#include <errno.h>
#include <limits.h>
#include <sys/atomics.h>
+#include <sys/mman.h>
#include <unistd.h>
#include "bionic_atomic_inline.h"
// space (see pthread_key_delete)
pthread_key_clean_all();
+ if (thread->alternate_signal_stack != NULL) {
+ // Tell the kernel to stop using the alternate signal stack.
+ stack_t ss;
+ ss.ss_sp = NULL;
+ ss.ss_flags = SS_DISABLE;
+ sigaltstack(&ss, NULL);
+
+ // Free it.
+ munmap(thread->alternate_signal_stack, SIGSTKSZ);
+ thread->alternate_signal_stack = NULL;
+ }
+
// if the thread is detached, destroy the pthread_internal_t
// otherwise, keep it in memory and signal any joiners.
pthread_mutex_lock(&gThreadListLock);
__pthread_cleanup_t* cleanup_stack;
void** tls; /* thread-local storage area */
+ void* alternate_signal_stack;
+
/*
* The dynamic linker implements dlerror(3), which makes it hard for us to implement this
* per-thread buffer by simply using malloc(3) and free(3).