/**
* Initialization function for process that
* wants to register heartbeats
* @param hb pointer to heartbeat_t
* @param min_target double
* @param max_target double
* @param window_size int64_t
* @param buffer_depth int64_t
* @param log_name pointer to char
*/
int heartbeat_init(heartbeat_t* hb,
double min_target,
double max_target,
int64_t window_size,
int64_t buffer_depth,
char* log_name) {
// FILE* file;
int rc = 0;
int pid = getpid();
// char hb_filename[256];
hb->state = HB_alloc_state(pid);
hb->state->pid = pid;
if(log_name != NULL) {
hb->text_file = fopen(log_name, "w");
fprintf(hb->text_file, "Beat Tag Timestamp Global Rate Window Rate Instant Rate\n" );
}
else
hb->text_file = NULL;
if(getenv("HEARTBEAT_ENABLED_DIR") == NULL)
return 1;
sprintf(hb->filename, "%s/%d", getenv("HEARTBEAT_ENABLED_DIR"), hb->state->pid);
hb->log = HB_alloc_log(hb->state->pid, buffer_depth);
if(hb->log == NULL)
rc = 2;
hb->first_timestamp = hb->last_timestamp = -1;
hb->state->window_size = window_size;
hb->window = (int64_t*) malloc(window_size*sizeof(int64_t));
hb->current_index = 0;
hb->state->min_heartrate = min_target;
hb->state->max_heartrate = max_target;
hb->state->counter = 0;
hb->state->buffer_index = 0;
hb->state->read_index = 0;
hb->state->buffer_depth = buffer_depth;
pthread_mutex_init(&hb->mutex, NULL);
hb->steady_state = 0;
hb->state->valid = 0;
hb->binary_file = fopen(hb->filename, "w");
if ( hb->binary_file == NULL ) {
return 1;
}
fclose(hb->binary_file);
return rc;
}
heartbeat_t* heartbeat_init(int64_t window_size,
int64_t buffer_depth,
const char* log_name,
double min_target,
double max_target) {
int pid = getpid();
heartbeat_t* hb = (heartbeat_t*) malloc(sizeof(heartbeat_t));
if (hb == NULL) {
perror("Failed to malloc heartbeat");
return NULL;
}
// set to NULL so free doesn't fail in finish function if we have to abort
hb->window = NULL;
hb->text_file = NULL;
hb->state = HB_alloc_state(pid);
if (hb->state == NULL) {
heartbeat_finish(hb);
return NULL;
}
hb->state->pid = pid;
if(log_name != NULL) {
hb->text_file = fopen(log_name, "w");
if (hb->text_file == NULL) {
perror("Failed to open heartbeat log file");
heartbeat_finish(hb);
return NULL;
} else {
fprintf(hb->text_file, "Beat Tag Timestamp Global Rate Window Rate Instant Rate\n" );
}
} else {
hb->text_file = NULL;
}
if(getenv("HEARTBEAT_ENABLED_DIR") == NULL) {
heartbeat_finish(hb);
return NULL;
}
sprintf(hb->filename, "%s/%d", getenv("HEARTBEAT_ENABLED_DIR"), hb->state->pid);
printf("%s\n", hb->filename);
hb->log = HB_alloc_log(hb->state->pid, buffer_depth);
if(hb->log == NULL) {
heartbeat_finish(hb);
return NULL;
}
hb->first_timestamp = hb->last_timestamp = -1;
hb->state->window_size = window_size;
hb->window = (int64_t*) malloc(window_size*sizeof(int64_t));
if (hb->window == NULL) {
perror("Failed to malloc window size");
heartbeat_finish(hb);
return NULL;
}
hb->current_index = 0;
hb->state->min_heartrate = min_target;
hb->state->max_heartrate = max_target;
hb->state->counter = 0;
hb->state->buffer_index = 0;
hb->state->read_index = 0;
hb->state->buffer_depth = buffer_depth;
pthread_mutex_init(&hb->mutex, NULL);
hb->steady_state = 0;
hb->state->valid = 0;
hb->binary_file = fopen(hb->filename, "w");
if ( hb->binary_file == NULL ) {
perror("Failed to open heartbeat log");
heartbeat_finish(hb);
return NULL;
}
fclose(hb->binary_file);
return hb;
}