mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 23:13:34 +00:00
102 lines
4.4 KiB
C
102 lines
4.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/assert.h"
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/internal.h"
|
|
#include "libc/calls/struct/rusage.h"
|
|
#include "libc/calls/sysdebug.internal.h"
|
|
#include "libc/fmt/conv.h"
|
|
#include "libc/macros.internal.h"
|
|
#include "libc/nt/accounting.h"
|
|
#include "libc/nt/enum/status.h"
|
|
#include "libc/nt/enum/wait.h"
|
|
#include "libc/nt/runtime.h"
|
|
#include "libc/nt/struct/filetime.h"
|
|
#include "libc/nt/synchronization.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/sysv/consts/w.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
textwindows int sys_wait4_nt(int pid, int *opt_out_wstatus, int options,
|
|
struct rusage *opt_out_rusage) {
|
|
int pids[64];
|
|
int64_t handles[64];
|
|
uint32_t dwExitCode;
|
|
uint32_t i, count, timeout;
|
|
struct NtFileTime createfiletime, exitfiletime, kernelfiletime, userfiletime;
|
|
if (pid != -1) {
|
|
if (!__isfdkind(pid, kFdProcess)) {
|
|
return echild();
|
|
}
|
|
handles[0] = g_fds.p[pid].handle;
|
|
pids[0] = pid;
|
|
count = 1;
|
|
} else {
|
|
for (count = 0, i = g_fds.n; i--;) {
|
|
if (g_fds.p[i].kind == kFdProcess) {
|
|
pids[count] = i;
|
|
handles[count] = g_fds.p[i].handle;
|
|
if (++count == ARRAYLEN(handles)) break;
|
|
}
|
|
}
|
|
if (!count) {
|
|
return echild();
|
|
}
|
|
}
|
|
for (;;) {
|
|
dwExitCode = kNtStillActive;
|
|
if (options & WNOHANG) {
|
|
i = WaitForMultipleObjects(count, handles, false, 0);
|
|
if (i == kNtWaitTimeout) {
|
|
return 0;
|
|
}
|
|
} else {
|
|
i = WaitForMultipleObjects(count, handles, false, -1);
|
|
}
|
|
if (i == kNtWaitFailed) {
|
|
SYSDEBUG("WaitForMultipleObjects failed %d", GetLastError());
|
|
return __winerr();
|
|
}
|
|
assert(__isfdkind(pids[i], kFdProcess));
|
|
if (!GetExitCodeProcess(handles[i], &dwExitCode)) {
|
|
SYSDEBUG("GetExitCodeProcess failed %d", GetLastError());
|
|
return __winerr();
|
|
}
|
|
if (dwExitCode == kNtStillActive) continue;
|
|
if (opt_out_wstatus) { /* @see WEXITSTATUS() */
|
|
*opt_out_wstatus = (dwExitCode & 0xff) << 8;
|
|
}
|
|
if (opt_out_rusage) {
|
|
memset(opt_out_rusage, 0, sizeof(*opt_out_rusage));
|
|
if (GetProcessTimes(g_fds.p[pids[i]].handle, &createfiletime,
|
|
&exitfiletime, &kernelfiletime, &userfiletime)) {
|
|
opt_out_rusage->ru_utime =
|
|
WindowsDurationToTimeVal(ReadFileTime(userfiletime));
|
|
opt_out_rusage->ru_stime =
|
|
WindowsDurationToTimeVal(ReadFileTime(kernelfiletime));
|
|
} else {
|
|
SYSDEBUG("GetProcessTimes failed %d", GetLastError());
|
|
}
|
|
}
|
|
CloseHandle(g_fds.p[pids[i]].handle);
|
|
g_fds.p[pids[i]].kind = kFdEmpty;
|
|
return pids[i];
|
|
}
|
|
}
|