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Tidy up the threading implementation

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The organization of the source files is now much more rational.
Old experiments that didn't work out are now deleted. Naming of
things like files is now more intuitive.
This commit is contained in:
Justine Tunney 2022-09-10 02:56:25 -07:00
parent e9272f03fb
commit 155b378a39
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GPG key ID: BE714B4575D6E328
199 changed files with 526 additions and 685 deletions
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45
libc/thread/tls.h Normal file
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#ifndef COSMOPOLITAN_LIBC_THREAD_TLS_H_
#define COSMOPOLITAN_LIBC_THREAD_TLS_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct CosmoFtrace { /* 16 */
bool ft_once; /* 0 */
bool ft_noreentry; /* 1 */
int ft_skew; /* 4 */
int64_t ft_lastaddr; /* 8 */
};
struct CosmoTib {
struct CosmoTib *tib_self; /* 0x00 */
struct CosmoFtrace tib_ftrace; /* 0x08 */
void *tib_garbages; /* 0x18 */
intptr_t tib_locale; /* 0x20 */
intptr_t tib_pthread; /* 0x28 */
struct CosmoTib *tib_self2; /* 0x30 */
int32_t tib_tid; /* 0x38 */
int32_t tib_errno; /* 0x3c */
};
extern int __threaded;
extern bool __tls_enabled;
extern unsigned __tls_index;
void __require_tls(void);
#if defined(__GNUC__) && defined(__x86_64__) && !defined(__STRICT_ANSI__)
/**
* Returns location of thread information block.
*
* This can't be used in privileged functions.
*/
static inline struct CosmoTib *__get_tls(void) {
struct CosmoTib *_tib;
asm("mov\t%%fs:0,%0" : "=r"(_tib) : /* no inputs */ : "memory");
return _tib;
}
#endif /* GNU x86-64 */
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_THREAD_TLS_H_ */