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author | Andy Wingo <wingo@pobox.com> | 2009-11-27 20:36:09 +0100 |
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committer | Andy Wingo <wingo@pobox.com> | 2009-12-01 21:00:25 +0100 |
commit | a3e923770ef0e491b58aaac94413cba893eebcfc (patch) | |
tree | 7e536bb37d21ada66978ca3f1dcf99f883c17046 /libguile/deprecated.c | |
parent | 6c9e8a53542019d1d207f25bfb18fbba9aabf59d (diff) | |
download | guile-a3e923770ef0e491b58aaac94413cba893eebcfc.tar.gz |
formally deprecate trampolines
* libguile/eval.c:
* libguile/deprecated.h:
* libguile/deprecated.c (scm_trampoline_0, scm_trampoline_1)
(scm_trampoline_2): Actually deprecate trampolines.
* srfi/srfi-1.c: Fix all trampoline uses in srfi-1.c.
Diffstat (limited to 'libguile/deprecated.c')
-rw-r--r-- | libguile/deprecated.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libguile/deprecated.c b/libguile/deprecated.c index 058ebb73c..1f35d2a55 100644 --- a/libguile/deprecated.c +++ b/libguile/deprecated.c @@ -1573,6 +1573,45 @@ scm_gc_set_debug_check_freelist_x (SCM flag) #endif +/* Trampolines + * + * Trampolines were an intent to speed up calling the same Scheme procedure many + * times from C. + * + * However, this was the wrong thing to optimize; if you really know what you're + * calling, call its function directly, otherwise you're in Scheme-land, and we + * have many better tricks there (inlining, for example, which can remove the + * need for closures and free variables). + * + * Also, in the normal debugging case, trampolines were being computed but not + * used. Silliness. + */ + +scm_t_trampoline_0 +scm_trampoline_0 (SCM proc) +{ + scm_c_issue_deprecation_warning + ("`scm_trampoline_0' is deprecated. Just use `scm_call_0' instead."); + return scm_call_0; +} + +scm_t_trampoline_1 +scm_trampoline_1 (SCM proc) +{ + scm_c_issue_deprecation_warning + ("`scm_trampoline_1' is deprecated. Just use `scm_call_1' instead."); + return scm_call_1; +} + +scm_t_trampoline_2 +scm_trampoline_2 (SCM proc) +{ + scm_c_issue_deprecation_warning + ("`scm_trampoline_2' is deprecated. Just use `scm_call_2' instead."); + return scm_call_2; +} + + void scm_i_init_deprecated () { |