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authorIndrajith K L2022-12-03 17:00:20 +0530
committerIndrajith K L2022-12-03 17:00:20 +0530
commitf5c4671bfbad96bf346bd7e9a21fc4317b4959df (patch)
tree2764fc62da58f2ba8da7ed341643fc359873142f /v_windows/v/vlib/os/process.c.v
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Adds most of the toolsHEADmaster
Diffstat (limited to 'v_windows/v/vlib/os/process.c.v')
-rw-r--r--v_windows/v/vlib/os/process.c.v248
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
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+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
+}