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-rw-r--r--debian/patches/fix-atomics-some-more.patch190
1 files changed, 190 insertions, 0 deletions
diff --git a/debian/patches/fix-atomics-some-more.patch b/debian/patches/fix-atomics-some-more.patch
new file mode 100644
index 0000000..786a9c3
--- /dev/null
+++ b/debian/patches/fix-atomics-some-more.patch
@@ -0,0 +1,190 @@
+# upstream trunk r1907541, r1907637, r1907642, r1907677, r1907678
+--- apr.orig/atomic/unix/mutex64.c
++++ apr/atomic/unix/mutex64.c
+@@ -96,7 +96,14 @@ apr_status_t apr__atomic_generic64_init(
+
+ APR_DECLARE(apr_uint64_t) apr_atomic_read64(volatile apr_uint64_t *mem)
+ {
+- return *mem;
++ apr_uint64_t cur_value;
++ DECLARE_MUTEX_LOCKED(mutex, mem);
++
++ cur_value = *mem;
++
++ MUTEX_UNLOCK(mutex);
++
++ return cur_value;
+ }
+
+ APR_DECLARE(void) apr_atomic_set64(volatile apr_uint64_t *mem, apr_uint64_t val)
+--- apr.orig/atomic/unix/builtins.c
++++ apr/atomic/unix/builtins.c
+@@ -18,10 +18,11 @@
+
+ #ifdef USE_ATOMICS_BUILTINS
+
+-#if defined(__arm__) || defined(__powerpc__) || defined(__powerpc64__)
+-#define WEAK_MEMORY_ORDERING 1
+-#else
++#if defined(__i386__) || defined(__x86_64__) \
++ || defined(__s390__) || defined(__s390x__)
+ #define WEAK_MEMORY_ORDERING 0
++#else
++#define WEAK_MEMORY_ORDERING 1
+ #endif
+
+ APR_DECLARE(apr_status_t) apr_atomic_init(apr_pool_t *p)
+--- apr.orig/atomic/unix/builtins64.c
++++ apr/atomic/unix/builtins64.c
+@@ -18,17 +18,18 @@
+
+ #ifdef USE_ATOMICS_BUILTINS64
+
+-#if defined(__arm__) || defined(__powerpc__) || defined(__powerpc64__)
+-#define WEAK_MEMORY_ORDERING 1
+-#else
++#if defined(__i386__) || defined(__x86_64__) \
++ || defined(__s390__) || defined(__s390x__)
+ #define WEAK_MEMORY_ORDERING 0
++#else
++#define WEAK_MEMORY_ORDERING 1
+ #endif
+
+ APR_DECLARE(apr_uint64_t) apr_atomic_read64(volatile apr_uint64_t *mem)
+ {
+ #if HAVE__ATOMIC_BUILTINS64
+ return __atomic_load_n(mem, __ATOMIC_SEQ_CST);
+-#elif WEAK_MEMORY_ORDERING
++#elif WEAK_MEMORY_ORDERING || APR_SIZEOF_VOIDP < 8
+ /* No __sync_load() available => apr_atomic_add64(mem, 0) */
+ return __sync_fetch_and_add(mem, 0);
+ #else
+@@ -40,7 +41,7 @@ APR_DECLARE(void) apr_atomic_set64(volat
+ {
+ #if HAVE__ATOMIC_BUILTINS64
+ __atomic_store_n(mem, val, __ATOMIC_SEQ_CST);
+-#elif WEAK_MEMORY_ORDERING
++#elif WEAK_MEMORY_ORDERING || APR_SIZEOF_VOIDP < 8
+ /* No __sync_store() available => apr_atomic_xchg64(mem, val) */
+ __sync_synchronize();
+ __sync_lock_test_and_set(mem, val);
+--- apr.orig/configure.in
++++ apr/configure.in
+@@ -552,31 +552,35 @@ AC_CACHE_CHECK([whether the compiler pro
+ [AC_TRY_RUN([
+ #if HAVE_STDINT_H
+ #include <stdint.h>
++typedef uint64_t u64_t;
++#else
++typedef unsigned long long u64_t;
+ #endif
+ int main(int argc, const char *const *argv)
+ {
+-#if HAVE_STDINT_H
+- uint64_t val = 1010, tmp, *mem = &val;
+-#else
+- unsigned long long val = 1010, tmp, *mem = &val;
+-#endif
++ struct {
++ char pad0;
++ u64_t val;
++ } s;
++ u64_t *mem = &s.val, tmp;
+
+- if (__sync_fetch_and_add(&val, 1010) != 1010 || val != 2020)
++ s.val = 1010;
++ if (__sync_fetch_and_add(&s.val, 1010) != 1010 || s.val != 2020)
+ return 1;
+
+- tmp = val;
+- if (__sync_fetch_and_sub(mem, 1010) != tmp || val != 1010)
++ tmp = s.val;
++ if (__sync_fetch_and_sub(mem, 1010) != tmp || s.val != 1010)
+ return 1;
+
+- if (__sync_sub_and_fetch(&val, 1010) != 0 || val != 0)
++ if (__sync_sub_and_fetch(&s.val, 1010) != 0 || s.val != 0)
+ return 1;
+
+ tmp = 3030;
+- if (__sync_val_compare_and_swap(mem, 0, tmp) != 0 || val != tmp)
++ if (__sync_val_compare_and_swap(mem, 0, tmp) != 0 || s.val != tmp)
+ return 1;
+
+ __sync_synchronize();
+- if (__sync_lock_test_and_set(&val, 4040) != 3030)
++ if (__sync_lock_test_and_set(&s.val, 4040) != 3030)
+ return 1;
+
+ return 0;
+@@ -586,31 +590,45 @@ AC_CACHE_CHECK([whether the compiler pro
+ [AC_TRY_RUN([
+ #if HAVE_STDINT_H
+ #include <stdint.h>
++typedef uint64_t u64_t;
++#else
++typedef unsigned long long u64_t;
+ #endif
++static int test_always_lock_free(volatile u64_t *val)
++{
++ return __atomic_always_lock_free(sizeof(*val), val);
++}
+ int main(int argc, const char *const *argv)
+ {
+-#if HAVE_STDINT_H
+- uint64_t val = 1010, tmp, *mem = &val;
+-#else
+- unsigned long long val = 1010, tmp, *mem = &val;
+-#endif
++ struct {
++ char pad0;
++ u64_t val;
++ char pad1;
++ u64_t tmp;
++ } s;
++ u64_t *mem = &s.val;
++
++ /* check if alignment matters (no fallback to libatomic) */
++ if (!test_always_lock_free(&s.val))
++ return 1;
+
+- if (__atomic_fetch_add(&val, 1010, __ATOMIC_SEQ_CST) != 1010 || val != 2020)
++ s.val = 1010;
++ if (__atomic_fetch_add(&s.val, 1010, __ATOMIC_SEQ_CST) != 1010 || s.val != 2020)
+ return 1;
+
+- tmp = val;
+- if (__atomic_fetch_sub(mem, 1010, __ATOMIC_SEQ_CST) != tmp || val != 1010)
++ s.tmp = s.val;
++ if (__atomic_fetch_sub(mem, 1010, __ATOMIC_SEQ_CST) != s.tmp || s.val != 1010)
+ return 1;
+
+- if (__atomic_sub_fetch(&val, 1010, __ATOMIC_SEQ_CST) != 0 || val != 0)
++ if (__atomic_sub_fetch(&s.val, 1010, __ATOMIC_SEQ_CST) != 0 || s.val != 0)
+ return 1;
+
+- tmp = val;
+- if (!__atomic_compare_exchange_n(mem, &tmp, 3030, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)
+- || tmp != 0)
++ s.tmp = s.val;
++ if (!__atomic_compare_exchange_n(mem, &s.tmp, 3030, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)
++ || s.tmp != 0)
+ return 1;
+
+- if (__atomic_exchange_n(&val, 4040, __ATOMIC_SEQ_CST) != 3030)
++ if (__atomic_exchange_n(&s.val, 4040, __ATOMIC_SEQ_CST) != 3030)
+ return 1;
+
+ return 0;
+--- apr.orig/test/testatomic.c
++++ apr/test/testatomic.c
+@@ -662,6 +662,9 @@ static void test_atomics_threaded64(abts
+ pthread_setconcurrency(8);
+ #endif
+
++ mutex_locks64 = 0;
++ apr_atomic_set64(&atomic_ops64, 0);
++
+ rv = apr_thread_mutex_create(&thread_lock64, APR_THREAD_MUTEX_DEFAULT, p);
+ APR_ASSERT_SUCCESS(tc, "Could not create lock", rv);
+
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