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charmOS docs

semaphore

include/sync/semaphore.h View source View on GitHub

Structs

Section titled “Structs”

semaphore

Section titled “semaphore”
struct semaphore (4 fields) source
§ int32_t count
§ bool irq_disable
§ struct spinlock lock
§ struct condvar cv

Functions

Section titled “Functions”

semaphore_init

Section titled “semaphore_init”
void semaphore_init(struct semaphore *s, int value, bool irq_disable)
source

semaphore_post

Section titled “semaphore_post”
void semaphore_post(struct semaphore *s)
source

semaphore_postn

Section titled “semaphore_postn”
void semaphore_postn(struct semaphore *s, int n)
source

Macros

Section titled “Macros”

SEMAPHORE_INIT_IRQ_DISABLE

Section titled “SEMAPHORE_INIT_IRQ_DISABLE”
#define SEMAPHORE_INIT_IRQ_DISABLE true
source

These are for the underlying spinlock

SEMAPHORE_INIT_NORMAL

Section titled “SEMAPHORE_INIT_NORMAL”
#define SEMAPHORE_INIT_NORMAL false
source