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Diffstat (limited to 'src/os/unix/ngx_gcc_atomic_amd64.h')
-rw-r--r--src/os/unix/ngx_gcc_atomic_amd64.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/os/unix/ngx_gcc_atomic_amd64.h b/src/os/unix/ngx_gcc_atomic_amd64.h
index 2183e738e..289cd614e 100644
--- a/src/os/unix/ngx_gcc_atomic_amd64.h
+++ b/src/os/unix/ngx_gcc_atomic_amd64.h
@@ -74,4 +74,6 @@ ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add)
}
-#define ngx_memory_barrier() __asm__ volatile ("" ::: "memory")
+#define ngx_memory_barrier() __asm__ volatile ("" ::: "memory")
+
+#define ngx_cpu_pause() __asm__ ("pause")