feat(Lib/signal): Handlers, Sigmasks, CTRL_*

Author: litlighilit

src/pylib/Lib/signal_impl/enums.nim

@@ -17,14 +17,18 @@ Exp ITIMER_PROF
 DeclIntEnumMeth Signals
 export Signals
 
-using self: Signals
+template add_enum[E](sym, val) =
+  let sym* = E.add_member(astToStr(sym), val)
 
 template add_sig(sym) =
   when declared(sym):
     when sym != DEF_SIG:
-      let sym* = Signals.add_member(astToStr(sym), sym)
+      add_enum[Signals](sym, sym)
 
 when true:  # just convenient for code folding
+  add_sig CTRL_C_EVENT
+  add_sig CTRL_BREAK_EVENT
+
   add_sig SIGHUP
   add_sig SIGINT
   add_sig SIGBREAK
@@ -66,5 +70,27 @@ when true:  # just convenient for code folding
   add_sig SIGSTKFLT
 
 
+# SIG_*
+DeclIntEnumMeth Handlers
+export Handlers
+
+template add_handler(sym) =
+  when declared(sym):
+    add_enum[Handlers](sym, cast[int](sym))
+
+add_handler SIG_DFL
+add_handler SIG_IGN
 
 
+# Sigmasks
+DeclIntEnumMeth Sigmasks
+export Sigmasks
+
+template add_sigmask(sym) =
+  when declared(sym):
+    add_enum[Sigmasks](sym, sym)
+
+when not defined(windows):
+  add_sigmask SIG_BLOCK
+  add_sigmask SIG_UNBLOCK
+  add_sigmask SIG_SETMASK

src/pylib/Lib/signal_impl/signals.nim

@@ -2,9 +2,13 @@
 import ./[pynsig, errutil, state, chk_util, pylifecycle, c_py_handler_cvt]
 import ./pyatomic
 
-export SIG_IGN, SIG_DFL
-
-
+import ./enums
+template toPySigHandler(handler: Handlers): PySigHandler =
+  toPySigHandler case handler:
+  of enums.SIG_DFL:
+    pylifecycle.SIG_DFL
+  of enums.SIG_IGN:
+    pylifecycle.SIG_IGN
 
 proc trip_signal(sig_num: cint){.inline.} =
   Py_atomic_store(Handlers[sig_num].tripped, true)

src/pylib/Python/pylifecycle/signal/c_syms.nim

@@ -4,6 +4,13 @@ when defined(windows):
   export winlean
   let SIGBREAK*{.importc, header: "<signal.h>".}: cint
   proc sigismember*(a1: var Sigset, a2: cint): cint {.importc, header: "<signal.h>".}
+  let
+    CTRL_C_EVENT*{.importc, header: "<Windows.h>".}: cint
+    CTRL_BREAK_EVENT*{.importc, header: "<Windows.h>".}: cint
+  type Sighandler = proc (a1: cint) {.cdecl.}
+  let
+    SIG_DFL*{.importc, header: "<signal.h>".}: Sighandler
+    SIG_IGN*{.importc, header: "<signal.h>".}: Sighandler
 else:
   import std/posix except EINTR, ERANGE
   export posix except EINTR, ERANGE