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28 lines
830 B
C
28 lines
830 B
C
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#ifndef COSMOPOLITAN_LIBC_LINUX_FUTEX_H_
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#define COSMOPOLITAN_LIBC_LINUX_FUTEX_H_
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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#include "libc/calls/struct/timespec.h"
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forceinline int LinuxFutexWait(void *addr, int expect,
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struct timespec *timeout) {
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int ax;
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register void *r10 asm("r10") = timeout;
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asm volatile("syscall"
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: "=a"(ax)
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: "0"(202), "D"(addr), "S"(0), "d"(expect), "r"(r10)
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: "rcx", "r11", "memory");
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return ax;
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}
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forceinline int LinuxFutexWake(void *addr, int count) {
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int ax;
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asm volatile("syscall"
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: "=a"(ax)
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: "0"(202), "D"(addr), "S"(1), "d"(count)
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: "rcx", "r11", "memory");
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return ax;
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}
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_LINUX_FUTEX_H_ */
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