struct perf_session *perf_session__new(const char *filename, int mode,
bool force, bool repipe,
struct perf_tool *tool)
{
struct perf_session *self;
struct stat st;
size_t len;
if (!filename || !strlen(filename)) {
if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
filename = "-";
else
filename = "perf.data";
}
len = strlen(filename);
self = zalloc(sizeof(*self) + len);
if (self == NULL)
goto out;
memcpy(self->filename, filename, len);
self->repipe = repipe;
INIT_LIST_HEAD(&self->ordered_samples.samples);
INIT_LIST_HEAD(&self->ordered_samples.sample_cache);
INIT_LIST_HEAD(&self->ordered_samples.to_free);
machines__init(&self->machines);
if (mode == O_RDONLY) {
if (perf_session__open(self, force) < 0)
goto out_delete;
perf_session__set_id_hdr_size(self);
} else if (mode == O_WRONLY) {
/*
* In O_RDONLY mode this will be performed when reading the
* kernel MMAP event, in perf_event__process_mmap().
*/
if (perf_session__create_kernel_maps(self) < 0)
goto out_delete;
}
if (tool && tool->ordering_requires_timestamps &&
tool->ordered_samples && !perf_evlist__sample_id_all(self->evlist)) {
dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
tool->ordered_samples = false;
}
out:
return self;
out_delete:
perf_session__delete(self);
return NULL;
}
struct perf_session *perf_session__new(struct perf_data_file *file,
bool repipe, struct perf_tool *tool)
{
struct perf_session *session = zalloc(sizeof(*session));
if (!session)
goto out;
session->repipe = repipe;
INIT_LIST_HEAD(&session->ordered_samples.samples);
INIT_LIST_HEAD(&session->ordered_samples.sample_cache);
INIT_LIST_HEAD(&session->ordered_samples.to_free);
machines__init(&session->machines);
if (file) {
if (perf_data_file__open(file))
goto out_delete;
session->file = file;
if (perf_data_file__is_read(file)) {
if (perf_session__open(session) < 0)
goto out_close;
perf_session__set_id_hdr_size(session);
}
}
if (!file || perf_data_file__is_write(file)) {
/*
* In O_RDONLY mode this will be performed when reading the
* kernel MMAP event, in perf_event__process_mmap().
*/
if (perf_session__create_kernel_maps(session) < 0)
goto out_delete;
}
if (tool && tool->ordering_requires_timestamps &&
tool->ordered_samples && !perf_evlist__sample_id_all(session->evlist)) {
dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
tool->ordered_samples = false;
}
return session;
out_close:
perf_data_file__close(file);
out_delete:
perf_session__delete(session);
out:
return NULL;
}
struct perf_session *perf_session__new(const char *filename, int mode, bool force)
{
size_t len = filename ? strlen(filename) + 1 : 0;
struct perf_session *self = zalloc(sizeof(*self) + len);
if (self == NULL)
goto out;
if (perf_header__init(&self->header) < 0)
goto out_free;
memcpy(self->filename, filename, len);
self->threads = RB_ROOT;
self->last_match = NULL;
self->mmap_window = 32;
self->cwd = NULL;
self->cwdlen = 0;
self->unknown_events = 0;
map_groups__init(&self->kmaps);
if (mode == O_RDONLY) {
if (perf_session__open(self, force) < 0)
goto out_delete;
} else if (mode == O_WRONLY) {
/*
* In O_RDONLY mode this will be performed when reading the
* kernel MMAP event, in event__process_mmap().
*/
if (perf_session__create_kernel_maps(self) < 0)
goto out_delete;
}
self->sample_type = perf_header__sample_type(&self->header);
out:
return self;
out_free:
free(self);
return NULL;
out_delete:
perf_session__delete(self);
return NULL;
}
