simplify vasprintf implementation

[musl] / src / thread / pthread_getattr_np.c

diff --git a/src/thread/pthread_getattr_np.c b/src/thread/pthread_getattr_np.c
index 945242b..10ea512 100644 (file)
--- a/src/thread/pthread_getattr_np.c
+++ b/src/thread/pthread_getattr_np.c
@@ -1,4 +1,6 @@
+#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)
@@ -13,7 +15,7 @@ int pthread_getattr_np(pthread_t t, pthread_attr_t *a)
                size_t l = PAGE_SIZE;
                p += -(uintptr_t)p & PAGE_SIZE-1;
                a->_a_stackaddr = (uintptr_t)p;
-               while (!posix_madvise(p-l-PAGE_SIZE, PAGE_SIZE, POSIX_MADV_NORMAL))
+               while (mremap(p-l-PAGE_SIZE, PAGE_SIZE, 2*PAGE_SIZE, 0)==MAP_FAILED && errno==ENOMEM)
                        l += PAGE_SIZE;
                a->_a_stacksize = l - DEFAULT_STACK_SIZE;
        }