Esempi in C++ (Cpp) per pevent_parse_header_page

Esempio n. 1

File: trace-util.c Progetto: ericmiao/trace-cmd

static int read_header(struct pevent *pevent, const char *events_dir)
{
	struct stat st;
	char *header;
	char *buf;
	int len;
	int ret = -1;

	header = append_file(events_dir, "header_page");

	ret = stat(header, &st);
	if (ret < 0)
		goto out;

	len = read_file(header, &buf);
	if (len < 0)
		goto out;

	pevent_parse_header_page(pevent, buf, len, sizeof(long));

	free(buf);

	ret = 0;
 out:
	free(header);
	return ret;
}

Esempio n. 2

File: trace-event-read.c Progetto: AeroGirl/VAR-SOM-AM33-SDK7-Kernel

static int read_header_files(struct pevent *pevent)
{
	unsigned long long size;
	char *header_page;
	char buf[BUFSIZ];
	int ret = 0;

	if (do_read(buf, 12) < 0)
		return -1;

	if (memcmp(buf, "header_page", 12) != 0) {
		pr_debug("did not read header page");
		return -1;
	}

	size = read8(pevent);

	header_page = malloc(size);
	if (header_page == NULL)
		return -1;

	if (do_read(header_page, size) < 0) {
		pr_debug("did not read header page");
		free(header_page);
		return -1;
	}

	if (!pevent_parse_header_page(pevent, header_page, size,
				      pevent_get_long_size(pevent))) {
		/*
		 * The commit field in the page is of type long,
		 * use that instead, since it represents the kernel.
		 */
		pevent_set_long_size(pevent, pevent->header_page_size_size);
	}
	free(header_page);

	if (do_read(buf, 13) < 0)
		return -1;

	if (memcmp(buf, "header_event", 13) != 0) {
		pr_debug("did not read header event");
		return -1;
	}

	size = read8(pevent);
	skip(size);

	return ret;
}