuildMutex = nullptr;
#else
const std::string static_rebuildLockFile = "fgfs_cache_rebuild.lock";
static int static_rebuildLockFileFd = -1;
#endif
enum RebuildLockStatus {
RebuildLockFailed = 0,
RebuildLockAlreadyLocked,
RebuildLockOk
};
RebuildLockStatus accquireRebuildLock()
{
#if defined(SG_WINDOWS)
if (static_fgNavCacheRebuildMutex == nullptr) {
// avoid multiple copies racing on the nav-cache build
static_fgNavCacheRebuildMutex = CreateMutexA(nullptr, FALSE, "org.flightgear.fgfs.rebuild-navcache");
if (static_fgNavCacheRebuildMutex == nullptr) {
SG_LOG(SG_IO, SG_ALERT, "Failed to create NavCache rebuild mutex");
return RebuildLockFailed;
}
if (GetLastError() == ERROR_ALREADY_EXISTS) {
return RebuildLockAlreadyLocked;
}
// accquire the mutex, so that other processes can check the status.
const int result = WaitForSingleObject(static_fgNavCacheRebuildMutex, 100);
if (result != WAIT_OBJECT_0) {
SG_LOG(SG_IO, SG_ALERT, "Failed to lock NavCache rebuild mutex:" << GetLastError());
return RebuildLockFailed;
}
}
#else
SGPath lockPath(globals->get_fg_home(), static_rebuildLockFile);
std::string ps = lockPath.utf8Str();
static_rebuildLockFileFd = ::open(ps.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (static_rebuildLockFileFd < 0) {
SG_LOG(SG_IO, SG_ALERT, "Failed to create rebuild lock file (" << lockPath << "):" << simgear::strutils::error_string(errno));
return RebuildLockFailed;
}
int err = ::flock(static_rebuildLockFileFd, LOCK_EX | LOCK_NB);
if (err < 0) {
if (errno == EWOULDBLOCK) {
return RebuildLockAlreadyLocked;
}
SG_LOG(SG_IO, SG_ALERT, "Failed to lock file (" << lockPath << "):" << simgear::strutils::error_string(errno));
return RebuildLockFailed;
}
#endif
return RebuildLockOk;
}
static void releaseRebuildLock()
{
#if defined(SG_WINDOWS)
ReleaseMutex(static_fgNavCacheRebuildMutex);
#else
int err = ::flock(static_rebuildLockFileFd, LOCK_UN);
if (err < 0) {
SG_LOG(SG_IO, SG_ALERT, "Failed to unlock rebuild file:" << simgear::strutils::error_string(errno));
}
::close(static_rebuildLockFileFd);
SGPath lockPath(globals->get_fg_home(), static_rebuildLockFile);
lockPath.remove();
#endif
}
NavDataCache::RebuildPhase NavDataCache::rebuild()
{
if (!d->rebuilder.get()) {
auto r = accquireRebuildLock();
if (r == RebuildLockAlreadyLocked) {
flightgear::fatalMessageBoxThenExit("Multiple copies of Flightgear initializing",
"Multiple copies of FlightGear are trying to initialise the same navigation database. "
"This means something has gone badly wrong: please report this error.");
} else if (r == RebuildLockFailed) {
flightgear::fatalMessageBoxThenExit("Multiple copies of Flightgear initializing",
"Failed to initialise NavCache rebuild protection");
}
d->rebuilder.reset(new RebuildThread(this));
d->rebuilder->start();
}
// poll the rebuild thread
RebuildPhase phase = d->rebuilder->currentPhase();
if (phase == REBUILD_DONE) {
d->rebuilder.reset(); // all done!
releaseRebuildLock();
}
return phase;
}
bool NavDataCache::isAnotherProcessRebuilding()
{
#if defined(SG_WINDOWS)
if (!static_fgNavCacheRebuildMutex) {
static_fgNavCacheRebuildMutex = OpenMutexA(SYNCHRONIZE, FALSE, "org.flightgear.fgfs.rebuild-navcache");
if (!static_fgNavCacheRebuildMutex) {
// this is the common case: no other fgfs.exe is doing a rebuild, so
// the mutex does not exist. Simple, we are done
if (GetLastError() == ERROR_FILE_NOT_FOUND) {
return false;
}
flightgear::fatalMessageBoxThenExit("Multiple copies of Flightgear initializing",
"Unable to check if other copies of FlightGear are initializing. "
"Please report this error.");
}
}
// poll the named mutex
auto result = WaitForSingleObject(static_fgNavCacheRebuildMutex, 0);
if (result == WAIT_OBJECT_0) {
// we accquired it, release it and we're done
// (there could be multiple read-only copies in this situation)
ReleaseMutex(static_fgNavCacheRebuildMutex);
CloseHandle(static_fgNavCacheRebuildMutex);
return false;
}
// failed to accquire the mutex, so assume another FGFS.exe is rebuilding,
// the GU should wait.
return true;
#else
SGPath lockPath(globals->get_fg_home(), static_rebuildLockFile);
std::string ps = lockPath.utf8Str();
static_rebuildLockFileFd = ::open(ps.c_str(), O_RDONLY, 0644);
if (static_rebuildLockFileFd < 0) {
if (errno == ENOENT) {
return false; // no such file, easy
}
SG_LOG(SG_IO, SG_ALERT, "Error opening lock file:" << simgear::strutils::error_string(errno));
return false;
}
int err = ::flock(static_rebuildLockFileFd, LOCK_EX | LOCK_NB);
if (err < 0) {
if (errno == EWOULDBLOCK) {
return true;
}
SG_LOG(SG_IO, SG_ALERT, "Error querying lock file:" << simgear::strutils::error_string(errno));
return false;
}
// release it again, so any *other* waiting copies can also succeed
::flock(static_rebuildLockFileFd, LOCK_UN);
return false;
#endif
}
unsigned int NavDataCache::rebuildPhaseCompletionPercentage() const
{
if (!d->rebuilder.get()) {
return 0;
}
return d->rebuilder->completionPercent();
}
void NavDataCache::setRebuildPhaseProgress(RebuildPhase ph, unsigned int percent)
{
if (!d->rebuilder.get()) {
return;
}
d->rebuilder->setProgress(ph, percent);
}
void NavDataCache::loadDatFiles(
DatFileType type,
std::function<void(const SGPath&, std::size_t, std::size_t)> loader)
{
SGTimeStamp st;
string typeStr = datTypeStr[type];
string_list datFiles;
NavDataCache::DatFilesGroupInfo datFilesInfo = getDatFilesInfo(type);
const PathList datPaths = datFilesInfo.paths;
std::size_t bytesReadSoFar = 0;
st.stamp();
for (PathList::const_iterator it = datPaths.begin();
it != datPaths.end(); it++) {
string path = it->realpath().utf8Str();
datFiles.push_back(path);
SG_LOG(SG_GENERAL, SG_INFO,
"Loading " + typeStr + ".dat file: '" << path << "'");
loader(*it, bytesReadSoFar, datFilesInfo.totalSize);
bytesReadSoFar += it->sizeInBytes();
stampCacheFile(*it); // this uses the realpath() of the file
}
// Store the list of .dat files we have loaded
writeOrderedStringListProperty(typeStr + ".dat files", datFiles,
SGPath::pathListSep);
SG_LOG(SG_NAVCACHE, SG_INFO,
typeStr + ".dat files load took: " <<
st.elapsedMSec());
}
void NavDataCache::doRebuild()
{
rebuildInProgress = true;
try {
d->close(); // completely close the sqlite object
d->path.remove(); // remove the file on disk
d->init(); // start again from scratch
// initialise the root octree node
d->runSQL("INSERT INTO octree (rowid, children) VALUES (1, 0)");
SGTimeStamp st;
{
Transaction txn(this);
APTLoader aptLoader;
FixesLoader fixesLoader;
NavLoader navLoader;
using namespace std::placeholders; // for _1, _2, _3...
loadDatFiles(DATFILETYPE_APT,
std::bind(&APTLoader::readAptDatFile, &aptLoader, _1, _2, _3));
st.stamp();
setRebuildPhaseProgress(REBUILD_UNKNOWN);
SG_LOG(SG_NAVCACHE, SG_DEBUG, "Processing airports");
aptLoader.loadAirports(); // load airport data into the NavCache
SG_LOG(SG_NAVCACHE, SG_INFO,
"processing airports took:" <<
st.elapsedMSec());
setRebuildPhaseProgress(REBUILD_UNKNOWN);
metarDataLoad(d->metarDatPath);
stampCacheFile(d->metarDatPath);
loadDatFiles(DATFILETYPE_FIX,
std::bind(&FixesLoader::loadFixes, &fixesLoader, _1, _2, _3));
loadDatFiles(DATFILETYPE_NAV,
std::bind(&NavLoader::loadNav, &navLoader, _1, _2, _3));
setRebuildPhaseProgress(REBUILD_UNKNOWN);
st.stamp();
txn.commit();
SG_LOG(SG_NAVCACHE, SG_INFO, "stage 1 commit took:" << st.elapsedMSec());
}
#ifdef SG_WINDOWS
SG_LOG(SG_NAVCACHE, SG_MANDATORY_INFO, "SKIPPING POI load on Windows");
#else
{
Transaction txn(this);
st.stamp();
poiDBInit(d->poiDatPath);
stampCacheFile(d->poiDatPath);
SG_LOG(SG_NAVCACHE, SG_INFO, "poi.dat load took:" << st.elapsedMSec());
setRebuildPhaseProgress(REBUILD_UNKNOWN);
st.stamp();
txn.commit();
SG_LOG(SG_NAVCACHE, SG_INFO, "POI commit took:" << st.elapsedMSec());
}
#endif
{
Transaction txn(this);
NavLoader navLoader;
navLoader.loadCarrierNav(d->carrierDatPath);
stampCacheFile(d->carrierDatPath);
st.stamp();
Airway::loadAWYDat(d->airwayDatPath);
stampCacheFile(d->airwayDatPath);
SG_LOG(SG_NAVCACHE, SG_INFO, "awy.dat load took:" << st.elapsedMSec());
d->flushDeferredOctreeUpdates();
string sceneryPaths = SGPath::join(globals->get_fg_scenery(), ";");
writeStringProperty("scenery_paths", sceneryPaths);
st.stamp();
txn.commit();
SG_LOG(SG_NAVCACHE, SG_INFO, "final commit took:" << st.elapsedMSec());
}
} catch (sg_exception& e) {
SG_LOG(SG_NAVCACHE, SG_ALERT, "caught exception rebuilding navCache:" << e.what());
}
rebuildInProgress = false;
}
int NavDataCache::readIntProperty(const string& key)
{
sqlite_bind_stdstring(d->readPropertyQuery, 1, key);
int result = 0;
if (d->execSelect(d->readPropertyQuery)) {
result = sqlite3_column_int(d->readPropertyQuery, 0);
} else {
SG_LOG(SG_NAVCACHE, SG_WARN, "readIntProperty: unknown:" << key);
}
d->reset(d->readPropertyQuery);
return result;
}
double NavDataCache::readDoubleProperty(const string& key)
{
sqlite_bind_stdstring(d->readPropertyQuery, 1, key);
double result = 0.0;
if (d->execSelect(d->readPropertyQuery)) {
result = sqlite3_column_double(d->readPropertyQuery, 0);
} else {
SG_LOG(SG_NAVCACHE, SG_WARN, "readDoubleProperty: unknown:" << key);
}
d->reset(d->readPropertyQuery);
return result;
}
string NavDataCache::readStringProperty(const string& key)
{
sqlite_bind_stdstring(d->readPropertyQuery, 1, key);
string result;
if (d->execSelect(d->readPropertyQuery)) {
result = (char*) sqlite3_column_text(d->readPropertyQuery, 0);
} else {
SG_LOG(SG_NAVCACHE, SG_WARN, "readStringProperty: unknown:" << key);
}
d->reset(d->readPropertyQuery);
return result;
}
void NavDataCache::writeIntProperty(const string& key, int value)
{
d->writeIntProperty(key, value);
}
void NavDataCache::writeStringProperty(const string& key, const string& value)
{
if (!isReadOnly()) {
sqlite_bind_stdstring(d->clearProperty, 1, key);
d->execUpdate(d->clearProperty);
sqlite_bind_stdstring(d->writePropertyQuery, 1, key);
sqlite_bind_stdstring(d->writePropertyQuery, 2, value);
d->execUpdate(d->writePropertyQuery);
}
}
void NavDataCache::writeDoubleProperty(const string& key, const double& value)
{
if (!isReadOnly()) {
sqlite_bind_stdstring(d->clearProperty, 1, key);
d->execUpdate(d->clearProperty);
sqlite_bind_stdstring(d->writePropertyQuery, 1, key);
sqlite3_bind_double(d->writePropertyQuery, 2, value);
d->execUpdate(d->writePropertyQuery);
}
}
string_list NavDataCache::readStringListProperty(const string& key)
{
sqlite_bind_stdstring(d->readPropertyQuery, 1, key);
string_list result;
while (d->stepSelect(d->readPropertyQuery)) {
result.push_back((char*) sqlite3_column_text(d->readPropertyQuery, 0));
}
d->reset(d->readPropertyQuery);
return result;
}
void NavDataCache::writeStringListProperty(const string& key, const string_list& values)
{
if (!isReadOnly()) {
sqlite_bind_stdstring(d->clearProperty, 1, key);
d->execUpdate(d->clearProperty);
for (string value : values) {
sqlite_bind_stdstring(d->writePropertyMulti, 1, key);
sqlite_bind_stdstring(d->writePropertyMulti, 2, value);
d->execInsert(d->writePropertyMulti);
}
}
}
string_list NavDataCache::readOrderedStringListProperty(const string& key,
const char* separator)
{
string_list l = simgear::strutils::split(readStringProperty(key), separator);
assert(!l.empty());
// See comment in writeOrderedStringListProperty()
l.pop_back();
return l;
}
void NavDataCache::writeOrderedStringListProperty(const string& key,
const string_list& values,
const char* separator)
{
string s;
// If values == {a, b, c}, we'll write this string to the property:
//
// a + separator + b + separator + c + separator
//
// When this is split around 'separator' after reading back the property
// value, we'll obtain an extraneous empty element after 'c' that should be
// discarded. This last separator allows correct write-read round-trip when
// 'values' is empty.
if (!values.empty()) {
s = simgear::strutils::join(values, separator) + string(separator);
}
writeStringProperty(key, s);
}
bool NavDataCache::isCachedFileModified(const SGPath& path) const
{
return d->isCachedFileModified(path, false);
}
void NavDataCache::stampCacheFile(const SGPath& path)
{
if (!isReadOnly()){
sqlite_bind_temp_stdstring(d->stampFileCache, 1, path.realpath().utf8Str());
sqlite3_bind_int64(d->stampFileCache, 2, path.modTime());
d->execInsert(d->stampFileCache);
}
}
void NavDataCache::beginTransaction()
{
if (d->transactionLevel == 0) {
d->transactionAborted = false;
d->stepSelect(d->beginTransactionStmt);
sqlite3_reset(d->beginTransactionStmt);
}
++d->transactionLevel;
}
void NavDataCache::commitTransaction()
{
assert(d->transactionLevel > 0);
if (--d->transactionLevel == 0) {
// if a nested transaction aborted, we might end up here, but must
// still abort the entire transaction. That's bad, but safer than
// committing.
sqlite3_stmt_ptr q = d->transactionAborted ? d->rollbackTransactionStmt : d->commitTransactionStmt;
int retries = 0;
int result;
while (retries < MAX_RETRIES) {
result = sqlite3_step(q);
if (result == SQLITE_DONE) {
break;
}
// see http://www.sqlite.org/c3ref/get_autocommit.html for a hint
// what's going on here: autocommit in inactive inside BEGIN, so if
// it's active, the DB was rolled-back
if (sqlite3_get_autocommit(d->db)) {
SG_LOG(SG_NAVCACHE, SG_ALERT, "commit: was rolled back!" << retries);
flightgear::sentryReportException("DB commit was rolled back");
d->transactionAborted = true;
break;
}
if (result != SQLITE_BUSY) {
break;
}
SGTimeStamp::sleepForMSec(++retries * 100);
SG_LOG(SG_NAVCACHE, SG_ALERT, "NavCache contention on commit, will retry:" << retries);
} // of retry loop for DB busy
string errMsg;
if (result != SQLITE_DONE) {
errMsg = sqlite3_errmsg(d->db);
flightgear::sentryReportException("DB error:" + errMsg + " running " + std::string{sqlite3_sql(q)});
SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite error:" << errMsg << " for " << result
<< " while running:\n\t" << sqlite3_sql(q));
}
sqlite3_reset(q);
}
}
void NavDataCache::abortTransaction()
{
SG_LOG(SG_NAVCACHE, SG_WARN, "NavCache: aborting transaction");
flightgear::sentryReportException("DB aborting transactino");
assert(d->transactionLevel > 0);
if (--d->transactionLevel == 0) {
d->stepSelect(d->rollbackTransactionStmt);
sqlite3_reset(d->rollbackTransactionStmt);
}
d->transactionAborted = true;
}
void NavDataCache::clearDynamicPositioneds()
{
std::for_each(d->cache.begin(), d->cache.end(), [](PositionedCache::value_type& v) {
if (v.second->type() == FGPositioned::MOBILE_TACAN) {
auto mobile = fgpositioned_cast<FGMobileNavRecord>(v.second);
mobile->clearVehicle();
}
});
}
FGPositionedRef NavDataCache::loadById(PositionedID rowid)
{
if (rowid < 1) {
return NULL;
}
if (!d) return NULL;
PositionedCache::iterator it = d->cache.find(rowid);
if (it != d->cache.end()) {
d->cacheHits++;
return it->second; // cache it
}
sqlite3_int64 aptId;
FGPositionedRef pos = d->loadById(rowid, aptId);
if (rebuildInProgress) {
// Do not cache and apply ILS adjustment while rebuilding the cache.
// The adjustment process requires all ILS navaids to be present,
// which is not true during the cache rebuild.
return pos;
}
d->cache.insert(it, PositionedCache::value_type(rowid, pos));
d->cacheMisses++;
// when we loaded an ILS, we must apply per-airport changes
if ((pos->type() == FGPositioned::ILS) && (aptId > 0)) {
FGAirport* apt = FGPositioned::loadById<FGAirport>(aptId);
apt->validateILSData();
}
return pos;
}
PositionedID NavDataCache::insertAirport(FGPositioned::Type ty, const string& ident,
const string& name)
{
// airports have their pos computed based on the avergae runway centres
// so the pos isn't available immediately. Pass a dummy pos and avoid
// doing spatial indexing until later
sqlite3_int64 rowId = d->insertPositioned(ty, ident, name, SGGeod(),
0 /* airport */,
false /* spatial index */);
sqlite3_bind_int64(d->insertAirport, 1, rowId);
d->execInsert(d->insertAirport);
return rowId;
}
void NavDataCache::updatePosition(PositionedID item, const SGGeod &pos)
{
if (d->cache.find(item) != d->cache.end()) {
SG_LOG(SG_NAVCACHE, SG_DEBUG, "updating position of an item in the cache");
d->cache[item]->modifyPosition(pos);
}
SGVec3d cartPos(SGVec3d::fromGeod(pos));
sqlite3_bind_int(d->setAirportPos, 1, item);
sqlite3_bind_double(d->setAirportPos, 2, pos.getLongitudeDeg());
sqlite3_bind_double(d->setAirportPos, 3, pos.getLatitudeDeg());
sqlite3_bind_double(d->setAirportPos, 4, pos.getElevationM());
// bug 905; the octree leaf may change here, but the leaf may already be
// loaded, and caching its children. (Either the old or new leaf!). Worse,
// we may be called here as a result of loading one of those leaf's children.
// instead of dealing with all those possibilites, such as modifying
// the in-memory leaf's STL child container, we simply leave the runtime
// structures alone. This is fine providing items do no move very far, since
// all the spatial searches ultimately use the items' real cartesian position,
// which was updated above.
Octree::Leaf* octreeLeaf = Octree::global_spatialOctree->findLeafForPos(cartPos);
sqlite3_bind_int64(d->setAirportPos, 5, octreeLeaf->guid());
sqlite3_bind_double(d->setAirportPos, 6, cartPos.x());
sqlite3_bind_double(d->setAirportPos, 7, cartPos.y());
sqlite3_bind_double(d->setAirportPos, 8, cartPos.z());
d->execUpdate(d->setAirportPos);
}
void NavDataCache::insertTower(PositionedID airportId, const SGGeod& pos)
{
d->insertPositioned(FGPositioned::TOWER, string(), string(),
pos, airportId, true /* spatial index */);
}
PositionedID
NavDataCache::insertRunway(FGPositioned::Type ty, const string& ident,
const SGGeod& pos, PositionedID apt,
double heading, double length, double width, double displacedThreshold,
double stopway, int markings, int approach, int tdz, int reil,
int surfaceCode, int shoulder_code, float smoothness, int center_lights,
int edge_lights, int distance_remaining)
{
// only runways are spatially indexed; don't bother indexing taxiways
// or pavements
bool spatialIndex = ( ty == FGPositioned::RUNWAY || ty == FGPositioned::HELIPAD);
sqlite3_int64 rowId = d->insertPositioned(ty, cleanRunwayNo(ident), "", pos, apt,
spatialIndex);
sqlite3_bind_int64(d->insertRunway, 1, rowId);
sqlite3_bind_double(d->insertRunway, 2, heading);
sqlite3_bind_double(d->insertRunway, 3, length);
sqlite3_bind_double(d->insertRunway, 4, width);
sqlite3_bind_int(d->insertRunway, 5, surfaceCode);
sqlite3_bind_double(d->insertRunway, 6, displacedThreshold);
sqlite3_bind_double(d->insertRunway, 7, stopway);
sqlite3_bind_int(d->insertRunway, 8, markings);
sqlite3_bind_int(d->insertRunway, 9, approach);
sqlite3_bind_int(d->insertRunway, 10, tdz);
sqlite3_bind_int(d->insertRunway, 11, reil);
sqlite3_bind_int(d->insertRunway, 12, shoulder_code);
sqlite3_bind_double(d->insertRunway, 13, smoothness);
sqlite3_bind_int(d->insertRunway, 14, center_lights);
sqlite3_bind_int(d->insertRunway, 15, edge_lights);
sqlite3_bind_int(d->insertRunway, 116, distance_remaining);
return d->execInsert(d->insertRunway);
}
PositionedID
NavDataCache::insertRunway(FGPositioned::Type ty, const string& ident,
const SGGeod& pos, PositionedID apt,
double heading, double length, double width, double displacedThreshold,
double stopway, int surfaceCode)
{
return insertRunway(ty, ident, pos, apt,
heading, length, width, displacedThreshold,
stopway, 0, 0, 0, 0,
surfaceCode, 0, 0.0f, 0, 0, 0);
}
void NavDataCache::setRunwayReciprocal(PositionedID runway, PositionedID recip)
{
sqlite3_bind_int64(d->setRunwayReciprocal, 1, runway);
sqlite3_bind_int64(d->setRunwayReciprocal, 2, recip);
d->execUpdate(d->setRunwayReciprocal);
// and the opposite direction too!
sqlite3_bind_int64(d->setRunwayReciprocal, 2, runway);
sqlite3_bind_int64(d->setRunwayReciprocal, 1, recip);
d->execUpdate(d->setRunwayReciprocal);
}
void NavDataCache::setRunwayILS(PositionedID runway, PositionedID ils)
{
sqlite3_bind_int64(d->setRunwayILS, 1, runway);
sqlite3_bind_int64(d->setRunwayILS, 2, ils);
d->execUpdate(d->setRunwayILS);
// and the in-memory one
if (d->cache.find(runway) != d->cache.end()) {
FGRunway* instance = (FGRunway*) d->cache[runway].ptr();
instance->setILS(ils);
}
}
PositionedID
NavDataCache::insertNavaid(FGPositioned::Type ty, const string& ident,
const string& name, const SGGeod& pos,
int freq, int range, double multiuse,
PositionedID apt, PositionedID runway)
{
bool spatialIndex = true;
if (ty == FGPositioned::MOBILE_TACAN) {
spatialIndex = false;
}
sqlite3_int64 rowId = d->insertPositioned(ty, ident, name, pos, apt,
spatialIndex);
sqlite3_bind_int64(d->insertNavaid, 1, rowId);
sqlite3_bind_int(d->insertNavaid, 2, freq);
sqlite3_bind_int(d->insertNavaid, 3, range);
sqlite3_bind_double(d->insertNavaid, 4, multiuse);
sqlite3_bind_int64(d->insertNavaid, 5, runway);
sqlite3_bind_int64(d->insertNavaid, 6, 0);
return d->execInsert(d->insertNavaid);
}
void NavDataCache::setNavaidColocated(PositionedID navaid, PositionedID colocatedDME)
{
// Update DB entries...
sqlite3_bind_int64(d->setNavaidColocated, 1, navaid);
sqlite3_bind_int64(d->setNavaidColocated, 2, colocatedDME);
d->execUpdate(d->setNavaidColocated);
// ...and the in-memory copy of the navrecord
if (d->cache.find(navaid) != d->cache.end()) {
FGNavRecord* rec = (FGNavRecord*) d->cache[navaid].get();
rec->setColocatedDME(colocatedDME);
}
}
PositionedID NavDataCache::insertCommStation(FGPositioned::Type ty,
const string& name, const SGGeod& pos, int freq, int range,
PositionedID apt)
{
sqlite3_int64 rowId = d->insertPositioned(ty, "", name, pos, apt, true);
sqlite3_bind_int64(d->insertCommStation, 1, rowId);
sqlite3_bind_int(d->insertCommStation, 2, freq);
sqlite3_bind_int(d->insertCommStation, 3, range);
return d->execInsert(d->insertCommStation);
}
PositionedID NavDataCache::insertFix(const std::string& ident, const SGGeod& aPos)
{
return d->insertPositioned(FGPositioned::FIX, ident, string(), aPos, 0, true);
}
PositionedID NavDataCache::createPOI(FGPositioned::Type ty, const std::string& ident, const SGGeod& aPos)
{
return d->insertPositioned(ty, ident, string(), aPos, 0,
true /* spatial index */);
}
bool NavDataCache::removePOI(FGPositioned::Type ty, const std::string& aIdent)
{
d->removePositionedWithIdent(ty, aIdent);
// should remove from the live cache too?
return true;
}
void NavDataCache::setAirportMetar(const string& icao, bool hasMetar)
{
sqlite_bind_stdstring(d->setAirportMetar, 1, icao);
sqlite3_bind_int(d->setAirportMetar, 2, hasMetar);
d->execUpdate(d->setAirportMetar);
}
//------------------------------------------------------------------------------
FGPositionedList NavDataCache::findAllWithIdent( const string& s,
FGPositioned::Filter* filter,
bool exact )
{
return d->findAllByString(s, "ident", filter, exact);
}
//------------------------------------------------------------------------------
FGPositionedList NavDataCache::findAllWithName( const string& s,
FGPositioned::Filter* filter,
bool exact )
{
return d->findAllByString(s, "name", filter, exact);
}
//------------------------------------------------------------------------------
FGPositionedRef NavDataCache::findClosestWithIdent( const string& aIdent,
const SGGeod& aPos,
FGPositioned::Filter* aFilter )
{
sqlite_bind_stdstring(d->findClosestWithIdent, 1, aIdent);
if (aFilter) {
sqlite3_bind_int(d->findClosestWithIdent, 2, aFilter->minType());
sqlite3_bind_int(d->findClosestWithIdent, 3, aFilter->maxType());
} else { // full type range
sqlite3_bind_int(d->findClosestWithIdent, 2, FGPositioned::INVALID);
sqlite3_bind_int(d->findClosestWithIdent, 3, FGPositioned::LAST_TYPE);
}
SGVec3d cartPos(SGVec3d::fromGeod(aPos));
sqlite3_bind_double(d->findClosestWithIdent, 4, cartPos.x());
sqlite3_bind_double(d->findClosestWithIdent, 5, cartPos.y());
sqlite3_bind_double(d->findClosestWithIdent, 6, cartPos.z());
FGPositionedRef result;
while (d->stepSelect(d->findClosestWithIdent)) {
FGPositionedRef pos = loadById(sqlite3_column_int64(d->findClosestWithIdent, 0));
if (aFilter && !aFilter->pass(pos)) {
continue;
}
result = pos;
break;
}
d->reset(d->findClosestWithIdent);
return result;
}
int NavDataCache::getOctreeBranchChildren(int64_t octreeNodeId)
{
sqlite3_bind_int64(d->getOctreeChildren, 1, octreeNodeId);
if (!d->execSelect(d->getOctreeChildren)) {
// this can occur when in read-only mode: we don't add
// new Octree nodes to the real DB (only in memory),
// but will still call this code speculatively.
// see the early-return just below in defineOctreeNode
return 0;
}
int children = sqlite3_column_int(d->getOctreeChildren, 0);
d->reset(d->getOctreeChildren);
return children;
}
void NavDataCache::defineOctreeNode(Octree::Branch* pr, Octree::Node* nd)
{
if (isReadOnly()) {
return;
}
sqlite3_bind_int64(d->insertOctree, 1, nd->guid());
d->execInsert(d->insertOctree);
#ifdef LAZY_OCTREE_UPDATES
d->deferredOctreeUpdates.insert(pr);
#else
// lowest three bits of node ID are 0..7 index of the child in the parent
int childIndex = nd->guid() & 0x07;
sqlite3_bind_int64(d->updateOctreeChildren, 1, pr->guid());
// mask has bit N set where child N exists
int childMask = 1 << childIndex;
sqlite3_bind_int(d->updateOctreeChildren, 2, childMask);
d->execUpdate(d->updateOctreeChildren);
#endif
}
TypedPositionedVec
NavDataCache::getOctreeLeafChildren(int64_t octreeNodeId)
{
sqlite3_bind_int64(d->getOctreeLeafChildren, 1, octreeNodeId);
TypedPositionedVec r;
while (d->stepSelect(d->getOctreeLeafChildren)) {
FGPositioned::Type ty = static_cast<FGPositioned::Type>
(sqlite3_column_int(d->getOctreeLeafChildren, 1));
r.push_back(std::make_pair(ty,
sqlite3_column_int64(d->getOctreeLeafChildren, 0)));
}
d->reset(d->getOctreeLeafChildren);
return r;
}
/**
* A special purpose helper (used by FGAirport::searchNamesAndIdents) to
* implement the AirportList dialog. It's unfortunate that it needs to reside
* here, but for now it's least ugly solution.
*/
char** NavDataCache::searchAirportNamesAndIdents(const std::string& searchInput)
{
sqlite3_stmt_ptr stmt;
unsigned int numMatches = 0, numAllocated = 16;
string heliport("HELIPORT");
bool heli_p = searchInput.substr(0, heliport.length()) == heliport;
auto pos = searchInput.find(":");
string aFilter((pos != string::npos) ? searchInput.substr(pos+1) : searchInput);
string searchTerm("%" + aFilter + "%");
if (aFilter.empty() && !heli_p) {
stmt = d->getAllAirports;
numAllocated = 4096; // start much larger for all airports
} else {
stmt = d->searchAirports;
sqlite_bind_stdstring(stmt, 1, searchTerm);
if (heli_p) {
sqlite3_bind_int(stmt, 2, FGPositioned::HELIPORT);
sqlite3_bind_int(stmt, 3, FGPositioned::HELIPORT);
}
else {
sqlite3_bind_int(stmt, 2, FGPositioned::AIRPORT);
sqlite3_bind_int(stmt, 3, FGPositioned::SEAPORT);
}
}
char** result = (char**) malloc(sizeof(char*) * numAllocated);
while (d->stepSelect(stmt)) {
if ((numMatches + 1) >= numAllocated) {
numAllocated <<= 1; // double in size!
// reallocate results array
char** nresult = (char**) malloc(sizeof(char*) * numAllocated);
memcpy(nresult, result, sizeof(char*) * numMatches);
free(result);
result = nresult;
}
// nasty code to avoid excessive string copying and allocations.
// We format results as follows (note whitespace!):
// ' name-of-airport-chars (ident)'
// so the total length is:
// 1 + strlen(name) + 4 + strlen(icao) + 1 + 1 (for the null)
// which gives a grand total of 7 + name-length + icao-length.
// note the ident can be three letters (non-ICAO local strip), four
// (default ICAO) or more (extended format ICAO)
int nameLength = sqlite3_column_bytes(stmt, 1);
int icaoLength = sqlite3_column_bytes(stmt, 0);
char* entry = (char*) malloc(7 + nameLength + icaoLength);
char* dst = entry;
*dst++ = ' ';
memcpy(dst, sqlite3_column_text(stmt, 1), nameLength);
dst += nameLength;
*dst++ = ' ';
*dst++ = ' ';
*dst++ = ' ';
*dst++ = '(';
memcpy(dst, sqlite3_column_text(stmt, 0), icaoLength);
dst += icaoLength;
*dst++ = ')';
*dst++ = 0;
result[numMatches++] = entry;
}
result[numMatches] = NULL; // end of list marker
d->reset(stmt);
return result;
}
FGPositionedRef
NavDataCache::findCommByFreq(int freqKhz, const SGGeod& aPos, FGPositioned::Filter* aFilter)
{
sqlite3_bind_int(d->findCommByFreq, 1, freqKhz);
if (aFilter) {
sqlite3_bind_int(d->findCommByFreq, 2, aFilter->minType());
sqlite3_bind_int(d->findCommByFreq, 3, aFilter->maxType());
} else { // full type range
sqlite3_bind_int(d->findCommByFreq, 2, FGPositioned::FREQ_GROUND);
sqlite3_bind_int(d->findCommByFreq, 3, FGPositioned::FREQ_UNICOM);
}
SGVec3d cartPos(SGVec3d::fromGeod(aPos));
sqlite3_bind_double(d->findCommByFreq, 4, cartPos.x());
sqlite3_bind_double(d->findCommByFreq, 5, cartPos.y());
sqlite3_bind_double(d->findCommByFreq, 6, cartPos.z());
FGPositionedRef result;
while (d->execSelect(d->findCommByFreq)) {
FGPositionedRef p = loadById(sqlite3_column_int64(d->findCommByFreq, 0));
if (aFilter && !aFilter->pass(p)) {
continue;
}
result = p;
break;
}
d->reset(d->findCommByFreq);
return result;
}
PositionedIDVec
NavDataCache::findNavaidsByFreq(int freqKhz, const SGGeod& aPos, FGPositioned::Filter* aFilter)
{
sqlite3_bind_int(d->findNavsByFreq, 1, freqKhz);
if (aFilter) {
sqlite3_bind_int(d->findNavsByFreq, 2, aFilter->minType());
sqlite3_bind_int(d->findNavsByFreq, 3, aFilter->maxType());
} else { // full type range
sqlite3_bind_int(d->findNavsByFreq, 2, FGPositioned::NDB);
sqlite3_bind_int(d->findNavsByFreq, 3, FGPositioned::GS);
}
SGVec3d cartPos(SGVec3d::fromGeod(aPos));
sqlite3_bind_double(d->findNavsByFreq, 4, cartPos.x());
sqlite3_bind_double(d->findNavsByFreq, 5, cartPos.y());
sqlite3_bind_double(d->findNavsByFreq, 6, cartPos.z());
return d->selectIds(d->findNavsByFreq);
}
PositionedIDVec
NavDataCache::findNavaidsByFreq(int freqKhz, FGPositioned::Filter* aFilter)
{
sqlite3_bind_int(d->findNavsByFreqNoPos, 1, freqKhz);
if (aFilter) {
sqlite3_bind_int(d->findNavsByFreqNoPos, 2, aFilter->minType());
sqlite3_bind_int(d->findNavsByFreqNoPos, 3, aFilter->maxType());
} else { // full type range
sqlite3_bind_int(d->findNavsByFreqNoPos, 2, FGPositioned::NDB);
sqlite3_bind_int(d->findNavsByFreqNoPos, 3, FGPositioned::GS);
}
return d->selectIds(d->findNavsByFreqNoPos);
}
PositionedIDVec
NavDataCache::airportItemsOfType(PositionedID apt,FGPositioned::Type ty,
FGPositioned::Type maxTy)
{
if (maxTy == FGPositioned::INVALID) {
maxTy = ty; // single-type range
}
sqlite3_bind_int64(d->getAirportItems, 1, apt);
sqlite3_bind_int(d->getAirportItems, 2, ty);
sqlite3_bind_int(d->getAirportItems, 3, maxTy);
return d->selectIds(d->getAirportItems);
}
PositionedID
NavDataCache::airportItemWithIdent(PositionedID apt, FGPositioned::Type ty,
const std::string& ident)
{
sqlite3_bind_int64(d->getAirportItemByIdent, 1, apt);
sqlite_bind_stdstring(d->getAirportItemByIdent, 2, ident);
sqlite3_bind_int(d->getAirportItemByIdent, 3, ty);
PositionedID result = 0;
if (d->execSelect(d->getAirportItemByIdent)) {
result = sqlite3_column_int64(d->getAirportItemByIdent, 0);
}
d->reset(d->getAirportItemByIdent);
return result;
}
AirportRunwayPair
NavDataCache::findAirportRunway(const std::string& aName)
{
if (aName.empty()) {
return AirportRunwayPair();
}
string_list parts = simgear::strutils::split(aName);
if (parts.size() < 2) {
SG_LOG(SG_NAVCACHE, SG_WARN, "findAirportRunway: malformed name:" << aName);
return AirportRunwayPair();
}
AirportRunwayPair result;
sqlite_bind_stdstring(d->findAirportRunway, 1, parts[0]);
const auto cleanedRunway = cleanRunwayNo(parts[1]);
sqlite_bind_stdstring(d->findAirportRunway, 2, cleanedRunway);
if (d->execSelect(d->findAirportRunway)) {
result = AirportRunwayPair(sqlite3_column_int64(d->findAirportRunway, 0),
sqlite3_column_int64(d->findAirportRunway, 1));
} else {
SG_LOG(SG_NAVCACHE, SG_WARN, "findAirportRunway: unknown airport/runway:" << aName);
}
d->reset(d->findAirportRunway);
return result;
}
PositionedID
NavDataCache::findILS(PositionedID airport, const string& aRunway, const string& navIdent)
{
string runway(cleanRunwayNo(aRunway));
sqlite_bind_stdstring(d->findILS, 1, navIdent);
sqlite3_bind_int64(d->findILS, 2, airport);
sqlite_bind_stdstring(d->findILS, 3, runway);
PositionedID result = 0;
if (d->execSelect(d->findILS)) {
result = sqlite3_column_int64(d->findILS, 0);
}
d->reset(d->findILS);
return result;
}
int NavDataCache::findAirway(int network, const string& aName, bool create)
{
assert((network == 1) || (network == 2));
sqlite3_bind_int(d->findAirwayNet, 1, network);
sqlite_bind_stdstring(d->findAirwayNet, 2, aName);
int airway = 0;
if (d->execSelect(d->findAirwayNet)) {
// already exists
airway = sqlite3_column_int(d->findAirwayNet, 0);
} else if (create) {
d->reset(d->insertAirway);
sqlite_bind_stdstring(d->insertAirway, 1, aName);
sqlite3_bind_int(d->insertAirway, 2, network);
airway = d->execInsert(d->insertAirway);
} else {
// doesn't exist but don't create
}
d->reset(d->findAirwayNet);
return airway;
}
int NavDataCache::findAirway(const string& aName)
{
sqlite_bind_stdstring(d->findAirway, 1, aName);
int airway = 0;
if (d->execSelect(d->findAirway)) {
// already exists
airway = sqlite3_column_int(d->findAirway, 0);
}
d->reset(d->findAirway);
return airway;
}
void NavDataCache::insertEdge(int network, int airwayID, PositionedID from, PositionedID to)
{
sqlite3_bind_int(d->insertAirwayEdge, 1, network);
sqlite3_bind_int(d->insertAirwayEdge, 2, airwayID);
sqlite3_bind_int64(d->insertAirwayEdge, 3, from);
sqlite3_bind_int64(d->insertAirwayEdge, 4, to);
d->execInsert(d->insertAirwayEdge);
}
bool NavDataCache::isInAirwayNetwork(int network, PositionedID pos)
{
sqlite3_bind_int(d->isPosInAirway, 1, network);
sqlite3_bind_int64(d->isPosInAirway, 2, pos);
bool ok = d->execSelect(d->isPosInAirway);
d->reset(d->isPosInAirway);
return ok;
}
AirwayEdgeVec NavDataCache::airwayEdgesFrom(int network, PositionedID pos)
{
sqlite3_bind_int(d->airwayEdgesFrom, 1, network);
sqlite3_bind_int64(d->airwayEdgesFrom, 2, pos);
AirwayEdgeVec result;
while (d->stepSelect(d->airwayEdgesFrom)) {
result.push_back(AirwayEdge(
sqlite3_column_int(d->airwayEdgesFrom, 0),
sqlite3_column_int64(d->airwayEdgesFrom, 1)
));
}
d->reset(d->airwayEdgesFrom);
// find bidirectional / backwsards edges
// at present all edges are bidirectional
sqlite3_bind_int(d->airwayEdgesTo, 1, network);
sqlite3_bind_int64(d->airwayEdgesTo, 2, pos);
while (d->stepSelect(d->airwayEdgesTo)) {
result.push_back(AirwayEdge(
sqlite3_column_int(d->airwayEdgesTo, 0),
sqlite3_column_int64(d->airwayEdgesTo, 1)
));
}
d->reset(d->airwayEdgesTo);
return result;
}
AirwayRef NavDataCache::loadAirway(int airwayID)
{
sqlite3_bind_int(d->loadAirway, 1, airwayID);
bool ok = d->execSelect(d->loadAirway);
AirwayRef result;
if (ok) {
string ident = (char*) sqlite3_column_text(d->loadAirway, 0);
Airway::Level network = static_cast<Airway::Level>(sqlite3_column_int(d->loadAirway, 1));
result = new Airway(ident, network, airwayID, 0, 0);
}
d->reset(d->loadAirway);
return result;
}
PositionedIDVec NavDataCache::airwayWaypts(int id)
{
d->reset(d->airwayEdges);
sqlite3_bind_int(d->airwayEdges, 1, id);
typedef std::pair<PositionedID, PositionedID> Edge;
typedef std::deque<Edge> EdgeVec;
typedef std::deque<PositionedID> PositionedIDDeque;
// build up the EdgeVec, order is arbitrary
EdgeVec rawEdges;
while (d->stepSelect(d->airwayEdges)) {
rawEdges.push_back(Edge(sqlite3_column_int64(d->airwayEdges, 0),
sqlite3_column_int64(d->airwayEdges, 1)
));
}
d->reset(d->airwayEdges);
if (rawEdges.empty()) {
return {};
}
// linearize
PositionedIDVec result;
while (!rawEdges.empty()) {
bool didAddEdge = false;
std::set<PositionedID> seen;
EdgeVec nextDeque;
PositionedIDDeque linearAirway;
PositionedID firstId = rawEdges.front().first,
lastId = rawEdges.front().second;
// first edge is trivial
linearAirway.push_back(firstId);
linearAirway.push_back(lastId);
seen.insert(firstId);
seen.insert(lastId);
rawEdges.pop_front();
while (!rawEdges.empty()) {
Edge e = rawEdges.front();
rawEdges.pop_front();
bool seenFirst = (seen.find(e.first) != seen.end());
bool seenSecond = (seen.find(e.second) != seen.end());
// duplicated segment, should be impossible
assert(!(seenFirst && seenSecond));
if (!seenFirst && !seenSecond) {
// push back to try later on
nextDeque.push_back(e);
if (rawEdges.empty()) {
rawEdges = nextDeque;
nextDeque.clear();
if (!didAddEdge) {
// we have a disjoint, need to start a new section
// break out of the inner while loop so the outer
// one can process and restart
break;
}
didAddEdge = false;
}
continue;
}
// we have an exterior edge, grow our current linear piece
if (seenFirst && (e.first == firstId)) {
linearAirway.push_front(e.second);
firstId = e.second;
seen.insert(e.second);
} else if (seenSecond && (e.second == firstId)) {
linearAirway.push_front(e.first);
firstId = e.first;
seen.insert(e.first);
} else if (seenFirst && (e.first == lastId)) {
linearAirway.push_back(e.second);
lastId = e.second;
seen.insert(e.second);
} else if (seenSecond && (e.second == lastId)) {
linearAirway.push_back(e.first);
lastId = e.first;
seen.insert(e.first);
}
didAddEdge = true;
if (rawEdges.empty()) {
rawEdges = nextDeque;
nextDeque.clear();
}
}
if (!result.empty())
result.push_back(0);
result.insert(result.end(), linearAirway.begin(), linearAirway.end());
} // outer loop
SG_LOG(SG_AUTOPILOT, SG_WARN, "Airway:" << id);
for (unsigned int i=0; i<result.size(); ++i) {
if (result.at(i) == 0) {
SG_LOG(SG_AUTOPILOT, SG_WARN, i << " <break>");
} else {
SG_LOG(SG_AUTOPILOT, SG_WARN, i << " " << loadById(result.at(i))->ident());
}
}
return result;
}
PositionedID NavDataCache::findNavaidForRunway(PositionedID runway, FGPositioned::Type ty)
{
sqlite3_bind_int64(d->findNavaidForRunway, 1, runway);
sqlite3_bind_int(d->findNavaidForRunway, 2, ty);
PositionedID result = 0;
if (d->execSelect(d->findNavaidForRunway)) {
result = sqlite3_column_int64(d->findNavaidForRunway, 0);
}
d->reset(d->findNavaidForRunway);
return result;
}
bool NavDataCache::isReadOnly() const
{
return d->readOnly;
}
SGPath NavDataCache::path() const
{
return d->path;
}
/////////////////////////////////////////////////////////////////////////////////////////
// Transaction RAII object
NavDataCache::Transaction::Transaction(NavDataCache* cache) :
_instance(cache),
_committed(false)
{
assert(cache);
if (!cache->isReadOnly()) {
_instance->beginTransaction();
}
}
NavDataCache::Transaction::~Transaction()
{
if (_instance->isReadOnly()) {
return;
}
if (!_committed) {
SG_LOG(SG_NAVCACHE, SG_INFO, "aborting cache transaction!");
_instance->abortTransaction();
}
}
void NavDataCache::Transaction::commit()
{
if (_instance->isReadOnly()) {
return;
}
assert(!_committed);
_committed = true;
_instance->commitTransaction();
}
/////////////////////////////////////////////////////////////////////////////
class NavDataCache::ThreadedGUISearch::ThreadedGUISearchPrivate : public SGThread
{
public:
ThreadedGUISearchPrivate() :
db(NULL),
isComplete(false),
quit(false)
{}
virtual void run()
{
while (!quit) {
int err = sqlite3_step(query);
if (err == SQLITE_DONE) {
break;
} else if (err == SQLITE_ROW) {
PositionedID r = sqlite3_column_int64(query, 0);
std::lock_guard<std::mutex> g(lock);
results.push_back(r);
} else if (err == SQLITE_BUSY) {
// sleep a tiny amount
SGTimeStamp::sleepForMSec(1);
} else {
std::string errMsg = sqlite3_errmsg(db);
SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite error:" << errMsg << " running threaded search query");
}
}
std::lock_guard<std::mutex> g(lock);
isComplete = true;
}
std::mutex lock;
sqlite3* db;
sqlite3_stmt_ptr query;
PositionedIDVec results;
bool isComplete;
bool quit;
};
NavDataCache::ThreadedGUISearch::ThreadedGUISearch(const std::string& term, bool onlyAirports) :
d(new ThreadedGUISearchPrivate)
{
SGPath p = NavDataCache::instance()->path();
int openFlags = SQLITE_OPEN_READONLY;
std::string pathUtf8 = p.utf8Str();
sqlite3_open_v2(pathUtf8.c_str(), &d->db, openFlags, NULL);
std::string sql;
if (onlyAirports) {
sql = "SELECT rowid FROM positioned WHERE name LIKE '%" + term
+ "%' AND (type >= 1 AND type <= 3)";
} else {
sql = "SELECT rowid FROM positioned WHERE name LIKE '%" + term
+ "%' AND ((type >= 1 AND type <= 3) OR ((type >= 9 AND type <= 11))) ";
}
sqlite3_prepare_v2(d->db, sql.c_str(), sql.length(), &d->query, NULL);
d->start();
}
NavDataCache::ThreadedGUISearch::~ThreadedGUISearch()
{
{
std::lock_guard<std::mutex> g(d->lock);
d->quit = true;
}
d->join();
sqlite3_finalize(d->query);
sqlite3_close_v2(d->db);
}
PositionedIDVec NavDataCache::ThreadedGUISearch::results() const
{
PositionedIDVec r;
{
std::lock_guard<std::mutex> g(d->lock);
r = std::move(d->results);
}
return r;
}
bool NavDataCache::ThreadedGUISearch::isComplete() const
{
std::lock_guard<std::mutex> g(d->lock);
return d->isComplete;
}
} // of namespace flightgear