Memory

[john-peterson]

Memory

Problem

In the Debug build

• memory isn't freed
• memory use grow by 0,05 MB/s from process start

because

_CRTDBG_DELAY_FREE_MEM_DF (added in e4785df) keep freed heap to allow detection of read/write to it

Log

This is the output from closing a Crazy Taxi NTSC emulation twice for

the Debug build

50:42:490 Src\Core.cpp:491 I[CONSOLE]: Stop [Video Thread 24932]    504 616 K  Shutting down HW
50:42:653 Src\Core.cpp:493 I[CONSOLE]: Stop [Video Thread 24932]    441 020 K  HW shutdown
50:42:747 Src\Core.cpp:266 I[CONSOLE]: Stop [Main Thread 4480]  404 232 K  Main Emu thread stopped

51:03:993 Src\Core.cpp:491 I[CONSOLE]: Stop [Video Thread 18156]    812 644 K  Shutting down HW
51:04:163 Src\Core.cpp:493 I[CONSOLE]: Stop [Video Thread 18156]    749 084 K  HW shutdown
51:04:248 Src\Core.cpp:266 I[CONSOLE]: Stop [Main Thread 4480]  713 228 K  Main Emu thread stopped

the DebugFast build

48:24:582 Src\Core.cpp:491 I[CONSOLE]: Stop [Video Thread 20200]    334 960 K  Shutting down HW
48:27:126 Src\Core.cpp:493 I[CONSOLE]: Stop [Video Thread 20200]    126 264 K  HW shutdown
48:27:218 Src\Core.cpp:266 I[CONSOLE]: Stop [Main Thread 16532]  69 620 K  Main Emu thread stopped

48:47:768 Src\Core.cpp:491 I[CONSOLE]: Stop [Video Thread 7332] 333 444 K  Shutting down HW
48:51:567 Src\Core.cpp:493 I[CONSOLE]: Stop [Video Thread 7332] 127 692 K  HW shutdown
48:51:654 Src\Core.cpp:266 I[CONSOLE]: Stop [Main Thread 16532]  71 012 K  Main Emu thread stopped

Solution

_CRTDBG_DELAY_FREE_MEM_DF should be disabled because

• memory allocation is significnatly lower
• it can esasily be enabled if a heap corruption is suspected