55 lines
1.5 KiB
V
55 lines
1.5 KiB
V
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module stdatomic
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// Implement the atomic operations. For now TCC does not support the atomic
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// versions on nix so it uses locks to simulate the same behavor.
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//
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// On windows tcc can simulate with other atomic operations.
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//
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// NB: this implementations should be regarded as alpha stage and be tested
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// much more.
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// add_u64 adds provided delta as an atomic operation
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pub fn add_u64(ptr &u64, delta int) bool {
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res := C.atomic_fetch_add_u64(voidptr(ptr), delta)
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return res == 0
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}
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// sub_u64 subtracts provided delta as an atomic operation
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pub fn sub_u64(ptr &u64, delta int) bool {
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res := C.atomic_fetch_sub_u64(voidptr(ptr), delta)
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return res == 0
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}
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// add_i64 adds provided delta as an atomic operation
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pub fn add_i64(ptr &i64, delta int) bool {
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res := C.atomic_fetch_add_u64(voidptr(ptr), delta)
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return res == 0
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}
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// add_i64 subtracts provided delta as an atomic operation
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pub fn sub_i64(ptr &i64, delta int) bool {
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res := C.atomic_fetch_sub_u64(voidptr(ptr), delta)
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return res == 0
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}
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// atomic store/load operations have to be used when there might be another concurrent access
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// atomicall set a value
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pub fn store_u64(ptr &u64, val u64) {
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C.atomic_store_u64(voidptr(ptr), val)
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}
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// atomicall get a value
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pub fn load_u64(ptr &u64) u64 {
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return C.atomic_load_u64(voidptr(ptr))
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}
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// atomicall set a value
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pub fn store_i64(ptr &i64, val i64) {
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C.atomic_store_u64(voidptr(ptr), val)
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}
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// atomicall get a value
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pub fn load_i64(ptr &i64) i64 {
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return i64(C.atomic_load_u64(voidptr(ptr)))
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}
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