2017-12-06 22:26:13 +00:00
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[video member=cmuratori stream_platform=twitch stream_username=handmade_hero project=code title="Platform-independent Game Memory" vod_platform=youtube id=tcENxzeTjbI annotator=jacebennett annotator=Miblo]
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[0:58][Intro to memory management.]
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[4:07][We won't be allocating.]
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[5:17]['Allocation Festivals']
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[5:35][Why talk about allocation now?]
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[7:35][What would 'normally' happen]
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[11:55][Problem: dynamic allocation spreads managment across code, makes it opaque]
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[13:18][Problem: allocation is another trip through the platform layer]
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[15:03][What we will do instead]
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[17:25][Adding memory to the platform abstraction]
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[20:41][Initializing with the new model]
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[21:17][Allocating the memory in the platform]
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[26:33][Yes, Virginia, memory comes zeroed.]
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[28:40][Put it where you want it.]
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[33:33][Debugging: Integral promotion]
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[36:38][Note that the clear to zero is cheap.]
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[37:27][Memory? Check.]
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[40:28][Intro to assertions]
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[44:33][Avoiding the runtime cost]
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[45:03][Build options]
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[48:08][Build options for memory]
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[50:31][Combining allocations]
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[51:30][Debugging]
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[55:07][Mission accomplished.]
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[56:24][TODO: Pass timing info to game]
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2018-03-07 21:48:09 +00:00
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[58:24][Q&A][:speech]
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2017-12-06 22:26:13 +00:00
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[59:20][Reasoning behind Main Memory Pool vs Dynamic Allocation?]
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[1:03:31][Why use the void* in game_memory?]
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[1:04:13][Elaborate on Permanent vs Transient storage?]
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[1:07:03][Will the code be on github \[be public\]?]
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[1:07:38][What do you mean by 'avoiding round trips'?]
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[1:12:55][Are you going to keep the sound buffer allocation seperate?]
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[1:13:14][Why didn't you use libc's assert macro?]
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[1:13:43][You're assert has issues.]
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[1:14:37][Why did you pick a BaseAddress so high up (2TB)?]
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[1:15:09][What is the difference between the memory columns in Task Manager?]
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[1:17:41][Tangent: PerfMon]
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[1:20:39][Recommended: Channel 9 video: Mark Russinovich Mysteries of Windows Memory Managment.]
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[1:21:04][Are there any guidelines for choosing a safe BaseAddress?]
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[1:21:46][What happens if the user doesn't have enough RAM?]
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[1:22:40][Isn't worrying about not having enough memory silly?]
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[1:23:25][Why are you using pools instead of static allocation?]
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[1:23:52][What mechanism will we use to assign memory out of our pools?]
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[1:24:17][Having Q&A after the episode is like code review. Was that your intent?]
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[1:25:16][What about i.e. modding support? You can't tell in advance if you've allowed enough memory for someone else's mod.]
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[1:26:34][Will our 64-bit allocation break on Raspberry Pi?]
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[1:27:27][Will the Transient storage be freed, or will you just take off its end until its gone?]
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[1:27:45][Is it better to keep track of how much memory is freed instead of total size?]
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[1:28:06][Why are you reluctant to have to constants be 64-bit integers?]
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[1:29:27][Did you pass different flags to VirtualAlloc for permanent and transient storage?]
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[1:29:54][What are the 'other reasons' for specifying a BaseAddress.]
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[1:31:01][Is it possible the pool will be fragmented?]
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2018-03-07 21:48:09 +00:00
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[1:33:10][Sign Off][:speech]
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2017-12-06 22:26:13 +00:00
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[/video]
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