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--- base/allocator/partition_allocator/spinning_mutex.h.orig 2021-04-14 18:40:48 UTC
+++ base/allocator/partition_allocator/spinning_mutex.h
@@ -22,7 +22,11 @@
#define PA_HAS_LINUX_KERNEL
#endif
-#if defined(PA_HAS_LINUX_KERNEL) || defined(OS_WIN)
+#if defined(OS_FREEBSD)
+#define PA_HAS_FREEBSD_KERNEL
+#endif
+
+#if defined(PA_HAS_LINUX_KERNEL) || defined(PA_HAS_FREEBSD_KERNEL) || defined(OS_WIN)
#define PA_HAS_SPINNING_MUTEX
#endif
@@ -66,7 +70,7 @@ class LOCKABLE BASE_EXPORT SpinningMutex {
// as the slow path has better characteristics than SpinLocks's.
static constexpr int kSpinCount = 1000;
-#if defined(PA_HAS_LINUX_KERNEL)
+#if defined(PA_HAS_LINUX_KERNEL) || defined(PA_HAS_FREEBSD_KERNEL)
void FutexWait();
void FutexWake();
@@ -111,7 +115,7 @@ ALWAYS_INLINE void SpinningMutex::Acquire() {
inline constexpr SpinningMutex::SpinningMutex() = default;
-#if defined(PA_HAS_LINUX_KERNEL)
+#if defined(PA_HAS_LINUX_KERNEL) || defined(PA_HAS_FREEBSD_KERNEL)
ALWAYS_INLINE bool SpinningMutex::Try() {
int expected = kUnlocked;
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