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api: configurable binary api client rx pthread fcn

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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
This commit is contained in:
Dave Barach
2019-11-14 08:03:48 -05:00
committed by Florin Coras
parent d14fccd6d5
commit 920180e5e0
2 changed files with 39 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
src/vlibmemory/memory_client.c
View File

@ -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;
@ -411,10 +401,10 @@ 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);
@ -435,8 +425,7 @@ 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
@ -445,7 +434,7 @@ 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 */ );
}
@ -454,8 +443,7 @@ 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
@ -468,6 +456,17 @@ 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)
{

21
src/vlibmemory/memory_client.h
View File

@ -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);