dark0707
/
px4-firmware
forked from Archive/PX4-Autopilot
1
0
Fork 0
Code Pull Requests Activity

px4_atomic: use volatile hack for Snappy 

It looks like the atomic builtins are not available using QuRT and the
Hexagon toolchain, so our best bet is to use `volatile` for the atomics.
This commit is contained in:
Julian Oes 2019-05-06 15:26:11 +02:00 committed by Daniel Agar
parent e6621bf7fb
commit 0a978f51e6
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/platforms/px4_atomic.h
View File

@ -80,7 +80,11 @@ public:
*/ */
inline T load() const inline T load() const
{ {
#ifdef __PX4_QURT
return _value;
#else
return __atomic_load_n(&_value, __ATOMIC_SEQ_CST); return __atomic_load_n(&_value, __ATOMIC_SEQ_CST);
#endif
} }
/** /**
@ -88,7 +92,11 @@ public:
*/ */
inline void store(T value) inline void store(T value)
{ {
#ifdef __PX4_QURT
_value = value;
#else
__atomic_store(&_value, &value, __ATOMIC_SEQ_CST); __atomic_store(&_value, &value, __ATOMIC_SEQ_CST);
#endif
} }
/** /**
@ -159,7 +167,13 @@ public:
} }
private: private:
#ifdef __PX4_QURT
// It seems that __atomic_store and __atomic_load are not supported on Qurt,
// so the best that we can do is to use volatile.
volatile T _value;
#else
T _value; T _value;
#endif
}; };
using atomic_int = atomic<int>; using atomic_int = atomic<int>;