mirror of
https://github.com/jart/cosmopolitan.git
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9208c83f7a
- add vdso dump utility - tests now log stack usage - rename g_ftrace to __ftrace - make internal spinlocks go faster - add conformant c11 atomics library - function tracing now logs stack usage - make function call tracing thread safe - add -X unsecure (no ssl) mode to redbean - munmap() has more consistent behavior now - pacify fsync() calls on python unit tests - make --strace flag work better in redbean - start minimizing and documenting compiler flags
69 lines
2.8 KiB
C
69 lines
2.8 KiB
C
#ifndef COSMOPOLITAN_LIBC_BITS_ATOMIC_H_
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#define COSMOPOLITAN_LIBC_BITS_ATOMIC_H_
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#include "libc/atomic.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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/**
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* @fileoverview Cosmopolitan C11 Atomics Library
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*
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* - Forty-two different ways to say MOV.
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* - Fourteen different ways to say XCHG.
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* - Twenty different ways to say LOCK CMPXCHG.
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*
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* It's a lower level programming language than assembly!
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*
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* @see libc/atomic.h
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*/
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#define memory_order int
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#define memory_order_relaxed 0
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#define memory_order_consume 1
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#define memory_order_acquire 2
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#define memory_order_release 3
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#define memory_order_acq_rel 4
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#define memory_order_seq_cst 5
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#define ATOMIC_VAR_INIT(value) (value)
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#define atomic_is_lock_free(obj) ((void)(obj), sizeof(obj) <= sizeof(void *))
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#define atomic_flag atomic_bool
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#define ATOMIC_FLAG_INIT ATOMIC_VAR_INIT(0)
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#define atomic_flag_test_and_set_explicit(x, order) \
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atomic_exchange_explicit(x, 1, order)
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#define atomic_flag_clear_explicit(x, order) atomic_store_explicit(x, 0, order)
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#define atomic_compare_exchange_strong(pObject, pExpected, desired) \
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atomic_compare_exchange_strong_explicit( \
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pObject, pExpected, desired, memory_order_seq_cst, memory_order_seq_cst)
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#define atomic_compare_exchange_weak(pObject, pExpected, desired) \
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atomic_compare_exchange_weak_explicit( \
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pObject, pExpected, desired, memory_order_seq_cst, memory_order_seq_cst)
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#define atomic_exchange(pObject, desired) \
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atomic_exchange_explicit(pObject, desired, memory_order_seq_cst)
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#define atomic_fetch_add(pObject, operand) \
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atomic_fetch_add_explicit(pObject, operand, memory_order_seq_cst)
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#define atomic_fetch_and(pObject, operand) \
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atomic_fetch_and_explicit(pObject, operand, memory_order_seq_cst)
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#define atomic_fetch_or(pObject, operand) \
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atomic_fetch_or_explicit(pObject, operand, memory_order_seq_cst)
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#define atomic_fetch_sub(pObject, operand) \
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atomic_fetch_sub_explicit(pObject, operand, memory_order_seq_cst)
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#define atomic_fetch_xor(pObject, operand) \
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atomic_fetch_xor_explicit(pObject, operand, memory_order_seq_cst)
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#define atomic_load(pObject) atomic_load_explicit(pObject, memory_order_seq_cst)
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#define atomic_store(pObject, desired) \
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atomic_store_explicit(pObject, desired, memory_order_seq_cst)
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#define atomic_flag_test_and_set(x) \
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atomic_flag_test_and_set_explicit(x, memory_order_seq_cst)
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#define atomic_flag_clear(x) atomic_flag_clear_explicit(x, memory_order_seq_cst)
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#if defined(__CLANG_ATOMIC_BOOL_LOCK_FREE)
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#include "libc/bits/atomic-clang.h"
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#elif (__GNUC__ + 0) * 100 + (__GNUC_MINOR__ + 0) >= 407
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#include "libc/bits/atomic-gcc47.h"
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#else
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#include "libc/bits/atomic-gcc.h"
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#endif
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_BITS_ATOMIC_H_ */
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