citrun

commit f8ef48e5010f9c6d42fa0cf9a695386a5f3c48b9
parent 31178cc37868a70e5a3bcef8d57e9c73a5730911
Author: Kyle Milz <kyle@0x30.net>
Date:   Thu, 30 Jun 2016 22:05:57 -0600

lib: fork a viewer if CITRUN_SOCKET not set and default path doesn't exist

Diffstat:
M
lib/runtime.c
 | 
23
+++++++++++++++++++++--

1 file changed, 21 insertions(+), 2 deletions(-)
diff --git a/lib/runtime.c b/lib/runtime.c
@@ -4,7 +4,7 @@
 #include <pthread.h>		/* pthread_create */
 #include <stdlib.h>		/* getenv */
 #include <string.h>		/* strlcpy */
-#include <unistd.h>		/* getpid, getppid, getpgrp, read, write */
+#include <unistd.h>		/* access, get{pid,ppid,pgrp}, read, write */
 
 #include <sys/socket.h>		/* socket */
 #include <sys/un.h>		/* sockaddr_un */
@@ -174,6 +174,20 @@ send_dynamic(int fd)
 		warnx("tu chain is longer than before");
 }
 
+static void
+fork_viewer()
+{
+	pid_t 		 pid;
+
+	pid = fork();
+	if (pid < 0)
+		err(1, "fork");
+	else if (pid == 0)
+		execlp("citrun-gl", "citrun-gl", NULL);
+	else
+		warnx("socket not found, forking viewer");
+}
+
 /*
  * Relays line count data over a Unix domain socket.
  */
@@ -188,9 +202,14 @@ relay_thread(void *arg)
 	if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
 		err(1, "socket");
 
-	if ((viewer_sock = getenv("CITRUN_SOCKET")) == NULL)
+	if ((viewer_sock = getenv("CITRUN_SOCKET")) == NULL) {
 		viewer_sock = "/tmp/citrun-gl.socket";
 
+		/* Fork a viewer if the default socket path doesn't exist */
+		if (access(viewer_sock, F_OK) < 0)
+			fork_viewer();
+	}
+
 	memset(&addr, 0, sizeof(addr));
 	addr.sun_family = AF_UNIX;
 	strlcpy(addr.sun_path, viewer_sock, sizeof(addr.sun_path));