[lttngtop.git] / src / cputop.c

/*
 * Copyright (C) 2011 Julien Desfossez
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License Version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA.
 */

#include <babeltrace/babeltrace.h>

#include "lttngtoptypes.h"
#include "common.h"
#include "cputop.h"

void update_cputop_data(unsigned long timestamp, int64_t cpu, int prev_pid,
		int next_pid, char *prev_comm, char *next_comm)
{
	struct cputime *tmpcpu;
	unsigned long elapsed;

	tmpcpu = get_cpu(cpu);

	if (tmpcpu->current_task && tmpcpu->current_task->pid == prev_pid) {
		elapsed = timestamp - tmpcpu->task_start;
		tmpcpu->current_task->totalcpunsec += elapsed;
		tmpcpu->current_task->threadstotalcpunsec += elapsed;
		if (tmpcpu->current_task->pid != tmpcpu->current_task->tid)
			tmpcpu->current_task->threadparent->threadstotalcpunsec += elapsed;
	}

	if (next_pid != 0)
		tmpcpu->current_task = get_proc(&lttngtop, next_pid, next_comm, timestamp);
	else
		tmpcpu->current_task = NULL;

	tmpcpu->task_start = timestamp;
}

enum bt_cb_ret handle_sched_switch(struct bt_ctf_event *call_data,
		void *private_data)
{
	struct definition *scope;
	unsigned long timestamp;
	uint64_t cpu_id;
	char *prev_comm, *next_comm;
	int prev_tid, next_tid;

	timestamp = bt_ctf_get_timestamp(call_data);
	if (timestamp == -1ULL)
		goto error;

	scope = bt_ctf_get_top_level_scope(call_data,
			BT_EVENT_FIELDS);
	prev_comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data,
				scope, "_prev_comm"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing prev_comm context info\n");
		goto error;
	}

	next_comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data,
				scope, "_next_comm"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing next_comm context info\n");
		goto error;
	}

	prev_tid = bt_ctf_get_int64(bt_ctf_get_field(call_data,
				scope, "_prev_tid"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing prev_tid context info\n");
		goto error;
	}

	next_tid = bt_ctf_get_int64(bt_ctf_get_field(call_data,
				scope, "_next_tid"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing next_tid context info\n");
		goto error;
	}

	cpu_id = get_cpu_id(call_data);

	update_cputop_data(timestamp, cpu_id, prev_tid, next_tid,
			prev_comm, next_comm);

	return BT_CB_OK;

error:
	return BT_CB_ERROR_STOP;
}

enum bt_cb_ret handle_sched_process_free(struct bt_ctf_event *call_data,
		void *private_data)
{
	struct definition *scope;
	unsigned long timestamp;
	char *comm;
	int tid;

	timestamp = bt_ctf_get_timestamp(call_data);
	if (timestamp == -1ULL)
		goto error;

	scope = bt_ctf_get_top_level_scope(call_data,
			BT_EVENT_FIELDS);
	comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data,
				scope, "_comm"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing procname context info\n");
		goto error;
	}

	tid = bt_ctf_get_int64(bt_ctf_get_field(call_data,
				scope, "_tid"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing tid context info\n");
		goto error;
	}

	death_proc(&lttngtop, tid, comm, timestamp);

	return BT_CB_OK;

error:
	return BT_CB_ERROR_STOP;

}
Commit	Line	Data
1fc22eb4 JD	1	/*
	2	* Copyright (C) 2011 Julien Desfossez
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License Version 2 as
	6	* published by the Free Software Foundation;
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this program; if not, write to the Free Software
	15	* Foundation, Inc., 59 Temple Place - Suite 330, Boston,
	16	* MA 02111-1307, USA.
	17	*/
	18
	19	#include <babeltrace/babeltrace.h>
	20
	21	#include "lttngtoptypes.h"
	22	#include "common.h"
	23	#include "cputop.h"
	24
	25	void update_cputop_data(unsigned long timestamp, int64_t cpu, int prev_pid,
	26	int next_pid, char prev_comm, char next_comm)
	27	{
	28	struct cputime *tmpcpu;
	29	unsigned long elapsed;
	30
	31	tmpcpu = get_cpu(cpu);
	32
	33	if (tmpcpu->current_task && tmpcpu->current_task->pid == prev_pid) {
	34	elapsed = timestamp - tmpcpu->task_start;
	35	tmpcpu->current_task->totalcpunsec += elapsed;
	36	tmpcpu->current_task->threadstotalcpunsec += elapsed;
	37	if (tmpcpu->current_task->pid != tmpcpu->current_task->tid)
	38	tmpcpu->current_task->threadparent->threadstotalcpunsec += elapsed;
	39	}
	40
	41	if (next_pid != 0)
	42	tmpcpu->current_task = get_proc(&lttngtop, next_pid, next_comm, timestamp);
	43	else
	44	tmpcpu->current_task = NULL;
	45
	46	tmpcpu->task_start = timestamp;
	47	}
	48
	49	enum bt_cb_ret handle_sched_switch(struct bt_ctf_event *call_data,
	50	void *private_data)
	51	{
	52	struct definition *scope;
	53	unsigned long timestamp;
	54	uint64_t cpu_id;
	55	char prev_comm, next_comm;
	56	int prev_tid, next_tid;
	57
	58	timestamp = bt_ctf_get_timestamp(call_data);
	59	if (timestamp == -1ULL)
	60	goto error;
	61
	62	scope = bt_ctf_get_top_level_scope(call_data,
	63	BT_EVENT_FIELDS);
	64	prev_comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data,
65	scope, "_prev_comm"));
66	if (bt_ctf_field_get_error()) {
67	fprintf(stderr, "Missing prev_comm context info\n");
68	goto error;
69	}
70
71	next_comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data,
72	scope, "_next_comm"));
73	if (bt_ctf_field_get_error()) {
74	fprintf(stderr, "Missing next_comm context info\n");
75	goto error;
76	}
77
78	prev_tid = bt_ctf_get_int64(bt_ctf_get_field(call_data,
79	scope, "_prev_tid"));
80	if (bt_ctf_field_get_error()) {
81	fprintf(stderr, "Missing prev_tid context info\n");
82	goto error;
83	}
84
85	next_tid = bt_ctf_get_int64(bt_ctf_get_field(call_data,
86	scope, "_next_tid"));
87	if (bt_ctf_field_get_error()) {
88	fprintf(stderr, "Missing next_tid context info\n");
89	goto error;
90	}
91
d67167cd	92	cpu_id = get_cpu_id(call_data);
1fc22eb4 JD	93
	94	update_cputop_data(timestamp, cpu_id, prev_tid, next_tid,
	95	prev_comm, next_comm);
	96
	97	return BT_CB_OK;
	98
	99	error:
	100	return BT_CB_ERROR_STOP;
	101	}
	102
	103	enum bt_cb_ret handle_sched_process_free(struct bt_ctf_event *call_data,
	104	void *private_data)
	105	{
	106	struct definition *scope;
	107	unsigned long timestamp;
	108	char *comm;
	109	int tid;
	110
	111	timestamp = bt_ctf_get_timestamp(call_data);
	112	if (timestamp == -1ULL)
	113	goto error;
	114
	115	scope = bt_ctf_get_top_level_scope(call_data,
	116	BT_EVENT_FIELDS);
	117	comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data,
	118	scope, "_comm"));
	119	if (bt_ctf_field_get_error()) {
	120	fprintf(stderr, "Missing procname context info\n");
	121	goto error;
	122	}
	123
	124	tid = bt_ctf_get_int64(bt_ctf_get_field(call_data,
	125	scope, "_tid"));
	126	if (bt_ctf_field_get_error()) {
	127	fprintf(stderr, "Missing tid context info\n");
	128	goto error;
	129	}
	130
	131	death_proc(&lttngtop, tid, comm, timestamp);
	132
	133	return BT_CB_OK;
	134
	135	error:
	136	return BT_CB_ERROR_STOP;
	137
	138	}
	139