blob: c7b13f9a7f4dde6b4be9f4657ca7c970b070ebfc [file] [log] [blame]
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <sys/limits.h>
#include "libcgo.h"
#define magic1 (0x23581321U)
// PTHREAD_KEYS_MAX has been added to sys/limits.h at head in bionic:
// TODO(crawshaw): remove this definition when NDK r10d is required.
#define PTHREAD_KEYS_MAX 128
// inittls allocates a thread-local storage slot for g.
// It finds the first available slot using pthread_key_create and uses
// it as the offset value for runtime.tlsg.
static void
inittls(void **tlsg, void **tlsbase)
pthread_key_t k;
int i, err;
err = pthread_key_create(&k, nil);
if(err != 0) {
fatalf("pthread_key_create failed: %d", err);
pthread_setspecific(k, (void*)magic1);
for (i=0; i<PTHREAD_KEYS_MAX; i++) {
if (*(tlsbase+i) == (void*)magic1) {
*tlsg = (void*)(i*sizeof(void *));
pthread_setspecific(k, 0);
fatalf("could not find pthread key");
void (*x_cgo_inittls)(void **tlsg, void **tlsbase) = inittls;