From 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 12 Feb 2011 00:22:29 -0500 Subject: initial check-in, version 0.5.0 --- src/thread/pthread_key_create.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 src/thread/pthread_key_create.c (limited to 'src/thread/pthread_key_create.c') diff --git a/src/thread/pthread_key_create.c b/src/thread/pthread_key_create.c new file mode 100644 index 00000000..efc38046 --- /dev/null +++ b/src/thread/pthread_key_create.c @@ -0,0 +1,25 @@ +#include "pthread_impl.h" + +const size_t __pthread_tsd_size = sizeof(void *) * PTHREAD_KEYS_MAX; + +static void nodtor(void *dummy) +{ +} + +int pthread_key_create(pthread_key_t *k, void (*dtor)(void *)) +{ + static void (*keys[PTHREAD_KEYS_MAX])(void *); + int i = (uintptr_t)&k / 16 % PTHREAD_KEYS_MAX; + int j = i; + + libc.tsd_keys = keys; + if (!dtor) dtor = nodtor; + /* Cheap trick - &k cannot match any destructor pointer */ + while (a_cas_p(keys+j, 0, &k) + && (j=(j+1)%PTHREAD_KEYS_MAX) != i); + if (keys[j] != (void (*)(void *))&k) + return EAGAIN; + keys[j] = dtor; + *k = j; + return 0; +} -- cgit v1.2.1