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Added $$atomic_store and $$atomic_load.

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This commit is contained in:
Christoffer Lerno
2023-02-17 13:22:12 +01:00
parent a0a5c940f1
commit baa2e474b5
12 changed files with 190 additions and 18 deletions
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32
lib/std/core/mem.c3
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@@ -18,12 +18,42 @@ enum AtomicOrdering : int
NOT_ATOMIC, // Not atomic
UNORDERED, // No lock
MONOTONIC, // Consistent ordering
AQUIRE, // Barrier locking load/store
ACQUIRE, // Barrier locking load/store
RELEASE, // Barrier releasing load/store
ACQUIRE_RELEASE, // Barrier fence to load/store
SEQ_CONSISTENT, // Acquire semantics, ordered with other seq_consistent
}
/**
* @param [in] x "the variable or dereferenced pointer to load."
* @param $ordering "atomic ordering of the load, defaults to SEQ_CONSISTENT"
* @param $volatile "whether the load should be volatile, defaults to 'false'"
* @return "returns the value of x"
*
* @require $ordering != AtomicOrdering.RELEASE "Release ordering is not valid for load."
* @require $ordering != AtomicOrdering.ACQUIRE_RELEASE "Acquire release is not valid for load."
* @require types::may_load_atomic($typeof(x)) "Only integer, float and pointers may be used."
**/
macro @atomic_load(&x, AtomicOrdering $ordering = SEQ_CONSISTENT, $volatile = false) @builtin
{
return $$atomic_load(&x, $volatile, (int)$ordering);
}
/**
* @param [out] x "the variable or dereferenced pointer to store to."
* @param value "the value to store."
* @param $ordering "the atomic ordering of the store, defaults to SEQ_CONSISTENT"
* @param $volatile "whether the store should be volatile, defaults to 'false'"
*
* @require $ordering != AtomicOrdering.ACQUIRE "Acquire ordering is not valid for store."
* @require $ordering != AtomicOrdering.ACQUIRE_RELEASE "Acquire release is not valid for store."
* @require types::may_load_atomic($typeof(x)) "Only integer, float and pointers may be used."
**/
macro void @atomic_store(&x, value, AtomicOrdering $ordering = SEQ_CONSISTENT, $volatile = false) @builtin
{
$$atomic_store(&x, value, $volatile, (int)$ordering);
}
macro compare_exchange(ptr, compare, value, AtomicOrdering $success, AtomicOrdering $failure, bool $volatile = true, bool $weak = false, usz $alignment = 0)
{
return $$compare_exchange(ptr, compare, value, $volatile, $weak, $success.ordinal, $failure.ordinal, $alignment);