Implement file-backed ring buffer

[lttng-ust.git] / include / lttng / ust-events.h

diff --git a/include/lttng/ust-events.h b/include/lttng/ust-events.h
index 01f611b29c789909f7f933698c1e71b7be8d9cc6..e4b4edeba005e25e926a54a7674d51915e766d65 100644 (file)
--- a/include/lttng/ust-events.h
+++ b/include/lttng/ust-events.h
@@ -258,11 +258,12 @@ struct lttng_ctx_field {
        void (*destroy)(struct lttng_ctx_field *field);
 };
 
-#define LTTNG_UST_CTX_PADDING  24
+#define LTTNG_UST_CTX_PADDING  20
 struct lttng_ctx {
        struct lttng_ctx_field *fields;
        unsigned int nr_fields;
        unsigned int allocated_fields;
+       unsigned int largest_align;
        char padding[LTTNG_UST_CTX_PADDING];
 };
 
@@ -438,7 +439,8 @@ struct lttng_channel_ops {
                        unsigned int switch_timer_interval,
                        unsigned int read_timer_interval,
                        unsigned char *uuid,
-                       uint32_t chan_id);
+                       uint32_t chan_id,
+                       const char *shm_path);
        void (*channel_destroy)(struct lttng_channel *chan);
        union {
                void *_deprecated1;
@@ -590,6 +592,7 @@ void lttng_probes_exit(void);
 int lttng_find_context(struct lttng_ctx *ctx, const char *name);
 int lttng_get_context_index(struct lttng_ctx *ctx, const char *name);
 struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx_p);
+void lttng_context_update(struct lttng_ctx *ctx);
 void lttng_remove_context_field(struct lttng_ctx **ctx_p,
                                struct lttng_ctx_field *field);
 void lttng_destroy_context(struct lttng_ctx *ctx);