tests/main_stack_custom.c

   1 #include <stdlib.h>
   2 #include <pthread.h>
   3 #include "darwintest_defaults.h"
   4 #include <machine/vmparam.h>
   5
   6 T_DECL(main_stack_custom, "tests the reported values for a custom main thread stack"){
   7         T_EXPECT_EQ((size_t)STACKSIZE, pthread_get_stacksize_np(pthread_self()), NULL);
   8
   9         const uintptr_t stackaddr = (uintptr_t)pthread_get_stackaddr_np(pthread_self());
  10         size_t stacksize = pthread_get_stacksize_np(pthread_self());
  11         T_LOG("stack: %zx -> %zx (+%zx)", stackaddr - stacksize, stackaddr, stacksize);
  12         T_EXPECT_LT((uintptr_t)__builtin_frame_address(0), stackaddr, NULL);
  13         T_EXPECT_GT((uintptr_t)__builtin_frame_address(0), stackaddr - stacksize, NULL);
  14
  15         struct rlimit lim;
  16         T_QUIET; T_ASSERT_POSIX_SUCCESS(getrlimit(RLIMIT_STACK, &lim), NULL);
  17         lim.rlim_cur = lim.rlim_cur + 32 * PAGE_SIZE;
  18         T_EXPECT_EQ(setrlimit(RLIMIT_STACK, &lim), -1, "setrlimit for stack should fail with custom stack");
  19         T_EXPECT_EQ((size_t)STACKSIZE, pthread_get_stacksize_np(pthread_self()), "reported stacksize shouldn't change");
  20 }