#include <vppinfra/format.h>
#include <pthread.h>
-typedef enum
-{
- SVM_FIFO_TAG_NOT_HELD = 0,
- SVM_FIFO_TAG_DEQUEUE,
- SVM_FIFO_TAG_ENQUEUE,
-} svm_lock_tag_t;
-
/** Out-of-order segment */
typedef struct
{
u32 prev; /**< Previous linked-list element pool index */
u32 start; /**< Start of segment, normalized*/
- u32 length; /**< Length of segment */
+ u32 length; /**< Length of segment */
} ooo_segment_t;
format_function_t format_ooo_segment;
#define OOO_SEGMENT_INVALID_INDEX ((u32)~0)
-typedef struct
+typedef struct _svm_fifo
{
volatile u32 cursize; /**< current fifo size */
u32 nitems;
CLIB_CACHE_LINE_ALIGN_MARK (end_cursize);
- volatile u8 has_event; /**< non-zero if deq event exists */
- u32 owner_pid;
+ volatile u32 has_event; /**< non-zero if deq event exists */
/* Backpointers */
- u32 server_session_index;
+ u32 master_session_index;
u32 client_session_index;
- u8 server_thread_index;
+ u8 master_thread_index;
u8 client_thread_index;
u32 segment_manager;
CLIB_CACHE_LINE_ALIGN_MARK (end_shared);
ooo_segment_t *ooo_segments; /**< Pool of ooo segments */
u32 ooos_list_head; /**< Head of out-of-order linked-list */
u32 ooos_newest; /**< Last segment to have been updated */
-
+ struct _svm_fifo *next; /**< next in freelist/active chain */
+ struct _svm_fifo *prev; /**< prev in active chain */
CLIB_CACHE_LINE_ALIGN_MARK (data);
} svm_fifo_t;
svm_fifo_unset_event (svm_fifo_t * f)
{
/* Probably doesn't need to be atomic. Still, better avoid surprises */
- __sync_lock_test_and_set (&f->has_event, 0);
+ __sync_lock_release (&f->has_event);
}
svm_fifo_t *svm_fifo_create (u32 data_size_in_bytes);
void svm_fifo_free (svm_fifo_t * f);
-int svm_fifo_enqueue_nowait (svm_fifo_t * f, int pid, u32 max_bytes,
+int svm_fifo_enqueue_nowait (svm_fifo_t * f, u32 max_bytes,
u8 * copy_from_here);
+int svm_fifo_enqueue_with_offset (svm_fifo_t * f, u32 offset,
+ u32 required_bytes, u8 * copy_from_here);
+int svm_fifo_dequeue_nowait (svm_fifo_t * f, u32 max_bytes, u8 * copy_here);
-int svm_fifo_enqueue_with_offset (svm_fifo_t * f, int pid,
- u32 offset, u32 required_bytes,
- u8 * copy_from_here);
-
-int svm_fifo_dequeue_nowait (svm_fifo_t * f, int pid, u32 max_bytes,
- u8 * copy_here);
-
-int svm_fifo_peek (svm_fifo_t * f, int pid, u32 offset, u32 max_bytes,
- u8 * copy_here);
-int svm_fifo_dequeue_drop (svm_fifo_t * f, int pid, u32 max_bytes);
+int svm_fifo_peek (svm_fifo_t * f, u32 offset, u32 max_bytes, u8 * copy_here);
+int svm_fifo_dequeue_drop (svm_fifo_t * f, u32 max_bytes);
u32 svm_fifo_number_ooo_segments (svm_fifo_t * f);
ooo_segment_t *svm_fifo_first_ooo_segment (svm_fifo_t * f);
+void svm_fifo_init_pointers (svm_fifo_t * f, u32 pointer);
format_function_t format_svm_fifo;