am 2708f19b: Merge "Update API level 9 sysroot to allow static C++ destructors to be called on dlclose()." into gingerbread

Merge commit '2708f19ba33163b1ac0c5ea2758d0c09d97e8cc0' into gingerbread-plus-aosp

* commit '2708f19ba33163b1ac0c5ea2758d0c09d97e8cc0':
  Update API level 9 sysroot to allow static C++ destructors to be called on dlclose().

ndk/.gitignore

@@ -2,5 +2,9 @@ samples/*/libs/
 samples/*/obj/
 samples/*/bin/
 samples/*/gen/
+tests/*/libs
+tests/*/obj/
+tests/*/bin/
+tests/*/gen/
 local.properties
 build.xml

ndk/tests/dlclose-destruction/jni/Android.mk

@@ -0,0 +1,12 @@
+# A small sample used to demonstrate static C++ destructors
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libtest1
+LOCAL_SRC_FILES := libtest1.cpp
+include $(BUILD_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := test_dlclose_destruction
+LOCAL_SRC_FILES := main.c
+include $(BUILD_EXECUTABLE)

ndk/tests/dlclose-destruction/jni/Application.mk

@@ -0,0 +1 @@
+APP_PLATFORM := android-9

ndk/tests/dlclose-destruction/jni/libtest1.cpp

@@ -0,0 +1,31 @@
+#include <stddef.h>
+#include "libtest1.h"
+
+class Foo
+{
+public:
+    Foo() { mAddress = NULL; }
+    void setAddress(int *px);
+    ~Foo();
+private:
+    int *mAddress;
+};
+
+void Foo::setAddress(int *px)
+{
+    mAddress = px;
+    *mAddress = 1;
+}
+
+Foo::~Foo()
+{
+    if (mAddress)
+        *mAddress = 2;
+}
+
+static Foo foo;
+
+extern "C" void test1_set(int *px)
+{
+    foo.setAddress(px);
+}

ndk/tests/dlclose-destruction/jni/libtest1.h

@@ -0,0 +1,21 @@
+#ifndef LIBTEST1_H
+#define LIBTEST1_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* define in libtest1, will be called dynamically through dlsym()
+ * by main.c. This function receives the address of an integer
+ * and sets its value to 1.
+ *
+ * when the library is unloaded, the value is set to 2 automatically
+ * by the destructor there.
+ */
+extern void test1_set(int *px);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBTEST1_H */

ndk/tests/dlclose-destruction/jni/main.c

@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <dlfcn.h>
+
+typedef void (*test_func_t)(int *px);
+int  x;
+
+int main(void)
+{
+    void*  lib = dlopen("libtest1.so", RTLD_NOW);
+    test_func_t test_func;
+
+    if (lib == NULL) {
+        fprintf(stderr, "Can't load library: %s\n", dlerror());
+        return 1;
+    }
+
+    printf("Loaded !\n");
+
+    test_func = dlsym(lib, "test1_set");
+    if (test_func == NULL) {
+        fprintf(stderr, "Can't find test function\n");
+        return 2;
+    }
+
+    x = 0;
+    test_func(&x);
+
+    if (x == 1) {
+        printf("Test function called !\n");
+    } else {
+        fprintf(stderr, "Test function failed to set variable !\n");
+        return 3;
+    }
+
+    dlclose(lib);
+    printf("Unloaded !\n");
+
+    if (x == 2) {
+        printf("Test destructor called !\n");
+    } else if (x == 1) {
+        fprintf(stderr, "Test destructor was *not* called !\n");
+        return 4;
+    } else {
+        fprintf(stderr, "Test destructor called but returned invalid value (%d)\n", x);
+        return 5;
+    }
+    return 0;
+}