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| author | Philipp Stephani <phst@google.com> | 2021-01-23 18:39:20 +0100 |
|---|---|---|
| committer | Philipp Stephani <phst@google.com> | 2021-01-23 18:39:20 +0100 |
| commit | 59e9ec72442d264a3e08c9886ad3b49fa8dc9f37 (patch) | |
| tree | efd5349cbd8d4ef2d1220f7622bd21135e57a84f /src | |
| parent | aeff424c555da7e80775482db84eecef10286fc3 (diff) | |
| download | emacs-59e9ec72442d264a3e08c9886ad3b49fa8dc9f37.tar.gz | |
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.
Diffstat (limited to 'src')
| -rw-r--r-- | src/process.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/process.c b/src/process.c index 9b1de19f0ae..8abdcd4f0c1 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 |