Remove app context backward compatibility dead code

[lttng-ust.git] / liblttng-ust / tracepoint.c

diff --git a/liblttng-ust/tracepoint.c b/liblttng-ust/tracepoint.c
index adb3f015c3627766e142d35a1917f426a8560b6d..00fcc740101b5f443d77fba5b8596f3053643302 100644 (file)
--- a/liblttng-ust/tracepoint.c
+++ b/liblttng-ust/tracepoint.c
@@ -21,7 +21,7 @@
 #include <urcu/system.h>
 
 #include <lttng/tracepoint.h>
-#include <lttng/ust-abi.h>     /* for LTTNG_UST_SYM_NAME_LEN */
+#include <lttng/ust-abi.h>     /* for LTTNG_UST_ABI_SYM_NAME_LEN */
 
 #include <usterr-signal-safe.h>
 #include <ust-helper.h>
@@ -256,14 +256,14 @@ static struct tracepoint_entry *get_tracepoint(const char *name)
        size_t name_len = strlen(name);
        uint32_t hash;
 
-       if (name_len > LTTNG_UST_SYM_NAME_LEN - 1) {
-               WARN("Truncating tracepoint name %s which exceeds size limits of %u chars", name, LTTNG_UST_SYM_NAME_LEN - 1);
-               name_len = LTTNG_UST_SYM_NAME_LEN - 1;
+       if (name_len > LTTNG_UST_ABI_SYM_NAME_LEN - 1) {
+               WARN("Truncating tracepoint name %s which exceeds size limits of %u chars", name, LTTNG_UST_ABI_SYM_NAME_LEN - 1);
+               name_len = LTTNG_UST_ABI_SYM_NAME_LEN - 1;
        }
        hash = jhash(name, name_len, 0);
        head = &tracepoint_table[hash & (TRACEPOINT_TABLE_SIZE - 1)];
        cds_hlist_for_each_entry(e, node, head, hlist) {
-               if (!strncmp(name, e->name, LTTNG_UST_SYM_NAME_LEN - 1))
+               if (!strncmp(name, e->name, LTTNG_UST_ABI_SYM_NAME_LEN - 1))
                        return e;
        }
        return NULL;
@@ -284,14 +284,14 @@ static struct tracepoint_entry *add_tracepoint(const char *name,
        size_t sig_off, name_off;
        uint32_t hash;
 
-       if (name_len > LTTNG_UST_SYM_NAME_LEN - 1) {
-               WARN("Truncating tracepoint name %s which exceeds size limits of %u chars", name, LTTNG_UST_SYM_NAME_LEN - 1);
-               name_len = LTTNG_UST_SYM_NAME_LEN - 1;
+       if (name_len > LTTNG_UST_ABI_SYM_NAME_LEN - 1) {
+               WARN("Truncating tracepoint name %s which exceeds size limits of %u chars", name, LTTNG_UST_ABI_SYM_NAME_LEN - 1);
+               name_len = LTTNG_UST_ABI_SYM_NAME_LEN - 1;
        }
        hash = jhash(name, name_len, 0);
        head = &tracepoint_table[hash & (TRACEPOINT_TABLE_SIZE - 1)];
        cds_hlist_for_each_entry(e, node, head, hlist) {
-               if (!strncmp(name, e->name, LTTNG_UST_SYM_NAME_LEN - 1)) {
+               if (!strncmp(name, e->name, LTTNG_UST_ABI_SYM_NAME_LEN - 1)) {
                        DBG("tracepoint %s busy", name);
                        return ERR_PTR(-EEXIST);        /* Already there */
                }
@@ -339,7 +339,7 @@ static void remove_tracepoint(struct tracepoint_entry *e)
 static void set_tracepoint(struct tracepoint_entry **entry,
        struct lttng_ust_tracepoint *elem, int active)
 {
-       WARN_ON(strncmp((*entry)->name, elem->name, LTTNG_UST_SYM_NAME_LEN - 1) != 0);
+       WARN_ON(strncmp((*entry)->name, elem->name, LTTNG_UST_ABI_SYM_NAME_LEN - 1) != 0);
        /*
         * Check that signatures match before connecting a probe to a
         * tracepoint. Warn the user if they don't.
@@ -394,9 +394,9 @@ static void add_callsite(struct tracepoint_lib * lib, struct lttng_ust_tracepoin
        uint32_t hash;
        struct tracepoint_entry *tp_entry;
 
-       if (name_len > LTTNG_UST_SYM_NAME_LEN - 1) {
-               WARN("Truncating tracepoint name %s which exceeds size limits of %u chars", name, LTTNG_UST_SYM_NAME_LEN - 1);
-               name_len = LTTNG_UST_SYM_NAME_LEN - 1;
+       if (name_len > LTTNG_UST_ABI_SYM_NAME_LEN - 1) {
+               WARN("Truncating tracepoint name %s which exceeds size limits of %u chars", name, LTTNG_UST_ABI_SYM_NAME_LEN - 1);
+               name_len = LTTNG_UST_ABI_SYM_NAME_LEN - 1;
        }
        hash = jhash(name, name_len, 0);
        head = &callsite_table[hash & (CALLSITE_TABLE_SIZE - 1)];
@@ -451,16 +451,16 @@ static void tracepoint_sync_callsites(const char *name)
        struct tracepoint_entry *tp_entry;
 
        tp_entry = get_tracepoint(name);
-       if (name_len > LTTNG_UST_SYM_NAME_LEN - 1) {
-               WARN("Truncating tracepoint name %s which exceeds size limits of %u chars", name, LTTNG_UST_SYM_NAME_LEN - 1);
-               name_len = LTTNG_UST_SYM_NAME_LEN - 1;
+       if (name_len > LTTNG_UST_ABI_SYM_NAME_LEN - 1) {
+               WARN("Truncating tracepoint name %s which exceeds size limits of %u chars", name, LTTNG_UST_ABI_SYM_NAME_LEN - 1);
+               name_len = LTTNG_UST_ABI_SYM_NAME_LEN - 1;
        }
        hash = jhash(name, name_len, 0);
        head = &callsite_table[hash & (CALLSITE_TABLE_SIZE - 1)];
        cds_hlist_for_each_entry(e, node, head, hlist) {
                struct lttng_ust_tracepoint *tp = e->tp;
 
-               if (strncmp(name, tp->name, LTTNG_UST_SYM_NAME_LEN - 1))
+               if (strncmp(name, tp->name, LTTNG_UST_ABI_SYM_NAME_LEN - 1))
                        continue;
                if (tp_entry) {
                        if (!e->tp_entry_callsite_ref) {
@@ -619,10 +619,10 @@ end:
 
 /*
  * Caller needs to invoke __tracepoint_probe_release_queue() after
- * calling __tracepoint_probe_register_queue_release() one or multiple
+ * calling lttng_ust_tp_probe_register_queue_release() one or multiple
  * times to ensure it does not leak memory.
  */
-int __tracepoint_probe_register_queue_release(const char *name,
+int lttng_ust_tp_probe_register_queue_release(const char *name,
                void (*probe)(void), void *data, const char *signature)
 {
        void *old;
@@ -690,10 +690,10 @@ end:
 
 /*
  * Caller needs to invoke __tracepoint_probe_release_queue() after
- * calling __tracepoint_probe_unregister_queue_release() one or multiple
+ * calling lttng_ust_tp_probe_unregister_queue_release() one or multiple
  * times to ensure it does not leak memory.
  */
-int __tracepoint_probe_unregister_queue_release(const char *name,
+int lttng_ust_tp_probe_unregister_queue_release(const char *name,
                void (*probe)(void), void *data)
 {
        void *old;
@@ -714,7 +714,7 @@ end:
        return ret;
 }
 
-void __tracepoint_probe_prune_release_queue(void)
+void lttng_ust_tp_probe_prune_release_queue(void)
 {
        CDS_LIST_HEAD(release_probes);
        struct tp_probes *pos, *next;
@@ -829,11 +829,6 @@ end:
        pthread_mutex_unlock(&tracepoint_mutex);
 }
 
-void tracepoint_set_new_tracepoint_cb(void (*cb)(struct lttng_ust_tracepoint *))
-{
-       new_tracepoint_cb = cb;
-}
-
 static void new_tracepoints(struct lttng_ust_tracepoint * const *start,
                            struct lttng_ust_tracepoint * const *end)
 {
@@ -859,6 +854,8 @@ static void new_tracepoints(struct lttng_ust_tracepoint * const *start,
  * against recent liblttng-ust headers require a recent liblttng-ust
  * runtime for those tracepoints to be taken into account.
  */
+int tracepoint_register_lib(struct lttng_ust_tracepoint * const *tracepoints_start,
+                            int tracepoints_count);
 int tracepoint_register_lib(struct lttng_ust_tracepoint * const *tracepoints_start,
                             int tracepoints_count)
 {
@@ -908,6 +905,7 @@ lib_added:
        return 0;
 }
 
+int tracepoint_unregister_lib(struct lttng_ust_tracepoint * const *tracepoints_start);
 int tracepoint_unregister_lib(struct lttng_ust_tracepoint * const *tracepoints_start)
 {
        struct tracepoint_lib *lib;
@@ -976,16 +974,19 @@ void lttng_ust_tp_exit(void)
 #undef tp_rcu_read_unlock
 #undef tp_rcu_dereference
 
+void tp_rcu_read_lock(void);
 void tp_rcu_read_lock(void)
 {
        lttng_ust_urcu_read_lock();
 }
 
+void tp_rcu_read_unlock(void);
 void tp_rcu_read_unlock(void)
 {
        lttng_ust_urcu_read_unlock();
 }
 
+void *tp_rcu_dereference_sym(void *p);
 void *tp_rcu_dereference_sym(void *p)
 {
        return lttng_ust_rcu_dereference(p);
@@ -1002,6 +1003,7 @@ void *tp_rcu_dereference_sym(void *p)
  * dlopen(3) and dlsym(3) to get an handle on the
  * tp_disable_destructors and tp_get_destructors_state symbols below.
  */
+void tp_disable_destructors(void);
 void tp_disable_destructors(void)
 {
        uatomic_set(&tracepoint_destructors_state, 0);
@@ -1011,6 +1013,7 @@ void tp_disable_destructors(void)
  * Returns 1 if the destructors are enabled and should be executed.
  * Returns 0 if the destructors are disabled.
  */
+int tp_get_destructors_state(void);
 int tp_get_destructors_state(void)
 {
        return uatomic_read(&tracepoint_destructors_state);