diff options
Diffstat (limited to 'nptl/nptl-stack.c')
| -rw-r--r-- | nptl/nptl-stack.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/nptl/nptl-stack.c b/nptl/nptl-stack.c index 7853c105be..1a0c460ba8 100644 --- a/nptl/nptl-stack.c +++ b/nptl/nptl-stack.c @@ -19,6 +19,7 @@ #include <nptl-stack.h> #include <ldsodefs.h> +#include <pthreadP.h> /* Maximum size in kB of cache. 40MiBi by default. */ static const size_t stack_cache_maxsize = 40 * 1024 * 1024; @@ -128,3 +129,19 @@ __nptl_deallocate_stack (struct pthread *pd) lll_unlock (GL (dl_stack_cache_lock), LLL_PRIVATE); } libc_hidden_def (__nptl_deallocate_stack) + +/* This function is internal (it has a GLIBC_PRIVATE) version, but it + is widely used (either via weak symbol, or dlsym) to obtain the + __static_tls_size value. This value is then used to adjust the + value of the stack size attribute, so that applications receive the + full requested stack size, not diminished by the TCB and static TLS + allocation on the stack. Once the TCB is separately allocated, + this function should be removed or renamed (if it is still + necessary at that point). */ +size_t +__pthread_get_minstack (const pthread_attr_t *attr) +{ + return (GLRO(dl_pagesize) + __nptl_tls_static_size_for_stack () + + PTHREAD_STACK_MIN); +} +libc_hidden_def (__pthread_get_minstack) |