library mass rename: add lttng- prefix

[ust.git] / liblttng-ust / lttng-context-pthread-id.c

diff --git a/liblttng-ust/lttng-context-pthread-id.c b/liblttng-ust/lttng-context-pthread-id.c
new file mode 100644 (file)
index 0000000..62eda80
--- /dev/null
+++ b/liblttng-ust/lttng-context-pthread-id.c
@@ -0,0 +1,59 @@
+/*
+ * (C) Copyright       2009-2011 -
+ *             Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * LTTng UST pthread_id context.
+ *
+ * Dual LGPL v2.1/GPL v2 license.
+ */
+
+#include <pthread.h>
+#include <lttng/ust-events.h>
+#include <lttng/ust-tracer.h>
+#include <lttng/ringbuffer-config.h>
+
+static
+size_t pthread_id_get_size(size_t offset)
+{
+       size_t size = 0;
+
+       size += lib_ring_buffer_align(offset, lttng_alignof(unsigned long));
+       size += sizeof(unsigned long);
+       return size;
+}
+
+static
+void pthread_id_record(struct lttng_ctx_field *field,
+                struct lttng_ust_lib_ring_buffer_ctx *ctx,
+                struct ltt_channel *chan)
+{
+       unsigned long pthread_id;
+
+       pthread_id = (unsigned long) pthread_self();
+       lib_ring_buffer_align_ctx(ctx, lttng_alignof(pthread_id));
+       chan->ops->event_write(ctx, &pthread_id, sizeof(pthread_id));
+}
+
+int lttng_add_pthread_id_to_ctx(struct lttng_ctx **ctx)
+{
+       struct lttng_ctx_field *field;
+
+       field = lttng_append_context(ctx);
+       if (!field)
+               return -ENOMEM;
+       if (lttng_find_context(*ctx, "pthread_id")) {
+               lttng_remove_context_field(ctx, field);
+               return -EEXIST;
+       }
+       field->event_field.name = "pthread_id";
+       field->event_field.type.atype = atype_integer;
+       field->event_field.type.u.basic.integer.size = sizeof(unsigned long) * CHAR_BIT;
+       field->event_field.type.u.basic.integer.alignment = lttng_alignof(unsigned long) * CHAR_BIT;
+       field->event_field.type.u.basic.integer.signedness = lttng_is_signed_type(unsigned long);
+       field->event_field.type.u.basic.integer.reverse_byte_order = 0;
+       field->event_field.type.u.basic.integer.base = 10;
+       field->event_field.type.u.basic.integer.encoding = lttng_encode_none;
+       field->get_size = pthread_id_get_size;
+       field->record = pthread_id_record;
+       return 0;
+}