From 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 Mon Sep 17 00:00:00 2001 From: Craig Jennings Date: Sun, 7 Apr 2024 13:41:34 -0500 Subject: new repository --- devdocs/c/atomic%2Fatomic_store.html | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 devdocs/c/atomic%2Fatomic_store.html (limited to 'devdocs/c/atomic%2Fatomic_store.html') diff --git a/devdocs/c/atomic%2Fatomic_store.html b/devdocs/c/atomic%2Fatomic_store.html new file mode 100644 index 00000000..c213430e --- /dev/null +++ b/devdocs/c/atomic%2Fatomic_store.html @@ -0,0 +1,24 @@ +

atomic_store, atomic_store_explicit

Defined in header <stdatomic.h> 
void atomic_store( volatile A* obj , C desired );
+		 (1) (since C11) 
void atomic_store_explicit( volatile A* obj, C desired, memory_order order );
+		 (2) (since C11)

Atomically replaces the value of the atomic variable pointed to by obj with desired. The operation is atomic write operation.

+

The first version orders memory accesses according to memory_order_seq_cst, the second version orders memory accesses according to order. order must be one of memory_order_relaxed, memory_order_release or memory_order_seq_cst. Otherwise the behavior is undefined.

+

This is a generic function defined for all atomic object types A. The argument is pointer to a volatile atomic type to accept addresses of both non-volatile and volatile (e.g. memory-mapped I/O) atomic objects, and volatile semantic is preserved when applying this operation to volatile atomic objects. C is the non-atomic type corresponding to A.

+

It is unspecified whether the name of a generic function is a macro or an identifier declared with external linkage. If a macro definition is suppressed in order to access an actual function (e.g. parenthesized like (atomic_store)(...)), or a program defines an external identifier with the name of a generic function, the behavior is undefined.

+

Parameters

+ + +
obj - pointer to the atomic object to modify
order - the memory synchronization ordering for this operation

Return value

(none)

+

References

See also

+ +
+
(C11)
 reads a value from an atomic object
(function)
C++ documentation for atomic_store, atomic_store_explicit
+

+ © cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
+ https://en.cppreference.com/w/c/atomic/atomic_store +

+
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