mesa: Port errors.c to util/list.h instead of simple_list.

There is widespread consensus that simple_list should go away.
This patch converts one more use to the modern kernel-style list.

Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>

src/mesa/main/debug_output.c

@@ -33,7 +33,7 @@
 #include "mtypes.h"
 #include "version.h"
 #include "util/hash_table.h"
-#include "util/simple_list.h"
+#include "util/list.h"
 
 
 static simple_mtx_t DynamicIDMutex = _SIMPLE_MTX_INITIALIZER_NP;
@@ -45,7 +45,7 @@ static GLuint NextDynamicID = 1;
  */
 struct gl_debug_element
 {
-   struct simple_node link;
+   struct list_head link;
 
    GLuint ID;
    /* at which severity levels (mesa_debug_severity) is the message enabled */
@@ -55,7 +55,7 @@ struct gl_debug_element
 
 struct gl_debug_namespace
 {
-   struct simple_node Elements;
+   struct list_head Elements;
    GLbitfield DefaultState;
 };
 
@@ -250,7 +250,7 @@ debug_message_store(struct gl_debug_message *msg,
 static void
 debug_namespace_init(struct gl_debug_namespace *ns)
 {
-   make_empty_list(&ns->Elements);
+   list_inithead(&ns->Elements);
 
    /* Enable all the messages with severity HIGH or MEDIUM by default */
    ns->DefaultState = (1 << MESA_DEBUG_SEVERITY_MEDIUM ) |
@@ -261,24 +261,18 @@ debug_namespace_init(struct gl_debug_namespace *ns)
 static void
 debug_namespace_clear(struct gl_debug_namespace *ns)
 {
-   struct simple_node *node, *tmp;
-
-   foreach_s(node, tmp, &ns->Elements)
-      free(node);
+   list_for_each_entry_safe(struct gl_debug_element, elem, &ns->Elements, link)
+      free(elem);
 }
 
 static bool
 debug_namespace_copy(struct gl_debug_namespace *dst,
                      const struct gl_debug_namespace *src)
 {
-   struct simple_node *node;
-
    dst->DefaultState = src->DefaultState;
 
-   make_empty_list(&dst->Elements);
-   foreach(node, &src->Elements) {
-      const struct gl_debug_element *elem =
-         (const struct gl_debug_element *) node;
+   list_inithead(&dst->Elements);
+   list_for_each_entry(struct gl_debug_element, elem, &src->Elements, link) {
       struct gl_debug_element *copy;
 
       copy = malloc(sizeof(*copy));
@@ -289,7 +283,7 @@ debug_namespace_copy(struct gl_debug_namespace *dst,
 
       copy->ID = elem->ID;
       copy->State = elem->State;
-      insert_at_tail(&dst->Elements, &copy->link);
+      list_addtail(&copy->link, &dst->Elements);
    }
 
    return true;
@@ -305,11 +299,9 @@ debug_namespace_set(struct gl_debug_namespace *ns,
    const uint32_t state = (enabled) ?
       ((1 << MESA_DEBUG_SEVERITY_COUNT) - 1) : 0;
    struct gl_debug_element *elem = NULL;
-   struct simple_node *node;
 
    /* find the element */
-   foreach(node, &ns->Elements) {
-      struct gl_debug_element *tmp = (struct gl_debug_element *) node;
+   list_for_each_entry(struct gl_debug_element, tmp, &ns->Elements, link) {
       if (tmp->ID == id) {
          elem = tmp;
          break;
@@ -319,7 +311,7 @@ debug_namespace_set(struct gl_debug_namespace *ns,
    /* we do not need the element if it has the default state */
    if (ns->DefaultState == state) {
       if (elem) {
-         remove_from_list(&elem->link);
+         list_del(&elem->link);
          free(elem);
       }
       return true;
@@ -331,7 +323,7 @@ debug_namespace_set(struct gl_debug_namespace *ns,
          return false;
 
       elem->ID = id;
-      insert_at_tail(&ns->Elements, &elem->link);
+      list_addtail(&elem->link, &ns->Elements);
    }
 
    elem->State = state;
@@ -349,14 +341,13 @@ debug_namespace_set_all(struct gl_debug_namespace *ns,
                         enum mesa_debug_severity severity,
                         bool enabled)
 {
-   struct simple_node *node, *tmp;
    uint32_t mask, val;
 
    /* set all elements to the same state */
    if (severity == MESA_DEBUG_SEVERITY_COUNT) {
       ns->DefaultState = (enabled) ? ((1 << severity) - 1) : 0;
       debug_namespace_clear(ns);
-      make_empty_list(&ns->Elements);
+      list_inithead(&ns->Elements);
       return;
    }
 
@@ -365,13 +356,12 @@ debug_namespace_set_all(struct gl_debug_namespace *ns,
 
    ns->DefaultState = (ns->DefaultState & ~mask) | val;
 
-   foreach_s(node, tmp, &ns->Elements) {
-      struct gl_debug_element *elem = (struct gl_debug_element *) node;
-
+   list_for_each_entry_safe(struct gl_debug_element, elem, &ns->Elements,
+                            link) {
       elem->State = (elem->State & ~mask) | val;
       if (elem->State == ns->DefaultState) {
-         remove_from_list(node);
-         free(node);
+         list_del(&elem->link);
+         free(elem);
       }
    }
 }
@@ -383,13 +373,10 @@ static bool
 debug_namespace_get(const struct gl_debug_namespace *ns, GLuint id,
                     enum mesa_debug_severity severity)
 {
-   struct simple_node *node;
    uint32_t state;
 
    state = ns->DefaultState;
-   foreach(node, &ns->Elements) {
-      struct gl_debug_element *elem = (struct gl_debug_element *) node;
-
+   list_for_each_entry(struct gl_debug_element, elem, &ns->Elements, link) {
       if (elem->ID == id) {
          state = elem->State;
          break;