misc/cgo/testcshared: test -buildmode=c-shared
Followed the same test pattern in misc/cgo/testcarchive.
Change-Id: I2f863b5c24a28f0b38b0128ed3e8a92c17fb5b9f
Reviewed-on: https://go-review.googlesource.com/8985
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/misc/cgo/testcshared/main0.c b/misc/cgo/testcshared/main0.c
new file mode 100644
index 0000000..fa0eb4a
--- /dev/null
+++ b/misc/cgo/testcshared/main0.c
@@ -0,0 +1,33 @@
+// Copyright 2015 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.
+
+#include <stdint.h>
+#include <stdio.h>
+
+// Tests libgo.so to export the following functions.
+// int8_t DidInitRun();
+// int8_t DidMainRun();
+// int32_t FromPkg();
+int main(void) {
+ int8_t ran_init = DidInitRun();
+ if (!ran_init) {
+ fprintf(stderr, "ERROR: DidInitRun returned unexpected results: %d\n",
+ ran_init);
+ return 1;
+ }
+ int8_t ran_main = DidMainRun();
+ if (ran_main) {
+ fprintf(stderr, "ERROR: DidMainRun returned unexpected results: %d\n",
+ ran_main);
+ return 1;
+ }
+ int32_t from_pkg = FromPkg();
+ if (from_pkg != 1024) {
+ fprintf(stderr, "ERROR: FromPkg=%d, want %d\n", from_pkg, 1024);
+ return 1;
+ }
+ // test.bash looks for "PASS" to ensure this program has reached the end.
+ printf("PASS\n");
+ return 0;
+}
diff --git a/misc/cgo/testcshared/main1.c b/misc/cgo/testcshared/main1.c
new file mode 100644
index 0000000..420dd1e
--- /dev/null
+++ b/misc/cgo/testcshared/main1.c
@@ -0,0 +1,69 @@
+// Copyright 2015 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.
+
+#include <stdint.h>
+#include <stdio.h>
+#include <dlfcn.h>
+
+int check_int8(void* handle, const char* fname, int8_t want) {
+ int8_t (*fn)();
+ fn = (int8_t (*)())dlsym(handle, fname);
+ if (!fn) {
+ fprintf(stderr, "ERROR: missing %s: %s\n", fname, dlerror());
+ return 1;
+ }
+ signed char ret = fn();
+ if (ret != want) {
+ fprintf(stderr, "ERROR: %s=%d, want %d\n", fname, ret, want);
+ return 1;
+ }
+ return 0;
+}
+
+int check_int32(void* handle, const char* fname, int32_t want) {
+ int32_t (*fn)();
+ fn = (int32_t (*)())dlsym(handle, fname);
+ if (!fn) {
+ fprintf(stderr, "ERROR: missing %s: %s\n", fname, dlerror());
+ return 1;
+ }
+ int32_t ret = fn();
+ if (ret != want) {
+ fprintf(stderr, "ERROR: %s=%d, want %d\n", fname, ret, want);
+ return 1;
+ }
+ return 0;
+}
+
+// Tests libgo.so to export the following functions.
+// int8_t DidInitRun() // returns true
+// int8_t DidMainRun() // returns true
+// int32_t FromPkg() // returns 1024
+int main(int argc, char** argv) {
+ void* handle = dlopen(argv[1], RTLD_LAZY | RTLD_GLOBAL);
+ if (!handle) {
+ fprintf(stderr, "ERROR: failed to open the shared library: %s\n",
+ dlerror());
+ return 2;
+ }
+
+ int ret = 0;
+ ret = check_int8(handle, "DidInitRun", 1);
+ if (ret != 0) {
+ return ret;
+ }
+
+ ret = check_int8(handle, "DidMainRun", 0);
+ if (ret != 0) {
+ return ret;
+ }
+
+ ret = check_int32(handle, "FromPkg", 1024);
+ if (ret != 0) {
+ return ret;
+ }
+ // test.bash looks for "PASS" to ensure this program has reached the end.
+ printf("PASS\n");
+ return 0;
+}
diff --git a/misc/cgo/testcshared/src/libgo/libgo.go b/misc/cgo/testcshared/src/libgo/libgo.go
new file mode 100644
index 0000000..facf1fb
--- /dev/null
+++ b/misc/cgo/testcshared/src/libgo/libgo.go
@@ -0,0 +1,47 @@
+// Copyright 2015 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 main
+
+import (
+ _ "p"
+ "syscall"
+ "time"
+)
+
+import "C"
+
+var initCh = make(chan int, 1)
+var ranMain bool
+
+func init() {
+ // emulate an exceedingly slow package initialization function
+ time.Sleep(100 * time.Millisecond)
+ initCh <- 42
+}
+
+func main() {
+ ranMain = true
+ panic("FAIL: main ran")
+}
+
+//export DidInitRun
+func DidInitRun() bool {
+ select {
+ case x := <-initCh:
+ if x != 42 {
+ // Just in case initCh was not correctly made.
+ println("want init value of 42, got: ", x)
+ syscall.Exit(2)
+ }
+ return true
+ default:
+ return false
+ }
+}
+
+//export DidMainRun
+func DidMainRun() bool {
+ return ranMain
+}
diff --git a/misc/cgo/testcshared/src/p/p.go b/misc/cgo/testcshared/src/p/p.go
new file mode 100644
index 0000000..82b445c
--- /dev/null
+++ b/misc/cgo/testcshared/src/p/p.go
@@ -0,0 +1,10 @@
+// Copyright 2015 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 p
+
+import "C"
+
+//export FromPkg
+func FromPkg() int32 { return 1024 }
diff --git a/misc/cgo/testcshared/test.bash b/misc/cgo/testcshared/test.bash
new file mode 100755
index 0000000..61f80ea
--- /dev/null
+++ b/misc/cgo/testcshared/test.bash
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+# Copyright 2015 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.
+
+set -e
+
+function cleanup() {
+ rm libgo.so testp
+}
+trap cleanup EXIT
+
+GOPATH=$(pwd) go build -buildmode=c-shared -o libgo.so src/libgo/libgo.go
+
+$(go env CC) $(go env GOGCCFLAGS) -o testp main0.c libgo.so
+output=$(LD_LIBRARY_PATH=$LD_LIBRARY_PATH:. ./testp)
+# testp prints PASS at the end of its execution.
+if [ "$output" != "PASS" ]; then
+ echo "FAIL: got $output"
+ exit 1
+fi
+
+$(go env CC) $(go env GOGCCFLAGS) -o testp main1.c -ldl
+output=$(./testp ./libgo.so)
+# testp prints PASS at the end of its execution.
+if [ "$output" != "PASS" ]; then
+ echo "FAIL: got $output"
+ exit 1
+fi
