mirror of
https://github.com/luau-lang/luau.git
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3d74a8f4d4
- Improve type error messages for argument count mismatch in certain cases - Fix type checking variadic returns when the type is incompatible which type checked in certain cases - Reduce size of upvalue objects by 8 bytes on 64-bit platforms - Reduce I$ footprint of interpreter by 1.5KB - Reduce GC pause during atomic stage for programs with a lot of threads - Remove support for bytecode v2
51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#pragma once
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#include <vector>
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#include <stdint.h>
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#include <stddef.h>
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namespace Luau
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{
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namespace CodeGen
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{
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struct CodeAllocator
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{
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CodeAllocator(size_t blockSize, size_t maxTotalSize);
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~CodeAllocator();
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// Places data and code into the executable page area
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// To allow allocation while previously allocated code is already running, allocation has page granularity
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// It's important to group functions together so that page alignment won't result in a lot of wasted space
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bool allocate(uint8_t* data, size_t dataSize, uint8_t* code, size_t codeSize, uint8_t*& result, size_t& resultSize, uint8_t*& resultCodeStart);
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// Provided to callbacks
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void* context = nullptr;
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// Called when new block is created to create and setup the unwinding information for all the code in the block
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// If data is placed inside the block itself (some platforms require this), we also return 'unwindDataSizeInBlock'
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void* (*createBlockUnwindInfo)(void* context, uint8_t* block, size_t blockSize, size_t& unwindDataSizeInBlock) = nullptr;
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// Called to destroy unwinding information returned by 'createBlockUnwindInfo'
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void (*destroyBlockUnwindInfo)(void* context, void* unwindData) = nullptr;
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static const size_t kMaxUnwindDataSize = 128;
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bool allocateNewBlock(size_t& unwindInfoSize);
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// Current block we use for allocations
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uint8_t* blockPos = nullptr;
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uint8_t* blockEnd = nullptr;
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// All allocated blocks
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std::vector<uint8_t*> blocks;
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std::vector<void*> unwindInfos;
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size_t blockSize = 0;
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size_t maxTotalSize = 0;
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};
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} // namespace CodeGen
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} // namespace Luau
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