[apple/libpthread.git] / tests / main_stack_custom.c

#include <stdlib.h>
#include <pthread.h>
#include <darwintest.h>
#include <machine/vmparam.h>

T_DECL(main_stack_custom, "tests the reported values for a custom main thread stack"){
	T_EXPECT_EQ((size_t)STACKSIZE, pthread_get_stacksize_np(pthread_self()), NULL);

	const uintptr_t stackaddr = (uintptr_t)pthread_get_stackaddr_np(pthread_self());
	size_t stacksize = pthread_get_stacksize_np(pthread_self());
	T_LOG("stack: %zx -> %zx (+%zx)", stackaddr - stacksize, stackaddr, stacksize);
	T_EXPECT_LT((uintptr_t)__builtin_frame_address(0), stackaddr, NULL);
	T_EXPECT_GT((uintptr_t)__builtin_frame_address(0), stackaddr - stacksize, NULL);

	struct rlimit lim;
	T_QUIET; T_ASSERT_POSIX_SUCCESS(getrlimit(RLIMIT_STACK, &lim), NULL);
	lim.rlim_cur = lim.rlim_cur / 8;
	T_EXPECT_EQ(setrlimit(RLIMIT_STACK, &lim), -1, "setrlimit for stack should fail with custom stack");
	T_EXPECT_EQ((size_t)STACKSIZE, pthread_get_stacksize_np(pthread_self()), "reported stacksize shouldn't change");
}
Commit	Line	Data
2546420a A	1	#include <stdlib.h>
	2	#include <pthread.h>
	3	#include <darwintest.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 / 8;
	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	}