1 files changed, 165 insertions, 0 deletions
diff --git a/go/golang/gocache/8f/8f35490f588bd24411a2ed70dc7534bc617daf193af4bcd3190fb890b4740439-d b/go/golang/gocache/8f/8f35490f588bd24411a2ed70dc7534bc617daf193af4bcd3190fb890b4740439-d
new file mode 100644
index 00000000..fa182f6f
--- /dev/null
+++ b/go/golang/gocache/8f/8f35490f588bd24411a2ed70dc7534bc617daf193af4bcd3190fb890b4740439-d
@@ -0,0 +1,165 @@
+// Code generated by cmd/cgo; DO NOT EDIT.
+
+//line /workdir/go/src/plugin/plugin_dlopen.go:1:1
+// Copyright 2016 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.
+
+// +build linux,cgo darwin,cgo
+
+package plugin; import _cgo_unsafe "unsafe"
+
+/*
+#cgo linux LDFLAGS: -ldl
+#include <dlfcn.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include <stdio.h>
+
+static uintptr_t pluginOpen(const char* path, char** err) {
+	void* h = dlopen(path, RTLD_NOW|RTLD_GLOBAL);
+	if (h == NULL) {
+		*err = (char*)dlerror();
+	}
+	return (uintptr_t)h;
+}
+
+static void* pluginLookup(uintptr_t h, const char* name, char** err) {
+	void* r = dlsym((void*)h, name);
+	if (r == NULL) {
+		*err = (char*)dlerror();
+	}
+	return r;
+}
+*/
+import _ "unsafe"
+
+import (
+	"errors"
+	"sync"
+	"unsafe"
+)
+
+// avoid a dependency on strings
+func lastIndexByte(s string, c byte) int {
+	for i := len(s) - 1; i >= 0; i-- {
+		if s[i] == c {
+			return i
+		}
+	}
+	return -1
+}
+
+func open(name string) (*Plugin, error) {
+	cPath := make([]byte, (_Ciconst_PATH_MAX)+1)
+	cRelName := make([]byte, len(name)+1)
+	copy(cRelName, name)
+	if (_Cfunc_realpath)(
+		(*_Ctype_char)(unsafe.Pointer(&cRelName[0])),
+		(*_Ctype_char)(unsafe.Pointer(&cPath[0]))) == nil {
+		return nil, errors.New(`plugin.Open("` + name + `"): realpath failed`)
+	}
+
+	filepath := (_Cfunc_GoString)((*_Ctype_char)(unsafe.Pointer(&cPath[0])))
+
+	pluginsMu.Lock()
+	if p := plugins[filepath]; p != nil {
+		pluginsMu.Unlock()
+		if p.err != "" {
+			return nil, errors.New(`plugin.Open("` + name + `"): ` + p.err + ` (previous failure)`)
+		}
+		<-p.loaded
+		return p, nil
+	}
+	var cErr *_Ctype_char
+	h := func(_cgo0 *_Ctype_char, _cgo1 **_Ctype_char) _Ctype_uintptr_t {;	_cgoCheckPointer(_cgo1, true);	return (_Cfunc_pluginOpen)(_cgo0, _cgo1);}((*_Ctype_char)(unsafe.Pointer(&cPath[0])), &cErr)
+	if h == 0 {
+		pluginsMu.Unlock()
+		return nil, errors.New(`plugin.Open("` + name + `"): ` + (_Cfunc_GoString)(cErr))
+	}
+	// TODO(crawshaw): look for plugin note, confirm it is a Go plugin
+	// and it was built with the correct toolchain.
+	if len(name) > 3 && name[len(name)-3:] == ".so" {
+		name = name[:len(name)-3]
+	}
+	if plugins == nil {
+		plugins = make(map[string]*Plugin)
+	}
+	pluginpath, syms, errstr := lastmoduleinit()
+	if errstr != "" {
+		plugins[filepath] = &Plugin{
+			pluginpath: pluginpath,
+			err:        errstr,
+		}
+		pluginsMu.Unlock()
+		return nil, errors.New(`plugin.Open("` + name + `"): ` + errstr)
+	}
+	// This function can be called from the init function of a plugin.
+	// Drop a placeholder in the map so subsequent opens can wait on it.
+	p := &Plugin{
+		pluginpath: pluginpath,
+		loaded:     make(chan struct{}),
+	}
+	plugins[filepath] = p
+	pluginsMu.Unlock()
+
+	initStr := make([]byte, len(pluginpath)+6)
+	copy(initStr, pluginpath)
+	copy(initStr[len(pluginpath):], ".init")
+
+	initFuncPC := func(_cgo0 _Ctype_uintptr_t, _cgo1 *_Ctype_char, _cgo2 **_Ctype_char) _cgo_unsafe.Pointer {;	_cgoCheckPointer(_cgo2, true);	return (_Cfunc_pluginLookup)(_cgo0, _cgo1, _cgo2);}(h, (*_Ctype_char)(unsafe.Pointer(&initStr[0])), &cErr)
+	if initFuncPC != nil {
+		initFuncP := &initFuncPC
+		initFunc := *(*func())(unsafe.Pointer(&initFuncP))
+		initFunc()
+	}
+
+	// Fill out the value of each plugin symbol.
+	updatedSyms := map[string]interface{}{}
+	for symName, sym := range syms {
+		isFunc := symName[0] == '.'
+		if isFunc {
+			delete(syms, symName)
+			symName = symName[1:]
+		}
+
+		fullName := pluginpath + "." + symName
+		cname := make([]byte, len(fullName)+1)
+		copy(cname, fullName)
+
+		p := func(_cgo0 _Ctype_uintptr_t, _cgo1 *_Ctype_char, _cgo2 **_Ctype_char) _cgo_unsafe.Pointer {;	_cgoCheckPointer(_cgo2, true);	return (_Cfunc_pluginLookup)(_cgo0, _cgo1, _cgo2);}(h, (*_Ctype_char)(unsafe.Pointer(&cname[0])), &cErr)
+		if p == nil {
+			return nil, errors.New(`plugin.Open("` + name + `"): could not find symbol ` + symName + `: ` + (_Cfunc_GoString)(cErr))
+		}
+		valp := (*[2]unsafe.Pointer)(unsafe.Pointer(&sym))
+		if isFunc {
+			(*valp)[1] = unsafe.Pointer(&p)
+		} else {
+			(*valp)[1] = p
+		}
+		// we can't add to syms during iteration as we'll end up processing
+		// some symbols twice with the inability to tell if the symbol is a function
+		updatedSyms[symName] = sym
+	}
+	p.syms = updatedSyms
+
+	close(p.loaded)
+	return p, nil
+}
+
+func lookup(p *Plugin, symName string) (Symbol, error) {
+	if s := p.syms[symName]; s != nil {
+		return s, nil
+	}
+	return nil, errors.New("plugin: symbol " + symName + " not found in plugin " + p.pluginpath)
+}
+
+var (
+	pluginsMu sync.Mutex
+	plugins   map[string]*Plugin
+)
+
+// lastmoduleinit is defined in package runtime
+func lastmoduleinit() (pluginpath string, syms map[string]interface{}, errstr string)