meta-openembedded/meta-oe/recipes-dbs/rocksdb/files/0001-replace-old-sync-with-new-atomic-builtin-equivalents.patch

From 114c42fba3fc86119710e8dd1bb2b7a9e39e3064 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Thu, 17 Jun 2021 19:35:01 -0700
Subject: [PATCH] replace old sync with new atomic builtin equivalents

Helps compiling with gcc on newer arches e.g. riscv32 where these
__sync* builtins are not implemented atleast for 64bit values

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 .../range/range_tree/lib/portability/toku_atomic.h   | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/utilities/transactions/lock/range/range_tree/lib/portability/toku_atomic.h
+++ b/utilities/transactions/lock/range/range_tree/lib/portability/toku_atomic.h
@@ -77,37 +77,37 @@ template <typename T, typename U>
 __attribute__((always_inline)) static inline T toku_sync_fetch_and_add(T *addr,
                                                                        U diff) {
   paranoid_invariant(!crosses_boundary(addr, sizeof *addr));
-  return __sync_fetch_and_add(addr, diff);
+  return __atomic_fetch_add(addr, diff, 5);
 }
 template <typename T, typename U>
 __attribute__((always_inline)) static inline T toku_sync_add_and_fetch(T *addr,
                                                                        U diff) {
   paranoid_invariant(!crosses_boundary(addr, sizeof *addr));
-  return __sync_add_and_fetch(addr, diff);
+  return __atomic_add_fetch(addr, diff, 5);
 }
 template <typename T, typename U>
 __attribute__((always_inline)) static inline T toku_sync_fetch_and_sub(T *addr,
                                                                        U diff) {
   paranoid_invariant(!crosses_boundary(addr, sizeof *addr));
-  return __sync_fetch_and_sub(addr, diff);
+  return __atomic_fetch_sub(addr, diff, 5);
 }
 template <typename T, typename U>
 __attribute__((always_inline)) static inline T toku_sync_sub_and_fetch(T *addr,
                                                                        U diff) {
   paranoid_invariant(!crosses_boundary(addr, sizeof *addr));
-  return __sync_sub_and_fetch(addr, diff);
+  return __atomic_sub_fetch(addr, diff, 5);
 }
 template <typename T, typename U, typename V>
 __attribute__((always_inline)) static inline T toku_sync_val_compare_and_swap(
     T *addr, U oldval, V newval) {
   paranoid_invariant(!crosses_boundary(addr, sizeof *addr));
-  return __sync_val_compare_and_swap(addr, oldval, newval);
+  return __atomic_compare_exchange(addr, oldval, newval);
 }
 template <typename T, typename U, typename V>
 __attribute__((always_inline)) static inline bool
 toku_sync_bool_compare_and_swap(T *addr, U oldval, V newval) {
   paranoid_invariant(!crosses_boundary(addr, sizeof *addr));
-  return __sync_bool_compare_and_swap(addr, oldval, newval);
+  return static_cast<bool>(__atomic_compare_exchange(addr, oldval, newval));
 }
 
 // in case you include this but not toku_portability.h