master 59e9ec7 1/4: Add a FIXME comment to improve the SIGCHLD race condition handling.

[Philipp Stephani]

branch: master
commit 59e9ec72442d264a3e08c9886ad3b49fa8dc9f37
Author: Philipp Stephani <phst@google.com>
Commit: Philipp Stephani <phst@google.com>

    Add a FIXME comment to improve the SIGCHLD race condition handling.
    
    * src/process.c: Add FIXME comment describing how we could avoid the
    self-pipe on modern Unix-like systems.
---
 src/process.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/process.c b/src/process.c
index 9b1de19..8abdcd4 100644
--- a/src/process.c
+++ b/src/process.c
@@ -7164,6 +7164,11 @@ process has been transmitted to the serial port.  */)
    because that emulation delays the delivery of the simulated SIGCHLD
    until all the output from the subprocess has been consumed.  */
 
+/* FIXME: On Unix-like systems that have a proper 'pselect'
+   (HAVE_PSELECT), we should block SIGCHLD in
+   'wait_reading_process_output' and pass a non-NULL signal mask to
+   'pselect' to avoid the need for the self-pipe.  */
+
 /* Set up `child_signal_read_fd' and `child_signal_write_fd'.  */
 
 static void