}
}
+static
+const char *lttng_cs_ctx_mode_length_name(enum lttng_cs_ctx_modes mode)
+{
+ switch (mode) {
+ case CALLSTACK_KERNEL:
+ return "_callstack_kernel_length";
+ case CALLSTACK_USER:
+ return "_callstack_user_length";
+ default:
+ return NULL;
+ }
+}
+
static
int init_type_callstack_kernel(void)
{
return &cs->stack_trace[buffer_nesting];
}
+static
+size_t lttng_callstack_length_get_size(size_t offset, struct lttng_ctx_field *field,
+ struct lib_ring_buffer_ctx *ctx,
+ struct lttng_channel *chan)
+{
+ size_t orig_offset = offset;
+
+ offset += lib_ring_buffer_align(offset, lttng_alignof(unsigned int));
+ offset += sizeof(unsigned int);
+ return offset - orig_offset;
+}
+
/*
* In order to reserve the correct size, the callstack is computed. The
* resulting callstack is saved to be accessed in the record step.
*/
static
-size_t lttng_callstack_get_size(size_t offset, struct lttng_ctx_field *field,
- struct lib_ring_buffer_ctx *ctx,
- struct lttng_channel *chan)
+size_t lttng_callstack_sequence_get_size(size_t offset, struct lttng_ctx_field *field,
+ struct lib_ring_buffer_ctx *ctx,
+ struct lttng_channel *chan)
{
struct lttng_stack_trace *trace;
struct field_data *fdata = field->priv;
/* do not write data if no space is available */
trace = stack_trace_context(field, ctx);
if (unlikely(!trace)) {
- offset += lib_ring_buffer_align(offset, lttng_alignof(unsigned int));
- offset += sizeof(unsigned int);
offset += lib_ring_buffer_align(offset, lttng_alignof(unsigned long));
return offset - orig_offset;
}
* If the array is filled, add our own marker to show that the
* stack is incomplete.
*/
- offset += lib_ring_buffer_align(offset, lttng_alignof(unsigned int));
- offset += sizeof(unsigned int);
offset += lib_ring_buffer_align(offset, lttng_alignof(unsigned long));
offset += sizeof(unsigned long) * trace->nr_entries;
/* Add our own ULONG_MAX delimiter to show incomplete stack. */
}
static
-void lttng_callstack_record(struct lttng_ctx_field *field,
+void lttng_callstack_length_record(struct lttng_ctx_field *field,
struct lib_ring_buffer_ctx *ctx,
struct lttng_channel *chan)
{
struct lttng_stack_trace *trace = stack_trace_context(field, ctx);
unsigned int nr_seq_entries;
+ lib_ring_buffer_align_ctx(ctx, lttng_alignof(unsigned int));
if (unlikely(!trace)) {
nr_seq_entries = 0;
- lib_ring_buffer_align_ctx(ctx, lttng_alignof(unsigned int));
- chan->ops->event_write(ctx, &nr_seq_entries, sizeof(unsigned int));
- lib_ring_buffer_align_ctx(ctx, lttng_alignof(unsigned long));
+ } else {
+ nr_seq_entries = trace->nr_entries;
+ if (trace->nr_entries == MAX_ENTRIES)
+ nr_seq_entries++;
+ }
+ chan->ops->event_write(ctx, &nr_seq_entries, sizeof(unsigned int));
+}
+
+static
+void lttng_callstack_sequence_record(struct lttng_ctx_field *field,
+ struct lib_ring_buffer_ctx *ctx,
+ struct lttng_channel *chan)
+{
+ struct lttng_stack_trace *trace = stack_trace_context(field, ctx);
+ unsigned int nr_seq_entries;
+
+ lib_ring_buffer_align_ctx(ctx, lttng_alignof(unsigned long));
+ if (unlikely(!trace)) {
return;
}
- lib_ring_buffer_align_ctx(ctx, lttng_alignof(unsigned int));
nr_seq_entries = trace->nr_entries;
if (trace->nr_entries == MAX_ENTRIES)
nr_seq_entries++;
- chan->ops->event_write(ctx, &nr_seq_entries, sizeof(unsigned int));
- lib_ring_buffer_align_ctx(ctx, lttng_alignof(unsigned long));
chan->ops->event_write(ctx, trace->entries,
sizeof(unsigned long) * trace->nr_entries);
/* Add our own ULONG_MAX delimiter to show incomplete stack. */