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os: implement Process.is_pending() on windows (fix #23990) (#23993)

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kbkpbot 2025-03-21 17:03:03 +08:00 • committed by GitHub
parent 76ae040f71
commit a1304637c5
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3 changed files with 29 additions and 3 deletions
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2
vlib/os/process.c.v
View file

@ -248,7 +248,7 @@ fn (mut p Process) _write_to(pkind ChildProcessPipeKind, s string) {
// _is_pending should be called only from is_pending()
fn (mut p Process) _is_pending(pkind ChildProcessPipeKind) bool {
$if windows {
// TODO
return p.win_is_pending(int(pkind))
} $else {
return fd_is_pending(p.stdio_fd[pkind])
}

4
vlib/os/process_nix.c.v
View file

@ -154,6 +154,10 @@ fn (mut p Process) win_read_string(_idx int, _maxbytes int) (string, int) {
return '', 0
}
fn (mut p Process) win_is_pending(idx int) bool {
return false
}
fn (mut p Process) win_slurp(_idx int) string {
return ''
}

26
vlib/os/process_windows.c.v
View file

@ -88,13 +88,13 @@ fn (mut p Process) win_spawn_process() int {
sa.n_length = sizeof(C.SECURITY_ATTRIBUTES)
sa.b_inherit_handle = true
create_pipe_ok1 := C.CreatePipe(voidptr(&wdata.child_stdout_read), voidptr(&wdata.child_stdout_write),
voidptr(&sa), 0)
voidptr(&sa), 65536)
failed_cfn_report_error(create_pipe_ok1, 'CreatePipe stdout')
set_handle_info_ok1 := C.SetHandleInformation(wdata.child_stdout_read, C.HANDLE_FLAG_INHERIT,
0)
failed_cfn_report_error(set_handle_info_ok1, 'SetHandleInformation')
create_pipe_ok2 := C.CreatePipe(voidptr(&wdata.child_stderr_read), voidptr(&wdata.child_stderr_write),
voidptr(&sa), 0)
voidptr(&sa), 65536)
failed_cfn_report_error(create_pipe_ok2, 'CreatePipe stderr')
set_handle_info_ok2 := C.SetHandleInformation(wdata.child_stderr_read, C.HANDLE_FLAG_INHERIT,
0)
@ -233,6 +233,28 @@ fn (mut p Process) win_read_string(idx int, _maxbytes int) (string, int) {
return buf[..bytes_read].bytestr(), bytes_read
}
fn (mut p Process) win_is_pending(idx int) bool {
mut wdata := unsafe { &WProcess(p.wdata) }
if unsafe { wdata == 0 } {
return false
}
mut rhandle := &u32(0)
if idx == 1 {
rhandle = wdata.child_stdout_read
}
if idx == 2 {
rhandle = wdata.child_stderr_read
}
if rhandle == 0 {
return false
}
mut bytes_avail := int(0)
if C.PeekNamedPipe(rhandle, 0, 0, 0, &bytes_avail, 0) {
return bytes_avail > 0
}
return false
}
fn (mut p Process) win_slurp(idx int) string {
mut wdata := unsafe { &WProcess(p.wdata) }
if unsafe { wdata == 0 } {