mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-08 14:42:40 +00:00
b407327972
- clock_nanosleep() is now much faster on OpenBSD and NetBSD - Thread joining is now much faster on NetBSD - FreeBSD timestamps are now more accurate - Thread spawning now goes faster on XNU - Clean up the clone() code
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
#ifndef COSMOPOLITAN_LIBC_THREAD_TLS_H_
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#define COSMOPOLITAN_LIBC_THREAD_TLS_H_
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#define TLS_ALIGNMENT 64
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#define TIB_FLAG_TIME_CRITICAL 1
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#define TIB_FLAG_VFORKED 2
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#define TIB_FLAG_WINCRASHING 4
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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struct CosmoFtrace { /* 16 */
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bool ft_once; /* 0 */
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bool ft_noreentry; /* 1 */
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int ft_skew; /* 4 */
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int64_t ft_lastaddr; /* 8 */
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};
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struct CosmoTib {
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struct CosmoTib *tib_self; /* 0x00 */
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struct CosmoFtrace tib_ftracer; /* 0x08 */
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void *tib_garbages; /* 0x18 */
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intptr_t tib_locale; /* 0x20 */
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intptr_t tib_pthread; /* 0x28 */
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struct CosmoTib *tib_self2; /* 0x30 */
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_Atomic(int32_t) tib_tid; /* 0x38 transitions -1 → tid → 0 */
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int32_t tib_errno; /* 0x3c */
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uint64_t tib_flags; /* 0x40 */
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void *tib_nsync;
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int tib_ftrace; /* inherited */
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int tib_strace; /* inherited */
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uint64_t tib_sigmask; /* inherited */
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void *tib_reserved4;
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void *tib_reserved5;
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void *tib_reserved6;
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void *tib_reserved7;
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void *tib_keys[128];
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};
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extern int __threaded;
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extern bool __tls_enabled;
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extern unsigned __tls_index;
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void __require_tls(void);
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void __set_tls(struct CosmoTib *);
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#if defined(__GNUC__) && defined(__x86_64__) && !defined(__STRICT_ANSI__)
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/**
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* Returns location of thread information block.
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*
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* This can't be used in privileged functions.
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*/
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static inline struct CosmoTib *__get_tls(void) {
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struct CosmoTib *_tib;
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asm("mov\t%%fs:0,%0" : "=r"(_tib) : /* no inputs */ : "memory");
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return _tib;
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}
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#endif /* GNU x86-64 */
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_THREAD_TLS_H_ */
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