add function sf_synchronize_counter_wait

src/sf_func.h

@@ -19,6 +19,7 @@
 #define _SF_FUNC_H
 
 #include "fastcommon/pthread_func.h"
+#include "fastcommon/fc_atomic.h"
 #include "sf_types.h"
 #include "sf_global.h"
 
@@ -71,9 +72,19 @@ static inline void sf_binlog_buffer_destroy(SFBinlogBuffer *buffer)
 
 static inline int sf_synchronize_ctx_init(SFSynchronizeContext *sctx)
 {
+    sctx->waiting_count = 0;
     return init_pthread_lock_cond_pair(&sctx->lcp);
 }
 
+static inline void sf_synchronize_counter_wait(SFSynchronizeContext *sctx)
+{
+    PTHREAD_MUTEX_LOCK(&sctx->lcp.lock);
+    while (FC_ATOMIC_GET(sctx->waiting_count) != 0) {
+        pthread_cond_wait(&sctx->lcp.cond, &sctx->lcp.lock);
+    }
+    PTHREAD_MUTEX_UNLOCK(&sctx->lcp.lock);
+}
+
 #ifdef __cplusplus
 }
 #endif

src/sf_types.h

@@ -240,6 +240,7 @@ typedef struct sf_synchronize_context {
     union {
         bool done;
         int result;
+        volatile int waiting_count;
     };
 } SFSynchronizeContext;