mirror of
https://github.com/fluencelabs/musl
synced 2025-06-23 03:31:55 +00:00
40 lines
850 B
C
40 lines
850 B
C
#include "pthread_impl.h"
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static struct pthread main_thread;
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#undef errno
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static int *errno_location()
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{
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return pthread_self()->errno_ptr;
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}
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static int init_main_thread()
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{
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main_thread.tlsdesc[0] = -1;
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main_thread.tlsdesc[1] = (long)&main_thread;
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main_thread.tlsdesc[2] = SIZE_MAX/PAGE_SIZE;
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main_thread.tlsdesc[3] = 0x51;
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main_thread.self = &main_thread;
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main_thread.errno_ptr = __errno_location();
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if (__set_thread_area(main_thread.tlsdesc) < 0)
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return -1;
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syscall1(__NR_set_tid_address, (long)&main_thread.tid);
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libc.errno_location = errno_location;
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main_thread.tid = main_thread.pid = getpid();
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return 0;
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}
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#undef pthread_self
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pthread_t pthread_self()
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{
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static int init, failed;
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if (!init) {
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if (failed) return 0;
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if (init_main_thread() < 0) failed = 1;
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if (failed) return 0;
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init = 1;
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}
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return __pthread_self();
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}
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