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Remove run_as_keepalive

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Dead code, innit?
This commit is contained in:
Fabian Homborg 2019-02-04 17:11:34 +01:00
parent ddfad001eb
commit c7656e6622
2 changed files with 0 additions and 15 deletions
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12
src/postfork.cpp
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@ -406,15 +406,3 @@ bool do_builtin_io(const char *out, size_t outlen, const char *err, size_t errle
errno = saved_errno; errno = saved_errno;
return success; return success;
} }
void run_as_keepalive(pid_t parent_pid) {
// Run this process as a keepalive. In typical usage the parent process will kill us. However
// this may not happen if the parent process exits abruptly, either via kill or exec. What we do
// is poll our ppid() and exit when it differs from parent_pid. We can afford to do this with
// low frequency because in the great majority of cases, fish will kill(9) us.
for (;;) {
// Note sleep is async-safe.
if (sleep(1)) break;
if (getppid() != parent_pid) break;
}
}

3
src/postfork.h
View file

@ -48,9 +48,6 @@ bool do_builtin_io(const char *out, size_t outlen, const char *err, size_t errle
void safe_report_exec_error(int err, const char *actual_cmd, const char *const *argv, void safe_report_exec_error(int err, const char *actual_cmd, const char *const *argv,
const char *const *envv); const char *const *envv);
/// Runs the process as a keepalive, until the parent process given by parent_pid exits.
void run_as_keepalive(pid_t parent_pid);
#if FISH_USE_POSIX_SPAWN #if FISH_USE_POSIX_SPAWN
/// Initializes and fills in a posix_spawnattr_t; on success, the caller should destroy it via /// Initializes and fills in a posix_spawnattr_t; on success, the caller should destroy it via
/// posix_spawnattr_destroy. /// posix_spawnattr_destroy.