15 lines
607 B
C
15 lines
607 B
C
static inline __always_inline int __futex(volatile void* ftx, int op, int value, const struct timespec* timeout) {
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// Our generated syscall assembler sets errno, but our callers (pthread functions) don't want to.
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int saved_errno = errno;
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int result = syscall(__NR_futex, ftx, op, value, timeout);
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if (__predict_false(result == -1)) {
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result = -errno;
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errno = saved_errno;
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}
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return result;
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}
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static inline int __futex_wait_ex(volatile void* ftx, bool shared, int value, const struct timespec* timeout) {
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return __futex(ftx, shared ? FUTEX_WAIT : FUTEX_WAIT_PRIVATE, value, timeout);
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}
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