standardize on flush buffer (no plural)

[lttng-ust.git] / libust / ltt-ring-buffer-metadata-client.h

diff --git a/libust/ltt-ring-buffer-metadata-client.h b/libust/ltt-ring-buffer-metadata-client.h
index 8efa9e3716379c21956371b9ffd8b69d7c0653b9..477d6b955b9b8de731d1628b0d2f49c3b823068b 100644 (file)
--- a/libust/ltt-ring-buffer-metadata-client.h
+++ b/libust/ltt-ring-buffer-metadata-client.h
@@ -23,6 +23,8 @@ struct metadata_packet_header {
        uint8_t  compression_scheme;    /* 0 if unused */
        uint8_t  encryption_scheme;     /* 0 if unused */
        uint8_t  checksum_scheme;       /* 0 if unused */
+       uint8_t  major;                 /* CTF spec major version number */
+       uint8_t  minor;                 /* CTF spec minor version number */
        uint8_t  header_end[0];
 };
 
@@ -96,6 +98,9 @@ static void client_buffer_begin(struct lib_ring_buffer *buf, u64 tsc,
        header->compression_scheme = 0; /* 0 if unused */
        header->encryption_scheme = 0;  /* 0 if unused */
        header->checksum_scheme = 0;    /* 0 if unused */
+       header->major = CTF_SPEC_MAJOR;
+       header->minor = CTF_SPEC_MINOR;
+
 }
 
 /*
@@ -160,29 +165,37 @@ struct ltt_channel *_channel_create(const char *name,
                                struct ltt_channel *ltt_chan, void *buf_addr,
                                size_t subbuf_size, size_t num_subbuf,
                                unsigned int switch_timer_interval,
-                               unsigned int read_timer_interval)
+                               unsigned int read_timer_interval,
+                               int *shm_fd, int *wait_fd,
+                               uint64_t *memory_map_size)
 {
        ltt_chan->handle = channel_create(&client_config, name, ltt_chan, buf_addr,
                              subbuf_size, num_subbuf, switch_timer_interval,
-                             read_timer_interval);
-       ltt_chan->chan = shmp(handle, handle->chan);
+                             read_timer_interval, shm_fd, wait_fd,
+                             memory_map_size);
+       if (!ltt_chan->handle)
+               return NULL;
+       ltt_chan->chan = shmp(ltt_chan->handle, ltt_chan->handle->chan);
        return ltt_chan;
 }
 
 static
 void ltt_channel_destroy(struct ltt_channel *ltt_chan)
 {
-       channel_destroy(ltt_chan->chan, ltt_chan->handle);
+       channel_destroy(ltt_chan->chan, ltt_chan->handle, 0);
 }
 
 static
 struct lib_ring_buffer *ltt_buffer_read_open(struct channel *chan,
-                                            struct shm_handle *handle)
+                                            struct shm_handle *handle,
+                                            int *shm_fd, int *wait_fd,
+                                            uint64_t *memory_map_size)
 {
        struct lib_ring_buffer *buf;
 
-       buf = channel_get_ring_buffer(&client_config, chan, 0, handle);
-       if (!lib_ring_buffer_open_read(buf, handle))
+       buf = channel_get_ring_buffer(&client_config, chan,
+                       0, handle, shm_fd, wait_fd, memory_map_size);
+       if (!lib_ring_buffer_open_read(buf, handle, 0))
                return buf;
        return NULL;
 }
@@ -191,7 +204,7 @@ static
 void ltt_buffer_read_close(struct lib_ring_buffer *buf,
                           struct shm_handle *handle)
 {
-       lib_ring_buffer_release_read(buf, handle);
+       lib_ring_buffer_release_read(buf, handle, 0);
 }
 
 static
@@ -256,6 +269,21 @@ int ltt_is_disabled(struct channel *chan)
        return lib_ring_buffer_channel_is_disabled(chan);
 }
 
+static
+int ltt_flush_buffer(struct channel *chan, struct shm_handle *handle)
+{
+       struct lib_ring_buffer *buf;
+       int shm_fd, wait_fd;
+       uint64_t memory_map_size;
+
+       buf = channel_get_ring_buffer(&client_config, chan,
+                       0, handle, &shm_fd, &wait_fd,
+                       &memory_map_size);
+       lib_ring_buffer_switch(&client_config, buf,
+                       SWITCH_ACTIVE, handle);
+       return 0;
+}
+
 static struct ltt_transport ltt_relay_transport = {
        .name = "relay-" RING_BUFFER_MODE_TEMPLATE_STRING "-mmap",
        .ops = {
@@ -271,18 +299,17 @@ static struct ltt_transport ltt_relay_transport = {
                //.get_hp_wait_queue = ltt_get_hp_wait_queue,
                .is_finalized = ltt_is_finalized,
                .is_disabled = ltt_is_disabled,
+               .flush_buffer = ltt_flush_buffer,
        },
 };
 
-static
-void __attribute__((constructor)) ltt_ring_buffer_client_init(void)
+void RING_BUFFER_MODE_TEMPLATE_INIT(void)
 {
        DBG("LTT : ltt ring buffer client init\n");
        ltt_transport_register(&ltt_relay_transport);
 }
 
-static
-void __attribute__((destructor)) ltt_ring_buffer_client_exit(void)
+void RING_BUFFER_MODE_TEMPLATE_EXIT(void)
 {
        DBG("LTT : ltt ring buffer client exit\n");
        ltt_transport_unregister(&ltt_relay_transport);