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fix a bug of defunct process by adding a SIGCHLD handler.

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This commit is contained in:
yytdfc 2017-08-04 11:14:34 +08:00
parent a23c1033df
commit 814be9e635
1 changed files with 38 additions and 32 deletions
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6
subprocess.hpp
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@ -42,6 +42,7 @@ Documentation for C++ subprocessing libraray.
#include <cassert> #include <cassert>
#include <cstring> #include <cstring>
#include <cstdio> #include <cstdio>
#include <csignal>
#include <future> #include <future>
#include <vector> #include <vector>
#include <sstream> #include <sstream>
@ -1150,6 +1151,11 @@ void Popen::execute_process() throw (CalledProcessError, OSError)
} }
exe_name_ = vargs_[0]; exe_name_ = vargs_[0];
std::signal(SIGCHLD, [](int sig){
int status;
waitpid(-1, &status, WNOHANG);
});
child_pid_ = fork(); child_pid_ = fork();
if (child_pid_ < 0) { if (child_pid_ < 0) {