diff options
-rw-r--r-- | configure.ac | 7 | ||||
-rw-r--r-- | libguile/threads.c | 31 |
2 files changed, 38 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index ba6ff4900..6f24d8db4 100644 --- a/configure.ac +++ b/configure.ac @@ -1256,6 +1256,13 @@ AC_CHECK_TYPE([GC_fn_type], [], [#include <gc/gc.h>]) +# `GC_stack_base' is not available in GC 7.1 and earlier. +AC_CHECK_TYPE([struct GC_stack_base], + [AC_DEFINE([HAVE_GC_STACK_BASE], [1], + [Define this if the `GC_stack_base' type is available.])], + [], + [#include <gc/gc.h>]) + LIBS="$save_LIBS" diff --git a/libguile/threads.c b/libguile/threads.c index e2e17acc6..6f75dbe19 100644 --- a/libguile/threads.c +++ b/libguile/threads.c @@ -79,6 +79,37 @@ typedef void * (* GC_fn_type) (void *); #endif +#ifndef GC_SUCCESS +#define GC_SUCCESS 0 +#endif + +#ifndef GC_UNIMPLEMENTED +#define GC_UNIMPLEMENTED 3 +#endif + +/* Likewise struct GC_stack_base is missing before 7.1. */ +#ifndef HAVE_GC_STACK_BASE +struct GC_stack_base; + +static int +GC_register_my_thread (struct GC_stack_base *) +{ + return GC_UNIMPLEMENTED; +} + +static void +GC_unregister_my_thread () +{ +} + +static void * +GC_call_with_stack_base(void * (*fn) (struct GC_stack_base*, void*), void *arg) +{ + return fn (NULL, arg); +} +#endif + + /* Now define with_gc_active and with_gc_inactive. */ #if (defined(HAVE_GC_DO_BLOCKING) && defined (HAVE_DECL_GC_DO_BLOCKING) && defined (HAVE_GC_CALL_WITH_GC_ACTIVE)) |