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Make _Thread_local work across platforms

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We now rewrite the binary image at runtime on Windows and XNU to change
mov %fs:0,%reg instructions to use %gs instead. There's also simpler
threading API introduced by this change and it's called _spawn() and
_join(), which has replaced most clone() usage.
This commit is contained in:
Justine Tunney 2022-07-10 04:01:17 -07:00
parent e4d6e263d4
commit 5f4f6b0e69
51 changed files with 808 additions and 1043 deletions
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20
libc/thread/spawn.h Normal file
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@ -0,0 +1,20 @@
#ifndef COSMOPOLITAN_LIBC_THREAD_SPAWN_H_
#define COSMOPOLITAN_LIBC_THREAD_SPAWN_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct spawn {
int ptid;
int *ctid;
char *stk;
char *tls;
char *tib;
};
int _spawn(int (*)(void *, int), void *, struct spawn *) hidden;
int _join(struct spawn *) hidden;
char *_mktls(char **) hidden;
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_THREAD_SPAWN_H_ */