am a268ba5f: am c245592b: Merge changes I551e0f3d,I26d84cf5,I27c993d1 into idea133 automerge: 4e42336

* commit 'a268ba5f6bbbc67904124f7368f617dbb3fae6ef':
  emulator/opengl: Remove out-of-process handling code.
  emulator/opengl: refactor Thread class.
  emulator/opengl: refactor shared library handling.

1 files changed, 85 insertions, 0 deletions

diff --git a/emulator/opengl/shared/emugl/common/shared_library.h b/emulator/opengl/shared/emugl/common/shared_library.h
new file mode 100644
index 0000000..38d25bd
--- /dev/null
+++ b/emulator/opengl/shared/emugl/common/shared_library.h
@@ -0,0 +1,85 @@
+// Copyright (C) 2014 The Android Open Source Project
+//
+// 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.
+
+#ifndef EMUGL_COMMON_SHARED_LIBRARY_H
+#define EMUGL_COMMON_SHARED_LIBRARY_H
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+namespace emugl {
+
+// A class used to open a platform-specific shared library, and probe
+// it for symbols. Usage is the following:
+//
+//    // Open the library.
+//    SharedLibrary* library = SharedLibrary::open("libFoo");
+//    if (!library) {
+//        ... could not find / open library!
+//    }
+//
+//    //Probe for function symbol.
+//    FunctionPtr my_func = library->findSymbol("my_func");
+//
+//    // Closes library/
+//    delete library;
+//
+class SharedLibrary {
+public:
+    // Open a given library. |libraryName| can be either a full library
+    // path, or a simple name without an extension. On success, returns
+    // a new SharedLibrary instance that must be deleted by the caller.
+    static SharedLibrary* open(const char* libraryName);
+
+    // Closes an existing SharedLibrary instance.
+    ~SharedLibrary();
+
+    // Generic function pointer type, for values returned by the
+    // findSymbol() method.
+    typedef void (*FunctionPtr)(void);
+
+    // Probe a given SharedLibrary instance to find a symbol named
+    // |symbolName| in it. Return its address as a FunctionPtr, or
+    // NULL if the symbol is not found.
+    FunctionPtr findSymbol(const char* symbolName);
+
+private:
+#ifdef _WIN32
+    typedef HMODULE HandleType;
+#else
+    typedef void* HandleType;
+#endif
+
+    // Constructor intentionally hidden.
+    SharedLibrary(HandleType);
+
+    HandleType mLib;
+};
+
+// Macro to compose emugl shared library name under various OS and bitness
+// eg.
+//     on x86_64, EMUGL_LIBNAME("foo") --> "lib64foo"
+
+#if defined(__x86_64__)
+#  define EMUGL_LIBNAME(name) "lib64" name
+#elif defined(__i386__)
+#  define EMUGL_LIBNAME(name) "lib" name
+#else
+/* This header is included by target w/o using EMUGL_LIBNAME().  Don't #error, leave it undefined */
+#endif
+
+}  // namespace emugl
+
+#endif  // EMUGL_COMMON_SHARED_LIBRARY_H