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Null notifier to support fishd synchronization, so we can select the

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synchronization mechanism at runtime
This commit is contained in:
ridiculousfish
2014-05-14 15:03:44 +08:00
parent 30cfb3e795
commit a73b903df9
5 changed files with 41 additions and 15 deletions
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33
env_universal_common.cpp
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@@ -1900,8 +1900,18 @@ class universal_notifier_named_pipe_t : public universal_notifier_t
}
};
class universal_notifier_null_t : public universal_notifier_t
{
/* Does nothing! */
};
static universal_notifier_t::notifier_strategy_t fetch_default_strategy_from_environment()
{
if (! synchronizes_via_fishd())
{
return universal_notifier_t::strategy_null;
}
universal_notifier_t::notifier_strategy_t result = universal_notifier_t::strategy_default;
const struct
@@ -1983,6 +1993,9 @@ universal_notifier_t *universal_notifier_t::new_notifier_for_strategy(universal_
case strategy_named_pipe:
return new universal_notifier_named_pipe_t(test_path);
case strategy_null:
return new universal_notifier_null_t();
default:
fprintf(stderr, "Unsupported strategy %d\n", strat);
@@ -2022,3 +2035,23 @@ bool universal_notifier_t::notification_fd_became_readable(int fd)
{
return false;
}
static bool initialize_synchronizes_via_fishd()
{
const char *tmp = getenv("fish_use_fishd");
return tmp != NULL && from_string<bool>(tmp);
}
bool synchronizes_via_fishd()
{
if (program_name && ! wcscmp(program_name, L"fishd"))
{
/* fishd always wants to use fishd */
return true;
}
/* Note that in general we can't change this once it's been set, so we only load it once */
static bool result = initialize_synchronizes_via_fishd();
return result;
}