3
私はアプリケーションにメモリリークがないようにしています。SDLライブラリのメモリリーク
int main(int argc, char* argv[]) {
if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER) != 0) {
printf("Could not initialize SDL - %s\n", SDL_GetError());
return -1;
}
int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL|SDL_FULLSCREEN;
SDL_Surface* screen = SDL_SetVideoMode(0, 0, 0, flags);
SDL_Quit();
return 0;
}
私は、このアプリケーションでvalgrindのを実行すると、このメッセージの最後に記載されているとして、それはメモリリークの束を報告します。私は、次の簡単なSDLアプリケーションへのリークを絞り込みます。
SDL_SetVideoModeのドキュメントによれば、SDL_SetVideoModeから返されるサーフェスはSDL_Quitによって解放され、呼び出し元によって解放されてはならないことに注意してください。
http://sdl.beuc.net/sdl.wiki/SDL_SetVideoMode
誰かが、それは私が行方不明だということであるものを私に伝えることができる場合、私はそれをお願い申し上げます。
ご協力いただきありがとうございます。
==651== Memcheck, a memory error detector
==651== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al.
==651== Using Valgrind-3.6.1-Debian and LibVEX; rerun with -h for copyright info
==651== Command: ./main
==651==
==651== Syscall param writev(vector[...]) points to uninitialised byte(s)
==651== at 0x4F3FE05: writev (writev.c:56)
==651== by 0x40004: ???
==651== Address 0x5701bfb is 19 bytes inside a block of size 16,384 alloc'd
==651== at 0x402732C: calloc (vg_replace_malloc.c:467)
==651== by 0x5B06551: XOpenDisplay (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x4DF52DB: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4E00403: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DED4A8: SDL_VideoInit (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DC1C79: SDL_InitSubSystem (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4E8F112: (below main) (libc-start.c:226)
==651==
==651==
==651== HEAP SUMMARY:
==651== in use at exit: 48,065 bytes in 917 blocks
==651== total heap usage: 13,115 allocs, 12,198 frees, 1,985,815 bytes allocated
==651==
==651== 10 bytes in 2 blocks are definitely lost in loss record 9 of 167
==651== at 0x4028876: malloc (vg_replace_malloc.c:236)
==651== by 0x4EEC010: strdup (strdup.c:43)
==651== by 0xBED27FFF: ???
==651==
==651== 12 bytes in 1 blocks are definitely lost in loss record 14 of 167
==651== at 0x4028876: malloc (vg_replace_malloc.c:236)
==651== by 0x5C2206A: ???
==651== by 0x5C21AE4: ???
==651== by 0x5C21E8A: ???
==651== by 0x5C22365: ???
==651== by 0x5C1C8AD: ???
==651== by 0x5C1CBAB: ???
==651== by 0x4DF62CB: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4E006CF: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DED4A8: SDL_VideoInit (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DC1C79: SDL_InitSubSystem (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4E8F112: (below main) (libc-start.c:226)
==651==
==651== 112 (8 direct, 104 indirect) bytes in 1 blocks are definitely lost in loss record 135 of 167
==651== at 0x402896C: realloc (vg_replace_malloc.c:525)
==651== by 0x5B2A7B6: ??? (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B2ACB2: ??? (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B2C75F: ??? (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B2CFEA: _XlcCreateLC (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B4BFD9: _XlcDefaultLoader (in /usr/lib/i386-linux- gnu/libX11.so.6.3.0)
==651== by 0x5B34E3B: _XOpenLC (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B34FA1: _XlcCurrentLC (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x4E005DB: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DED4A8: SDL_VideoInit (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DC1C79: SDL_InitSubSystem (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4E8F112: (below main) (libc-start.c:226)
==651==
==651== 112 (8 direct, 104 indirect) bytes in 1 blocks are definitely lost in loss record 136 of 167
==651== at 0x402896C: realloc (vg_replace_malloc.c:525)
==651== by 0x5B2A7B6: ??? (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B2ACB2: ??? (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B2C75F: ??? (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B2CFEA: _XlcCreateLC (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B4BFD9: _XlcDefaultLoader (in /usr/lib/i386-linux- gnu/libX11.so.6.3.0)
==651== by 0x5B34E3B: _XOpenLC (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B350BA: _XrmInitParseInfo (in /usr/lib/i386-linux- gnu/libX11.so.6.3.0)
==651== by 0x5B1B6AD: ??? (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B1F294: XrmGetStringDatabase (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5AFA4DA: ??? (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5AFA6F6: XGetDefault (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651==
==651== 124 bytes in 1 blocks are definitely lost in loss record 137 of 167
==651== at 0x4028876: malloc (vg_replace_malloc.c:236)
==651== by 0x55B0747: ??? (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B0802: ??? (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B029F: xcb_connect_to_display_with_auth_info (in /usr/lib/i386- linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B045A: xcb_connect (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x5B16407: _XConnectXCB (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B0619F: XOpenDisplay (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x4DF52DB: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4E003DF: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DED4A8: SDL_VideoInit (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DC1C79: SDL_InitSubSystem (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4E8F112: (below main) (libc-start.c:226)
==651==
==651== 124 bytes in 1 blocks are definitely lost in loss record 138 of 167
==651== at 0x4028876: malloc (vg_replace_malloc.c:236)
==651== by 0x55B0747: ??? (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B0802: ??? (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B029F: xcb_connect_to_display_with_auth_info (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B045A: xcb_connect (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x5B16407: _XConnectXCB (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B0619F: XOpenDisplay (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x4DF52DB: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DFDD7B: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DED574: SDL_VideoInit (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DC1C79: SDL_InitSubSystem (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4E8F112: (below main) (libc-start.c:226)
==651==
==651== 124 bytes in 1 blocks are definitely lost in loss record 139 of 167
==651== at 0x4028876: malloc (vg_replace_malloc.c:236)
==651== by 0x55B0747: ??? (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B0802: ??? (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B029F: xcb_connect_to_display_with_auth_info (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B045A: xcb_connect (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x5B16407: _XConnectXCB (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x5B0619F: XOpenDisplay (in /usr/lib/i386-linux-gnu/libX11.so.6.3.0)
==651== by 0x4DF52DB: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4E00403: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DED4A8: SDL_VideoInit (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DC1C79: SDL_InitSubSystem (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4E8F112: (below main) (libc-start.c:226)
==651==
==651== 124 bytes in 1 blocks are definitely lost in loss record 140 of 167
==651== at 0x4028876: malloc (vg_replace_malloc.c:236)
==651== by 0x55B0747: ??? (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B0802: ??? (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B029F: xcb_connect_to_display_with_auth_info (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x55B045A: xcb_connect (in /usr/lib/i386-linux-gnu/libxcb.so.1.1.0)
==651== by 0x5534050: pa_client_conf_from_x11 (in /usr/lib/i386-linux-gnu/libpulsecommon-1.0.so)
==651== by 0x54172E4: pa_context_new_with_proplist (in /usr/lib/i386-linux-gnu/libpulse.so.0.13.4)
==651== by 0x54173EA: pa_context_new (in /usr/lib/i386-linux-gnu/libpulse.so.0.13.4)
==651== by 0x54085C5: pa_simple_new (in /usr/lib/i386-linux-gnu/libpulse-simple.so.0.0.3)
==651== by 0x4DF4263: ??? (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DC2B16: SDL_AudioInit (in /usr/lib/libSDL-1.2.so.0.11.3)
==651== by 0x4DC1BD6: SDL_InitSubSystem (in /usr/lib/libSDL-1.2.so.0.11.3)
==651==
==651== LEAK SUMMARY:
==651== definitely lost: 534 bytes in 9 blocks
==651== indirectly lost: 208 bytes in 8 blocks
==651== possibly lost: 0 bytes in 0 blocks
==651== still reachable: 47,323 bytes in 900 blocks
==651== suppressed: 0 bytes in 0 blocks
==651== Reachable blocks (those to which a pointer was found) are not shown.
==651== To see them, rerun with: --leak-check=full --show-reachable=yes
==651==
==651== For counts of detected and suppressed errors, rerun with: -v
==651== Use --track-origins=yes to see where uninitialised values come from
==651== ERROR SUMMARY: 10 errors from 9 contexts (suppressed: 113 from 13)
どのバージョンのSDLですか？ – karlphillip
SDLバージョン1.2.14。 Ubuntu 11.10で動作します。すべての最新アップグレードが適用されます。 – Peter
http://stackoverflow.com/questions/1997171/why-does-valgrind-say-basic-sdl-program-is-leaking-memoryの正確な複製 –