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Added a wait4 implementation for older operating systems. 

svn path=/trunk/boinc/; revision=2283
This commit is contained in:
Eric J. Korpela 2003-09-06 03:34:03 +00:00
parent 44090272ca
commit 962e8a19de
1 changed files with 40 additions and 0 deletions
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40
client/app.C
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@ -446,6 +446,46 @@ int ACTIVE_TASK::kill_task() {
#endif
}
#if !defined(HAVE_WAIT4) && defined(HAVE_WAIT3)
#include <map>
struct proc_info_t {
int status;
rusage r;
proc_info_t() {};
proc_info_t(int s, const rusage &ru);
};
proc_info_t::proc_info_t(int s, const rusage &ru) : status(s), r(ru) {}
pid_t wait4(pid_t pid, int *statusp, int options, struct rusage *rusagep) {
static std::map<pid_t,proc_info_t> proc_info;
pid_t tmp_pid=0;
if (!pid) {
return wait3(statusp,options,rusagep);
} else {
if (proc_info.find(pid) == proc_info.end()) {
do {
tmp_pid=wait3(statusp,options,rusagep);
if ((tmp_pid>0) && (tmp_pid != pid)) {
proc_info[tmp_pid]=proc_info_t(*statusp,*rusagep);
if (!(options && WNOHANG)) {
tmp_pid=0;
}
} else {
return pid;
}
} while (!tmp_pid);
} else {
*statusp=proc_info[pid].status;
*rusagep=proc_info[pid].r;
proc_info.erase(pid);
return pid;
}
}
}
#endif
bool ACTIVE_TASK::task_exited() {
#ifdef _WIN32
unsigned long exit_code;