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Harlequin RIP SDK
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Harlequin RIP SDK
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Spinlocks implemented using atomic operations. More...
Macros | |
| #define | yield_processor() (void)SwitchToThread() |
| Yield the processor to another thread, if there is one runnable. | |
| #define | spinlock_pointer(addr_, locked_, count_) |
| Lock a pointer using atomic operations. More... | |
| #define | spinlock_pointer_incomplete(addr_, locked_, count_) |
| Lock a pointer using atomic operations. More... | |
| #define | spintrylock_pointer(addr_, locked_, didlock_) |
| Try to lock a pointer using atomic operations. More... | |
| #define | spinunlock_pointer(addr_, unlocked_) |
| Unlock a pointer using atomic operations. More... | |
| #define | spinunlock_pointer_incomplete(addr_, unlocked_) |
| Unlock a pointer using atomic operations. More... | |
| #define | spin_pointer_without_lock(ptr_, uptr_) |
| Get the value of a potentially spinlocked pointer in its unlocked state. More... | |
| #define | spin_pointer_incomplete_without_lock(ptr_, uptr_) |
| Get the value of a potentially spinlocked pointer in its unlocked state. More... | |
| #define | spinlock_counter(addr_, count_) |
| Lock a counter semaphore using atomic operations. More... | |
| #define | spinunlock_counter(addr_) |
| Unlock a semaphore counter using atomic operations. More... | |
| #define | spinlock_counter_bits(addr_, bits_, count_) |
| Lock a sharded counter lock using atomic operations. More... | |
| #define | spintrylock_counter_bits(addr_, bits_, didlock_) |
| Try to lock a sharded counter using atomic operations. More... | |
| #define | spinunlock_counter_bits(addr_, bits_) |
| Unlock a sharded counter using atomic operations. More... | |
| #define | spinlock_counter_R(addr_, count_) |
| Lock a read-write counter lock for reading using atomic operations. More... | |
| #define | spintrylock_counter_R(addr_, didlock_) |
| Try to lock a read-write counter lock for reading using atomic operations. More... | |
| #define | spinunlock_counter_R(addr_) |
| Unlock a read-write counter currently locked for reading using atomic operations. More... | |
| #define | spinlock_counter_W(addr_, count_) |
| Lock a read-write counter lock for writing using atomic operations. More... | |
| #define | spintrylock_counter_W(addr_, didlock_) |
| Try to lock a read-write counter lock for writing using atomic operations. More... | |
| #define | spinunlock_counter_W(addr_) |
| Unlock a read-write counter currently locked for writing using atomic operations. More... | |
| #define | spinlock_counter_WtoR(addr_, count_) |
| Convert a read-write counter lock from writing to reading using atomic operations. More... | |
| #define | spintrylock_counter_RtoW(addr_, didlock_) |
| Try to convert a read-write counter lock from reading to writing using atomic operations. More... | |
Typedefs | |
| typedef void * | __attribute__((__may_alias__)) spinlock_void_ptr |
| Aliased void pointer, to quieten GCC warnings and prevent harmful optimisations. | |
Enumerations | |
| enum | { HQSPIN_YIELD_NEVER = 0 , HQSPIN_YIELD_ALWAYS = 1 , HQSPIN_YIELD_OFTEN = 100 , HQSPIN_YIELD_SOMETIMES = 1000 , HQSPIN_YIELD_RARELY = 10000 } |
| Constants for yields per spinlock cycle. If the spinlock is held for a short time on average, it's worth burning a little more effort trying to get it and avoiding a context switch. Spinlocks should not be used for cases where mutexes are practicable. More... | |
Spinlocks implemented using atomic operations.
Copyright (C) 2024 Global Graphics Software Ltd. All rights reserved. This source code contains the confidential and trade secret information of Global Graphics Software Ltd. It may not be used, copied or distributed for any reason except as set forth in the applicable Global Graphics license agreement.
These spinlocks are implemented in a separate file because they include platform-specific header files to yield the processor in the event of a contended spinlock