Enhanced debugging by making DEBUG() print out the cothread ID as well as the process ID. cothread_getcurrent return...

Original commit message from CVS:
Enhanced debugging by making DEBUG() print out the cothread ID as well as
the process ID.  cothread_getcurrent returns the current cothread ID, or
-1 if cothreads aren't set up in this process context.

gst/cothreads.c

@@ -155,7 +155,7 @@ cothread_init (void)
 cothread_state*
 cothread_main(cothread_context *ctx) 
 {
-  DEBUG(stderr,"returning %p, the 0th cothread\n",ctx->threads[0]);
+  DEBUG("returning %p, the 0th cothread\n",ctx->threads[0]);
   return ctx->threads[0];
 }
 
@@ -173,7 +173,18 @@ cothread_stub (void)
   thread->pc = 0;
   thread->sp = thread->top_sp;
   DEBUG("cothread: cothread_stub() exit\n");
-  //printf("uh, yeah, we shouldn't be here, but we should deal anyway\n");
+//  printf("uh, yeah, we shouldn't be here, but we should deal anyway\n");
+}
+
+/**
+ * cothread_getcurrent:
+ *
+ * Returns: the current cothread id
+ */
+int cothread_getcurrent(void) {
+  cothread_context *ctx = pthread_getspecific(_cothread_key);
+  if (!ctx) return -1;
+  return ctx->current;
 }
 
 /**

gst/cothreads.h

@@ -65,6 +65,7 @@ cothread_context*		cothread_init();
 cothread_state*			cothread_create		(cothread_context *ctx);
 void 				cothread_setfunc	(cothread_state *thread, cothread_func func, 
 						         int argc, char **argv);
+int				cothread_getcurrent	(void);
 void 				cothread_switch		(cothread_state *thread);
 void 				cothread_set_data	(cothread_state *thread, gchar *key, gpointer data);
 gpointer 			cothread_get_data 	(cothread_state *thread, gchar *key);

gst/gst.h

@@ -48,6 +48,8 @@
 
 #include <gst/gsttee.h>
 
+#include <gst/cothreads.h>
+
 /* initialize GST */
 void gst_init(int *argc,char **argv[]);
 
@@ -57,7 +59,7 @@ void gst_main_quit	(void);
 /* debugging */
 #ifndef DEBUG
 #ifdef DEBUG_ENABLED
-#define DEBUG(format, args...) g_print("DEBUG:(%d) " format, getpid() , ##args)
+#define DEBUG(format, args...) g_print("DEBUG:(%d:%d) " format, getpid() , cothread_getcurrent() , ##args)
 #else
 #define DEBUG(format, args...)
 #endif