define callback function types; allow pa_signal_done() to be called even without prior pa_signal_init()

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/glitch-free@2377 fefdeb5f-60dc-0310-8127-8f9354f1896f

2 files changed, 21 insertions, 18 deletions

diff --git a/src/pulse/mainloop-signal.c b/src/pulse/mainloop-signal.c
index 8ad465bd..91c6bf6d 100644
--- a/src/pulse/mainloop-signal.c
+++ b/src/pulse/mainloop-signal.c
@@ -3,7 +3,7 @@
 /***
   This file is part of PulseAudio.
 
-  Copyright 2004-2006 Lennart Poettering
+  Copyright 2004-2008 Lennart Poettering
   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
 
   PulseAudio is free software; you can redistribute it and/or modify
@@ -55,9 +55,9 @@ struct pa_signal_event {
 #else
     void (*saved_handler)(int sig);
 #endif
-    void (*callback) (pa_mainloop_api*a, pa_signal_event *e, int sig, void *userdata);
     void *userdata;
-    void (*destroy_callback) (pa_mainloop_api*a, pa_signal_event*e, void *userdata);
+    pa_signal_cb_t callback;
+    pa_signal_destroy_cb_t destroy_callback;
     pa_signal_event *previous, *next;
 };
 
@@ -74,6 +74,7 @@ static void signal_handler(int sig) {
 #ifndef HAVE_SIGACTION
     signal(sig, signal_handler);
 #endif
+
     pa_write(signal_pipe[1], &sig, sizeof(sig), NULL);
 
     errno = saved_errno;
@@ -142,23 +143,21 @@ int pa_signal_init(pa_mainloop_api *a) {
 }
 
 void pa_signal_done(void) {
-    pa_assert(api);
-    pa_assert(signal_pipe[0] >= 0);
-    pa_assert(signal_pipe[1] >= 0);
-    pa_assert(io_event);
-
     while (signals)
         pa_signal_free(signals);
 
-    api->io_free(io_event);
-    io_event = NULL;
+    if (io_event) {
+        pa_assert(api);
+        api->io_free(io_event);
+        io_event = NULL;
+    }
 
     pa_close_pipe(signal_pipe);
 
     api = NULL;
 }
 
-pa_signal_event* pa_signal_new(int sig, void (*_callback) (pa_mainloop_api *api, pa_signal_event*e, int sig, void *userdata), void *userdata) {
+pa_signal_event* pa_signal_new(int sig, pa_signal_cb_t _callback, void *userdata) {
     pa_signal_event *e = NULL;
 
 #ifdef HAVE_SIGACTION
@@ -223,7 +222,7 @@ void pa_signal_free(pa_signal_event *e) {
     pa_xfree(e);
 }
 
-void pa_signal_set_destroy(pa_signal_event *e, void (*_callback) (pa_mainloop_api *api, pa_signal_event*e, void *userdata)) {
+void pa_signal_set_destroy(pa_signal_event *e, pa_signal_destroy_cb_t _callback) {
     pa_assert(e);
 
     e->destroy_callback = _callback;
diff --git a/src/pulse/mainloop-signal.h b/src/pulse/mainloop-signal.h
index 50aa99ce..bdb0f738 100644
--- a/src/pulse/mainloop-signal.h
+++ b/src/pulse/mainloop-signal.h
@@ -6,7 +6,7 @@
 /***
   This file is part of PulseAudio.
 
-  Copyright 2004-2006 Lennart Poettering
+  Copyright 2004-2008 Lennart Poettering
   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
 
   PulseAudio is free software; you can redistribute it and/or modify
@@ -39,23 +39,27 @@ PA_C_DECL_BEGIN
  * signals. However, you may hook signal support into an abstract main loop via the routines defined herein.
  */
 
+/** An opaque UNIX signal event source object */
+typedef struct pa_signal_event pa_signal_event;
+
+typedef void (*pa_signal_cb_t) (pa_mainloop_api *api, pa_signal_event*e, int sig, void *userdata);
+
+typedef void (*pa_signal_destroy_cb_t) (pa_mainloop_api *api, pa_signal_event*e, void *userdata);
+
 /** Initialize the UNIX signal subsystem and bind it to the specified main loop */
 int pa_signal_init(pa_mainloop_api *api);
 
 /** Cleanup the signal subsystem */
 void pa_signal_done(void);
 
-/** An opaque UNIX signal event source object */
-typedef struct pa_signal_event pa_signal_event;
-
 /** Create a new UNIX signal event source object */
-pa_signal_event* pa_signal_new(int sig, void (*callback) (pa_mainloop_api *api, pa_signal_event*e, int sig, void *userdata), void *userdata);
+pa_signal_event* pa_signal_new(int sig, pa_signal_cb_t callback, void *userdata);
 
 /** Free a UNIX signal event source object */
 void pa_signal_free(pa_signal_event *e);
 
 /** Set a function that is called when the signal event source is destroyed. Use this to free the userdata argument if required */
-void pa_signal_set_destroy(pa_signal_event *e, void (*callback) (pa_mainloop_api *api, pa_signal_event*e, void *userdata));
+void pa_signal_set_destroy(pa_signal_event *e, pa_signal_destroy_cb_t callback);
 
 PA_C_DECL_END