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Linux: use futex_waitv syscall for atomic waiting

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In order to make this possible, some unnecessary features were removed.
This commit is contained in:
Ivan Chikish 2023-07-31 23:57:26 +03:00 • committed by Ivan
parent 831a9fe012
commit d34287b2cc
51 changed files with 441 additions and 574 deletions
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26
Utilities/sync.h
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@ -38,7 +38,29 @@ constexpr NTSTATUS NTSTATUS_ALERTED = 0x101;
constexpr NTSTATUS NTSTATUS_TIMEOUT = 0x102;
#endif
#ifndef __linux__
#ifdef __linux__
#ifndef SYS_futex_waitv
#if defined(ARCH_X64) || defined(ARCH_ARM64)
#define SYS_futex_waitv 449
#endif
#endif
#ifndef FUTEX_32
#define FUTEX_32 2
#endif
#ifndef FUTEX_WAITV_MAX
#define FUTEX_WAITV_MAX 128
#endif
struct futex_waitv
{
__u64 val;
__u64 uaddr;
__u32 flags;
__u32 __reserved;
};
#else
enum
{
FUTEX_PRIVATE_FLAG = 0,
@ -113,7 +135,7 @@ inline int futex(volatile void* uaddr, int futex_op, uint val, const timespec* t
}
else
{
// TODO
// TODO: absolute timeout
}
map.erase(std::find(map.find(uaddr), map.end(), ref));