eal/windows: add missing SPDX license tag

[dpdk.git] / lib / librte_eal / common / eal_common_trace_ctf.c

diff --git a/lib/librte_eal/common/eal_common_trace_ctf.c b/lib/librte_eal/common/eal_common_trace_ctf.c
index 5ad44cc..33e419a 100644 (file)
--- a/lib/librte_eal/common/eal_common_trace_ctf.c
+++ b/lib/librte_eal/common/eal_common_trace_ctf.c
@@ -37,11 +37,12 @@ meta_copy(char **meta, int *offset, char *str, int rc)
        if (rc < 0)
                return rc;
 
-       ptr = realloc(ptr, count + rc);
+       ptr = realloc(ptr, count + rc + 1);
        if (ptr == NULL)
                goto free_str;
 
        memcpy(RTE_PTR_ADD(ptr, count), str, rc);
+       ptr[count + rc] = '\0';
        count += rc;
        free(str);
 
@@ -83,6 +84,11 @@ meta_data_type_emit(char **meta, int *offset)
                "typealias integer {size = 32; base = x;} := long;\n"
 #endif
                "typealias integer {size = 8; signed = false; encoding = ASCII; } := string_bounded_t;\n\n"
+#ifdef RTE_ARCH_64
+               "typealias integer {size = 64; base = x;} := size_t;\n"
+#else
+               "typealias integer {size = 32; base = x;} := size_t;\n"
+#endif
                "typealias floating_point {\n"
                "    exp_dig = 8;\n"
                "    mant_dig = 24;\n"
@@ -226,9 +232,10 @@ meta_event_emit(char **meta, int *offset, struct trace_point *tp)
                "    id = %d;\n"
                "    name = \"%s\";\n"
                "    fields := struct {\n"
-               "        %s\n"
+               "%s"
                "    };\n"
-               "};\n\n", trace_id_get(tp->handle), tp->name, tp->ctf_field);
+               "};\n\n", trace_id_get(tp->handle), tp->name,
+               tp->ctf_field != NULL ? tp->ctf_field : "");
        return meta_copy(meta, offset, str, rc);
 }
 
@@ -300,3 +307,110 @@ trace_metadata_destroy(void)
        }
 }
 
+static void
+meta_fix_freq(struct trace *trace, char *meta)
+{
+       char *str;
+       int rc;
+
+       str = RTE_PTR_ADD(meta, trace->ctf_meta_offset_freq);
+       rc = sprintf(str, "%20"PRIu64"", rte_get_timer_hz());
+       str[rc] = ';';
+}
+
+static void
+meta_fix_freq_offset(struct trace *trace, char *meta)
+{
+       uint64_t uptime_tickes_floor, uptime_ticks, freq, uptime_sec;
+       uint64_t offset, offset_s;
+       char *str;
+       int rc;
+
+       uptime_ticks = trace->uptime_ticks &
+                       ((1ULL << __RTE_TRACE_EVENT_HEADER_ID_SHIFT) - 1);
+       freq = rte_get_tsc_hz();
+       uptime_tickes_floor = RTE_ALIGN_MUL_FLOOR(uptime_ticks, freq);
+
+       uptime_sec = uptime_tickes_floor / freq;
+       offset_s = trace->epoch_sec - uptime_sec;
+
+       offset = uptime_ticks - uptime_tickes_floor;
+       offset += trace->epoch_nsec * (freq / NSEC_PER_SEC);
+
+       str = RTE_PTR_ADD(meta, trace->ctf_meta_offset_freq_off_s);
+       rc = sprintf(str, "%20"PRIu64"", offset_s);
+       str[rc] = ';';
+       str = RTE_PTR_ADD(meta, trace->ctf_meta_offset_freq_off);
+       rc = sprintf(str, "%20"PRIu64"", offset);
+       str[rc] = ';';
+}
+
+static void
+meta_fixup(struct trace *trace, char *meta)
+{
+       meta_fix_freq(trace, meta);
+       meta_fix_freq_offset(trace, meta);
+}
+
+int
+rte_trace_metadata_dump(FILE *f)
+{
+       struct trace *trace = trace_obj_get();
+       char *ctf_meta = trace->ctf_meta;
+       int rc;
+
+       if (!rte_trace_is_enabled())
+               return 0;
+
+       if (ctf_meta == NULL)
+               return -EINVAL;
+
+       if (!__atomic_load_n(&trace->ctf_fixup_done, __ATOMIC_SEQ_CST) &&
+                               rte_get_timer_hz()) {
+               meta_fixup(trace, ctf_meta);
+               __atomic_store_n(&trace->ctf_fixup_done, 1, __ATOMIC_SEQ_CST);
+       }
+
+       rc = fprintf(f, "%s", ctf_meta);
+       return rc < 0 ? rc : 0;
+}
+
+char *trace_metadata_fixup_field(const char *field)
+{
+       const char *ctf_reserved_words[] = {
+               "align",
+               "event",
+       };
+       unsigned int i;
+       char *out;
+       char *p;
+
+       /* reserved keywords */
+       for (i = 0; i < RTE_DIM(ctf_reserved_words); i++) {
+               if (strcmp(field, ctf_reserved_words[i]) != 0)
+                       continue;
+               if (asprintf(&out, "_%s", ctf_reserved_words[i]) == -1)
+                       out = NULL;
+               return out;
+       }
+
+       /* nothing to replace, return early */
+       if (strstr(field, ".") == NULL && strstr(field, "->") == NULL)
+               return NULL;
+
+       out = strdup(field);
+       if (out == NULL)
+               return NULL;
+       p = out;
+       while ((p = strstr(p, ".")) != NULL) {
+               p[0] = '_';
+               p++;
+       }
+       p = out;
+       while ((p = strstr(p, "->")) != NULL) {
+               p[0] = '_';
+               p++;
+               memmove(p, p + 1, strlen(p));
+       }
+       return out;
+}