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Diffstat (limited to 'src/kmk/kmkbuiltin/sleep.c')
| -rw-r--r-- | src/kmk/kmkbuiltin/sleep.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/src/kmk/kmkbuiltin/sleep.c b/src/kmk/kmkbuiltin/sleep.c new file mode 100644 index 0000000..044ed9c --- /dev/null +++ b/src/kmk/kmkbuiltin/sleep.c @@ -0,0 +1,179 @@ +/* $Id: sleep.c 3192 2018-03-26 20:25:56Z bird $ */ +/** @file + * kmk_sleep - suspend execution for an interval of time. + */ + +/* + * Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net> + * + * This file is part of kBuild. + * + * kBuild is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * kBuild is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with kBuild. If not, see <http://www.gnu.org/licenses/> + * + */ + +/******************************************************************************* +* Header Files * +*******************************************************************************/ +#include "config.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> +#if defined(_MSC_VER) +# include <Windows.h> +#else +# include <unistd.h> +# include <time.h> +#endif + +#include "err.h" +#include "../kmkbuiltin.h" + + +static int kmk_builtin_sleep_usage(PKMKBUILTINCTX pCtx, int fIsErr) +{ + kmk_builtin_ctx_printf(pCtx, fIsErr, + "usage: %s <seconds>[s]\n" + " or: %s <milliseconds>ms\n" + " or: %s <minutes>m\n" + " or: %s <hours>h\n" + " or: %s <days>d\n" + " or: %s --help\n" + " or: %s --version\n" + "\n" + "Only integer values are accepted.\n" + , + pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName, + pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName); + return 1; +} + + +int kmk_builtin_sleep(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx) +{ + long cMsToSleep; + long lTmp; + unsigned long ulFactor; + char *pszInterval; + char *pszSuff; + + /* + * Parse arguments. + */ + if (argc != 2) + return kmk_builtin_sleep_usage(pCtx, 1); + + /* help request */ + if ( !strcmp(argv[1], "-h") + || !strcmp(argv[1], "-?") + || !strcmp(argv[1], "-H") + || !strcmp(argv[1], "--help")) + { + kmk_builtin_sleep_usage(pCtx, 0); + return 0; + } + + /* version request */ + if ( !strcmp(argv[1], "-V") + || !strcmp(argv[1], "--version")) + { + printf("kmk_sleep - kBuild version %d.%d.%d (r%u)\n" + "Copyright (c) 2008-2009 knut st. osmundsen\n", + KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH, + KBUILD_SVN_REV); + return 0; + } + + /* + * Try convert the argument to a time period. + * Allow spaces before, between and after the different parts. + */ + pszInterval = argv[1]; + while (isspace(*pszInterval)) + pszInterval++; + + cMsToSleep = strtol(pszInterval, &pszSuff, 0); + if (pszSuff == pszInterval) + return errx(pCtx, 1, "malformed interval '%s'!\n", pszInterval); + + while (isspace(*pszSuff)) + pszSuff++; + + if (!*pszSuff) + ulFactor = 1000; /* s */ + else + { + /* find the suffix length and check that it's only white space following it. */ + int cchSuff; + int i = 1; + while (pszSuff[i] && !isspace(pszSuff[i])) + i++; + cchSuff = i; + while (pszSuff[i]) + { + if (!isspace(pszSuff[i])) + return errx(pCtx, 1, "malformed interval '%s'!\n", pszInterval); + i++; + } + + if (cchSuff == 2 && !strncmp (pszSuff, "ms", 2)) + ulFactor = 1; + else if (cchSuff == 1 && *pszSuff == 's') + ulFactor = 1000; + else if (cchSuff == 1 && *pszSuff == 'm') + ulFactor = 60*1000; + else if (cchSuff == 1 && *pszSuff == 'h') + ulFactor = 60*60*1000; + else if (cchSuff == 1 && *pszSuff == 'd') + ulFactor = 24*60*60*1000; + else + return errx(pCtx, 1, "unknown suffix '%.*s'!\n", cchSuff, pszSuff); + } + + lTmp = cMsToSleep; + cMsToSleep *= ulFactor; + if ((cMsToSleep / ulFactor) != (unsigned long)lTmp) + return errx(pCtx, 1, "time interval overflow!\n"); + + /* + * Do the actual sleeping. + */ + if (cMsToSleep > 0) + { +#if defined(_MSC_VER) + Sleep(cMsToSleep); +#else + if (cMsToSleep) + { + struct timespec TimeSpec; + TimeSpec.tv_nsec = (cMsToSleep % 1000) * 1000000; + TimeSpec.tv_sec = cMsToSleep / 1000; + nanosleep(&TimeSpec, NULL); + } +#endif + } + + return 0; +} + +#ifdef KMK_BUILTIN_STANDALONE +int main(int argc, char **argv, char **envp) +{ + KMKBUILTINCTX Ctx = { "kmk_sleep", NULL }; + return kmk_builtin_sleep(argc, argv, envp, &Ctx); +} +#endif + |