DrawImageRect: Memory leak

Archives Forums/BlitzMax Bug Reports/DrawImageRect: Memory leak

Klin	(Posted 2011) [#1]

Hello,
a friend gave me a part of his code and told me that the code have a memory leak. But then I saw that the function "DrawImageRect" have a memory leak. This Code is with fix:

Graphics 640,480

Local Image:TImage=CreateImage(255,255)
Local Map:TPixmap,x:Int,y:Int,d:Byte
SetBlend ALPHABLEND

While Not AppTerminate()
	Map= LockImage(Image)
	For x= 0 To 254
		For y = 0 To 254
			WritePixel(Map,x,y,-278619)
		Next
	Next
	UnlockImage(Image)
	
	
	DrawImageRect(Image,0,0,640,480)
	DrawText "GCMemAlloced = "+(Float(GCMemAlloced())/1024)+" kb",0,0
	DrawText "Press 'A' to enable GCCollect() (fix)",0,20
	
	If d Then
		GCCollect() '<- FIX!
		DrawText "Enable",0,40
	Else
		DrawText "Disabled",0,40
	EndIf
	If KeyHit(KEY_A) Then
		If d=False Then
			d=True
		Else
			d=False
		EndIf
	EndIf
	
	Flip
Wend

My System:
Windows 7 Ultimate 32-Bit
3GB Ram

I hope that I could help.

THX
Klin

Last edited 2011

therevills

(Posted 2011) [#2]

Just tested using v1.42, no memory leak here - the GCMem never goes past 80KB and the application never goes past 40MB (viewed from Task manager).

What version of BlitzMax are you running? And how bad was the memory leak?

SLotman

(Posted 2011) [#3]

Same here. With or without the fix, no difference at all. No leak. (Tested on XP btw)

Last edited 2011

Klin	(Posted 2011) [#4]

MaxIDE: 1.40
BCC Version: 1.42
MinGW: C:\MinGW

FASM Version: 1.69.14
GCC Version: 4.5.0
G++ Version: 4.5.0

I tested this code today again on 3 PCs (with XP and Windows 7) and the memory still leak. :/

And the memory leak goes until 1.000.000 K. Then I closed the game.

Klin
EDIT:

An other PC with XP here don't have the memory leak Oo.

Last edited 2011