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/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* The blow logging funcitons must only be called from the audio thread.
*/
#ifndef AUDIO_THREAD_LOG_H_
#define AUDIO_THREAD_LOG_H_
#include <sys/mman.h>
#include <pthread.h>
#include <stdint.h>
#include <syslog.h>
#include "cras_types.h"
#include "cras_shm.h"
#define AUDIO_THREAD_LOGGING 1
#if (AUDIO_THREAD_LOGGING)
#define ATLOG(log, event, data1, data2, data3) \
audio_thread_event_log_data(log, event, data1, data2, data3);
#else
#define ATLOG(log, event, data1, data2, data3)
#endif
extern struct audio_thread_event_log *atlog;
extern int atlog_rw_shm_fd;
extern int atlog_ro_shm_fd;
static inline struct audio_thread_event_log *
audio_thread_event_log_init(char *name)
{
struct audio_thread_event_log *log;
atlog_ro_shm_fd = -1;
atlog_rw_shm_fd = -1;
log = (struct audio_thread_event_log *)cras_shm_setup(
name, sizeof(*log), &atlog_rw_shm_fd, &atlog_ro_shm_fd);
/* Fallback to calloc if device shared memory resource is empty and
* cras_shm_setup fails.
*/
if (log == NULL) {
syslog(LOG_ERR, "Failed to create atlog by cras_shm_setup");
log = (struct audio_thread_event_log *)calloc(
1, sizeof(struct audio_thread_event_log));
}
log->len = AUDIO_THREAD_EVENT_LOG_SIZE;
return log;
}
static inline void
audio_thread_event_log_deinit(struct audio_thread_event_log *log, char *name)
{
if (log) {
if (atlog_rw_shm_fd >= 0) {
munmap(log, sizeof(*log));
cras_shm_close_unlink(name, atlog_rw_shm_fd);
} else {
free(log);
}
if (atlog_ro_shm_fd >= 0)
close(atlog_ro_shm_fd);
}
}
/* Log a tag and the current time, Uses two words, the first is split
* 8 bits for tag and 24 for seconds, second word is micro seconds.
*/
static inline void
audio_thread_event_log_data(struct audio_thread_event_log *log,
enum AUDIO_THREAD_LOG_EVENTS event, uint32_t data1,
uint32_t data2, uint32_t data3)
{
struct timespec now;
uint64_t pos_mod_len = log->write_pos % AUDIO_THREAD_EVENT_LOG_SIZE;
clock_gettime(CLOCK_MONOTONIC_RAW, &now);
log->log[pos_mod_len].tag_sec =
(event << 24) | (now.tv_sec & 0x00ffffff);
log->log[pos_mod_len].nsec = now.tv_nsec;
log->log[pos_mod_len].data1 = data1;
log->log[pos_mod_len].data2 = data2;
log->log[pos_mod_len].data3 = data3;
log->write_pos++;
}
#endif /* AUDIO_THREAD_LOG_H_ */
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