文件操作 - compiletype.go
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文件: /usr/share/go-1.23/src/internal/abi/compiletype.go
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// Copyright 2023 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package abi // These functions are the build-time version of the Go type data structures. // Their contents must be kept in sync with their definitions. // Because the host and target type sizes can differ, the compiler and // linker cannot use the host information that they might get from // either unsafe.Sizeof and Alignof, nor runtime, reflect, or reflectlite. // CommonSize returns sizeof(Type) for a compilation target with a given ptrSize func CommonSize(ptrSize int) int { return 4*ptrSize + 8 + 8 } // StructFieldSize returns sizeof(StructField) for a compilation target with a given ptrSize func StructFieldSize(ptrSize int) int { return 3 * ptrSize } // UncommonSize returns sizeof(UncommonType). This currently does not depend on ptrSize. // This exported function is in an internal package, so it may change to depend on ptrSize in the future. func UncommonSize() uint64 { return 4 + 2 + 2 + 4 + 4 } // TFlagOff returns the offset of Type.TFlag for a compilation target with a given ptrSize func TFlagOff(ptrSize int) int { return 2*ptrSize + 4 } // ITabTypeOff returns the offset of ITab.Type for a compilation target with a given ptrSize func ITabTypeOff(ptrSize int) int { return ptrSize }
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