diff options
Diffstat (limited to 'libc-top-half/musl/src/thread/pthread_getattr_np.c')
-rw-r--r-- | libc-top-half/musl/src/thread/pthread_getattr_np.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/thread/pthread_getattr_np.c b/libc-top-half/musl/src/thread/pthread_getattr_np.c new file mode 100644 index 0000000..2881831 --- /dev/null +++ b/libc-top-half/musl/src/thread/pthread_getattr_np.c @@ -0,0 +1,24 @@ +#define _GNU_SOURCE +#include "pthread_impl.h" +#include "libc.h" +#include <sys/mman.h> + +int pthread_getattr_np(pthread_t t, pthread_attr_t *a) +{ + *a = (pthread_attr_t){0}; + a->_a_detach = t->detach_state>=DT_DETACHED; + a->_a_guardsize = t->guard_size; + if (t->stack) { + a->_a_stackaddr = (uintptr_t)t->stack; + a->_a_stacksize = t->stack_size; + } else { + char *p = (void *)libc.auxv; + size_t l = PAGE_SIZE; + p += -(uintptr_t)p & PAGE_SIZE-1; + a->_a_stackaddr = (uintptr_t)p; + while (mremap(p-l-PAGE_SIZE, PAGE_SIZE, 2*PAGE_SIZE, 0)==MAP_FAILED && errno==ENOMEM) + l += PAGE_SIZE; + a->_a_stacksize = l; + } + return 0; +} |