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739e1badb6
* stdlib organization & documentation improvements * fix CI * Update doc/lib.md Co-authored-by: Juan Carlos <juancarlospaco@gmail.com> * fix ci, remove jshttpcore, export in jsfetch instead * fix alphabetical order violations * add cmdline, db_odbc Co-authored-by: Juan Carlos <juancarlospaco@gmail.com>
90 lines
2.2 KiB
Nim
90 lines
2.2 KiB
Nim
#
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#
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# Nim's Runtime Library
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# (c) Copyright 2020 Andreas Rumpf
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#
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# See the file "copying.txt", included in this
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# distribution, for details about the copyright.
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#
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## This module allows adding hooks to program exit.
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import locks
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type
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FunKind = enum kClosure, kNoconv # extend as needed
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Fun = object
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case kind: FunKind
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of kClosure: fun1: proc () {.closure.}
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of kNoconv: fun2: proc () {.noconv.}
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var
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gFunsLock: Lock
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gFuns: seq[Fun]
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initLock(gFunsLock)
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when defined(js):
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proc addAtExit(quitProc: proc() {.noconv.}) =
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when defined(nodejs):
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asm """
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process.on('exit', `quitProc`);
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"""
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elif defined(js):
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asm """
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window.onbeforeunload = `quitProc`;
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"""
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else:
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proc addAtExit(quitProc: proc() {.noconv.}) {.
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importc: "atexit", header: "<stdlib.h>".}
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proc callClosures() {.noconv.} =
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withLock gFunsLock:
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for i in countdown(gFuns.len-1, 0):
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let fun = gFuns[i]
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case fun.kind
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of kClosure: fun.fun1()
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of kNoconv: fun.fun2()
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template fun() =
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if gFuns.len == 0:
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addAtExit(callClosures)
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proc addExitProc*(cl: proc () {.closure.}) =
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## Adds/registers a quit procedure. Each call to `addExitProc` registers
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## another quit procedure. They are executed on a last-in, first-out basis.
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# Support for `addExitProc` is done by Ansi C's facilities here.
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# In case of an unhandled exception the exit handlers should
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# not be called explicitly! The user may decide to do this manually though.
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withLock gFunsLock:
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fun()
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gFuns.add Fun(kind: kClosure, fun1: cl)
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proc addExitProc*(cl: proc() {.noconv.}) =
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## overload for `noconv` procs.
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withLock gFunsLock:
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fun()
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gFuns.add Fun(kind: kNoconv, fun2: cl)
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when not defined(nimscript):
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proc getProgramResult*(): int =
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when defined(js) and defined(nodejs):
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asm """
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`result` = process.exitCode;
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"""
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elif not defined(js):
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result = programResult
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else:
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doAssert false
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proc setProgramResult*(a: int) =
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# pending https://github.com/nim-lang/Nim/issues/14674
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when defined(js) and defined(nodejs):
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asm """
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process.exitCode = `a`;
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"""
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elif not defined(js):
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programResult = a
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else:
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doAssert false
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