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Make self-restarting: fork child and wait (to deal with asserts).

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This commit is contained in:
ehouse 2006-10-11 02:06:20 +00:00
parent ddecfad8d1
commit 02833e4c17
1 changed files with 31 additions and 0 deletions
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31
relay/xwrelay.cpp
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@ -47,6 +47,7 @@
#include <assert.h> #include <assert.h>
#include <sys/select.h> #include <sys/select.h>
#include <stdarg.h> #include <stdarg.h>
#include <sys/wait.h>
#if defined(__FreeBSD__) #if defined(__FreeBSD__)
# if (OSVERSION > 500000) # if (OSVERSION > 500000)
@ -451,6 +452,20 @@ SIGINT_handler( int sig )
shutdown(); shutdown();
} }
static void
printWhy( int status )
{
if ( WIFEXITED(status) ) {
logf( XW_LOGINFO, "why: exited" );
} else if ( WIFSIGNALED(status) ) {
logf( XW_LOGINFO, "why: signaled" );
} else if ( WCOREDUMP(status) ) {
logf( XW_LOGINFO, "why: core" );
} else if ( WIFSTOPPED(status) ) {
logf( XW_LOGINFO, "why: traced" );
}
} /* printWhy */
int main( int argc, char** argv ) int main( int argc, char** argv )
{ {
int port = 0; int port = 0;
@ -525,6 +540,22 @@ int main( int argc, char** argv )
PermID::SetServerName( serverName ); PermID::SetServerName( serverName );
PermID::SetIDFileName( idFileName ); PermID::SetIDFileName( idFileName );
/* loop forever, relaunching children as they die. */
for ( ; ; ) {
pid_t pid = fork();
if ( pid == 0 ) { /* child */
break;
} else if ( pid > 0 ) {
int status;
logf( XW_LOGINFO, "parent waiting on child pid=%d", pid );
waitpid( pid, &status, 0 );
printWhy( status );
sleep( 45 ); /* give time to close sockets? */
} else {
logf( XW_LOGERROR, "fork() => %s", strerror(errno) );
}
}
g_listener = make_socket( INADDR_ANY, port ); g_listener = make_socket( INADDR_ANY, port );
if ( g_listener == -1 ) { if ( g_listener == -1 ) {
exit( 1 ); exit( 1 );