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78 lines
4.1 KiB
C
78 lines
4.1 KiB
C
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// file: header/threading/atomic.h
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// Atomics
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#ifdef ZPL_EDITOR
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#include <zpl.h>
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#endif
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// TODO: Be specific with memory order?
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// e.g. relaxed, acquire, release, acquire_release
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#if !defined(__cplusplus) && !defined(ZPL_COMPILER_MSVC)
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# include <stdatomic.h>
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# define zpl_atomic(X) volatile _Atomic(X)
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#else
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// TODO: Fix once C++ guys bother to add C atomics to std.
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//# include <atomic>
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# define zpl_atomic(X) volatile X /*std::atomic<X>*/
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#endif
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#define zpl_atomicarg(X) volatile X
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ZPL_BEGIN_C_DECLS
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#if defined(ZPL_COMPILER_MSVC)
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typedef struct zpl_atomic32 { zpl_atomic(zpl_i32) value; } zpl_atomic32;
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typedef struct zpl_atomic64 { zpl_atomic(zpl_i64) value; } zpl_atomic64;
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typedef struct zpl_atomic_ptr { zpl_atomic(void*) value; } zpl_atomic_ptr;
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#else
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#if defined(ZPL_ARCH_32_BIT)
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#define ZPL_ATOMIC_PTR_ALIGNMENT 4
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#elif defined(ZPL_ARCH_64_BIT)
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#define ZPL_ATOMIC_PTR_ALIGNMENT 8
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#else
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#error Unknown architecture
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#endif
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typedef struct zpl_atomic32 { zpl_atomic(zpl_i32) value; } __attribute__ ((aligned(4))) zpl_atomic32;
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typedef struct zpl_atomic64 { zpl_atomic(zpl_i64) value; } __attribute__ ((aligned(8))) zpl_atomic64;
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typedef struct zpl_atomic_ptr { zpl_atomic(void*) value; } __attribute__ ((aligned(ZPL_ATOMIC_PTR_ALIGNMENT))) zpl_atomic_ptr;
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#endif
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ZPL_DEF zpl_i32 zpl_atomic32_load (zpl_atomic32 const *a);
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ZPL_DEF void zpl_atomic32_store (zpl_atomic32 *a, zpl_atomicarg(zpl_i32) value);
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ZPL_DEF zpl_i32 zpl_atomic32_compare_exchange(zpl_atomic32 *a, zpl_atomicarg(zpl_i32) expected, zpl_atomicarg(zpl_i32) desired);
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ZPL_DEF zpl_i32 zpl_atomic32_exchange (zpl_atomic32 *a, zpl_atomicarg(zpl_i32) desired);
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ZPL_DEF zpl_i32 zpl_atomic32_fetch_add (zpl_atomic32 *a, zpl_atomicarg(zpl_i32) operand);
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ZPL_DEF zpl_i32 zpl_atomic32_fetch_and (zpl_atomic32 *a, zpl_atomicarg(zpl_i32) operand);
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ZPL_DEF zpl_i32 zpl_atomic32_fetch_or (zpl_atomic32 *a, zpl_atomicarg(zpl_i32) operand);
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ZPL_DEF zpl_b32 zpl_atomic32_spin_lock (zpl_atomic32 *a, zpl_isize time_out); // NOTE: time_out = -1 as default
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ZPL_DEF void zpl_atomic32_spin_unlock (zpl_atomic32 *a);
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ZPL_DEF zpl_b32 zpl_atomic32_try_acquire_lock(zpl_atomic32 *a);
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ZPL_DEF zpl_i64 zpl_atomic64_load (zpl_atomic64 const *a);
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ZPL_DEF void zpl_atomic64_store (zpl_atomic64 *a, zpl_atomicarg(zpl_i64) value);
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ZPL_DEF zpl_i64 zpl_atomic64_compare_exchange(zpl_atomic64 *a, zpl_atomicarg(zpl_i64) expected, zpl_atomicarg(zpl_i64) desired);
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ZPL_DEF zpl_i64 zpl_atomic64_exchange (zpl_atomic64 *a, zpl_atomicarg(zpl_i64) desired);
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ZPL_DEF zpl_i64 zpl_atomic64_fetch_add (zpl_atomic64 *a, zpl_atomicarg(zpl_i64) operand);
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ZPL_DEF zpl_i64 zpl_atomic64_fetch_and (zpl_atomic64 *a, zpl_atomicarg(zpl_i64) operand);
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ZPL_DEF zpl_i64 zpl_atomic64_fetch_or (zpl_atomic64 *a, zpl_atomicarg(zpl_i64) operand);
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ZPL_DEF zpl_b32 zpl_atomic64_spin_lock (zpl_atomic64 *a, zpl_isize time_out); // NOTE: time_out = -1 as default
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ZPL_DEF void zpl_atomic64_spin_unlock (zpl_atomic64 *a);
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ZPL_DEF zpl_b32 zpl_atomic64_try_acquire_lock(zpl_atomic64 *a);
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ZPL_DEF void *zpl_atomic_ptr_load (zpl_atomic_ptr const *a);
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ZPL_DEF void zpl_atomic_ptr_store (zpl_atomic_ptr *a, zpl_atomicarg(void *)value);
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ZPL_DEF void *zpl_atomic_ptr_compare_exchange(zpl_atomic_ptr *a, zpl_atomicarg(void *)expected, zpl_atomicarg(void *)desired);
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ZPL_DEF void *zpl_atomic_ptr_exchange (zpl_atomic_ptr *a, zpl_atomicarg(void *)desired);
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ZPL_DEF void *zpl_atomic_ptr_fetch_add (zpl_atomic_ptr *a, zpl_atomicarg(void *)operand);
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ZPL_DEF void *zpl_atomic_ptr_fetch_and (zpl_atomic_ptr *a, zpl_atomicarg(void *)operand);
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ZPL_DEF void *zpl_atomic_ptr_fetch_or (zpl_atomic_ptr *a, zpl_atomicarg(void *)operand);
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ZPL_DEF zpl_b32 zpl_atomic_ptr_spin_lock (zpl_atomic_ptr *a, zpl_isize time_out); // NOTE: time_out = -1 as default
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ZPL_DEF void zpl_atomic_ptr_spin_unlock (zpl_atomic_ptr *a);
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ZPL_DEF zpl_b32 zpl_atomic_ptr_try_acquire_lock(zpl_atomic_ptr *a);
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ZPL_END_C_DECLS
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