deinitializing locks at program exit (#19043)

* deinitializing locks at program exit

* deinitLock shouldn't be called for js backend I guess...

* I suppose this is the best way to detect the
ewruntime option

* I guess I need these guards here too...

* fixing merge conflict

lib/std/exitprocs.nim

@@ -44,6 +44,9 @@ proc callClosures() {.noconv.} =
       of kClosure: fun.fun1()
       of kNoconv: fun.fun2()
 
+  when not defined(js) and not defined(nimOwnedEnabled):
+    deinitLock(gFunsLock)
+
 template fun() =
   if gFuns.len == 0:
     addAtExit(callClosures)

lib/system/io.nim

@@ -40,7 +40,8 @@ type
 # text file handling:
 when not defined(nimscript) and not defined(js):
   # duplicated between io and ansi_c
-  const stdioUsesMacros = (defined(osx) or defined(freebsd) or defined(dragonfly)) and not defined(emscripten)
+  const stdioUsesMacros = (defined(osx) or defined(freebsd) or defined(
+      dragonfly)) and not defined(emscripten)
   const stderrName = when stdioUsesMacros: "__stderrp" else: "stderr"
   const stdoutName = when stdioUsesMacros: "__stdoutp" else: "stdout"
   const stdinName = when stdioUsesMacros: "__stdinp" else: "stdin"
@@ -158,7 +159,7 @@ proc checkErr(f: File) =
     # shouldn't happen
     quit(1)
 
-{.push stackTrace:off, profiler:off.}
+{.push stackTrace: off, profiler: off.}
 proc readBuffer*(f: File, buffer: pointer, len: Natural): int {.
   tags: [ReadIOEffect], benign.} =
   ## reads `len` bytes into the buffer pointed to by `buffer`. Returns
@@ -167,7 +168,8 @@ proc readBuffer*(f: File, buffer: pointer, len: Natural): int {.
   result = cast[int](c_fread(buffer, 1, cast[csize_t](len), f))
   if result != len: checkErr(f)
 
-proc readBytes*(f: File, a: var openArray[int8|uint8], start, len: Natural): int {.
+proc readBytes*(f: File, a: var openArray[int8|uint8], start,
+    len: Natural): int {.
   tags: [ReadIOEffect], benign.} =
   ## reads `len` bytes into the buffer `a` starting at `a[start]`. Returns
   ## the actual number of bytes that have been read which may be less than
@@ -727,7 +729,8 @@ proc open*(f: var File, filehandle: FileHandle,
   ##
   ## The passed file handle will no longer be inheritable.
   when not defined(nimInheritHandles) and declared(setInheritable):
-    let oshandle = when defined(windows): FileHandle getOsfhandle(filehandle) else: filehandle
+    let oshandle = when defined(windows): FileHandle getOsfhandle(
+        filehandle) else: filehandle
     if not setInheritable(oshandle, false):
       return false
   f = c_fdopen(filehandle, FormatOpen[mode])
@@ -780,6 +783,10 @@ when declared(stdout):
     var echoLock: SysLock
     initSysLock echoLock
 
+    when not defined(js) and not defined(nimOwnedEnabled):
+      import std/exitprocs
+      addExitProc(proc() {.noconv.} = deinitSys echoLock)
+
   const stdOutLock = not defined(windows) and
                      not defined(android) and
                      not defined(nintendoswitch) and
@@ -898,7 +905,8 @@ proc readLines*(filename: string, n: Natural): seq[string] =
   else:
     sysFatal(IOError, "cannot open: " & filename)
 
-template readLines*(filename: string): seq[string] {.deprecated: "use readLines with two arguments".} =
+template readLines*(filename: string): seq[
+    string] {.deprecated: "use readLines with two arguments".} =
   readLines(filename, 1)
 
 iterator lines*(filename: string): string {.tags: [ReadIOEffect].} =
@@ -915,7 +923,7 @@ iterator lines*(filename: string): string {.tags: [ReadIOEffect].} =
       for line in filename.lines:
         buffer.add(line.replace("a", "0") & '\n')
       writeFile(filename, buffer)
-  var f = open(filename, bufSize=8000)
+  var f = open(filename, bufSize = 8000)
   try:
     var res = newStringOfCap(80)
     while f.readLine(res): yield res