35 lines
2.6 KiB
Plaintext
35 lines
2.6 KiB
Plaintext
[video output=day346 member=cmuratori stream_platform=twitch stream_username=handmade_hero project=code title="Consolidating Memory Block Headers" vod_platform=youtube id=XBft9E6NBDU annotator=Miblo]
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[0:11][Recap and set the stage for the day]
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[1:07][Run the game and assess our current situation]
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[3:22][Blackboard: Memory Protection]
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[7:08][Consider sharing the memory protection block with the operating system]
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[10:10][handmade_platform.h: Introduce platform_memory_block struct which is shared with win32_memory_block]
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[12:08][handmade_platform.h: Collapse the memory_block_chain into platform_memory_block]
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[15:31][handmade_memory.h: Make PushSize_() use our new platform-provided struct]
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[22:29][handmade_memory.h: Make Clear() and FreeLastBlock() operate on this struct]
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[24:48][win32_handmade.cpp: Rewrite PLATFORM_ALLOCATE_MEMORY() and PLATFORM_DEALLOCATE_MEMORY() to implement our new shared scheme]
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[30:30][Run the game and fix miscellaneous bugs]
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[33:08][Run the game to see that we're running okay]
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[33:39][win32_handmade.cpp: Enable PLATFORM_ALLOCATE_MEMORY() to perform overflow checking]
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[39:57][Blackboard: Checking for any set bits]
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[41:35][win32_handmade.cpp: Continue enabling overflow checking]
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[43:39][Run the game to see it successfully catch our overflow bug]
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[44:18][handmade_world.cpp: Remove that bug, run it again, crash in PushAndNullTerminate() and investigate why]
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[46:23][Calculate what we would expect]
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[48:17][Step through PushSize_() to see what it's computing]
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[52:17][Consider our choices for getting the correct alignment]
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[53:57][handmade_memory.h: Enable PushSize_() to compute the size using the alignment]
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[54:37][Run the game to find that we are maintaining alignment]
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[55:45][handmade_memory.h: Prevent PushSize_() from enabling the bounds checking, run the game and try looped code editing]
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[56:19][Investigate what's happening with the SourceBlock.Size][quote 532]
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[58:12][win32_handmade.cpp: Make PLATFORM_ALLOCATE_MEMORY() set the PageSize directly to aid our investigations]
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[1:01:57][Q&A][:speech]
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[1:02:37][@insobot][Bashing Tim Berners-Lee, inventor of the outer loop from 0 to freee everything?]
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[1:02:57]["It's kind of like insobot is the beat poet of our generation"][quote 533]
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[1:03:51][@pragmascrypt][Maybe set the default alignment to 1 when in memory checking mode?]
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[1:04:18][todo.txt: Update the TODO list]
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[1:05:03][@danyguag][I know this is a little off-topic to what you are currently doing on stream, but what role does a software driver play if any at all?]
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[1:06:56][@danyguag][No, you can make a C++ project that enables you to use resources that you can't use in user mode in the kernel]
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[1:10:52][Done][:speech]
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[/video]
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