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55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
/*
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Compability header for stdatomic.h that works for all compilers supported
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by V. For TCC the atomic features missing are implemented using mutex locks
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*/
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#ifndef __cplusplus
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// If C just use stdatomic.h
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#ifndef __TINYC__
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#include <stdatomic.h>
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#endif
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#else
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// CPP wrapper for atomic operations that are compatible with C
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#include "atomic_cpp.h"
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#endif
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#ifdef __TINYC__
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#include <pthread.h>
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typedef intptr_t atomic_llong;
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typedef intptr_t atomic_ullong;
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pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
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/*
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Wrapper for TCC to use mutex locks since it lacks the atomic functions
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*/
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static inline intptr_t atomic_fetch_add_explicit(intptr_t *x, size_t offset, int mo)
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{
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pthread_mutex_lock(&lock);
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intptr_t old_value = *x;
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*x = *x + offset;
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pthread_mutex_unlock(&lock);
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return old_value;
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}
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/*
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Wrapper for TCC to use mutex locks since it lacks the atomic functions
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*/
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static inline intptr_t atomic_fetch_sub_explicit(intptr_t *x, size_t offset, int mo)
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{
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pthread_mutex_lock(&lock);
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intptr_t old_value = *x;
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*x = *x - offset;
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pthread_mutex_unlock(&lock);
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return old_value;
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}
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#endif
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