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channel: check for existance before trying to set key

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This avoids an error message in async context, where it is not safe.
This commit is contained in:
Björn Linse
2017-11-27 13:01:49 +01:00
parent aa951b1489
commit 308dd53783
4 changed files with 44 additions and 7 deletions
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23
src/nvim/channel.c
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@@ -599,6 +599,7 @@ static void on_stdio_input(Stream *stream, RBuffer *buf, size_t count,
on_channel_output(stream, chan, buf, count, eof, &chan->on_stdout, "stdin");
}
/// @param type must have static lifetime
static void on_channel_output(Stream *stream, Channel *chan, RBuffer *buf,
size_t count, bool eof, CallbackReader *reader,
const char *type)
@@ -613,14 +614,20 @@ static void on_channel_output(Stream *stream, Channel *chan, RBuffer *buf,
if (reader->cb.type != kCallbackNone) {
process_channel_event(chan, &reader->cb, type, reader->buffer.ga_data,
(size_t)reader->buffer.ga_len, 0);
ga_clear(&reader->buffer);
} else if (reader->self) {
list_T *data = buffer_to_tv_list(reader->buffer.ga_data,
(size_t)reader->buffer.ga_len);
tv_dict_add_list(reader->self, type, strlen(type), data);
if (tv_dict_find(reader->self, type, -1) == NULL) {
list_T *data = buffer_to_tv_list(reader->buffer.ga_data,
(size_t)reader->buffer.ga_len);
tv_dict_add_list(reader->self, type, strlen(type), data);
} else {
// can't display error message now, defer it.
channel_incref(chan);
multiqueue_put(chan->events, on_buffered_error, 2, chan, type);
}
} else {
abort();
}
ga_clear(&reader->buffer);
} else if (reader->cb.type != kCallbackNone) {
process_channel_event(chan, &reader->cb, type, ptr, 0, 0);
}
@@ -641,6 +648,14 @@ static void on_channel_output(Stream *stream, Channel *chan, RBuffer *buf,
}
}
static void on_buffered_error(void **args)
{
Channel *chan = (Channel *)args[0];
const char *stream = (const char *)args[1];
EMSG3(_(e_streamkey), stream, chan->id);
channel_decref(chan);
}
static void channel_process_exit_cb(Process *proc, int status, void *data)
{
Channel *chan = data;