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px4_platform_common/atomic.h: fetch_add/sub were really fetch_inc/dec

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fetch_add/sub were really inc/dec for the __atomic_always_lock_free == true
branch. This fixes them so that the arg "num" is actually used.
This commit is contained in:
Ville Juven
2022-09-13 09:29:45 +03:00
committed by Daniel Agar
parent ff196a7363
commit f300ec1da2
1 changed files with 4 additions and 2 deletions
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platforms/common/include/px4_platform_common/atomic.h
+4 -2
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@@ -128,7 +128,8 @@ public:
if (!__atomic_always_lock_free(sizeof(T), 0)) { if (!__atomic_always_lock_free(sizeof(T), 0)) {
irqstate_t flags = enter_critical_section(); irqstate_t flags = enter_critical_section();
T ret = _value++; T ret = _value;
_value += num;
leave_critical_section(flags); leave_critical_section(flags);
return ret; return ret;
@@ -149,7 +150,8 @@ public:
if (!__atomic_always_lock_free(sizeof(T), 0)) { if (!__atomic_always_lock_free(sizeof(T), 0)) {
irqstate_t flags = enter_critical_section(); irqstate_t flags = enter_critical_section();
T ret = _value--; T ret = _value;
_value -= num;
leave_critical_section(flags); leave_critical_section(flags);
return ret; return ret;