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#include "pthread_impl.h"
volatile size_t __pthread_tsd_size = sizeof(void *) * PTHREAD_KEYS_MAX;
void *__pthread_tsd_main[PTHREAD_KEYS_MAX] = { 0 };
static void (*volatile keys[PTHREAD_KEYS_MAX])(void *);
static void nodtor(void *dummy)
{
}
int __pthread_key_create(pthread_key_t *k, void (*dtor)(void *))
{
unsigned i = (uintptr_t)&k / 16 % PTHREAD_KEYS_MAX;
unsigned j = i;
if (libc.has_thread_pointer) {
pthread_t self = __pthread_self();
/* This can only happen in the main thread before
* pthread_create has been called. */
if (!self->tsd) self->tsd = __pthread_tsd_main;
}
if (!dtor) dtor = nodtor;
do {
if (!a_cas_p(keys+j, 0, (void *)dtor)) {
*k = j;
return 0;
}
} while ((j=(j+1)%PTHREAD_KEYS_MAX) != i);
return EAGAIN;
}
int __pthread_key_delete(pthread_key_t k)
{
keys[k] = 0;
return 0;
}
void __pthread_tsd_run_dtors()
{
pthread_t self = __pthread_self();
int i, j, not_finished = self->tsd_used;
for (j=0; not_finished && j<PTHREAD_DESTRUCTOR_ITERATIONS; j++) {
not_finished = 0;
for (i=0; i<PTHREAD_KEYS_MAX; i++) {
if (self->tsd[i] && keys[i]) {
void *tmp = self->tsd[i];
self->tsd[i] = 0;
keys[i](tmp);
not_finished = 1;
}
}
}
}
weak_alias(__pthread_key_delete, pthread_key_delete);
weak_alias(__pthread_key_create, pthread_key_create);
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