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authorAndy Wingo <wingo@pobox.com>2011-11-23 12:13:12 +0100
committerAndy Wingo <wingo@pobox.com>2011-11-23 12:53:38 +0100
commitaafb4ed72414dd0dccc6ff27a59318adfda26abf (patch)
treebb02ba84034611d66207c33d6a1ebf78db798721 /libguile/threads.c
parentadf8616fabbf3248cfbe4f075b5f2c02fed9e5c2 (diff)
downloadguile-aafb4ed72414dd0dccc6ff27a59318adfda26abf.tar.gz
optional default-value arg to make-fluid
* libguile/fluids.c (grow_dynamic_state, new_fluid): Arrange for the default value in the dynamic-state vector to be SCM_UNDEFINED instead of SCM_BOOL_F. If the value in the dynamic-state is #f, default to a value attached to the fluid instead. This allows useful default values. (scm_make_fluid_with_default): New function, allows the user to specify a default value for the fluid. Defaults to #f. Bound to `make-fluid' on the Scheme side. (scm_make_unbound_fluid): Use SCM_UNDEFINED as the default in all threads. (scm_fluid_unset_x): Also unset the default value. Not sure if this is the right thing. (fluid_ref): Update to the new default-value strategy. * libguile/threads.c (scm_i_reset_fluid): Reset to SCM_UNDEFINED. * libguile/threads.h: Remove extra arg to scm_i_reset_fluid. * libguile/vm-i-system.c (fluid-ref): Update to new default-value strategy. * module/ice-9/vlist.scm (block-growth-factor): Default to 2 in all threads. Fixes http://debbugs.gnu.org/10093.
Diffstat (limited to 'libguile/threads.c')
-rw-r--r--libguile/threads.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libguile/threads.c b/libguile/threads.c
index 752354008..e4d3e2181 100644
--- a/libguile/threads.c
+++ b/libguile/threads.c
@@ -478,7 +478,7 @@ static SCM scm_i_default_dynamic_state;
/* Run when a fluid is collected. */
void
-scm_i_reset_fluid (size_t n, SCM val)
+scm_i_reset_fluid (size_t n)
{
scm_i_thread *t;
@@ -489,7 +489,7 @@ scm_i_reset_fluid (size_t n, SCM val)
SCM v = SCM_I_DYNAMIC_STATE_FLUIDS (t->dynamic_state);
if (n < SCM_SIMPLE_VECTOR_LENGTH (v))
- SCM_SIMPLE_VECTOR_SET (v, n, val);
+ SCM_SIMPLE_VECTOR_SET (v, n, SCM_UNDEFINED);
}
scm_i_pthread_mutex_unlock (&thread_admin_mutex);
}