Open source softwarový stack ROCm (Wikipedie) pro vývoj AI a HPC na GPU od AMD byl vydán ve verzi 7.0.0. Přidána byla podpora AMD Instinct MI355X a MI350X.
Byla vydána nová verze 258 správce systému a služeb systemd (GitHub).
Byla vydána Java 25 / JDK 25. Nových vlastností (JEP - JDK Enhancement Proposal) je 18. Jedná se o LTS verzi.
Věra Pohlová před 26 lety: „Tyhle aféry každého jenom otravují. Já bych všechny ty internety a počítače zakázala“. Jde o odpověď na anketní otázku deníku Metro vydaného 17. září 1999 na téma zneužití údajů o sporožirových účtech klientů České spořitelny.
Byla publikována Výroční zpráva Blender Foundation za rok 2024 (pdf).
Byl vydán Mozilla Firefox 143.0. Přehled novinek v poznámkách k vydání a poznámkách k vydání pro vývojáře. Nově se Firefox při ukončování anonymního režimu zeptá, zda chcete smazat stažené soubory. Dialog pro povolení přístupu ke kameře zobrazuje náhled. Obzvláště užitečné při přepínání mezi více kamerami. Řešeny jsou rovněž bezpečnostní chyby. Nový Firefox 143 bude brzy k dispozici také na Flathubu a Snapcraftu.
Byla vydána betaverze Fedora Linuxu 43 (ChangeSet), tj. poslední zastávka před vydáním finální verze, která je naplánována na úterý 21. října.
Multiplatformní emulátor terminálu Ghostty byl vydán ve verzi 1.2 (𝕏, Mastodon). Přehled novinek, vylepšení a nových efektů v poznámkách k vydání.
Byla vydána nová verze 4.5 (𝕏, Bluesky, Mastodon) multiplatformního open source herního enginu Godot (Wikipedie, GitHub). Přehled novinek i s náhledy v příspěvku na blogu.
Byla vydána verze 3.0 (Mastodon) nástroje pro záznam a sdílení terminálových sezení asciinema (GitHub). S novou verzí formátu záznamu asciicast v3, podporou live streamingu a především kompletním přepisem z Pythonu do Rustu.
mem.h
#include <QWidget> class Mem : public QWidget { public: Mem (QWidget * parent = NULL); };
mem.cpp
#include "mem.h" #include <QVBoxLayout> #include <QLabel> Mem::Mem (QWidget * parent) : QWidget(parent) { QVBoxLayout * vbox = new QVBoxLayout(this); QLabel * one = new QLabel("Hello"); QLabel * two = new QLabel("world!"); vbox->addWidget(one); vbox->addWidget(two); setLayout(vbox); }
main.cpp
#include <QApplication> #include "mem.h" int main (int argc, char ** argv) { QApplication app(argc,argv); Mem window; window.show(); return app.exec(); }A teď výpis z Valgrindu:
==26725== HEAP SUMMARY: ==26725== in use at exit: 83,285 bytes in 1,696 blocks ==26725== total heap usage: 17,743 allocs, 16,047 frees, 1,890,066 bytes allocated ==26725== ==26725== LEAK SUMMARY: ==26725== definitely lost: 192 bytes in 2 blocks ==26725== indirectly lost: 912 bytes in 34 blocks ==26725== possibly lost: 1,720 bytes in 9 blocks ==26725== still reachable: 80,461 bytes in 1,651 blocks ==26725== suppressed: 0 bytes in 0 blocksVýpis s
--leak-check=full
==27097== Memcheck, a memory error detector ==27097== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al. ==27097== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info ==27097== Command: ./memory_leak ==27097== Parent PID: 24134 ==27097== ==27097== ==27097== HEAP SUMMARY: ==27097== in use at exit: 83,285 bytes in 1,696 blocks ==27097== total heap usage: 17,438 allocs, 15,742 frees, 1,884,214 bytes allocated ==27097== ==27097== 120 bytes in 1 blocks are possibly lost in loss record 116 of 170 ==27097== at 0x4024150: memalign (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==27097== by 0x402420E: posix_memalign (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==27097== by 0x509FFA9: ??? (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50A14C8: g_slice_alloc (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50A219D: g_slist_prepend (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50A516C: g_strsplit (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50BACB8: g_get_language_names (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50BB216: ??? (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50AD289: g_thread_init_glib (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50364B5: g_thread_init (in /usr/lib/libgthread-2.0.so.0.2800.6) ==27097== by 0x4C61941: QEventDispatcherGlibPrivate::QEventDispatcherGlibPrivate(_GMainContext*) (in /usr/lib/qt/lib/libQtCore.so.4.7.0) ==27097== by 0x4227BB5: ??? (in /usr/lib/qt/lib/libQtGui.so.4.7.0) ==27097== ==27097== 124 bytes in 1 blocks are definitely lost in loss record 117 of 170 ==27097== at 0x4025BB8: malloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==27097== by 0x53CCE52: ??? (in /usr/lib/libxcb.so.1.1.0) ==27097== by 0x53CCF54: ??? (in /usr/lib/libxcb.so.1.1.0) ==27097== by 0x53CC813: xcb_connect_to_display_with_auth_info (in /usr/lib/libxcb.so.1.1.0) ==27097== by 0x53CCB5B: xcb_connect (in /usr/lib/libxcb.so.1.1.0) ==27097== by 0x52D5652: _XConnectXCB (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x52C5476: XOpenDisplay (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x41FBC5C: ??? (in /usr/lib/qt/lib/libQtGui.so.4.7.0) ==27097== by 0x417DAD7: QApplicationPrivate::construct(_XDisplay*, unsigned long, unsigned long) (in /usr/lib/qt/lib/libQtGui.so.4.7.0) ==27097== by 0x417E342: QApplication::QApplication(int&, char**, int) (in /usr/lib/qt/lib/libQtGui.so.4.7.0) ==27097== by 0x8049E7A: main (in /home/yenn/qt/memory_leak/memory_leak) ==27097== ==27097== 360 bytes in 3 blocks are possibly lost in loss record 132 of 170 ==27097== at 0x4024150: memalign (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==27097== by 0x402420E: posix_memalign (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==27097== by 0x509FFA9: ??? (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50A14E5: g_slice_alloc (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50A219D: g_slist_prepend (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50A516C: g_strsplit (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50BACB8: g_get_language_names (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50BB216: ??? (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50AD289: g_thread_init_glib (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50364B5: g_thread_init (in /usr/lib/libgthread-2.0.so.0.2800.6) ==27097== by 0x4C61941: QEventDispatcherGlibPrivate::QEventDispatcherGlibPrivate(_GMainContext*) (in /usr/lib/qt/lib/libQtCore.so.4.7.0) ==27097== by 0x4227BB5: ??? (in /usr/lib/qt/lib/libQtGui.so.4.7.0) ==27097== ==27097== 980 (68 direct, 912 indirect) bytes in 1 blocks are definitely lost in loss record 150 of 170 ==27097== at 0x4025C9E: realloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==27097== by 0x52E9A57: ??? (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x52E9FD0: ??? (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x52EBC91: ??? (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x52EC4B4: _XlcCreateLC (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x530F509: _XlcUtf8Loader (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x52F43BB: _XOpenLC (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x52F467D: _XrmInitParseInfo (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x52DAA10: ??? (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x52DE1B7: XrmGetStringDatabase (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x52B9ADE: ??? (in /usr/lib/libX11.so.6.3.0) ==27097== by 0x52B9D0E: XGetDefault (in /usr/lib/libX11.so.6.3.0) ==27097== ==27097== 1,240 bytes in 5 blocks are possibly lost in loss record 156 of 170 ==27097== at 0x4024150: memalign (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==27097== by 0x402420E: posix_memalign (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==27097== by 0x509FFA9: ??? (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50A14E5: g_slice_alloc (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50545F8: g_array_sized_new (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50546D2: g_array_new (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50AD16E: g_static_private_set (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x5064846: g_get_filename_charsets (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50648CC: ??? (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50AD279: g_thread_init_glib (in /usr/lib/libglib-2.0.so.0.2800.6) ==27097== by 0x50364B5: g_thread_init (in /usr/lib/libgthread-2.0.so.0.2800.6) ==27097== by 0x4C61941: QEventDispatcherGlibPrivate::QEventDispatcherGlibPrivate(_GMainContext*) (in /usr/lib/qt/lib/libQtCore.so.4.7.0) ==27097== ==27097== LEAK SUMMARY: ==27097== definitely lost: 192 bytes in 2 blocks ==27097== indirectly lost: 912 bytes in 34 blocks ==27097== possibly lost: 1,720 bytes in 9 blocks ==27097== still reachable: 80,461 bytes in 1,651 blocks ==27097== suppressed: 0 bytes in 0 blocks ==27097== Reachable blocks (those to which a pointer was found) are not shown. ==27097== To see them, rerun with: --leak-check=full --show-reachable=yes ==27097== ==27097== For counts of detected and suppressed errors, rerun with: -v ==27097== ERROR SUMMARY: 5 errors from 5 contexts (suppressed: 75 from 9)OS: Slackware-current, g++ 4.5.3, QT 4.7 Je to chyba v QT nebo dělám něco špatně já?
Řešení dotazu:
Nijak zvlášť jsem to nestudoval, ale IMHO minimálně neuklízíš vbox, one a two
addWidget()
[...]
Note: The ownership of item is transferred to the layout, and it's the layout's responsibility to delete it
Pokuď layout manager uklízí sám své widgety a widget svůj layout manager, pak je všechno v pořádku.
Release 1.7 (2010-08-13)
========================
- Always wake up readers after writing
- Get rid of PATH_MAX and MAXPATHLEN
- Add ~ operator support in code generator
- xcb_open: Improve protocol/host parsing
- xcb_connect_to_display_with_auth_info: Fix memory leak
- Report which extensions are being built
Dost z tech glib leaku je staticky alokovana pamet, ktera se alokoje jen jednou pri startu - nemela by mit vliv na program.
Tiskni
Sdílej: