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Tst pthread #1067

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efc84f4
Add "extra info" field to the records
roblatham00 Dec 14, 2016
6a31342
bug fix for read traces
Mar 28, 2024
65b6dbe
remove unnecessary DXT printing code
Mar 28, 2024
3c3617e
support for annotating DXT segment with pthread_id
Mar 29, 2024
48273e5
add pydarshan support for extra_info
Feb 17, 2025
ff8e177
Revert "Add "extra info" field to the records"
wkliao Aug 17, 2025
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22 changes: 22 additions & 0 deletions darshan-runtime/lib/darshan-dxt.c
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Original file line number Diff line number Diff line change
Expand Up @@ -108,6 +108,7 @@ static struct dxt_file_record_ref *dxt_posix_track_new_file_record(
darshan_record_id rec_id);
static struct dxt_file_record_ref *dxt_mpiio_track_new_file_record(
darshan_record_id rec_id);
void annotate_trace_segment(char *extra_info_str);

/* DXT output/cleanup routines for darshan-core */
static void dxt_posix_output(
Expand Down Expand Up @@ -262,6 +263,7 @@ void dxt_posix_write(darshan_record_id rec_id, int64_t offset,
rec_ref->write_traces[file_rec->write_count].length = length;
rec_ref->write_traces[file_rec->write_count].start_time = start_time;
rec_ref->write_traces[file_rec->write_count].end_time = end_time;
annotate_trace_segment(rec_ref->write_traces[file_rec->write_count].extra_info);
file_rec->write_count += 1;

DXT_UNLOCK();
Expand Down Expand Up @@ -307,6 +309,7 @@ void dxt_posix_read(darshan_record_id rec_id, int64_t offset,
rec_ref->read_traces[file_rec->read_count].length = length;
rec_ref->read_traces[file_rec->read_count].start_time = start_time;
rec_ref->read_traces[file_rec->read_count].end_time = end_time;
annotate_trace_segment(rec_ref->read_traces[file_rec->read_count].extra_info);
file_rec->read_count += 1;

DXT_UNLOCK();
Expand Down Expand Up @@ -352,6 +355,7 @@ void dxt_mpiio_write(darshan_record_id rec_id, int64_t offset,
rec_ref->write_traces[file_rec->write_count].offset = offset;
rec_ref->write_traces[file_rec->write_count].start_time = start_time;
rec_ref->write_traces[file_rec->write_count].end_time = end_time;
annotate_trace_segment(rec_ref->write_traces[file_rec->write_count].extra_info);
file_rec->write_count += 1;

DXT_UNLOCK();
Expand Down Expand Up @@ -397,6 +401,7 @@ void dxt_mpiio_read(darshan_record_id rec_id, int64_t offset,
rec_ref->read_traces[file_rec->read_count].offset = offset;
rec_ref->read_traces[file_rec->read_count].start_time = start_time;
rec_ref->read_traces[file_rec->read_count].end_time = end_time;
annotate_trace_segment(rec_ref->read_traces[file_rec->read_count].extra_info);
file_rec->read_count += 1;

DXT_UNLOCK();
Expand Down Expand Up @@ -760,6 +765,23 @@ static struct dxt_file_record_ref *dxt_mpiio_track_new_file_record(
return(rec_ref);
}

void annotate_trace_segment(char *extra_info_str)
{
char *extra_info_env = getenv("DARSHAN_DXT_EXTRA_INFO");
if (extra_info_env != NULL) {
strncpy(extra_info_str, extra_info_env, EXTRA_INFO_LEN-1);
} else {
extra_info_str[0] = '\0';
}
unsigned long pthread_id = (unsigned long)pthread_self();
if(strlen(extra_info_str))
strcat(extra_info_str, " ");
snprintf(extra_info_str + strlen(extra_info_str), EXTRA_INFO_LEN-1-strlen(extra_info_str),
"pthread_id=%lu", pthread_id);

return;
}

static void dxt_free_record_data(void *rec_ref_p, void *user_ptr)
{
struct dxt_file_record_ref *dxt_rec_ref = (struct dxt_file_record_ref *)rec_ref_p;
Expand Down
1 change: 1 addition & 0 deletions darshan-util/pydarshan/darshan/backend/api_def_c.py
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Original file line number Diff line number Diff line change
Expand Up @@ -205,6 +205,7 @@
int64_t length;
double start_time;
double end_time;
char extra_info[64];
} segment_info;

/* counter names */
Expand Down
6 changes: 4 additions & 2 deletions darshan-util/pydarshan/darshan/backend/cffi_backend.py
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Original file line number Diff line number Diff line change
Expand Up @@ -626,7 +626,8 @@ def log_get_dxt_record(log, mod_name, reads=True, writes=True, dtype='dict'):
"offset": segments[i].offset,
"length": segments[i].length,
"start_time": segments[i].start_time,
"end_time": segments[i].end_time
"end_time": segments[i].end_time,
"extra_info": ffi.string(segments[i].extra_info).decode("utf-8")
}
rec['write_segments'].append(seg)

Expand All @@ -637,7 +638,8 @@ def log_get_dxt_record(log, mod_name, reads=True, writes=True, dtype='dict'):
"offset": segments[i].offset,
"length": segments[i].length,
"start_time": segments[i].start_time,
"end_time": segments[i].end_time
"end_time": segments[i].end_time,
"extra_info": ffi.string(segments[i].extra_info).decode("utf-8")
}
rec['read_segments'].append(seg)

Expand Down
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