*/
#include <glib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
#include <ltt/compiler.h>
#include <ltt/markers.h>
+#include <ltt/ltt-private.h>
#define DEFAULT_MARKERS_NUM 100
+#define DEFAULT_FIELDS_NUM 1
+#define MAX_NAME_LEN 1024
-int marker_format_event(LttTrace *trace, const char *name, const char *format)
+static inline const char *parse_trace_type(struct marker_info *info,
+ const char *fmt,
+ char *trace_size, enum ltt_type *trace_type,
+ unsigned long *attributes)
+{
+ int qualifier; /* 'h', 'l', or 'L' for integer fields */
+ /* 'z' support added 23/7/1999 S.H. */
+ /* 'z' changed to 'Z' --davidm 1/25/99 */
+ /* 't' added for ptrdiff_t */
+
+ /* parse attributes. */
+ repeat:
+ switch (*fmt) {
+ case 'b':
+ *attributes |= LTT_ATTRIBUTE_COMPACT;
+ ++fmt;
+ goto repeat;
+ case 'n':
+ *attributes |= LTT_ATTRIBUTE_NETWORK_BYTE_ORDER;
+ ++fmt;
+ goto repeat;
+ }
+
+ /* get the conversion qualifier */
+ qualifier = -1;
+ if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
+ *fmt =='Z' || *fmt == 'z' || *fmt == 't' ||
+ *fmt == 'S' || *fmt == '1' || *fmt == '2' ||
+ *fmt == '4' || *fmt == 8) {
+ qualifier = *fmt;
+ ++fmt;
+ if (qualifier == 'l' && *fmt == 'l') {
+ qualifier = 'L';
+ ++fmt;
+ }
+ }
+
+ switch (*fmt) {
+ case 'c':
+ *trace_type = LTT_TYPE_UNSIGNED_INT;
+ *trace_size = sizeof(char);
+ goto parse_end;
+ case 's':
+ *trace_type = LTT_TYPE_STRING;
+ goto parse_end;
+ case 'p':
+ *trace_type = LTT_TYPE_UNSIGNED_INT;
+ *trace_size = info->pointer_size;
+ goto parse_end;
+ case 'd':
+ case 'i':
+ *trace_type = LTT_TYPE_SIGNED_INT;
+ break;
+ case 'o':
+ case 'u':
+ case 'x':
+ case 'X':
+ *trace_type = LTT_TYPE_UNSIGNED_INT;
+ break;
+ default:
+ if (!*fmt)
+ --fmt;
+ goto parse_end;
+ }
+ switch (qualifier) {
+ case 'L':
+ *trace_size = sizeof(long long);
+ break;
+ case 'l':
+ *trace_size = info->long_size;
+ break;
+ case 'Z':
+ case 'z':
+ *trace_size = info->size_t_size;
+ break;
+ case 't':
+ *trace_size = info->pointer_size;
+ break;
+ case 'h':
+ *trace_size = sizeof(short);
+ break;
+ case '1':
+ *trace_size = sizeof(uint8_t);
+ break;
+ case '2':
+ *trace_size = sizeof(guint16);
+ break;
+ case '4':
+ *trace_size = sizeof(uint32_t);
+ break;
+ case '8':
+ *trace_size = sizeof(uint64_t);
+ break;
+ default:
+ *trace_size = info->int_size;
+ }
+
+parse_end:
+ return fmt;
+}
+
+/*
+ * Restrictions:
+ * Field width and precision are *not* supported.
+ * %n not supported.
+ */
+__attribute__((no_instrument_function))
+static inline const char *parse_c_type(struct marker_info *info,
+ const char *fmt,
+ char *c_size, enum ltt_type *c_type)
+{
+ int qualifier; /* 'h', 'l', or 'L' for integer fields */
+ /* 'z' support added 23/7/1999 S.H. */
+ /* 'z' changed to 'Z' --davidm 1/25/99 */
+ /* 't' added for ptrdiff_t */
+
+ /* process flags : ignore standard print formats for now. */
+ repeat:
+ switch (*fmt) {
+ case '-':
+ case '+':
+ case ' ':
+ case '#':
+ case '0':
+ ++fmt;
+ goto repeat;
+ }
+
+ /* get the conversion qualifier */
+ qualifier = -1;
+ if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
+ *fmt =='Z' || *fmt == 'z' || *fmt == 't' ||
+ *fmt == 'S') {
+ qualifier = *fmt;
+ ++fmt;
+ if (qualifier == 'l' && *fmt == 'l') {
+ qualifier = 'L';
+ ++fmt;
+ }
+ }
+
+ switch (*fmt) {
+ case 'c':
+ *c_type = LTT_TYPE_UNSIGNED_INT;
+ *c_size = sizeof(unsigned char);
+ goto parse_end;
+ case 's':
+ *c_type = LTT_TYPE_STRING;
+ goto parse_end;
+ case 'p':
+ *c_type = LTT_TYPE_UNSIGNED_INT;
+ *c_size = info->pointer_size;
+ goto parse_end;
+ case 'd':
+ case 'i':
+ *c_type = LTT_TYPE_SIGNED_INT;
+ break;
+ case 'o':
+ case 'u':
+ case 'x':
+ case 'X':
+ *c_type = LTT_TYPE_UNSIGNED_INT;
+ break;
+ default:
+ if (!*fmt)
+ --fmt;
+ goto parse_end;
+ }
+ switch (qualifier) {
+ case 'L':
+ *c_size = sizeof(long long);
+ break;
+ case 'l':
+ *c_size = info->long_size;
+ break;
+ case 'Z':
+ case 'z':
+ *c_size = info->size_t_size;
+ break;
+ case 't':
+ *c_size = info->pointer_size;
+ break;
+ case 'h':
+ *c_size = sizeof(short);
+ break;
+ default:
+ *c_size = info->int_size;
+ }
+
+parse_end:
+ return fmt;
+}
+
+static inline long add_type(struct marker_info *info,
+ long offset, const char *name,
+ char trace_size, enum ltt_type trace_type,
+ char c_size, enum ltt_type c_type, unsigned long attributes,
+ unsigned int field_count)
+{
+ struct marker_field *field;
+ char tmpname[MAX_NAME_LEN];
+
+ info->fields = g_array_set_size(info->fields, info->fields->len+1);
+ field = &g_array_index(info->fields, struct marker_field,
+ info->fields->len-1);
+ if (name)
+ field->name = g_quark_from_string(name);
+ else {
+ snprintf(tmpname, MAX_NAME_LEN-1, "field %u", field_count);
+ field->name = g_quark_from_string(tmpname);
+ }
+ field->type = trace_type;
+
+ switch (trace_type) {
+ case LTT_TYPE_SIGNED_INT:
+ case LTT_TYPE_UNSIGNED_INT:
+ field->size = trace_size;
+ field->alignment = trace_size;
+ field->attributes = attributes;
+ if (offset == -1) {
+ field->offset = -1;
+ field->static_offset = 0;
+ return -1;
+ } else {
+ field->offset = offset + ltt_align(offset, field->alignment,
+ info->alignment);
+ field->static_offset = 1;
+ return field->offset + trace_size;
+ }
+ case LTT_TYPE_STRING:
+ field->offset = offset;
+ field->size = 0; /* Variable length, size is 0 */
+ field->alignment = 1;
+ if (offset == -1)
+ field->static_offset = 0;
+ else
+ field->static_offset = 1;
+ return -1;
+ default:
+ g_error("Unexpected type"); //FIXME: compact type
+ return 0;
+ }
+}
+
+long marker_update_fields_offsets(struct marker_info *info, const char *data)
+{
+ struct marker_field *field;
+ unsigned int i;
+ long offset = 0;
+
+ for (i = 0; i < info->fields->len; i++) {
+ field = &g_array_index(info->fields, struct marker_field, i);
+
+ if (field->static_offset)
+ continue;
+
+ switch (field->type) {
+ case LTT_TYPE_SIGNED_INT:
+ case LTT_TYPE_UNSIGNED_INT:
+ field->offset = offset + ltt_align(offset, field->alignment,
+ info->alignment);
+ offset = field->offset + field->size;
+ break;
+ case LTT_TYPE_STRING:
+ field->offset = offset;
+ offset = offset + strlen(&data[offset]) + 1;
+ // not aligning on pointer size, breaking genevent backward compatibility.
+ break;
+ default:
+ g_error("Unexpected type"); //FIXME: compact type
+ return -1;
+ }
+ }
+ return offset;
+}
+
+static void format_parse(const char *fmt, struct marker_info *info)
+{
+ char trace_size = 0, c_size = 0; /*
+ * 0 (unset), 1, 2, 4, 8 bytes.
+ */
+ enum ltt_type trace_type = LTT_TYPE_NONE, c_type = LTT_TYPE_NONE;
+ unsigned long attributes = 0;
+ long offset = 0;
+ const char *name_begin = NULL, *name_end = NULL;
+ char *name = NULL;
+ unsigned int field_count = 1;
+
+ for (; *fmt ; ++fmt) {
+ switch (*fmt) {
+ case '#':
+ /* tracetypes (#) */
+ ++fmt; /* skip first '#' */
+ if (*fmt == '#') /* Escaped ## */
+ break;
+ attributes = 0;
+ fmt = parse_trace_type(info, fmt, &trace_size, &trace_type,
+ &attributes);
+ break;
+ case '%':
+ /* c types (%) */
+ ++fmt; /* skip first '%' */
+ if (*fmt == '%') /* Escaped %% */
+ break;
+ fmt = parse_c_type(info, fmt, &c_size, &c_type);
+ /*
+ * Output c types if no trace types has been
+ * specified.
+ */
+ if (!trace_size)
+ trace_size = c_size;
+ if (trace_type == LTT_TYPE_NONE)
+ trace_type = c_type;
+ if (c_type == LTT_TYPE_STRING)
+ trace_type = LTT_TYPE_STRING;
+ /* perform trace write */
+ offset = add_type(info, offset, name, trace_size,
+ trace_type, c_size, c_type, attributes, field_count++);
+ trace_size = c_size = 0;
+ trace_type = c_size = LTT_TYPE_NONE;
+ attributes = 0;
+ name_begin = NULL;
+ if (name) {
+ g_free(name);
+ name = NULL;
+ }
+ break;
+ case ' ':
+ if (!name_end) {
+ name_end = fmt;
+ if (name)
+ g_free(name);
+ name = g_new(char, name_end - name_begin + 1);
+ memcpy(name, name_begin, name_end - name_begin);
+ name[name_end - name_begin] = '\0';
+ }
+ break; /* Skip white spaces */
+ default:
+ if (!name) {
+ name_begin = fmt;
+ name_end = NULL;
+ }
+ }
+ }
+ info->size = offset;
+ if (name)
+ g_free(name);
+}
+
+int marker_parse_format(const char *format, struct marker_info *info)
+{
+ if (info->fields)
+ g_array_free(info->fields, TRUE);
+ info->fields = g_array_sized_new(FALSE, TRUE,
+ sizeof(struct marker_field), DEFAULT_FIELDS_NUM);
+ format_parse(format, info);
+}
+
+int marker_format_event(LttTrace *trace, GQuark name, const char *format)
{
struct marker_info *info;
g_error("Got marker format %s, but marker name %s has no ID yet. "
"Kernel issue.",
format, name);
- if (info->format)
- g_free(info->format);
- info->format = g_new(char, strlen(format)+1);
- strcpy(info->format, format);
- /* TODO deal with format string */
+ for (; info != NULL; info = info->next) {
+ if (info->format)
+ g_free(info->format);
+ info->format = g_new(char, strlen(format)+1);
+ strcpy(info->format, format);
+ if (marker_parse_format(format, info))
+ g_error("Error parsing marker format %s for marker %s", format,
+ g_quark_to_string(name));
+ }
}
-int marker_id_event(LttTrace *trace, const char *name, uint16_t id)
+int marker_id_event(LttTrace *trace, GQuark name, guint16 id,
+ uint8_t int_size, uint8_t long_size, uint8_t pointer_size,
+ uint8_t size_t_size, uint8_t alignment)
{
- struct marker_info *info;
+ struct marker_info *info, *head;
if (trace->markers->len < id)
trace->markers = g_array_set_size(trace->markers, id+1);
info = &g_array_index(trace->markers, struct marker_info, id);
- if (info->name)
- g_free(info->name);
- info->name = g_new(char, strlen(name)+1);
- strcpy(info->name, name);
- g_hash_table_insert(trace->markers_hash, (gpointer)name, info);
+ info->name = name;
+ info->int_size = int_size;
+ info->long_size = long_size;
+ info->pointer_size = pointer_size;
+ info->size_t_size = size_t_size;
+ info->alignment = alignment;
+ info->next = NULL;
+ head = g_hash_table_lookup(trace->markers_hash, (gconstpointer)name);
+ if (!head)
+ g_hash_table_insert(trace->markers_hash, (gpointer)name, info);
+ else
+ head->next = info;
}
int allocate_marker_data(LttTrace *trace)
/* Init array to 0 */
trace->markers = g_array_sized_new(FALSE, TRUE,
sizeof(struct marker_info), DEFAULT_MARKERS_NUM);
- trace->markers_hash = g_hash_table_new(g_str_hash, g_str_equal);
+ if (!trace->markers)
+ return -ENOMEM;
+ trace->markers_hash = g_hash_table_new(g_direct_hash, g_direct_equal);
+ if (!trace->markers_hash)
+ return -ENOMEM;
+ return 0;
}
-int destroy_marker_data(LttTrace *trace)
+void destroy_marker_data(LttTrace *trace)
{
unsigned int i;
struct marker_info *info;
for (i=0; i<trace->markers->len; i++) {
info = &g_array_index(trace->markers, struct marker_info, i);
- if (info->name)
- g_free(info->name);
if (info->format)
g_free(info->format);
+ if (info->fields)
+ g_array_free(info->fields, TRUE);
}
g_array_free(trace->markers, TRUE);
g_hash_table_destroy(trace->markers_hash);
projects / lttv.git / blobdiff