lib: remove global worker id variable

Update ThreadVars creation in lib mode to have the worker_id provided
by the user.

Ticket: #7240

examples/lib/custom/main.c

@@ -22,6 +22,8 @@
 #include "source-lib.h"
 #include "threadvars.h"
 
+static int worker_id = 1;
+
 /**
  * Suricata worker thread in library mode.
  * The functions should be wrapped in an API layer.
@@ -31,7 +33,7 @@ static void *SimpleWorker(void *arg)
     char *pcap_file = (char *)arg;
 
     /* Create worker. */
-    ThreadVars *tv = SCRunModeLibCreateThreadVars();
+    ThreadVars *tv = SCRunModeLibCreateThreadVars(worker_id++);
     if (!tv) {
         pthread_exit(NULL);
     }

src/runmode-lib.c

@@ -25,9 +25,6 @@
 #include "runmode-lib.h"
 #include "runmodes.h"
 #include "tm-threads.h"
-#include "util-device.h"
-
-static int g_thread_id = 0;
 
 /** \brief register runmodes for suricata as a library */
 void RunModeIdsLibRegister(void)
@@ -59,11 +56,11 @@ const char *RunModeLibGetDefaultMode(void)
     return "live";
 }
 
-ThreadVars *SCRunModeLibCreateThreadVars(void)
+ThreadVars *SCRunModeLibCreateThreadVars(int worker_id)
 {
     char tname[TM_THREAD_NAME_MAX];
     TmModule *tm_module = NULL;
-    snprintf(tname, sizeof(tname), "%s#%02d", thread_name_workers, ++g_thread_id);
+    snprintf(tname, sizeof(tname), "%s#%02d", thread_name_workers, worker_id);
 
     ThreadVars *tv = TmThreadCreatePacketHandler(
             tname, "packetpool", "packetpool", "packetpool", "packetpool", "lib");
@@ -142,7 +139,6 @@ void RunModeDestroyWorker(void *td)
     }
 
     tv->stream_pq = NULL;
-    --g_thread_id;
     SCLogDebug("%s ending", tv->name);
     TmThreadsSetFlag(tv, THV_CLOSED);
 }

src/runmode-lib.h

@@ -45,9 +45,11 @@ const char *RunModeLibGetDefaultMode(void);
  * Unlike other runmodes, this does not spawn a thread, as the threads
  * are controlled by the application using Suricata as a library.
  *
+ * \param worker_id an ID to give this ThreadVars instance
+ *
  * \return Pointer to allocated ThreadVars or NULL on failure
  */
-ThreadVars *SCRunModeLibCreateThreadVars(void);
+ThreadVars *SCRunModeLibCreateThreadVars(int worker_id);
 
 /** \brief start the "fake" worker.
  *