实现基础web服务器

vendor/github.com/bytedance/sonic/loader/mmap_unix.go

@@ -0,0 +1,45 @@
+//go:build darwin || linux
+// +build darwin linux
+
+/**
+ * Copyright 2023 ByteDance Inc.
+ *
+ * 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 loader
+
+import (
+    `syscall`
+)
+
+const (
+    _AP = syscall.MAP_ANON  | syscall.MAP_PRIVATE
+    _RX = syscall.PROT_READ | syscall.PROT_EXEC
+    _RW = syscall.PROT_READ | syscall.PROT_WRITE
+)
+
+
+func mmap(nb int) uintptr {
+    if m, _, e := syscall.RawSyscall6(syscall.SYS_MMAP, 0, uintptr(nb), _RW, _AP, 0, 0); e != 0 {
+        panic(e)
+    } else {
+        return m
+    }
+}
+
+func mprotect(p uintptr, nb int) {
+    if _, _, err := syscall.RawSyscall(syscall.SYS_MPROTECT, p, uintptr(nb), _RX); err != 0 {
+        panic(err)
+    }
+}