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musl/src/thread/cancellation.c

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initial check-in, version 0.5.0
2011-02-12 00:22:29 -05:00
#include "pthread_impl.h"
match glibc/lsb cancellation abi on i386 glibc made the ridiculous choice to use pass-by-register calling convention for these functions, which is impossible to duplicate directly on non-gcc compilers. instead, we use ugly asm to wrap and convert the calling convention. presumably this works with every compiler anyone could potentially want to use.
2011-03-25 22:13:57 -04:00
#ifdef __pthread_register_cancel
#undef __pthread_register_cancel
#undef __pthread_unregister_cancel
fix static linking dependency bloat with cancellation previously, pthread_cleanup_push/pop were pulling in all of pthread_create due to dependency on the __pthread_unwind_next function. this was not needed, as cancellation cleanup handlers can never be called unless pthread_exit or pthread_cancel is reachable.
2011-08-03 19:45:21 -04:00
#undef __pthread_unwind_next
match glibc/lsb cancellation abi on i386 glibc made the ridiculous choice to use pass-by-register calling convention for these functions, which is impossible to duplicate directly on non-gcc compilers. instead, we use ugly asm to wrap and convert the calling convention. presumably this works with every compiler anyone could potentially want to use.
2011-03-25 22:13:57 -04:00
#define __pthread_register_cancel __pthread_register_cancel_3
#define __pthread_unregister_cancel __pthread_unregister_cancel_3
fix static linking dependency bloat with cancellation previously, pthread_cleanup_push/pop were pulling in all of pthread_create due to dependency on the __pthread_unwind_next function. this was not needed, as cancellation cleanup handlers can never be called unless pthread_exit or pthread_cancel is reachable.
2011-08-03 19:45:21 -04:00
#define __pthread_unwind_next __pthread_unwind_next_3
match glibc/lsb cancellation abi on i386 glibc made the ridiculous choice to use pass-by-register calling convention for these functions, which is impossible to duplicate directly on non-gcc compilers. instead, we use ugly asm to wrap and convert the calling convention. presumably this works with every compiler anyone could potentially want to use.
2011-03-25 22:13:57 -04:00
#endif
fix static linking dependency bloat with cancellation previously, pthread_cleanup_push/pop were pulling in all of pthread_create due to dependency on the __pthread_unwind_next function. this was not needed, as cancellation cleanup handlers can never be called unless pthread_exit or pthread_cancel is reachable.
2011-08-03 19:45:21 -04:00
static void dummy(struct __ptcb *cb)
{
}
weak_alias(dummy, __pthread_do_unwind);
void __pthread_unwind_next(struct __ptcb *cb)
{
__pthread_do_unwind(cb);
}
initial check-in, version 0.5.0
2011-02-12 00:22:29 -05:00
void __pthread_register_cancel(struct __ptcb *cb)
{
struct pthread *self = pthread_self();
cb->__next = self->cancelbuf;
self->cancelbuf = cb;
}
void __pthread_unregister_cancel(struct __ptcb *cb)
{
reorganize thread exit code, make pthread_exit call cancellation handlers (pt2)
2011-02-13 19:58:30 -05:00
struct pthread *self = __pthread_self();
initial check-in, version 0.5.0
2011-02-12 00:22:29 -05:00
self->cancelbuf = self->cancelbuf->__next;
}
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