From df88846fa78ebe40f935e0486462af0fc0ea81e9 Mon Sep 17 00:00:00 2001
From: Andreas Monzner <andreas.monzner@multimedia-labs.de>
Date: Mon, 3 Apr 2006 10:47:52 +0000
Subject: [PATCH] add possibility to do things after thread start.. but before
 setting the thread to alive

---
 acinclude.m4          |  2 +-
 lib/base/filepush.cpp | 21 +++++++++++++++------
 lib/base/filepush.h   |  5 ++++-
 lib/base/thread.cpp   |  1 +
 lib/base/thread.h     |  1 +
 5 files changed, 22 insertions(+), 8 deletions(-)

diff --git a/acinclude.m4 b/acinclude.m4
index d1a5a04d..8999c441 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -247,7 +247,7 @@ AC_SUBST($1_LIBS)
 ])
 
 AC_DEFUN(_TUXBOX_APPS_LIB_PKGCONFIG_OPTIONAL,[
-PKG_CHECK_MODULES($1,$2,$3="yes",$3="no")
+PKG_CHECK_MODULES($1,$2,$3="no",$3="yes")
 if test "$$3" = "yes"; then
 	AC_DEFINE($3, 1, [$2 available])
 else
diff --git a/lib/base/filepush.cpp b/lib/base/filepush.cpp
index 8aed99fa..bbce531d 100644
--- a/lib/base/filepush.cpp
+++ b/lib/base/filepush.cpp
@@ -33,12 +33,6 @@ void eFilePushThread::thread()
 	eDebug("FILEPUSH THREAD START");
 		// this is a race. FIXME.
 	
-		/* we set the signal to not restart syscalls, so we can detect our signal. */
-	struct sigaction act;
-	act.sa_handler = signal_handler; // no, SIG_IGN doesn't do it. we want to receive the -EINTR
-	act.sa_flags = 0;
-	sigaction(SIGUSR1, &act, 0);
-	
 	dest_pos = lseek(m_fd_dest, 0, SEEK_CUR);
 	source_pos = m_raw_source.lseek(0, SEEK_CUR);
 	
@@ -164,6 +158,21 @@ int eFilePushThread::start(const char *filename, int fd_dest)
 	return 0;
 }
 
+void eFilePushThread::installSigUSR1Handler()
+{
+		/* we set the signal to not restart syscalls, so we can detect our signal. */
+	struct sigaction act;
+	act.sa_handler = signal_handler; // no, SIG_IGN doesn't do it. we want to receive the -EINTR
+	act.sa_flags = 0;
+	sigaction(SIGUSR1, &act, 0);
+}
+
+// called from thread before alive is set to 1
+void eFilePushThread::before_set_thread_alive()
+{
+	installSigUSR1Handler();
+}
+
 void eFilePushThread::stop()
 {
 	if (!thread_running()) /* FIXME: races */
diff --git a/lib/base/filepush.h b/lib/base/filepush.h
index 25257880..35671cd6 100644
--- a/lib/base/filepush.h
+++ b/lib/base/filepush.h
@@ -35,7 +35,10 @@ public:
 	
 	enum { evtEOF, evtReadError, evtWriteError, evtUser };
 	Signal1<void,int> m_event;
-	
+
+	void installSigUSR1Handler();
+	void before_set_thread_alive();
+
 		/* you can send private events if you want */
 	void sendEvent(int evt);
 protected:
diff --git a/lib/base/thread.cpp b/lib/base/thread.cpp
index 7a43a7bb..b64ba136 100644
--- a/lib/base/thread.cpp
+++ b/lib/base/thread.cpp
@@ -15,6 +15,7 @@ void eThread::thread_completed(void *ptr)
 void *eThread::wrapper(void *ptr)
 {
 	eThread *p = (eThread*)ptr;
+	p->before_set_thread_alive();
 	p->alive=1;
 	pthread_cleanup_push( thread_completed, (void*)p );
 	p->thread();
diff --git a/lib/base/thread.h b/lib/base/thread.h
index f6c750af..94cdd47e 100644
--- a/lib/base/thread.h
+++ b/lib/base/thread.h
@@ -18,6 +18,7 @@ public:
 	void run(int prio=0, int policy=0);
 
 	virtual void thread()=0;
+	virtual void before_set_thread_alive() { }
 	virtual void thread_finished() { }
 	void sendSignal(int sig);
 
-- 
2.30.2