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async: first synchronous write may succeed partially

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When trying to write (to e.g. the slave, or to a clipboard receiver),
we first try to send the data synchronously, and only if that fails do
we switch to asynchronous mode.

However, the first synchronous may (in fact, is likely to) succeed
partially.
This commit is contained in:
Daniel Eklöf 2019-11-28 19:20:25 +01:00
parent c5602fde96
commit 903581b7eb
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GPG key ID: 5BBD4992C116573F
2 changed files with 9 additions and 6 deletions
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10
selection.c
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@ -384,13 +384,14 @@ send(void *data, struct wl_data_source *wl_data_source, const char *mime_type,
return;
}
switch (async_write(fd, selection, len, &(size_t){0})) {
size_t async_idx = 0;
switch (async_write(fd, selection, len, &async_idx)) {
case ASYNC_WRITE_REMAIN: {
struct clipboard_send *ctx = malloc(sizeof(*ctx));
*ctx = (struct clipboard_send) {
.data = strdup(selection),
.len = len,
.idx = 0,
.idx = async_idx,
};
if (fdm_add(wayl->fdm, fd, EPOLLOUT, &fdm_send, ctx))
@ -475,13 +476,14 @@ primary_send(void *data,
return;
}
switch (async_write(fd, selection, len, &(size_t){0})) {
size_t async_idx = 0;
switch (async_write(fd, selection, len, &async_idx)) {
case ASYNC_WRITE_REMAIN: {
struct clipboard_send *ctx = malloc(sizeof(*ctx));
*ctx = (struct clipboard_send) {
.data = strdup(selection),
.len = len,
.idx = 0,
.idx = async_idx,
};
if (fdm_add(wayl->fdm, fd, EPOLLOUT, &fdm_send, ctx))