tracepoints: export pointer array

[ust.git] / libust / tracepoint.c

diff --git a/libust/tracepoint.c b/libust/tracepoint.c
index dbaca6fcee0f65086a2a54217ebc6a680271bed3..ca40902494f61b9785a1e0b863852dca4694aff3 100644 (file)
--- a/libust/tracepoint.c
+++ b/libust/tracepoint.c
@@ -27,6 +27,7 @@
 
 #define _LGPL_SOURCE
 #include <urcu-bp.h>
+#include <urcu/hlist.h>
 
 //extern struct tracepoint __start___tracepoints[] __attribute__((visibility("hidden")));
 //extern struct tracepoint __stop___tracepoints[] __attribute__((visibility("hidden")));
@@ -49,7 +50,7 @@ static DEFINE_MUTEX(tracepoints_mutex);
  */
 #define TRACEPOINT_HASH_BITS 6
 #define TRACEPOINT_TABLE_SIZE (1 << TRACEPOINT_HASH_BITS)
-static struct hlist_head tracepoint_table[TRACEPOINT_TABLE_SIZE];
+static struct cds_hlist_head tracepoint_table[TRACEPOINT_TABLE_SIZE];
 
 /*
  * Note about RCU :
@@ -58,7 +59,7 @@ static struct hlist_head tracepoint_table[TRACEPOINT_TABLE_SIZE];
  * Tracepoint entries modifications are protected by the tracepoints_mutex.
  */
 struct tracepoint_entry {
-       struct hlist_node hlist;
+       struct cds_hlist_node hlist;
        struct probe *probes;
        int refcount;   /* Number of times armed. 0 if disarmed. */
        char name[0];
@@ -192,13 +193,13 @@ tracepoint_entry_remove_probe(struct tracepoint_entry *entry, void *probe,
  */
 static struct tracepoint_entry *get_tracepoint(const char *name)
 {
-       struct hlist_head *head;
-       struct hlist_node *node;
+       struct cds_hlist_head *head;
+       struct cds_hlist_node *node;
        struct tracepoint_entry *e;
        u32 hash = jhash(name, strlen(name), 0);
 
        head = &tracepoint_table[hash & (TRACEPOINT_TABLE_SIZE - 1)];
-       hlist_for_each_entry(e, node, head, hlist) {
+       cds_hlist_for_each_entry(e, node, head, hlist) {
                if (!strcmp(name, e->name))
                        return e;
        }
@@ -211,14 +212,14 @@ static struct tracepoint_entry *get_tracepoint(const char *name)
  */
 static struct tracepoint_entry *add_tracepoint(const char *name)
 {
-       struct hlist_head *head;
-       struct hlist_node *node;
+       struct cds_hlist_head *head;
+       struct cds_hlist_node *node;
        struct tracepoint_entry *e;
        size_t name_len = strlen(name) + 1;
        u32 hash = jhash(name, name_len-1, 0);
 
        head = &tracepoint_table[hash & (TRACEPOINT_TABLE_SIZE - 1)];
-       hlist_for_each_entry(e, node, head, hlist) {
+       cds_hlist_for_each_entry(e, node, head, hlist) {
                if (!strcmp(name, e->name)) {
                        DBG("tracepoint %s busy", name);
                        return ERR_PTR(-EEXIST);        /* Already there */
@@ -234,7 +235,7 @@ static struct tracepoint_entry *add_tracepoint(const char *name)
        memcpy(&e->name[0], name, name_len);
        e->probes = NULL;
        e->refcount = 0;
-       hlist_add_head(&e->hlist, head);
+       cds_hlist_add_head(&e->hlist, head);
        return e;
 }
 
@@ -244,7 +245,7 @@ static struct tracepoint_entry *add_tracepoint(const char *name)
  */
 static inline void remove_tracepoint(struct tracepoint_entry *e)
 {
-       hlist_del(&e->hlist);
+       cds_hlist_del(&e->hlist);
        free(e);
 }
 
@@ -286,24 +287,24 @@ static void disable_tracepoint(struct tracepoint *elem)
  *
  * Updates the probe callback corresponding to a range of tracepoints.
  */
-void tracepoint_update_probe_range(struct tracepoint *begin,
-                                  struct tracepoint *end)
+void tracepoint_update_probe_range(struct tracepoint * const *begin,
+                                  struct tracepoint * const *end)
 {
-       struct tracepoint *iter;
+       struct tracepoint * const *iter;
        struct tracepoint_entry *mark_entry;
 
        pthread_mutex_lock(&tracepoints_mutex);
        for (iter = begin; iter < end; iter++) {
-               if (!iter->name) {
-                       disable_tracepoint(iter);
+               if (!(*iter)->name) {
+                       disable_tracepoint(*iter);
                        continue;
                }
-               mark_entry = get_tracepoint(iter->name);
+               mark_entry = get_tracepoint((*iter)->name);
                if (mark_entry) {
-                       set_tracepoint(&mark_entry, iter,
+                       set_tracepoint(&mark_entry, *iter,
                                        !!mark_entry->refcount);
                } else {
-                       disable_tracepoint(iter);
+                       disable_tracepoint(*iter);
                }
        }
        pthread_mutex_unlock(&tracepoints_mutex);
@@ -546,8 +547,8 @@ int lib_get_iter_tracepoints(struct tracepoint_iter *iter)
  * Will return the first tracepoint in the range if the input tracepoint is
  * NULL.
  */
-int tracepoint_get_iter_range(struct tracepoint **tracepoint,
-       struct tracepoint *begin, struct tracepoint *end)
+int tracepoint_get_iter_range(struct tracepoint * const **tracepoint,
+       struct tracepoint * const *begin, struct tracepoint * const *end)
 {
        if (!*tracepoint && begin != end) {
                *tracepoint = begin;
@@ -647,17 +648,17 @@ void tracepoint_set_new_tracepoint_cb(void (*cb)(struct tracepoint *))
        new_tracepoint_cb = cb;
 }
 
-static void new_tracepoints(struct tracepoint *start, struct tracepoint *end)
+static void new_tracepoints(struct tracepoint * const *start, struct tracepoint * const *end)
 {
-       if(new_tracepoint_cb) {
-               struct tracepoint *t;
+       if (new_tracepoint_cb) {
+               struct tracepoint * const *t;
                for(t=start; t < end; t++) {
-                       new_tracepoint_cb(t);
+                       new_tracepoint_cb(*t);
                }
        }
 }
 
-int tracepoint_register_lib(struct tracepoint *tracepoints_start, int tracepoints_count)
+int tracepoint_register_lib(struct tracepoint * const *tracepoints_start, int tracepoints_count)
 {
        struct tracepoint_lib *pl;
 
@@ -681,14 +682,14 @@ int tracepoint_register_lib(struct tracepoint *tracepoints_start, int tracepoint
        return 0;
 }
 
-int tracepoint_unregister_lib(struct tracepoint *tracepoints_start)
+int tracepoint_unregister_lib(struct tracepoint * const *tracepoints_start)
 {
        struct tracepoint_lib *lib;
 
        pthread_mutex_lock(&tracepoints_mutex);
 
        cds_list_for_each_entry(lib, &libs, list) {
-               if(lib->tracepoints_start == tracepoints_start) {
+               if (lib->tracepoints_start == tracepoints_start) {
                        struct tracepoint_lib *lib2free = lib;
                        cds_list_del(&lib->list);
                        free(lib2free);