[runtime] Cleanup the horrible ifdef hell that is the stack bounds discovery code.

[mono.git] / mono / utils / mono-threads-posix.c

diff --git a/mono/utils/mono-threads-posix.c b/mono/utils/mono-threads-posix.c
index 8a21c553054ececad51ede4fa23538c47ce95490..ce087bbc36bb4e5d7b9d5e12f1885d7a0a5dcd27 100644 (file)
--- a/mono/utils/mono-threads-posix.c
+++ b/mono/utils/mono-threads-posix.c
@@ -9,17 +9,6 @@
 
 #include <config.h>
 
-#if defined(TARGET_OSX)
-/* For pthread_main_np () */
-#define _DARWIN_C_SOURCE 1
-#include <pthread.h>
-#endif
-
-#if defined(__OpenBSD__) || defined(__FreeBSD__)
-#include <pthread.h>
-#include <pthread_np.h>
-#endif
-
 #include <mono/utils/mono-compiler.h>
 #include <mono/utils/mono-semaphore.h>
 #include <mono/utils/mono-threads.h>
@@ -34,11 +23,6 @@
 extern int tkill (pid_t tid, int signal);
 #endif
 
-#if defined(PLATFORM_MACOSX) && defined(HAVE_PTHREAD_GET_STACKADDR_NP)
-void *pthread_get_stackaddr_np(pthread_t);
-size_t pthread_get_stacksize_np(pthread_t);
-#endif
-
 #if defined(_POSIX_VERSION) || defined(__native_client__)
 #include <sys/resource.h>
 #include <signal.h>
@@ -185,113 +169,6 @@ mono_threads_core_resume_created (MonoThreadInfo *info, MonoNativeThreadId tid)
        MONO_SEM_POST (&info->create_suspended_sem);
 }
 
-void
-mono_threads_core_get_stack_bounds (guint8 **staddr, size_t *stsize)
-{
-#if defined(HAVE_PTHREAD_GET_STACKSIZE_NP) && defined(HAVE_PTHREAD_GET_STACKADDR_NP)
-       /* Mac OS X */
-       *staddr = (guint8*)pthread_get_stackaddr_np (pthread_self());
-       *stsize = pthread_get_stacksize_np (pthread_self());
-
-#ifdef TARGET_OSX
-       /*
-        * Mavericks reports stack sizes as 512kb:
-        * http://permalink.gmane.org/gmane.comp.java.openjdk.hotspot.devel/11590
-        * https://bugs.openjdk.java.net/browse/JDK-8020753
-        */
-       if (pthread_main_np () && *stsize == 512 * 1024)
-               *stsize = 2048 * mono_pagesize ();
-#endif
-
-       /* staddr points to the start of the stack, not the end */
-       *staddr -= *stsize;
-
-       /* When running under emacs, sometimes staddr is not aligned to a page size */
-       *staddr = (guint8*)((gssize)*staddr & ~(mono_pagesize() - 1));
-       return;
-
-#elif (defined(HAVE_PTHREAD_GETATTR_NP) || defined(HAVE_PTHREAD_ATTR_GET_NP)) && defined(HAVE_PTHREAD_ATTR_GETSTACK)
-       /* Linux, BSD */
-
-       pthread_attr_t attr;
-       guint8 *current = (guint8*)&attr;
-
-       *staddr = NULL;
-       *stsize = (size_t)-1;
-
-       pthread_attr_init (&attr);
-
-#if     defined(HAVE_PTHREAD_GETATTR_NP)
-       /* Linux */
-       pthread_getattr_np (pthread_self(), &attr);
-
-#elif   defined(HAVE_PTHREAD_ATTR_GET_NP)
-       /* BSD */
-       pthread_attr_get_np (pthread_self(), &attr);
-
-#else
-#error         Cannot determine which API is needed to retrieve pthread attributes.
-#endif
-
-       pthread_attr_getstack (&attr, (void**)staddr, stsize);
-       pthread_attr_destroy (&attr);
-
-       if (*staddr)
-               g_assert ((current > *staddr) && (current < *staddr + *stsize));
-
-       /* When running under emacs, sometimes staddr is not aligned to a page size */
-       *staddr = (guint8*)((gssize)*staddr & ~(mono_pagesize () - 1));
-       return;
-
-#elif defined(__OpenBSD__)
-       /* OpenBSD */
-       /* TODO :   Determine if this code is actually still needed. It may already be covered by the case above. */
-
-       pthread_attr_t attr;
-       guint8 *current = (guint8*)&attr;
-
-       *staddr = NULL;
-       *stsize = (size_t)-1;
-
-       pthread_attr_init (&attr);
-
-       stack_t ss;
-       int rslt;
-
-       rslt = pthread_stackseg_np(pthread_self(), &ss);
-       g_assert (rslt == 0);
-
-       *staddr = (guint8*)((size_t)ss.ss_sp - ss.ss_size);
-       *stsize = ss.ss_size;
-
-       pthread_attr_destroy (&attr);
-
-       if (*staddr)
-               g_assert ((current > *staddr) && (current < *staddr + *stsize));
-
-       /* When running under emacs, sometimes staddr is not aligned to a page size */
-       *staddr = (guint8*)((gssize)*staddr & ~(mono_pagesize () - 1));
-       return;
-
-#elif defined(sun) || defined(__native_client__)
-       /* Solaris/Illumos, NaCl */
-       pthread_attr_t attr;
-       pthread_attr_init (&attr);
-       pthread_attr_getstacksize (&attr, &stsize);
-       pthread_attr_destroy (&attr);
-       *staddr = NULL;
-       return;
-
-#else
-       /* FIXME:   It'd be better to use the 'error' preprocessor macro here so we know
-                   at compile-time if the target platform isn't supported. */
-#warning "Unable to determine how to retrieve a thread's stack-bounds for this platform in 'mono_thread_get_stack_bounds()'."
-       *staddr = NULL;
-       *stsize = 0;
-       return;
-#endif
-}
-
 gboolean
 mono_threads_core_yield (void)
 {