46 lines
1.8 KiB
Diff
46 lines
1.8 KiB
Diff
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diff --git a/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp b/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
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--- jdk8/hotspot/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
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+++ jdk8/hotspot/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
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@@ -222,31 +222,35 @@
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inline jint Atomic::xchg(jint exchange_value, volatile jint* dest) {
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#ifdef ARM
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- return arm_lock_test_and_set(dest, exchange_value);
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+ jint result = arm_lock_test_and_set(dest, exchange_value);
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#else
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#ifdef M68K
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- return m68k_lock_test_and_set(dest, exchange_value);
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+ jint result = m68k_lock_test_and_set(dest, exchange_value);
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#else
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// __sync_lock_test_and_set is a bizarrely named atomic exchange
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// operation. Note that some platforms only support this with the
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// limitation that the only valid value to store is the immediate
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// constant 1. There is a test for this in JNI_CreateJavaVM().
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- return __sync_lock_test_and_set (dest, exchange_value);
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+ jint result = __sync_lock_test_and_set (dest, exchange_value);
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+ __sync_synchronize();
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#endif // M68K
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#endif // ARM
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+ return result;
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}
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inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value,
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volatile intptr_t* dest) {
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#ifdef ARM
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- return arm_lock_test_and_set(dest, exchange_value);
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+ intptr_t result = arm_lock_test_and_set(dest, exchange_value);
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#else
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#ifdef M68K
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- return m68k_lock_test_and_set(dest, exchange_value);
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+ intptr_t result = m68k_lock_test_and_set(dest, exchange_value);
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#else
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- return __sync_lock_test_and_set (dest, exchange_value);
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+ intptr_t result = __sync_lock_test_and_set (dest, exchange_value);
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+ __sync_synchronize();
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#endif // M68K
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#endif // ARM
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+ return result;
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}
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inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
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