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Fixed a race condition in process status checking.

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This commit is contained in:
Thulinma 2013-06-10 15:18:34 +02:00
parent e2e3f64d89
commit 10dc56c338
1 changed files with 4 additions and 2 deletions
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6
lib/procs.cpp
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@ -621,7 +621,9 @@ bool Util::Procs::isActive(std::string name){
std::map<pid_t, std::string>::iterator it; std::map<pid_t, std::string>::iterator it;
for (it = plist.begin(); it != plist.end(); it++){ for (it = plist.begin(); it != plist.end(); it++){
if (( *it).second == name){ if (( *it).second == name){
return true; if (kill(( *it).first, 0) == 0){
return true;
}
} }
} }
return false; return false;
@ -629,7 +631,7 @@ bool Util::Procs::isActive(std::string name){
/// Returns true if a process with this PID is currently active. /// Returns true if a process with this PID is currently active.
bool Util::Procs::isActive(pid_t name){ bool Util::Procs::isActive(pid_t name){
return (plist.count(name) == 1); return (plist.count(name) == 1) && (kill(name, 0) == 0);
} }
/// Gets PID for this named process, if active. /// Gets PID for this named process, if active.