Memory leak on releasing MTLCommandBuffer

Question

Created Oct ’20

Replies 2

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Hi! I'm trying to execute some kernels multiply times, but encoder creation, execution and deallocation called from different places, so i can't just put it into @autoreleasepool. Then i try to release command buffer manually nothing happens. Sample:

Code Block objective-cfor (int32_t i = 0; i<100000; ++i)
{
		_commandBuffer = [_commandQueue commandBuffer];
    _encoder = [_commandBuffer computeCommandEncoder];
  	...	setup encoder and execute
		[_encoder release];
		[_commandBuffer release];
//encoder successfully released, but buffer still present and retain count = 1
		_encoder = nil;
    _commandBuffer = nil;
}

In result of this code program just eat all available memory.

How can i fix this issue?

Working sample with issue

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Answer 1

Ceylo OP

Oct ’20

In your simplified example, did adding an autorelease pool fixed it? Just to know if it's the culprit.

0

Answer 2

Vilgeforc OP

Oct ’20

Yes, @autorelease in "for" will fix the issue. But, unfortunately i can't use it in real app:(

0