| 1 | #include"safedelete.h"
|
|---|
| 2 |
|
|---|
| 3 | #include<qtimer.h>
|
|---|
| 4 |
|
|---|
| 5 | //----------------------------------------------------------------------------
|
|---|
| 6 | // SafeDelete
|
|---|
| 7 | //----------------------------------------------------------------------------
|
|---|
| 8 | SafeDelete::SafeDelete()
|
|---|
| 9 | {
|
|---|
| 10 | lock = 0;
|
|---|
| 11 | }
|
|---|
| 12 |
|
|---|
| 13 | SafeDelete::~SafeDelete()
|
|---|
| 14 | {
|
|---|
| 15 | if(lock)
|
|---|
| 16 | lock->dying();
|
|---|
| 17 | }
|
|---|
| 18 |
|
|---|
| 19 | void SafeDelete::deleteLater(QObject *o)
|
|---|
| 20 | {
|
|---|
| 21 | if(!lock)
|
|---|
| 22 | deleteSingle(o);
|
|---|
| 23 | else
|
|---|
| 24 | list.append(o);
|
|---|
| 25 | }
|
|---|
| 26 |
|
|---|
| 27 | void SafeDelete::unlock()
|
|---|
| 28 | {
|
|---|
| 29 | lock = 0;
|
|---|
| 30 | deleteAll();
|
|---|
| 31 | }
|
|---|
| 32 |
|
|---|
| 33 | void SafeDelete::deleteAll()
|
|---|
| 34 | {
|
|---|
| 35 | if(list.isEmpty())
|
|---|
| 36 | return;
|
|---|
| 37 |
|
|---|
| 38 | QObjectListIt it(list);
|
|---|
| 39 | for(QObject *o; (o = it.current()); ++it)
|
|---|
| 40 | deleteSingle(o);
|
|---|
| 41 | list.clear();
|
|---|
| 42 | }
|
|---|
| 43 |
|
|---|
| 44 | void SafeDelete::deleteSingle(QObject *o)
|
|---|
| 45 | {
|
|---|
| 46 | #if QT_VERSION < 0x030000
|
|---|
| 47 | // roll our own QObject::deleteLater()
|
|---|
| 48 | SafeDeleteLater *sdl = SafeDeleteLater::ensureExists();
|
|---|
| 49 | sdl->deleteItLater(o);
|
|---|
| 50 | #else
|
|---|
| 51 | o->deleteLater();
|
|---|
| 52 | #endif
|
|---|
| 53 | }
|
|---|
| 54 |
|
|---|
| 55 | //----------------------------------------------------------------------------
|
|---|
| 56 | // SafeDeleteLock
|
|---|
| 57 | //----------------------------------------------------------------------------
|
|---|
| 58 | SafeDeleteLock::SafeDeleteLock(SafeDelete *sd)
|
|---|
| 59 | {
|
|---|
| 60 | own = false;
|
|---|
| 61 | if(!sd->lock) {
|
|---|
| 62 | _sd = sd;
|
|---|
| 63 | _sd->lock = this;
|
|---|
| 64 | }
|
|---|
| 65 | else
|
|---|
| 66 | _sd = 0;
|
|---|
| 67 | }
|
|---|
| 68 |
|
|---|
| 69 | SafeDeleteLock::~SafeDeleteLock()
|
|---|
| 70 | {
|
|---|
| 71 | if(_sd) {
|
|---|
| 72 | _sd->unlock();
|
|---|
| 73 | if(own)
|
|---|
| 74 | delete _sd;
|
|---|
| 75 | }
|
|---|
| 76 | }
|
|---|
| 77 |
|
|---|
| 78 | void SafeDeleteLock::dying()
|
|---|
| 79 | {
|
|---|
| 80 | _sd = new SafeDelete(*_sd);
|
|---|
| 81 | own = true;
|
|---|
| 82 | }
|
|---|
| 83 |
|
|---|
| 84 | //----------------------------------------------------------------------------
|
|---|
| 85 | // SafeDeleteLater
|
|---|
| 86 | //----------------------------------------------------------------------------
|
|---|
| 87 | SafeDeleteLater *SafeDeleteLater::self = 0;
|
|---|
| 88 |
|
|---|
| 89 | SafeDeleteLater *SafeDeleteLater::ensureExists()
|
|---|
| 90 | {
|
|---|
| 91 | if(!self)
|
|---|
| 92 | new SafeDeleteLater();
|
|---|
| 93 | return self;
|
|---|
| 94 | }
|
|---|
| 95 |
|
|---|
| 96 | SafeDeleteLater::SafeDeleteLater()
|
|---|
| 97 | {
|
|---|
| 98 | list.setAutoDelete(true);
|
|---|
| 99 | self = this;
|
|---|
| 100 | QTimer::singleShot(0, this, SLOT(explode()));
|
|---|
| 101 | }
|
|---|
| 102 |
|
|---|
| 103 | SafeDeleteLater::~SafeDeleteLater()
|
|---|
| 104 | {
|
|---|
| 105 | list.clear();
|
|---|
| 106 | self = 0;
|
|---|
| 107 | }
|
|---|
| 108 |
|
|---|
| 109 | void SafeDeleteLater::deleteItLater(QObject *o)
|
|---|
| 110 | {
|
|---|
| 111 | list.append(o);
|
|---|
| 112 | }
|
|---|
| 113 |
|
|---|
| 114 | void SafeDeleteLater::explode()
|
|---|
| 115 | {
|
|---|
| 116 | delete this;
|
|---|
| 117 | }
|
|---|
