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remove unneeded preexec function option from cpp-subprocess

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We don't seem to ever need this, so remove it.
This commit is contained in:
Sebastian Falbesoner 2024-04-12 01:48:08 +02:00
parent 633e45b2e2
commit cececad7b2
1 changed files with 0 additions and 50 deletions
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50
src/util/subprocess.hpp
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@ -845,44 +845,6 @@ struct error
int wr_ch_ = -1;
};
// Impoverished, meager, needy, truly needy
// version of type erasure to store function pointers
// needed to provide the functionality of preexec_func
// ATTN: Can be used only to execute functions with no
// arguments and returning void.
// Could have used more efficient methods, ofcourse, but
// that won't yield me the consistent syntax which I am
// aiming for. If you know, then please do let me know.
class preexec_func
{
public:
preexec_func() {}
template <typename Func>
explicit preexec_func(Func f): holder_(new FuncHolder<Func>(std::move(f)))
{}
void operator()() {
(*holder_)();
}
private:
struct HolderBase {
virtual void operator()() const = 0;
virtual ~HolderBase(){};
};
template <typename T>
struct FuncHolder: HolderBase {
FuncHolder(T func): func_(std::move(func)) {}
void operator()() const override { func_(); }
// The function pointer/reference
T func_;
};
std::unique_ptr<HolderBase> holder_ = nullptr;
};
// ~~~~ End Popen Args ~~~~
@ -990,7 +952,6 @@ struct ArgumentDeducer
void set_option(output&& out);
void set_option(error&& err);
void set_option(close_fds&& cfds);
void set_option(preexec_func&& prefunc);
void set_option(session_leader&& sleader);
private:
@ -1323,13 +1284,11 @@ private:
bool defer_process_start_ = false;
bool close_fds_ = false;
bool has_preexec_fn_ = false;
bool session_leader_ = false;
std::string exe_name_;
std::string cwd_;
env_map_t env_;
preexec_func preexec_fn_;
// Command in string format
std::string args_;
@ -1669,11 +1628,6 @@ namespace detail {
popen_->close_fds_ = cfds.close_all;
}
inline void ArgumentDeducer::set_option(preexec_func&& prefunc) {
popen_->preexec_fn_ = std::move(prefunc);
popen_->has_preexec_fn_ = true;
}
inline void Child::execute_child() {
#ifndef __USING_WINDOWS__
@ -1737,10 +1691,6 @@ namespace detail {
if (sys_ret == -1) throw OSError("chdir failed", errno);
}
if (parent_->has_preexec_fn_) {
parent_->preexec_fn_();
}
if (parent_->session_leader_) {
sys_ret = setsid();
if (sys_ret == -1) throw OSError("setsid failed", errno);