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authorUlrich Drepper <drepper@redhat.com>1999-12-08 04:02:45 +0000
committerUlrich Drepper <drepper@redhat.com>1999-12-08 04:02:45 +0000
commit76a2102b0874ed777309caf846b5f4d021bb830d (patch)
tree29b483d3fa775eeec677c06ecf3dbdfdf5e413d9 /iconv
parent8f61a78efeb714b82549df45f735f5e7ee9c1826 (diff)
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Update.
1999-12-07 Ulrich Drepper <drepper@cygnus.com> * iconv/gconv_db.c (gen_steps): Set __counter initialy to 1. (increment_counter): New function. Broken out of find_derivation. (find_derivation): No need for a lock. Increment counter only when the derivation was already available. * iconv/gconv_dl.c: Add debugging functions. (known_compare): We have to use strcmp.
Diffstat (limited to 'iconv')
-rw-r--r--iconv/gconv_db.c70
-rw-r--r--iconv/gconv_dl.c30
2 files changed, 62 insertions, 38 deletions
diff --git a/iconv/gconv_db.c b/iconv/gconv_db.c
index 8879fe0..842cd1f 100644
--- a/iconv/gconv_db.c
+++ b/iconv/gconv_db.c
@@ -222,7 +222,7 @@ gen_steps (struct derivation_step *best, const char *toset,
result[step_cnt].__shlib_handle = shlib_handle;
result[step_cnt].__modname = shlib_handle->name;
- result[step_cnt].__counter = 0;
+ result[step_cnt].__counter = 1;
result[step_cnt].__fct = shlib_handle->fct;
result[step_cnt].__init_fct = shlib_handle->init_fct;
result[step_cnt].__end_fct = shlib_handle->end_fct;
@@ -281,6 +281,35 @@ gen_steps (struct derivation_step *best, const char *toset,
}
+#ifndef STATIC_GCONV
+static int
+internal_function
+increment_counter (struct __gconv_step *steps, size_t nsteps)
+{
+ /* Increment the user counter. */
+ size_t cnt = nsteps;
+ int result = __GCONV_OK;
+
+ while (cnt-- > 0)
+ if (steps[cnt].__counter++ == 0)
+ {
+ steps[cnt].__shlib_handle =
+ __gconv_find_shlib (steps[cnt].__modname);
+ if (steps[cnt].__shlib_handle == NULL)
+ {
+ /* Oops, this is the second time we use this module (after
+ unloading) and this time loading failed!? */
+ while (++cnt < nsteps)
+ __gconv_release_shlib (steps[cnt].__shlib_handle);
+ result = __GCONV_NOCONV;
+ break;
+ }
+ }
+ return result;
+}
+#endif
+
+
/* The main function: find a possible derivation from the `fromset' (either
the given name or the alias) to the `toset' (again with alias). */
static int
@@ -289,19 +318,11 @@ find_derivation (const char *toset, const char *toset_expand,
const char *fromset, const char *fromset_expand,
struct __gconv_step **handle, size_t *nsteps)
{
- __libc_lock_define_initialized (static, lock)
struct derivation_step *first, *current, **lastp, *solution = NULL;
int best_cost_hi = INT_MAX;
int best_cost_lo = INT_MAX;
int result;
- result = derivation_lookup (fromset_expand ?: fromset, toset_expand ?: toset,
- handle, nsteps);
- if (result == __GCONV_OK)
- return result;
-
- __libc_lock_lock (lock);
-
/* There is a small chance that this derivation is meanwhile found. This
can happen if in `find_derivation' we look for this derivation, didn't
find it but at the same time another thread looked for this derivation. */
@@ -309,7 +330,9 @@ find_derivation (const char *toset, const char *toset_expand,
handle, nsteps);
if (result == __GCONV_OK)
{
- __libc_lock_unlock (lock);
+#ifndef STATIC_GCONV
+ result = increment_counter (*handle, *nsteps);
+#endif
return result;
}
@@ -604,8 +627,6 @@ find_derivation (const char *toset, const char *toset_expand,
add_derivation (fromset_expand ?: fromset, toset_expand ?: toset,
*handle, *nsteps);
- __libc_lock_unlock (lock);
-
return result;
}
@@ -667,31 +688,6 @@ __gconv_find_transform (const char *toset, const char *fromset,
result = find_derivation (toset, toset_expand, fromset, fromset_expand,
handle, nsteps);
-#ifndef STATIC_GCONV
- /* Increment the user counter. */
- if (result == __GCONV_OK)
- {
- size_t cnt = *nsteps;
- struct __gconv_step *steps = *handle;
-
- while (cnt > 0)
- if (steps[--cnt].__counter++ == 0)
- {
- steps[cnt].__shlib_handle =
- __gconv_find_shlib (steps[cnt].__modname);
- if (steps[cnt].__shlib_handle == NULL)
- {
- /* Oops, this is the second time we use this module (after
- unloading) and this time loading failed!? */
- while (++cnt < *nsteps)
- __gconv_release_shlib (steps[cnt].__shlib_handle);
- result = __GCONV_NOCONV;
- break;
- }
- }
- }
-#endif
-
/* Release the lock. */
__libc_lock_unlock (lock);
diff --git a/iconv/gconv_dl.c b/iconv/gconv_dl.c
index 7d327ed..d4738b5 100644
--- a/iconv/gconv_dl.c
+++ b/iconv/gconv_dl.c
@@ -28,6 +28,13 @@
#include <gconv_int.h>
+
+#ifdef DEBUG
+/* For debugging purposes. */
+static void print_all (void);
+#endif
+
+
/* This is a tuning parameter. If a transformation module is not used
anymore it gets not immediately unloaded. Instead we wait a certain
number of load attempts for further modules. If none of the
@@ -50,7 +57,7 @@ known_compare (const void *p1, const void *p2)
const struct __gconv_loaded_object *s2 =
(const struct __gconv_loaded_object *) p2;
- return (intptr_t) s1->handle - (intptr_t) s2->handle;
+ return strcmp (s1->name, s2->name);
}
/* Open the gconv database if necessary. A non-negative return value
@@ -198,3 +205,24 @@ free_mem (void)
__tdestroy (loaded, do_release_all);
}
text_set_element (__libc_subfreeres, free_mem);
+
+
+#ifdef DEBUG
+static void
+do_print (const void *nodep, VISIT value, int level)
+{
+ struct __gconv_loaded_object *obj = *(struct __gconv_loaded_object **) nodep;
+
+ printf ("%10s: \"%s\", %d\n",
+ value == leaf ? "leaf" :
+ value == preorder ? "preorder" :
+ value == postorder ? "postorder" : "endorder",
+ obj->name, obj->counter);
+}
+
+static void
+print_all (void)
+{
+ __twalk (loaded, do_print);
+}
+#endif