Initial commit

vendor/github.com/cockroachdb/pebble/internal/rawalloc/rawalloc.go

@@ -0,0 +1,24 @@
+// Copyright 2018 The Cockroach Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+package rawalloc
+
+// New returns a new byte slice of the specified length and capacity where the
+// backing memory is uninitialized. This differs from make([]byte) which
+// guarantees that the backing memory for the slice is initialized to zero. Use
+// carefully.
+func New(len, cap int) []byte {
+	ptr := mallocgc(uintptr(cap), nil, false)
+	return (*[maxArrayLen]byte)(ptr)[:len:cap]
+}

vendor/github.com/cockroachdb/pebble/internal/rawalloc/rawalloc_32bit.go

@@ -0,0 +1,22 @@
+// Copyright 2014 The Cockroach Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+//go:build 386 || amd64p32 || arm || armbe || ppc || sparc
+// +build 386 amd64p32 arm armbe ppc sparc
+
+package rawalloc
+
+const (
+	maxArrayLen = 1<<31 - 1
+)

vendor/github.com/cockroachdb/pebble/internal/rawalloc/rawalloc_64bit.go

@@ -0,0 +1,22 @@
+// Copyright 2014 The Cockroach Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+//go:build amd64 || arm64 || arm64be || ppc64 || ppc64le || mips64 || mips64le || s390x || sparc64 || riscv64 || loong64
+// +build amd64 arm64 arm64be ppc64 ppc64le mips64 mips64le s390x sparc64 riscv64 loong64
+
+package rawalloc
+
+const (
+	maxArrayLen = 1<<50 - 1
+)

vendor/github.com/cockroachdb/pebble/internal/rawalloc/rawalloc_gccgo.go

@@ -0,0 +1,23 @@
+// Copyright 2018 The Cockroach Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+//go:build gccgo
+// +build gccgo
+
+package rawalloc
+
+import "unsafe"
+
+//extern runtime.mallocgc
+func mallocgc(size uintptr, typ unsafe.Pointer, needzero bool) unsafe.Pointer

vendor/github.com/cockroachdb/pebble/internal/rawalloc/rawalloc_go1.9.go

@@ -0,0 +1,28 @@
+// Copyright 2018 The Cockroach Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+//go:build gc && go1.9
+// +build gc,go1.9
+
+package rawalloc
+
+import "unsafe"
+
+// The go:linkname directives provides backdoor access to private functions in
+// the runtime. Below we're accessing the mallocgc function. Note that this
+// access is necessarily tied to a specific Go release which is why this file
+// is protected by a build tag.
+
+//go:linkname mallocgc runtime.mallocgc
+func mallocgc(size uintptr, typ unsafe.Pointer, needzero bool) unsafe.Pointer

vendor/github.com/cockroachdb/pebble/internal/rawalloc/rawalloc_mips.go

@@ -0,0 +1,22 @@
+// Copyright 2014 The Cockroach Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+//go:build mips || mipsle || mips64p32 || mips64p32le
+// +build mips mipsle mips64p32 mips64p32le
+
+package rawalloc
+
+const (
+	maxArrayLen = 1 << 30
+)