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authorian <ian@138bc75d-0d04-0410-961f-82ee72b054a4>2015-10-31 00:59:47 +0000
committerian <ian@138bc75d-0d04-0410-961f-82ee72b054a4>2015-10-31 00:59:47 +0000
commit4a3da3a8a45d5496118798146de1fa4e5798ed5a (patch)
tree13beeaed3698c61903fe93fb1ce70bd9b18d4e7f /libgo/go/runtime/slice.go
parentcd529f4d86a17a3e8959f2cb5ac7132a841ab6f1 (diff)
downloadgcc-4a3da3a8a45d5496118798146de1fa4e5798ed5a.tar.gz
runtime: Remove now unnecessary pad field from ParFor.
It is not needed due to the removal of the ctx field. Reviewed-on: https://go-review.googlesource.com/16525 git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@229616 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libgo/go/runtime/slice.go')
-rw-r--r--libgo/go/runtime/slice.go139
1 files changed, 0 insertions, 139 deletions
diff --git a/libgo/go/runtime/slice.go b/libgo/go/runtime/slice.go
deleted file mode 100644
index 171087d7f6f..00000000000
--- a/libgo/go/runtime/slice.go
+++ /dev/null
@@ -1,139 +0,0 @@
-// Copyright 2009 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 runtime
-
-import (
- "unsafe"
-)
-
-type sliceStruct struct {
- array unsafe.Pointer
- len int
- cap int
-}
-
-// TODO: take uintptrs instead of int64s?
-func makeslice(t *slicetype, len64 int64, cap64 int64) sliceStruct {
- // NOTE: The len > MaxMem/elemsize check here is not strictly necessary,
- // but it produces a 'len out of range' error instead of a 'cap out of range' error
- // when someone does make([]T, bignumber). 'cap out of range' is true too,
- // but since the cap is only being supplied implicitly, saying len is clearer.
- // See issue 4085.
- len := int(len64)
- if len64 < 0 || int64(len) != len64 || t.elem.size > 0 && uintptr(len) > maxmem/uintptr(t.elem.size) {
- panic(errorString("makeslice: len out of range"))
- }
- cap := int(cap64)
- if cap < len || int64(cap) != cap64 || t.elem.size > 0 && uintptr(cap) > maxmem/uintptr(t.elem.size) {
- panic(errorString("makeslice: cap out of range"))
- }
- p := newarray(t.elem, uintptr(cap))
- return sliceStruct{p, len, cap}
-}
-
-// TODO: take uintptr instead of int64?
-func growslice(t *slicetype, old sliceStruct, n int64) sliceStruct {
- if n < 1 {
- panic(errorString("growslice: invalid n"))
- }
-
- cap64 := int64(old.cap) + n
- cap := int(cap64)
-
- if int64(cap) != cap64 || cap < old.cap || t.elem.size > 0 && uintptr(cap) > maxmem/uintptr(t.elem.size) {
- panic(errorString("growslice: cap out of range"))
- }
-
- if raceenabled {
- callerpc := getcallerpc(unsafe.Pointer(&t))
- racereadrangepc(old.array, uintptr(old.len*int(t.elem.size)), callerpc, funcPC(growslice))
- }
-
- et := t.elem
- if et.size == 0 {
- return sliceStruct{old.array, old.len, cap}
- }
-
- newcap := old.cap
- if newcap+newcap < cap {
- newcap = cap
- } else {
- for {
- if old.len < 1024 {
- newcap += newcap
- } else {
- newcap += newcap / 4
- }
- if newcap >= cap {
- break
- }
- }
- }
-
- if uintptr(newcap) >= maxmem/uintptr(et.size) {
- panic(errorString("growslice: cap out of range"))
- }
- lenmem := uintptr(old.len) * uintptr(et.size)
- capmem := goroundupsize(uintptr(newcap) * uintptr(et.size))
- newcap = int(capmem / uintptr(et.size))
- var p unsafe.Pointer
- if et.kind&kindNoPointers != 0 {
- p = rawmem(capmem)
- memclr(add(p, lenmem), capmem-lenmem)
- } else {
- // Note: can't use rawmem (which avoids zeroing of memory), because then GC can scan unitialized memory
- p = newarray(et, uintptr(newcap))
- }
- memmove(p, old.array, lenmem)
-
- return sliceStruct{p, old.len, newcap}
-}
-
-func slicecopy(to sliceStruct, fm sliceStruct, width uintptr) int {
- if fm.len == 0 || to.len == 0 || width == 0 {
- return 0
- }
-
- n := fm.len
- if to.len < n {
- n = to.len
- }
-
- if raceenabled {
- callerpc := getcallerpc(unsafe.Pointer(&to))
- pc := funcPC(slicecopy)
- racewriterangepc(to.array, uintptr(n*int(width)), callerpc, pc)
- racereadrangepc(fm.array, uintptr(n*int(width)), callerpc, pc)
- }
-
- size := uintptr(n) * width
- if size == 1 { // common case worth about 2x to do here
- // TODO: is this still worth it with new memmove impl?
- *(*byte)(to.array) = *(*byte)(fm.array) // known to be a byte pointer
- } else {
- memmove(to.array, fm.array, size)
- }
- return int(n)
-}
-
-func slicestringcopy(to []byte, fm string) int {
- if len(fm) == 0 || len(to) == 0 {
- return 0
- }
-
- n := len(fm)
- if len(to) < n {
- n = len(to)
- }
-
- if raceenabled {
- callerpc := getcallerpc(unsafe.Pointer(&to))
- pc := funcPC(slicestringcopy)
- racewriterangepc(unsafe.Pointer(&to[0]), uintptr(n), callerpc, pc)
- }
-
- memmove(unsafe.Pointer(&to[0]), unsafe.Pointer((*stringStruct)(unsafe.Pointer(&fm)).str), uintptr(n))
- return n
-}