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https://github.com/fluencelabs/musl
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870cc67977
some functions that should have been testing whether pthread_self() had been called and initialized the thread pointer were instead testing whether pthread_create() had been called and actually made the program "threaded". while it's unlikely any mismatch would occur in real-world problems, this could have introduced subtle bugs. now, we store the address of the main thread's thread descriptor in the libc structure and use its presence as a flag that the thread register is initialized. note that after fork, the calling thread (not necessarily the original main thread) is the new main thread.
16 lines
333 B
C
16 lines
333 B
C
#include "pthread_impl.h"
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int pthread_setcancelstate(int new, int *old)
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{
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if (new > 1U) return EINVAL;
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if (libc.main_thread) {
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struct pthread *self = __pthread_self();
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if (old) *old = self->canceldisable;
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self->canceldisable = new;
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} else {
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if (old) *old = libc.canceldisable;
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libc.canceldisable = new;
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}
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return 0;
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}
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