diff options
Diffstat (limited to 'v_windows/v/vlib/os/process.c.v')
| -rw-r--r-- | v_windows/v/vlib/os/process.c.v | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/v_windows/v/vlib/os/process.c.v b/v_windows/v/vlib/os/process.c.v new file mode 100644 index 0000000..c7e2b98 --- /dev/null +++ b/v_windows/v/vlib/os/process.c.v @@ -0,0 +1,248 @@ +module os + +// signal_kill - kills the process, after that it is no longer running +pub fn (mut p Process) signal_kill() { + if p.status !in [.running, .stopped] { + return + } + p._signal_kill() + p.status = .aborted + return +} + +// signal_pgkill - kills the whole process group +pub fn (mut p Process) signal_pgkill() { + if p.status !in [.running, .stopped] { + return + } + p._signal_pgkill() + return +} + +// signal_stop - stops the process, you can resume it with p.signal_continue() +pub fn (mut p Process) signal_stop() { + if p.status != .running { + return + } + p._signal_stop() + p.status = .stopped + return +} + +// signal_continue - tell a stopped process to continue/resume its work +pub fn (mut p Process) signal_continue() { + if p.status != .stopped { + return + } + p._signal_continue() + p.status = .running + return +} + +// wait - wait for a process to finish. +// NB: You have to call p.wait(), otherwise a finished process +// would get to a zombie state, and its resources will not get +// released fully, until its parent process exits. +// NB: This call will block the calling process until the child +// process is finished. +pub fn (mut p Process) wait() { + if p.status == .not_started { + p._spawn() + } + if p.status !in [.running, .stopped] { + return + } + p._wait() + return +} + +// close - free the OS resources associated with the process. +// Can be called multiple times, but will free the resources just once. +// This sets the process state to .closed, which is final. +pub fn (mut p Process) close() { + if p.status in [.not_started, .closed] { + return + } + p.status = .closed + $if !windows { + for i in 0 .. 3 { + if p.stdio_fd[i] != 0 { + fd_close(p.stdio_fd[i]) + } + } + } +} + +[unsafe] +pub fn (mut p Process) free() { + p.close() + unsafe { + p.filename.free() + p.err.free() + p.args.free() + p.env.free() + } +} + +// +// _spawn - should not be called directly, but only by p.run()/p.wait() . +// It encapsulates the fork/execve mechanism that allows the +// asynchronous starting of the new child process. +fn (mut p Process) _spawn() int { + if !p.env_is_custom { + p.env = []string{} + current_environment := environ() + for k, v in current_environment { + p.env << '$k=$v' + } + } + mut pid := 0 + $if windows { + pid = p.win_spawn_process() + } $else { + pid = p.unix_spawn_process() + } + p.pid = pid + p.status = .running + return 0 +} + +// is_alive - query whether the process p.pid is still alive +pub fn (mut p Process) is_alive() bool { + if p.status in [.running, .stopped] { + return p._is_alive() + } + return false +} + +// +pub fn (mut p Process) set_redirect_stdio() { + p.use_stdio_ctl = true + return +} + +pub fn (mut p Process) stdin_write(s string) { + p._check_redirection_call('stdin_write') + $if windows { + p.win_write_string(0, s) + } $else { + fd_write(p.stdio_fd[0], s) + } +} + +// will read from stdout pipe, will only return when EOF (end of file) or data +// means this will block unless there is data +pub fn (mut p Process) stdout_slurp() string { + p._check_redirection_call('stdout_slurp') + $if windows { + return p.win_slurp(1) + } $else { + return fd_slurp(p.stdio_fd[1]).join('') + } +} + +// read from stderr pipe, wait for data or EOF +pub fn (mut p Process) stderr_slurp() string { + p._check_redirection_call('stderr_slurp') + $if windows { + return p.win_slurp(2) + } $else { + return fd_slurp(p.stdio_fd[2]).join('') + } +} + +// read from stdout, return if data or not +pub fn (mut p Process) stdout_read() string { + p._check_redirection_call('stdout_read') + $if windows { + s, _ := p.win_read_string(1, 4096) + return s + } $else { + s, _ := fd_read(p.stdio_fd[1], 4096) + return s + } +} + +pub fn (mut p Process) stderr_read() string { + p._check_redirection_call('stderr_read') + $if windows { + s, _ := p.win_read_string(2, 4096) + return s + } $else { + s, _ := fd_read(p.stdio_fd[2], 4096) + return s + } +} + +// _check_redirection_call - should be called just by stdxxx methods +fn (mut p Process) _check_redirection_call(fn_name string) { + if !p.use_stdio_ctl { + panic('Call p.set_redirect_stdio() before calling p.$fn_name') + } + if p.status == .not_started { + panic('Call p.${fn_name}() after you have called p.run()') + } +} + +// _signal_stop - should not be called directly, except by p.signal_stop +fn (mut p Process) _signal_stop() { + $if windows { + p.win_stop_process() + } $else { + p.unix_stop_process() + } +} + +// _signal_continue - should not be called directly, just by p.signal_continue +fn (mut p Process) _signal_continue() { + $if windows { + p.win_resume_process() + } $else { + p.unix_resume_process() + } +} + +// _signal_kill - should not be called directly, except by p.signal_kill +fn (mut p Process) _signal_kill() { + $if windows { + p.win_kill_process() + } $else { + p.unix_kill_process() + } +} + +// _signal_pgkill - should not be called directly, except by p.signal_pgkill +fn (mut p Process) _signal_pgkill() { + $if windows { + p.win_kill_pgroup() + } $else { + p.unix_kill_pgroup() + } +} + +// _wait - should not be called directly, except by p.wait() +fn (mut p Process) _wait() { + $if windows { + p.win_wait() + } $else { + p.unix_wait() + } +} + +// _is_alive - should not be called directly, except by p.is_alive() +fn (mut p Process) _is_alive() bool { + $if windows { + return p.win_is_alive() + } $else { + return p.unix_is_alive() + } +} + +// run - starts the new process +pub fn (mut p Process) run() { + if p.status != .not_started { + return + } + p._spawn() + return +} |