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author | Marius Vollmer <mvo@zagadka.de> | 1997-06-16 19:09:11 +0000 |
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committer | Marius Vollmer <mvo@zagadka.de> | 1997-06-16 19:09:11 +0000 |
commit | 419e9e117fa110de24b87ace73984f133887078c (patch) | |
tree | f70d0d329433545effbc249fe2e4f98a7f6a79c6 /libguile/dynl.c | |
parent | cc0b33128194d56e08b3deabe3916b8753a30f9f (diff) | |
download | guile-419e9e117fa110de24b87ace73984f133887078c.tar.gz |
* dynl.c (scm_dynamic_call, scm_dynamic_args_call): Wrap dynamic
function call in SCM_DEFER_INTS/SCM_ALLOW_INTS.
(scm_dynamic_link, scm_dynamic_unlink, scm_dynamic_func): Always
call the sysdep functions with deferred ints.
* dynl.c, dynl-dl.c, dynl-dld.c, dynl-shl.c (sysdep_dynl_link,
sysdep_dynl_unlink, sysdep_dynl_func): Expect to be called with
deferred interrupts and insert SCM_ALLOW_INTS before throwing an
error.
* dynl.c (scm_dynamic_unlink, scm_dynamic_call): Return
SCM_UNSPECIFIED.
Diffstat (limited to 'libguile/dynl.c')
-rw-r--r-- | libguile/dynl.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/libguile/dynl.c b/libguile/dynl.c index b480e2281..6458e6c38 100644 --- a/libguile/dynl.c +++ b/libguile/dynl.c @@ -219,7 +219,12 @@ scm_clear_registered_modules () /* Dispatch to the system dependent files * - * They define these static functions: + * They define some static functions. These functions are called with + * deferred interrupts. When they want to throw errors, they are + * expected to insert a SCM_ALLOW_INTS before doing the throw. It + * might work to throw an error while interrupts are deferred (because + * they will be unconditionally allowed the next time a SCM_ALLOW_INTS + * is executed, SCM_DEFER_INTS and SCM_ALLOW_INTS do not nest). */ static void sysdep_dynl_init SCM_P ((void)); @@ -248,7 +253,8 @@ static void no_dynl_error (subr) char *subr; { - scm_misc_error (subr, "dynamic linking not available", SCM_EOL); + SCM_ALLOW_INTS; + scm_misc_error (subr, "dynamic linking not available", SCM_EOL); } static void * @@ -376,9 +382,11 @@ scm_dynamic_unlink (dobj) SCM dobj; { struct dynl_obj *d = get_dynl_obj (dobj, s_dynamic_unlink, SCM_ARG1); + SCM_DEFER_INTS; sysdep_dynl_unlink (d->handle, s_dynamic_unlink); d->handle = NULL; - return SCM_BOOL_T; + SCM_ALLOW_INTS; + return SCM_UNSPECIFIED; } SCM_PROC (s_dynamic_func, "dynamic-func", 2, 0, 0, scm_dynamic_func); @@ -392,7 +400,10 @@ scm_dynamic_func (SCM symb, SCM dobj) symb = scm_coerce_rostring (symb, s_dynamic_func, SCM_ARG1); d = get_dynl_obj (dobj, s_dynamic_func, SCM_ARG2); + SCM_DEFER_INTS; func = sysdep_dynl_func (SCM_CHARS (symb), d->handle, s_dynamic_func); + SCM_ALLOW_INTS; + return scm_ulong2num ((unsigned long)func); } @@ -406,8 +417,10 @@ scm_dynamic_call (SCM func, SCM dobj) if (SCM_NIMP (func) && SCM_ROSTRINGP (func)) func = scm_dynamic_func (func, dobj); fptr = (void (*)()) scm_num2ulong (func, (char *)SCM_ARG1, s_dynamic_call); + SCM_DEFER_INTS; fptr (); - return SCM_BOOL_T; + SCM_ALLOW_INTS; + return SCM_UNSPECIFIED; } SCM_PROC (s_dynamic_args_call, "dynamic-args-call", 3, 0, 0, scm_dynamic_args_call); @@ -425,12 +438,13 @@ scm_dynamic_args_call (func, dobj, args) fptr = (int (*)(int, char **)) scm_num2ulong (func, (char *)SCM_ARG1, s_dynamic_args_call); + SCM_DEFER_INTS; argv = scm_make_argv_from_stringlist (args, &argc, s_dynamic_args_call, SCM_ARG3); - result = (*fptr) (argc, argv); - scm_must_free_argv (argv); + SCM_ALLOW_INTS; + return SCM_MAKINUM(0L+result); } |