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Switch signal table lookups to range-based for loops

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This commit is contained in:
ridiculousfish 2019-02-10 12:07:48 -08:00
parent fe73fbdb9a
commit 28e2cfeb4b
1 changed files with 18 additions and 24 deletions
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42
src/signal.cpp
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@ -32,7 +32,7 @@ struct lookup_entry {
static int block_count = 0;
/// Lookup table used to convert between signal names and signal ids, etc.
static const struct lookup_entry lookup[] = {
static const struct lookup_entry signal_table[] = {
#ifdef SIGHUP
{SIGHUP, L"SIGHUP", N_(L"Terminal hung up")},
#endif
@ -141,7 +141,7 @@ static const struct lookup_entry lookup[] = {
#ifdef SIGUNUSED
{SIGUNUSED, L"SIGUNUSED", N_(L"Unused signal")},
#endif
{0, NULL, NULL}};
};
/// Test if \c name is a string describing the signal named \c canonical.
static int match_signal_name(const wchar_t *canonical, const wchar_t *name) {
@ -151,9 +151,9 @@ static int match_signal_name(const wchar_t *canonical, const wchar_t *name) {
}
int wcs2sig(const wchar_t *str) {
for (int i = 0; lookup[i].desc; i++) {
if (match_signal_name(lookup[i].name, str)) {
return lookup[i].signal;
for (const auto &data : signal_table) {
if (match_signal_name(data.name, str)) {
return data.signal;
}
}
@ -163,11 +163,9 @@ int wcs2sig(const wchar_t *str) {
}
const wchar_t *sig2wcs(int sig) {
int i;
for (i = 0; lookup[i].desc; i++) {
if (lookup[i].signal == sig) {
return lookup[i].name;
for (const auto &data : signal_table) {
if (data.signal == sig) {
return data.name;
}
}
@ -175,11 +173,9 @@ const wchar_t *sig2wcs(int sig) {
}
const wchar_t *signal_get_desc(int sig) {
int i;
for (i = 0; lookup[i].desc; i++) {
if (lookup[i].signal == sig) {
return _(lookup[i].desc);
for (const auto &data : signal_table) {
if (data.signal == sig) {
return _(data.desc);
}
}
@ -255,20 +251,18 @@ static void handle_sigalarm(int sig, siginfo_t *info, void *context) {
}
void signal_reset_handlers() {
int i;
struct sigaction act;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
act.sa_handler = SIG_DFL;
for (i = 0; lookup[i].desc; i++) {
if (lookup[i].signal == SIGHUP) {
for (const auto &data : signal_table) {
if (data.signal == SIGHUP) {
struct sigaction oact;
sigaction(SIGHUP, NULL, &oact);
if (oact.sa_handler == SIG_IGN) continue;
}
sigaction(lookup[i].signal, &act, NULL);
sigaction(data.signal, &act, NULL);
}
}
@ -382,14 +376,14 @@ void signal_handle(int sig, int do_handle) {
void get_signals_with_handlers(sigset_t *set) {
sigemptyset(set);
for (int i = 0; lookup[i].desc; i++) {
for (const auto &data : signal_table) {
struct sigaction act = {};
sigaction(lookup[i].signal, NULL, &act);
sigaction(data.signal, NULL, &act);
// If SIGHUP is being ignored (e.g., because were were run via `nohup`) don't reset it.
// We don't special case other signals because if they're being ignored that shouldn't
// affect processes we spawn. They should get the default behavior for those signals.
if (lookup[i].signal == SIGHUP && act.sa_handler == SIG_IGN) continue;
if (act.sa_handler != SIG_DFL) sigaddset(set, lookup[i].signal);
if (data.signal == SIGHUP && act.sa_handler == SIG_IGN) continue;
if (act.sa_handler != SIG_DFL) sigaddset(set, data.signal);
}
}