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authorDave Barach <dave@barachs.net>2019-11-14 08:03:48 -0500
committerAndrew Yourtchenko <ayourtch@gmail.com>2020-02-06 12:21:23 +0000
commitb38b04edea16a9c9457415f363ec8d0b5fd98929 (patch)
tree098fe562085008a2d6a2fe2c225c43b8e9f38b18
parent4b50a8f025053732bc6ad44394f3b83bc854e304 (diff)
api: configurable binary api client rx pthread fcn
Add vl_client_connect_to_vlib_thread_fn (...) and export the memory_client_main_t definition. If you use this new API, make sure not to miss the setjmp / longjmp dance shown in .../src/vlibmemory/memory_client.c:rx_thread_fn(...), which is required for the rx pthread to terminate cleanly; please process client delete reply messages in the rx thread... Type: refactor Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: Ia67038ec59e2e14b174c67afca15b2c3f67a4d20 (cherry picked from commit 920180e5e0722c78c258ff26476fd5efa434032d)
-rw-r--r--src/vlibmemory/memory_client.c37
-rw-r--r--src/vlibmemory/memory_client.h21
2 files changed, 39 insertions, 19 deletions
diff --git a/src/vlibmemory/memory_client.c b/src/vlibmemory/memory_client.c
index f032ae77d19..0875a27c859 100644
--- a/src/vlibmemory/memory_client.c
+++ b/src/vlibmemory/memory_client.c
@@ -44,17 +44,6 @@
#include <vlibmemory/vl_memory_api_h.h>
#undef vl_printfun
-typedef struct
-{
- u8 rx_thread_jmpbuf_valid;
- u8 connected_to_vlib;
- jmp_buf rx_thread_jmpbuf;
- pthread_t rx_thread_handle;
- /* Plugin message base lookup scheme */
- volatile u8 first_msg_id_reply_ready;
- u16 first_msg_id_reply;
-} memory_client_main_t;
-
memory_client_main_t memory_client_main;
static void *
@@ -390,7 +379,8 @@ vl_mem_client_is_connected (void)
static int
connect_to_vlib_internal (const char *svm_name,
const char *client_name,
- int rx_queue_size, int want_pthread, int do_map)
+ int rx_queue_size, void *(*thread_fn) (void *),
+ int do_map)
{
int rv = 0;
memory_client_main_t *mm = &memory_client_main;
@@ -410,10 +400,10 @@ connect_to_vlib_internal (const char *svm_name,
/* Start the rx queue thread */
- if (want_pthread)
+ if (thread_fn)
{
rv = pthread_create (&mm->rx_thread_handle,
- NULL /*attr */ , rx_thread_fn, 0);
+ NULL /*attr */ , thread_fn, 0);
if (rv)
clib_warning ("pthread_create returned %d", rv);
}
@@ -427,8 +417,7 @@ vl_client_connect_to_vlib (const char *svm_name,
const char *client_name, int rx_queue_size)
{
return connect_to_vlib_internal (svm_name, client_name, rx_queue_size,
- 1 /* want pthread */ ,
- 1 /* do map */ );
+ rx_thread_fn, 1 /* do map */ );
}
int
@@ -437,7 +426,7 @@ vl_client_connect_to_vlib_no_rx_pthread (const char *svm_name,
int rx_queue_size)
{
return connect_to_vlib_internal (svm_name, client_name, rx_queue_size,
- 0 /* want pthread */ ,
+ 0 /* no rx_thread_fn */ ,
1 /* do map */ );
}
@@ -446,8 +435,7 @@ vl_client_connect_to_vlib_no_map (const char *svm_name,
const char *client_name, int rx_queue_size)
{
return connect_to_vlib_internal (svm_name, client_name, rx_queue_size,
- 1 /* want pthread */ ,
- 0 /* dont map */ );
+ rx_thread_fn, 0 /* dont map */ );
}
int
@@ -460,6 +448,17 @@ vl_client_connect_to_vlib_no_rx_pthread_no_map (const char *svm_name,
0 /* dont map */ );
}
+int
+vl_client_connect_to_vlib_thread_fn (const char *svm_name,
+ const char *client_name,
+ int rx_queue_size,
+ void *(*thread_fn) (void *))
+{
+ return connect_to_vlib_internal (svm_name, client_name, rx_queue_size,
+ thread_fn, 1 /* do map */ );
+}
+
+
static void
disconnect_from_vlib_internal (u8 do_unmap)
{
diff --git a/src/vlibmemory/memory_client.h b/src/vlibmemory/memory_client.h
index 8400d963dcf..7ec72538bc9 100644
--- a/src/vlibmemory/memory_client.h
+++ b/src/vlibmemory/memory_client.h
@@ -19,6 +19,23 @@
#define SRC_VLIBMEMORY_MEMORY_CLIENT_H_
#include <vlibmemory/memory_shared.h>
+#include <setjmp.h>
+
+/*
+ * Exported so folks can code a working custom rx_pthread function
+ */
+typedef struct
+{
+ u8 rx_thread_jmpbuf_valid;
+ u8 connected_to_vlib;
+ jmp_buf rx_thread_jmpbuf;
+ pthread_t rx_thread_handle;
+ /* Plugin message base lookup scheme */
+ volatile u8 first_msg_id_reply_ready;
+ u16 first_msg_id_reply;
+} memory_client_main_t;
+
+extern memory_client_main_t memory_client_main;
int vl_client_connect (const char *name, int ctx_quota, int input_queue_size);
void vl_client_send_disconnect (u8 do_cleanup);
@@ -29,6 +46,10 @@ void vl_client_disconnect_from_vlib (void);
void vl_client_disconnect_from_vlib_no_unmap (void);
int vl_client_connect_to_vlib (const char *svm_name, const char *client_name,
int rx_queue_size);
+int vl_client_connect_to_vlib_thread_fn (const char *svm_name,
+ const char *client_name,
+ int rx_queue_size,
+ void *(*)(void *));
int vl_client_connect_to_vlib_no_rx_pthread (const char *svm_name,
const char *client_name,
int rx_queue_size);