unbounded_buffer, _CrtSetDbgFlag y pérdidas de memoria
https://stackoverflow.com/questions/3452251
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27-09-2019 - |
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Estoy tratando de utilizar una de las nuevas características - biblioteca de agentes asíncronos. Acabo de añadir un
unbounded_buffer m_myDataBuffer; a mi clase de C ++, nada más - sin embargo, ningún agente se ejecuta .
Para habilitar la detección de fugas de memoria en mi solicitud, estoy utilizando:
#ifdef _DEBUG
_CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
#endif
Sin embargo, después de cerrar la ventana de mi aplicación (estoy usando sencilla aplicación con interfaz gráfica Win 32) de Visual Studio muestra un montón de pérdidas de memoria:
Detected memory leaks!
Dumping objects ->
{261} normal block at 0x007C4EB8, 288 bytes long.
Data: < 5 > 00 00 02 00 02 00 00 00 10 02 00 00 10 B1 35 00
{260} normal block at 0x007C4E70, 12 bytes long.
Data: < HM| > 00 00 00 00 00 02 00 00 48 4D 7C 00
{259} normal block at 0x007C4E18, 28 bytes long.
Data: < > 00 00 00 00 CD CD CD CD 00 00 00 00 00 00 00 00
{258} normal block at 0x0035AEF0, 28 bytes long.
Data: < > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
{257} normal block at 0x007C4D48, 144 bytes long.
Data: < U > A4 C2 F4 55 CD CD CD CD 00 00 00 00 00 00 00 00
{255} normal block at 0x007C0AB8, 16388 bytes long.
Data: < > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
{254} normal block at 0x0035CF30, 12 bytes long.
Data: < | > 01 10 00 00 01 00 00 00 B8 0A 7C 00
{253} normal block at 0x007C0978, 256 bytes long.
Data: < > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
{252} normal block at 0x007C08A8, 148 bytes long.
Data: < ! U > 8C 21 F5 55 01 00 00 00 00 00 00 00 00 00 00 00
{251} normal block at 0x0035FEB8, 256 bytes long.
Data: < > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
{250} normal block at 0x0035FDE8, 148 bytes long.
Data: < ! U > 8C 21 F5 55 01 00 00 00 00 00 00 00 00 00 00 00
{249} normal block at 0x007C0068, 2048 bytes long.
Data: < 5 > A0 FD 35 00 CD CD CD CD CD CD CD CD CD CD CD CD
{248} normal block at 0x0035FDA0, 12 bytes long.
Data: <` 5 > 60 F9 35 00 00 00 00 00 FF FF FF FF
{247} normal block at 0x0035F960, 1024 bytes long.
Data: < 5 | > E8 FD 35 00 A8 08 7C 00 00 00 00 00 00 00 00 00
{246} normal block at 0x0035F8B8, 104 bytes long.
Data: < 5 5 > 10 B1 35 00 98 D0 35 00 02 00 00 00 02 00 00 00
{245} normal block at 0x0035F078, 2048 bytes long.
Data: <0 5 > 30 F0 35 00 CD CD CD CD CD CD CD CD CD CD CD CD
{244} normal block at 0x0035F030, 12 bytes long.
Data: < 5 > F0 EB 35 00 00 00 00 00 FF FF FF FF
{243} normal block at 0x0035EBF0, 1024 bytes long.
Data: < > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
{242} normal block at 0x0035E3B0, 2048 bytes long.
Data: <h 5 > 68 E3 35 00 CD CD CD CD CD CD CD CD CD CD CD CD
{241} normal block at 0x0035E368, 12 bytes long.
Data: <( 5 > 28 DF 35 00 00 00 00 00 FF FF FF FF
{240} normal block at 0x0035DF28, 1024 bytes long.
Data: < > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
{239} normal block at 0x0035DE08, 224 bytes long.
Data: < U 5 > 98 13 F5 55 00 00 00 00 0C DE 35 00 00 00 00 00
{238} normal block at 0x0035D5C8, 2048 bytes long.
Data: < 5 > 80 D5 35 00 CD CD CD CD CD CD CD CD CD CD CD CD
{237} normal block at 0x0035D580, 12 bytes long.
Data: <@ 5 > 40 D1 35 00 00 00 00 00 FF FF FF FF
{236} normal block at 0x0035D140, 1024 bytes long.
Data: < 5 > 08 DE 35 00 00 00 00 00 00 00 00 00 00 00 00 00
{235} normal block at 0x0035D098, 104 bytes long.
Data: < 5 5 5 > 10 B1 35 00 B8 F8 35 00 08 DE 35 00 CD CD CD CD
{234} normal block at 0x0035D008, 80 bytes long.
Data: <, U\ U > 2C C4 F4 55 5C C1 F4 55 00 00 00 00 00 00 00 00
{233} normal block at 0x0035CF78, 80 bytes long.
Data: <, U\ U > 2C C4 F4 55 5C C1 F4 55 00 00 00 00 00 00 00 00
{231} normal block at 0x0035CEF0, 4 bytes long.
Data: < > 00 00 00 00
{230} normal block at 0x0035CE58, 88 bytes long.
Data: < | 5 > 01 00 00 00 00 00 00 00 01 00 00 00 7C CF 35 00
{229} normal block at 0x0035C300, 44 bytes long.
Data: < > 03 00 00 00 02 00 00 00 02 00 00 00 00 00 00 00
{228} normal block at 0x0035C5E0, 2104 bytes long.
Data: < > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
{227} normal block at 0x0035C4D0, 208 bytes long.
Data: <l U 5 0 5 > 6C 0A F5 55 00 00 00 00 E8 C0 35 00 30 C1 35 00
{225} normal block at 0x0035C2C0, 4 bytes long.
Data: < 5 > B8 F8 35 00
{224} normal block at 0x0035C280, 4 bytes long.
Data: < 5 > 98 D0 35 00
{223} normal block at 0x0035C200, 64 bytes long.
Data: < 5 > 10 C5 35 00 CD CD CD CD CD CD CD CD CD CD CD CD
{222} normal block at 0x0035C488, 8 bytes long.
Data: < > 00 00 00 00 01 00 00 00
{221} normal block at 0x0035C418, 48 bytes long.
Data: < > 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00
{220} normal block at 0x0035C3D8, 4 bytes long.
Data: < > 00 00 00 00
{219} normal block at 0x0035C378, 36 bytes long.
Data: < > 03 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00
{217} normal block at 0x0035C130, 148 bytes long.
Data: <l U > 6C D7 F4 55 02 00 00 00 01 00 00 00 10 00 00 00
{216} normal block at 0x0035C0E8, 8 bytes long.
Data: < U 5 > C0 11 F5 55 10 B1 35 00
{215} normal block at 0x0035B8A8, 2048 bytes long.
Data: < 5 > 00 AE 35 00 CD CD CD CD CD CD CD CD CD CD CD CD
{214} normal block at 0x0035AE00, 12 bytes long.
Data: <h 5 > 68 B4 35 00 00 00 00 00 FF FF FF FF
{213} normal block at 0x0035B468, 1024 bytes long.
Data: < N| > 18 4E 7C 00 00 00 00 00 00 00 00 00 00 00 00 00
{212} normal block at 0x0035AF50, 36 bytes long.
Data: < > 00 00 00 00 02 00 00 00 01 00 00 00 01 00 00 00
{211} normal block at 0x0035B110, 368 bytes long.
Data: < UP 5 > CC 1D F5 55 50 AF 35 00 00 00 00 00 00 00 00 00
Object dump complete.
Las fugas desaparece justo después de que comente la
unbounded_buffer<int> m_myDataBuffer;
o después comento hacia fuera
_CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
¿Hay nada de especial unbounded_buffer que tengo que hacer para liberarlo, incluso si no se utiliza? O tengo que configurar _CrtSetDbgFlag de alguna manera especial? _CrtSetDbgFlag es la causa de las fugas mem o que de alguna manera es la creación de falsas detecciones en este caso y no hay pérdidas de memoria reales? Lo que me estoy perdiendo aquí?
Estoy 100% seguro de que esas fugas no vienen de mi código, porque también he
#ifdef _DEBUG
#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>
#define new new(_NORMAL_BLOCK,__FILE__, __LINE__)
en mi stdafx.hy así pérdidas de memoria de mi código tiene los nombres de archivo y líneas. Pero los de unbounded_buffer no tienen tal información, así que supongo que eso significa que provienen de la biblioteca agentes.
Solución
Bueno, he encontrado que la bandera _CRTDBG_LEAK_CHECK_DF hace la llamada automática de _CrtDumpMemoryLeaks (); al final de la aplicación. Pero parece que no está ocurriendo en el final. Quité _CRTDBG_LEAK_CHECK_DF y llamados _CrtDumpMemoryLeaks () al final del main () y ahora los informes de pérdidas de memoria correctamente ... eso espero.
También hay un informe de error en Microsoft MSDN acerca de algunas pérdidas de memoria en las bibliotecas PPL, espero que lo arreglarán ellos pronto.
