signal, exec, wait, pid: improvements, especially to exec

- fix popen [open "|pipeline ..."] to return meaningful status in close
  (but note that stderr is not captured)
- popen pipelines can now be used as the target of exec redirection
- overally improvements to exec on windows. Now crt file descriptors
  are used throughout
- add support for [pid], [wait] and popen on windows
- os.wait is now wait, and integrates with [exec ... &] to be able
  to wait for running background tasks
- [socket pipe] is now also [pipe] and is supported on windows
- [file tempfile] is supported on windows
- move duplicated code between jim-aio.c and jim-exec.c to jimiocompat.c
- Fix [exec] on windows to match unix semantics wrt sharing the parent stream
  unless redirected rather than using /dev/null
- On windows redirect to or from /dev/null is automatically converted to NUL:
- If signal support is disabled, implement a minimal Jim_SignalId() for exec and wait
- aio now supports getfd, to return the underlying file descriptor.
  This is used by exec to support redirection, and allows popen channels
  to support exec redirection.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

1 files changed, 26 insertions, 6 deletions

diff --git a/tests/exec.test b/tests/exec.test
index 76a1b2d..0eb218a 100644
--- a/tests/exec.test
+++ b/tests/exec.test
@@ -17,26 +17,23 @@ source [file dirname [info script]]/testing.tcl
 
 needs cmd exec
 needs cmd flush
-needs cmd after eventloop
 
 testConstraint unix [expr {$tcl_platform(platform) eq {unix}}]
 
 # Sleep which supports fractions of a second
 if {[info commands sleep] eq {}} {
     proc sleep {n} {
-	after [expr {int($n * 1000)}]
+	exec {*}$::sleepx $n
     }
 }
 
 set f [open sleepx w]
-puts $f "#![info nameofexecutable]"
 puts $f {
-    set seconds [lindex $argv 0]
-    after [expr {int($seconds * 1000)}]
+    sleep "$@"
 }
 close $f
 #catch {exec chmod +x sleepx}
-set sleepx [list [info nameofexecutable] sleepx]
+set sleepx [list sh sleepx]
 
 # Basic operations.
 
@@ -416,6 +413,29 @@ test exec-16.1 {flush output before exec} -body {
 Second line
 Third line}
 
+test exec-17.1 {redirecting from command pipeline} -setup {
+    makeFile "abc\nghi\njkl" gorp.file
+} -body {
+    set f [open "|cat gorp.file | wc -l" r]
+    set result [lindex [exec cat <@$f] 0]
+    close $f
+    set result
+} -cleanup {
+    file delete gorp.file
+} -result {3}
+
+test exec-17.2 {redirecting to command pipeline} -setup {
+    makeFile "abc\nghi\njkl" gorp.file
+} -body {
+    set f [open "|wc -l >gorp2.file" w]
+    exec cat gorp.file >@$f
+    flush $f
+    close $f
+    lindex [exec cat gorp2.file] 0
+} -cleanup {
+    file delete gorp.file gorp2.file
+} -result {3}
+
 file delete sleepx
 
 testreport