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sys/atomic_utils: Add load/store for kernel PIDs

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This will make it easier to change the width of kernel_pid_t if needed
without breaking code.
This commit is contained in:
Marian Buschsieweke 2022-01-04 22:00:50 +01:00
parent 3c5c351ef5
commit 20793fd6c6
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GPG Key ID: CB8E3238CE715A94
1 changed files with 23 additions and 0 deletions
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23
sys/include/atomic_utils.h
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@ -139,6 +139,8 @@
#include <stdint.h> #include <stdint.h>
#include "irq.h" #include "irq.h"
#include "sched.h"
#include "atomic_utils_arch.h" #include "atomic_utils_arch.h"
#ifdef __cplusplus #ifdef __cplusplus
@ -263,6 +265,16 @@ static inline uintptr_t atomic_load_uintptr(const volatile uintptr_t *var) {
static inline void * atomic_load_ptr(void **ptr_addr) { static inline void * atomic_load_ptr(void **ptr_addr) {
return (void *)atomic_load_uintptr((const volatile uintptr_t *)ptr_addr); return (void *)atomic_load_uintptr((const volatile uintptr_t *)ptr_addr);
} }
/**
* @brief Load an `kernel_pid_t` atomically
*
* @param[in] var Variable to load atomically
* @return The value stored in @p var
*/
static inline kernel_pid_t atomic_load_kernel_pid(const volatile kernel_pid_t *var)
{
return atomic_load_u16((const volatile uint16_t *)var);
}
/** @} */ /** @} */
/** /**
@ -321,6 +333,17 @@ static inline void atomic_store_uintptr(volatile uintptr_t *dest, uintptr_t val)
static inline void atomic_store_ptr(void **dest, const void *val) { static inline void atomic_store_ptr(void **dest, const void *val) {
atomic_store_uintptr((volatile uintptr_t *)dest, (uintptr_t)val); atomic_store_uintptr((volatile uintptr_t *)dest, (uintptr_t)val);
} }
/**
* @brief Store an `kernel_pid_t` atomically
*
* @param[out] dest Location to atomically write the new value to
* @param[in] val Value to write
*/
static inline void atomic_store_kernel_pid(volatile kernel_pid_t *dest,
kernel_pid_t val)
{
atomic_store_u16((volatile uint16_t *)dest, (uint16_t)val);
}
/** @} */ /** @} */
/** /**