mirror of
https://github.com/OpenMP/Examples.git
synced 2025-04-04 05:41:33 +01:00
28 lines
546 B
C
28 lines
546 B
C
/*
|
|
* @@name: atomic.2c
|
|
* @@type: C
|
|
* @@compilable: yes
|
|
* @@linkable: no
|
|
* @@expect: success
|
|
*/
|
|
int atomic_read(const int *p)
|
|
{
|
|
int value;
|
|
/* Guarantee that the entire value of *p is read atomically. No part of
|
|
* *p can change during the read operation.
|
|
*/
|
|
#pragma omp atomic read
|
|
value = *p;
|
|
return value;
|
|
}
|
|
|
|
void atomic_write(int *p, int value)
|
|
{
|
|
/* Guarantee that value is stored atomically into *p. No part of *p can
|
|
change
|
|
* until after the entire write operation is completed.
|
|
*/
|
|
#pragma omp atomic write
|
|
*p = value;
|
|
}
|