Enable compilation for Cygwin with MPROTECT_VDB

Note: It just compiles but not working.

* include/private/gc_priv.h [GC_WIN32_THREADS && MPROTECT_VDB]
(GC_set_write_fault_handler): Do not declare if CYGWIN32.
* os_dep.c [MPROTECT_VDB && !DARWIN && !USE_WINALLOC]: Do not include
sys/syscall.h if CYGWIN32.
* os_dep.c [MPROTECT_VDB && CYGWIN32] (CODE_OK): Define (to true).
* os_dep.c [MPROTECT_VDB && GC_WIN32_THREADS]
(GC_set_write_fault_handler): Do not define if CYGWIN32.
* win32_threads.c [MPROTECT_VDB] (GC_register_my_thread_inner): Do not
call GC_gww_dirty_init() and GC_set_write_fault_handler() if CYGWIN32.

diff --git a/include/private/gc_priv.h b/include/private/gc_priv.h
index 8bcd690..953a31f 100644 (file)
--- a/include/private/gc_priv.h
+++ b/include/private/gc_priv.h
@@ -2405,7 +2405,7 @@ GC_INNER void *GC_store_debug_info_inner(void *p, word sz, const char *str,
 #ifdef GC_WIN32_THREADS
   GC_INNER void GC_get_next_stack(char *start, char * limit, char **lo,
                                   char **hi);
-# ifdef MPROTECT_VDB
+# if defined(MPROTECT_VDB) && !defined(CYGWIN32)
     GC_INNER void GC_set_write_fault_handler(void);
 # endif
 # if defined(WRAP_MARK_SOME) && !defined(GC_PTHREADS)

diff --git a/os_dep.c b/os_dep.c
index 17478ec..c84a4d8 100644 (file)
--- a/os_dep.c
+++ b/os_dep.c
@@ -3094,7 +3094,7 @@ GC_API GC_push_other_roots_proc GC_CALL GC_get_push_other_roots(void)
 # elif !defined(USE_WINALLOC)
 #   include <sys/mman.h>
 #   include <signal.h>
-#   if !defined(HAIKU)
+#   if !defined(CYGWIN32) && !defined(HAIKU)
 #     include <sys/syscall.h>
 #   endif
 
@@ -3272,7 +3272,7 @@ GC_API GC_push_other_roots_proc GC_CALL GC_get_push_other_roots(void)
 #     define CODE_OK (si -> si_code == 2 /* experimentally determined */)
 #   elif defined(IRIX5)
 #     define CODE_OK (si -> si_code == EACCES)
-#   elif defined(HAIKU) || defined(HURD)
+#   elif defined(CYGWIN32) || defined(HAIKU) || defined(HURD)
 #     define CODE_OK TRUE
 #   elif defined(LINUX)
 #     define CODE_OK TRUE
@@ -3411,7 +3411,7 @@ GC_API GC_push_other_roots_proc GC_CALL GC_get_push_other_roots(void)
 #   endif
   }
 
-# ifdef GC_WIN32_THREADS
+# if defined(GC_WIN32_THREADS) && !defined(CYGWIN32)
     GC_INNER void GC_set_write_fault_handler(void)
     {
       SetUnhandledExceptionFilter(GC_write_fault_handler);

diff --git a/win32_threads.c b/win32_threads.c
index a298534..17df544 100644 (file)
--- a/win32_threads.c
+++ b/win32_threads.c
@@ -392,7 +392,7 @@ STATIC GC_thread GC_register_my_thread_inner(const struct GC_stack_base *sb,
   /* The following should be a no-op according to the win32     */
   /* documentation.  There is empirical evidence that it        */
   /* isn't.             - HB                                    */
-# if defined(MPROTECT_VDB)
+# if defined(MPROTECT_VDB) && !defined(CYGWIN32)
     if (GC_incremental
 #       ifdef GWW_VDB
           && !GC_gww_dirty_init()