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Adopt lambda-style perform_on_main in expand.cpp

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Allows eliminating find_job_data_t
This commit is contained in:
ridiculousfish 2017-01-23 10:44:36 -08:00
parent e0abfee370
commit fe8e99138d
1 changed files with 17 additions and 26 deletions
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43
src/expand.cpp
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@ -429,25 +429,14 @@ bool process_iterator_t::next_process(wcstring *out_str, pid_t *out_pid) {
#endif
// Helper function to do a job search.
struct find_job_data_t {
const wchar_t *proc; // the process to search for - possibly numeric, possibly a name
expand_flags_t flags;
std::vector<completion_t> *completions;
};
/// The following function is invoked on the main thread, because the job list is not thread safe.
/// It should search the job list for something matching the given proc, and then return 1 to stop
/// the search, 0 to continue it.
static int find_job(const struct find_job_data_t *info) {
/// It should search the job list for something matching the given proc, and then return true to stop
/// the search, false to continue it.
static bool find_job(const wchar_t *proc, expand_flags_t flags, std::vector<completion_t> *completions) {
ASSERT_IS_MAIN_THREAD();
const wchar_t *const proc = info->proc;
const expand_flags_t flags = info->flags;
std::vector<completion_t> &completions = *info->completions;
const job_t *j;
int found = 0;
bool found = false;
// If we are not doing tab completion, we first check for the single '%' character, because an
// empty string will pass the numeric check below. But if we are doing tab completion, we want
// all of the job IDs as completion options, not just the last job backgrounded, so we pass this
@ -457,13 +446,13 @@ static int find_job(const struct find_job_data_t *info) {
job_iterator_t jobs;
while ((j = jobs.next())) {
if (!j->command_is_empty()) {
append_completion(&completions, to_string<long>(j->pgid));
append_completion(completions, to_string<long>(j->pgid));
break;
}
}
// You don't *really* want to flip a coin between killing the last process backgrounded and
// all processes, do you? Let's not try other match methods with the solo '%' syntax.
found = 1;
found = true;
} else if (iswnumeric(proc)) {
// This is a numeric job string, like '%2'.
if (flags & EXPAND_FOR_COMPLETIONS) {
@ -476,7 +465,7 @@ static int find_job(const struct find_job_data_t *info) {
if (wcsncmp(proc, jid, wcslen(proc)) == 0) {
wcstring desc_buff = format_string(COMPLETE_JOB_DESC_VAL, j->command_wcstr());
append_completion(&completions, jid + wcslen(proc), desc_buff, 0);
append_completion(completions, jid + wcslen(proc), desc_buff, 0);
}
}
} else {
@ -484,13 +473,13 @@ static int find_job(const struct find_job_data_t *info) {
if (!errno && jid > 0) {
j = job_get(jid);
if ((j != 0) && (j->command_wcstr() != 0) && (!j->command_is_empty())) {
append_completion(&completions, to_string<long>(j->pgid));
append_completion(completions, to_string<long>(j->pgid));
}
}
}
// Stop here so you can't match a random process name when you're just trying to use job
// control.
found = 1;
found = true;
}
if (found) {
@ -504,10 +493,10 @@ static int find_job(const struct find_job_data_t *info) {
size_t offset;
if (match_pid(j->command(), proc, &offset)) {
if (flags & EXPAND_FOR_COMPLETIONS) {
append_completion(&completions, j->command_wcstr() + offset + wcslen(proc),
append_completion(completions, j->command_wcstr() + offset + wcslen(proc),
COMPLETE_JOB_DESC, 0);
} else {
append_completion(&completions, to_string<long>(j->pgid));
append_completion(completions, to_string<long>(j->pgid));
found = 1;
}
}
@ -526,10 +515,10 @@ static int find_job(const struct find_job_data_t *info) {
size_t offset;
if (match_pid(p->actual_cmd, proc, &offset)) {
if (flags & EXPAND_FOR_COMPLETIONS) {
append_completion(&completions, wcstring(p->actual_cmd, offset + wcslen(proc)),
append_completion(completions, wcstring(p->actual_cmd, offset + wcslen(proc)),
COMPLETE_CHILD_PROCESS_DESC, 0);
} else {
append_completion(&completions, to_string<long>(p->pid), L"", 0);
append_completion(completions, to_string<long>(p->pid), L"", 0);
found = 1;
}
}
@ -551,8 +540,10 @@ static int find_job(const struct find_job_data_t *info) {
static void find_process(const wchar_t *proc, expand_flags_t flags,
std::vector<completion_t> *out) {
if (!(flags & EXPAND_SKIP_JOBS)) {
const struct find_job_data_t data = {proc, flags, out};
int found = iothread_perform_on_main(find_job, &data);
bool found = false;
iothread_perform_on_main([&](){
found = find_job(proc, flags, out);
});
if (found) {
return;
}