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SIGCHLD

This commit is contained in:
Jan Steemann 2014-10-13 12:32:22 +02:00
parent 294d89c5e3
commit 41ae9c8ea7
1 changed files with 21 additions and 1 deletions
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22
lib/Basics/process-utils.cpp
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@ -220,6 +220,15 @@ static bool CreatePipes (int* pipe_server_to_child,
return true;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief handler for SIGCHLD
////////////////////////////////////////////////////////////////////////////////
static void handleSigchld (int sig) {
// intentionally do nothing here
// we'll use waitpid() for reaping children later
}
////////////////////////////////////////////////////////////////////////////////
/// @brief starts external process
////////////////////////////////////////////////////////////////////////////////
@ -1265,7 +1274,7 @@ bool TRI_KillExternalProcess (TRI_external_id_t pid) {
////////////////////////////////////////////////////////////////////////////////
void TRI_InitialiseProcess (int argc, char* argv[]) {
if (ProcessName != 0) {
if (ProcessName != nullptr) {
return;
}
@ -1275,6 +1284,17 @@ void TRI_InitialiseProcess (int argc, char* argv[]) {
TRI_InitVectorPointer(&ExternalProcesses, TRI_CORE_MEM_ZONE);
TRI_InitMutex(&ExternalProcessesLock);
#ifndef WIN32
// initialise a signal handler for SIGCHLD
struct sigaction sa;
sa.sa_handler = &handleSigchld;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
if (sigaction(SIGCHLD, &sa, 0) == -1) {
// installation of signal handler failed
}
#endif
}
////////////////////////////////////////////////////////////////////////////////