merge tags/2.6.0 into trunk

6 files changed, 156 insertions, 9 deletions

diff --git a/src/google/protobuf/compiler/plugin.pb.h b/src/google/protobuf/compiler/plugin.pb.h
index b590d8df..815addd6 100644
--- a/src/google/protobuf/compiler/plugin.pb.h
+++ b/src/google/protobuf/compiler/plugin.pb.h
@@ -8,12 +8,12 @@
 
 #include <google/protobuf/stubs/common.h>
 
-#if GOOGLE_PROTOBUF_VERSION < 2005001
+#if GOOGLE_PROTOBUF_VERSION < 2006000
 #error This file was generated by a newer version of protoc which is
 #error incompatible with your Protocol Buffer headers.  Please update
 #error your headers.
 #endif
-#if 2005001 < GOOGLE_PROTOBUF_MIN_PROTOC_VERSION
+#if 2006000 < GOOGLE_PROTOBUF_MIN_PROTOC_VERSION
 #error This file was generated by an older version of protoc which is
 #error incompatible with your Protocol Buffer headers.  Please
 #error regenerate this file with a newer version of protoc.
diff --git a/src/google/protobuf/descriptor.pb.h b/src/google/protobuf/descriptor.pb.h
index 36d4d1b7..d5221e7f 100644
--- a/src/google/protobuf/descriptor.pb.h
+++ b/src/google/protobuf/descriptor.pb.h
@@ -8,12 +8,12 @@
 
 #include <google/protobuf/stubs/common.h>
 
-#if GOOGLE_PROTOBUF_VERSION < 2005001
+#if GOOGLE_PROTOBUF_VERSION < 2006000
 #error This file was generated by a newer version of protoc which is
 #error incompatible with your Protocol Buffer headers.  Please update
 #error your headers.
 #endif
-#if 2005001 < GOOGLE_PROTOBUF_MIN_PROTOC_VERSION
+#if 2006000 < GOOGLE_PROTOBUF_MIN_PROTOC_VERSION
 #error This file was generated by an older version of protoc which is
 #error incompatible with your Protocol Buffer headers.  Please
 #error regenerate this file with a newer version of protoc.
diff --git a/src/google/protobuf/stubs/atomicops.h b/src/google/protobuf/stubs/atomicops.h
index 32404c23..76c026c9 100644
--- a/src/google/protobuf/stubs/atomicops.h
+++ b/src/google/protobuf/stubs/atomicops.h
@@ -192,6 +192,8 @@ GOOGLE_PROTOBUF_ATOMICOPS_ERROR
 #include <google/protobuf/stubs/atomicops_internals_mips_gcc.h>
 #elif defined(__native_client__)
 #include <google/protobuf/stubs/atomicops_internals_pnacl.h>
+#elif (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4))
+#include <google/protobuf/stubs/atomicops_internals_generic_gcc.h>
 #else
 GOOGLE_PROTOBUF_ATOMICOPS_ERROR
 #endif
diff --git a/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h b/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
new file mode 100644
index 00000000..e30bb444
--- /dev/null
+++ b/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
@@ -0,0 +1,137 @@
+// Copyright 2013 Red Hat Inc.  All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Red Hat Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// This file is an internal atomic implementation, use atomicops.h instead.
+
+#ifndef GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_GENERIC_GCC_H_
+#define GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_GENERIC_GCC_H_
+
+namespace google {
+namespace protobuf {
+namespace internal {
+
+inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
+                                         Atomic32 old_value,
+                                         Atomic32 new_value) {
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+                              __ATOMIC_RELAXED, __ATOMIC_RELAXED);
+  return old_value;
+}
+
+inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr,
+                                         Atomic32 new_value) {
+  return __atomic_exchange_n(ptr, new_value, __ATOMIC_RELAXED);
+}
+
+inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr,
+                                          Atomic32 increment) {
+  return __atomic_add_fetch(ptr, increment, __ATOMIC_RELAXED);
+}
+
+inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
+                                        Atomic32 increment) {
+  return __atomic_add_fetch(ptr, increment, __ATOMIC_SEQ_CST);
+}
+
+inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
+                                       Atomic32 old_value,
+                                       Atomic32 new_value) {
+  __atomic_compare_exchange(ptr, &old_value, &new_value, true,
+                            __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+  return old_value;
+}
+
+inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
+                                       Atomic32 old_value,
+                                       Atomic32 new_value) {
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+                              __ATOMIC_RELEASE, __ATOMIC_ACQUIRE);
+  return old_value;
+}
+
+inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
+  __atomic_store_n(ptr, value, __ATOMIC_RELAXED);
+}
+
+inline void MemoryBarrier() {
+  __sync_synchronize();
+}
+
+inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
+  __atomic_store_n(ptr, value, __ATOMIC_ACQUIRE);
+}
+
+inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
+  __atomic_store_n(ptr, value, __ATOMIC_RELEASE);
+}
+
+inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
+  return __atomic_load_n(ptr, __ATOMIC_RELAXED);
+}
+
+inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
+  return __atomic_load_n(ptr, __ATOMIC_ACQUIRE);
+}
+
+inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
+  return __atomic_load_n(ptr, __ATOMIC_RELEASE);
+}
+
+#ifdef __LP64__
+
+inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
+  __atomic_store_n(ptr, value, __ATOMIC_RELEASE);
+}
+
+inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
+  return __atomic_load_n(ptr, __ATOMIC_ACQUIRE);
+}
+
+inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
+                                       Atomic64 old_value,
+                                       Atomic64 new_value) {
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+                              __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+  return old_value;
+}
+
+inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr,
+                                         Atomic64 old_value,
+                                         Atomic64 new_value) {
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+                              __ATOMIC_RELAXED, __ATOMIC_RELAXED);
+  return old_value;
+}
+
+#endif // defined(__LP64__)
+
+}  // namespace internal
+}  // namespace protobuf
+}  // namespace google
+
+#endif  // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_GENERIC_GCC_H_
diff --git a/src/google/protobuf/stubs/common.h b/src/google/protobuf/stubs/common.h
index 0c79fae3..800b7004 100644
--- a/src/google/protobuf/stubs/common.h
+++ b/src/google/protobuf/stubs/common.h
@@ -113,24 +113,24 @@ namespace internal {
 
 // The current version, represented as a single integer to make comparison
 // easier:  major * 10^6 + minor * 10^3 + micro
-#define GOOGLE_PROTOBUF_VERSION 2005001
+#define GOOGLE_PROTOBUF_VERSION 2006000
 
 // The minimum library version which works with the current version of the
 // headers.
-#define GOOGLE_PROTOBUF_MIN_LIBRARY_VERSION 2005001
+#define GOOGLE_PROTOBUF_MIN_LIBRARY_VERSION 2006000
 
 // The minimum header version which works with the current version of
 // the library.  This constant should only be used by protoc's C++ code
 // generator.
-static const int kMinHeaderVersionForLibrary = 2005001;
+static const int kMinHeaderVersionForLibrary = 2006000;
 
 // The minimum protoc version which works with the current version of the
 // headers.
-#define GOOGLE_PROTOBUF_MIN_PROTOC_VERSION 2005001
+#define GOOGLE_PROTOBUF_MIN_PROTOC_VERSION 2006000
 
 // The minimum header version which works with the current version of
 // protoc.  This constant should only be used in VerifyVersion().
-static const int kMinHeaderVersionForProtoc = 2005001;
+static const int kMinHeaderVersionForProtoc = 2006000;
 
 // Verifies that the headers and libraries are compatible.  Use the macro
 // below to call this.
diff --git a/src/google/protobuf/stubs/platform_macros.h b/src/google/protobuf/stubs/platform_macros.h
index 30604782..1705b416 100644
--- a/src/google/protobuf/stubs/platform_macros.h
+++ b/src/google/protobuf/stubs/platform_macros.h
@@ -65,6 +65,14 @@
 #elif defined(__ppc__)
 #define GOOGLE_PROTOBUF_ARCH_PPC 1
 #define GOOGLE_PROTOBUF_ARCH_32_BIT 1
+#elif defined(__GNUC__) && \
+ (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4))
+// We fallback to the generic GCC >= 4.7 implementation in atomicops.h
+# if __LP64__
+#  define GOOGLE_PROTOBUF_ARCH_64_BIT 1
+# else
+#  define GOOGLE_PROTOBUF_ARCH_32_BIT 1
+# endif
 #else
 #error Host architecture was not detected as supported by protobuf
 #endif