diff options
Diffstat (limited to 'src/runtime/type.go')
| -rw-r--r-- | src/runtime/type.go | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/src/runtime/type.go b/src/runtime/type.go index 660b45ef39..b5e37b9886 100644 --- a/src/runtime/type.go +++ b/src/runtime/type.go @@ -17,9 +17,10 @@ import "unsafe" type tflag uint8 const ( - tflagUncommon tflag = 1 << 0 - tflagExtraStar tflag = 1 << 1 - tflagNamed tflag = 1 << 2 + tflagUncommon tflag = 1 << 0 + tflagExtraStar tflag = 1 << 1 + tflagNamed tflag = 1 << 2 + tflagRegularMemory tflag = 1 << 3 // equal and hash can treat values of this type as a single region of t.size bytes ) // Needs to be in sync with ../cmd/link/internal/ld/decodesym.go:/^func.commonsize, @@ -33,7 +34,9 @@ type _type struct { align uint8 fieldalign uint8 kind uint8 - alg *typeAlg + // function for comparing objects of this type + // (ptr to object A, ptr to object B) -> ==? + equal func(unsafe.Pointer, unsafe.Pointer) bool // gcdata stores the GC type data for the garbage collector. // If the KindGCProg bit is set in kind, gcdata is a GC program. // Otherwise it is a ptrmask bitmap. See mbitmap.go for details. @@ -358,10 +361,12 @@ type interfacetype struct { } type maptype struct { - typ _type - key *_type - elem *_type - bucket *_type // internal type representing a hash bucket + typ _type + key *_type + elem *_type + bucket *_type // internal type representing a hash bucket + // function for hashing keys (ptr to key, seed) -> hash + hasher func(unsafe.Pointer, uintptr) uintptr keysize uint8 // size of key slot elemsize uint8 // size of elem slot bucketsize uint16 // size of bucket @@ -497,6 +502,16 @@ func (n name) pkgPath() string { return pkgPathName.name() } +func (n name) isBlank() bool { + if n.bytes == nil { + return false + } + if n.nameLen() != 1 { + return false + } + return *n.data(3) == '_' +} + // typelinksinit scans the types from extra modules and builds the // moduledata typemap used to de-duplicate type pointers. func typelinksinit() { |