| // 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 runtime | |
| import "unsafe" | |
| func sbrk(n uintptr) unsafe.Pointer { | |
| bl := bloc | |
| n = memRound(n) | |
| if bl+n > blocMax { | |
| grow := (bl + n - blocMax) / physPageSize | |
| size := growMemory(int32(grow)) | |
| if size < 0 { | |
| return nil | |
| } | |
| resetMemoryDataView() | |
| blocMax = bl + n | |
| } | |
| bloc += n | |
| return unsafe.Pointer(bl) | |
| } | |
| // Implemented in src/runtime/sys_wasm.s | |
| func growMemory(pages int32) int32 | |
| func currentMemory() int32 |