-/**
- * \brief Determine if a short spinlock is locked
- * \param Lock Lock pointer
- */
-static inline int IS_LOCKED(struct sShortSpinlock *Lock) {
- return !!Lock->Lock;
-}
-/**
- * \brief Acquire a Short Spinlock
- * \param Lock Lock pointer
- *
- * This type of mutex should only be used for very short sections of code,
- * or in places where a Mutex_* would be overkill, such as appending
- * an element to linked list (usually two assignement lines in C)
- *
- * \note This type of lock halts interrupts, so ensure that no timing
- * functions are called while it is held.
- */
-static inline void SHORTLOCK(struct sShortSpinlock *Lock) {
- int v = 1;
- int IF;
- // int val = GetCPUNum() + 1;
-
- // Save interrupt state and clear interrupts
- __ASM__ ("pushf;\n\tcli;\n\tpop %%eax" : "=a"(IF));
- IF &= 0x200;
-
- // Wait for another CPU to release
- while(v)
- __ASM__("xchgl %%ecx, (%%edi)":"=c"(v):"a"(1),"D"(&Lock->Lock));
-
- Lock->IF = IF;
-}
-/**
- * \brief Release a short lock
- * \param Lock Lock pointer
- */
-static inline void SHORTREL(struct sShortSpinlock *Lock) {
- // Lock->IF can change anytime once Lock->Lock is zeroed
- if(Lock->IF) {
- Lock->Lock = 0;
- __ASM__ ("sti");
- }
- else {
- Lock->Lock = 0;
- }
-}