utils: add new unforgiving utility functions

We'll be using pipes when waiting for I/O, and condition
variables at other times.

git-svn-id: https://svn.musicpd.org/mpd/trunk@7391 09075e82-0dd4-0310-85a5-a0d7c8717e4f

2 files changed, 30 insertions, 0 deletions

diff --git a/src/utils.c b/src/utils.c
index a311796c8..eedae22de 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -230,3 +230,27 @@ int set_nonblocking(int fd)
 	while ((ret = fcntl(fd, F_SETFL, flags)) < 0 && errno == EINTR) ;
 	return ret;
 }
+
+void init_async_pipe(int file_des[2])
+{
+	if (pipe(file_des) < 0)
+		FATAL("Couldn't open pipe: %s", strerror(errno));
+	if (set_nonblocking(file_des[0]) < 0)
+		FATAL("Couldn't set non-blocking I/O: %s\n", strerror(errno));
+	if (set_nonblocking(file_des[1]) < 0)
+		FATAL("Couldn't set non-blocking I/O: %s\n", strerror(errno));
+}
+
+void xpthread_mutex_destroy(pthread_mutex_t *mutex)
+{
+	int err;
+	if ((err = pthread_mutex_destroy(mutex)))
+		FATAL("failed to destroy mutex: %s\n", strerror(err));
+}
+
+void xpthread_cond_destroy(pthread_cond_t *cond)
+{
+	int err;
+	if ((err = pthread_cond_destroy(cond)))
+		FATAL("failed to destroy cond: %s\n", strerror(err));
+}
diff --git a/src/utils.h b/src/utils.h
index 0b6763a05..eb16e87bc 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -80,4 +80,10 @@ char *parsePath(char *path);
 
 int set_nonblocking(int fd);
 
+void init_async_pipe(int file_des[2]);
+
+void xpthread_mutex_destroy(pthread_mutex_t *mutex);
+
+void xpthread_cond_destroy(pthread_cond_t *cond);
+
 #endif