static const char *opt_input_path;
static const char *opt_output_path;
-static struct trace_collection trace_collection_read;
static struct format *fmt_read;
void strlower(char *str)
return ret;
}
-static void init_trace_collection(struct trace_collection *tc)
-{
- tc->array = g_ptr_array_sized_new(DEFAULT_FILE_ARRAY_SIZE);
- tc->clocks = g_hash_table_new(g_direct_hash, g_direct_equal);
- tc->single_clock_offset_avg = 0;
- tc->offset_first = 0;
- tc->delta_offset_first_sum = 0;
- tc->offset_nr = 0;
-}
-/*
- * finalize_trace_collection() closes the opened traces for read
- * and free the memory allocated for trace collection
- */
-static void finalize_trace_collection(struct trace_collection *tc)
-{
- int i;
-
- for (i = 0; i < tc->array->len; i++) {
- struct trace_descriptor *temp =
- g_ptr_array_index(tc->array, i);
- fmt_read->close_trace(temp);
- }
- g_ptr_array_free(tc->array, TRUE);
- g_hash_table_destroy(tc->clocks);
-}
-struct clock_match {
- GHashTable *clocks;
- struct ctf_clock *clock_match;
- struct trace_collection *tc;
-};
-static void check_clock_match(gpointer key, gpointer value, gpointer user_data)
-{
- struct clock_match *match = user_data;
- struct ctf_clock *clock_a = value, *clock_b;
-
- if (clock_a->uuid != 0) {
- /*
- * Lookup the the trace clocks into the collection
- * clocks.
- */
- clock_b = g_hash_table_lookup(match->clocks,
- (gpointer) (unsigned long) clock_a->uuid);
- if (clock_b) {
- match->clock_match = clock_b;
- return;
- }
- } else if (clock_a->absolute) {
- /*
- * Absolute time references, such as NTP, are looked up
- * by clock name.
- */
- clock_b = g_hash_table_lookup(match->clocks,
- (gpointer) (unsigned long) clock_a->name);
- if (clock_b) {
- match->clock_match = clock_b;
- return;
- }
- }
-}
-
-static void clock_add(gpointer key, gpointer value, gpointer user_data)
-{
- struct clock_match *clock_match = user_data;
- GHashTable *tc_clocks = clock_match->clocks;
- struct ctf_clock *t_clock = value;
- GQuark v;
-
- if (t_clock->absolute)
- v = t_clock->name;
- else
- v = t_clock->uuid;
- if (v) {
- struct ctf_clock *tc_clock;
-
- tc_clock = g_hash_table_lookup(tc_clocks,
- (gpointer) (unsigned long) v);
- if (!tc_clock) {
- /*
- * For now, we only support CTF that has one
- * single clock uuid or name (absolute ref).
- */
- if (g_hash_table_size(tc_clocks) > 0) {
- fprintf(stderr, "[error] Only CTF traces with a single clock description are supported by this babeltrace version.\n");
- }
- if (!clock_match->tc->offset_nr) {
- clock_match->tc->offset_first =
- (t_clock->offset_s * 1000000000ULL) + t_clock->offset;
- clock_match->tc->delta_offset_first_sum = 0;
- clock_match->tc->offset_nr++;
- clock_match->tc->single_clock_offset_avg =
- clock_match->tc->offset_first;
- }
- g_hash_table_insert(tc_clocks,
- (gpointer) (unsigned long) v,
- value);
- } else {
- int64_t diff_ns;
-
- /*
- * Check that the offsets match. If not, warn
- * the user that we do an arbitrary choice.
- */
- diff_ns = tc_clock->offset_s;
- diff_ns -= t_clock->offset_s;
- diff_ns *= 1000000000ULL;
- diff_ns += tc_clock->offset;
- diff_ns -= t_clock->offset;
- printf_debug("Clock \"%s\" offset between traces has a delta of %" PRIu64 " ns.",
- g_quark_to_string(tc_clock->name),
- diff_ns < 0 ? -diff_ns : diff_ns);
- if (diff_ns > 10000) {
- fprintf(stderr, "[warning] Clock \"%s\" offset differs between traces (delta %" PRIu64 " ns). Using average.\n",
- g_quark_to_string(tc_clock->name),
- diff_ns < 0 ? -diff_ns : diff_ns);
- }
- /* Compute average */
- clock_match->tc->delta_offset_first_sum +=
- (t_clock->offset_s * 1000000000ULL) + t_clock->offset
- - clock_match->tc->offset_first;
- clock_match->tc->offset_nr++;
- clock_match->tc->single_clock_offset_avg =
- clock_match->tc->offset_first
- + (clock_match->tc->delta_offset_first_sum / clock_match->tc->offset_nr);
- }
- }
-}
-
-/*
- * Whenever we add a trace to the trace collection, check that we can
- * correlate this trace with at least one other clock in the trace.
- */
-static int trace_collection_add(struct trace_collection *tc,
- struct trace_descriptor *td)
-{
- struct ctf_trace *trace = container_of(td, struct ctf_trace, parent);
-
- g_ptr_array_add(tc->array, td);
- trace->collection = tc;
-
- if (tc->array->len > 1) {
- struct clock_match clock_match = {
- .clocks = tc->clocks,
- .clock_match = NULL,
- .tc = NULL,
- };
-
- /*
- * With two or more traces, we need correlation info
- * avalable.
- */
- g_hash_table_foreach(trace->clocks,
- check_clock_match,
- &clock_match);
- if (!clock_match.clock_match) {
- fprintf(stderr, "[error] No clocks can be correlated and multiple traces are added to the collection.\n");
- goto error;
- }
- }
-
- {
- struct clock_match clock_match = {
- .clocks = tc->clocks,
- .clock_match = NULL,
- .tc = tc,
- };
-
- /*
- * Add each clock from the trace clocks into the trace
- * collection clocks.
- */
- g_hash_table_foreach(trace->clocks,
- clock_add,
- &clock_match);
- }
- return 0;
-error:
- return -EPERM;
-}
int convert_trace(struct trace_descriptor *td_write,
struct bt_context *ctx)
return ret;
}
-
-/*
- * traverse_dir() is the callback functiion for File Tree Walk (nftw).
- * it receives the path of the current entry (file, dir, link..etc) with
- * a flag to indicate the type of the entry.
- * if the entry being visited is a directory and contains a metadata file,
- * then open it for reading and save a trace_descriptor to that directory
- * in the read trace collection.
- */
-static int traverse_dir(const char *fpath, const struct stat *sb,
- int tflag, struct FTW *ftwbuf)
-{
- int dirfd;
- int fd;
- struct trace_descriptor *td_read;
- int ret;
-
- if (tflag != FTW_D)
- return 0;
- dirfd = open(fpath, 0);
- if (dirfd < 0) {
- fprintf(stderr, "[error] unable to open trace "
- "directory file descriptor.\n");
- return -1;
- }
- fd = openat(dirfd, "metadata", O_RDONLY);
- if (fd < 0) {
- close(dirfd);
- } else {
- close(fd);
- close(dirfd);
- td_read = fmt_read->open_trace(fpath, O_RDONLY,
- ctf_move_pos_slow, NULL);
- if (!td_read) {
- fprintf(stderr, "Error opening trace \"%s\" "
- "for reading.\n\n", fpath);
- return -1; /* error */
- }
- ret = trace_collection_add(&trace_collection_read, td_read);
- if (ret) {
- return -1;
- }
- }
- return 0; /* success */
-}
-
int main(int argc, char **argv)
{
int ret;
exit(EXIT_FAILURE);
}
- /*
- * pass the input path to nftw() .
- * specify traverse_dir() as the callback function.
- * depth = 10 which is the max number of file descriptors
- * that nftw() can open at a given time.
- * flags = 0 check nftw documentation for more info .
- */
- init_trace_collection(&trace_collection_read);
- ret = nftw(opt_input_path, traverse_dir, 10, 0);
- if (ret != 0) {
+ ctx = bt_context_create();
+
+ ret = bt_context_add_traces(ctx, opt_input_path,
+ opt_input_format);
+ if (ret) {
fprintf(stderr, "[error] opening trace \"%s\" for reading.\n\n",
opt_input_path);
goto error_td_read;
}
- if (trace_collection_read.array->len == 0) {
- fprintf(stderr, "[warning] no metadata file was found."
- " no output was generated\n");
- return 0;
- }
- ctx = bt_context_create(&trace_collection_read);
- if (!ctx) {
- fprintf(stderr, "Error allocating a new context\n");
- goto error_td_read;
- }
+
td_write = fmt_write->open_trace(opt_output_path, O_RDWR, NULL, NULL);
if (!td_write) {
fprintf(stderr, "Error opening trace \"%s\" for writing.\n\n",
}
fmt_write->close_trace(td_write);
- finalize_trace_collection(&trace_collection_read);
- bt_context_destroy(ctx);
+
+ bt_context_put(ctx);
printf_verbose("finished converting. Output written to:\n%s\n",
opt_output_path ? : "<stdout>");
exit(EXIT_SUCCESS);
error_copy_trace:
fmt_write->close_trace(td_write);
error_td_write:
- finalize_trace_collection(&trace_collection_read);
+ bt_context_put(ctx);
error_td_read:
exit(EXIT_FAILURE);
}
projects / babeltrace.git / blobdiff