.\" Copyright (c) 1980, 1991, 1993 .\" The Regents of the University of California. All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed by the University of .\" California, Berkeley and its contributors. .\" 4. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" @(#) vfork. 2 8.1 (Berkeley) 6/4/93 .\" %FreeBSD: src/lib/libc/sys/vfork. 2, v 1.12. 2.5 2001/12/14 18:34:02 ru Exp % .\" .\" $FreeBSD: doc/ja_JP.eucJP/man/man2/vfork. 2, v 1.7 2001/12/23 00:03:42 horikawa Exp $ .Dd June 4, 1993 .Dt VFORK 2 .Os .Sh ¸íĪ .Nm vfork .Nd È¿À²ÀûÀÎ ¹æ¹ýÀ¸·Î °¡»ó ¸Þ¸ð¸®¿¡ »õ·Î¿î ÇÁ·Î¼¼½º¸¦ »ý¼º .Sh ÇÁ·Î±×·¥ ¶óÀ̺귯¸® .Lb libc .Sh ¼­½Ä .In unistd.h .Ft int .Fn vfork void .Sh ÇØ¼³ .Fn vfork ±×·³, ³°Àº ÇÁ·Î¼¼½ºÀÇ address °ø°£À» ¿ÏÀüÇÏ°Ô Ä«ÇÇÇÏÁö ¾Ê°í , »õ·Î¿î ÇÁ·Î¼¼½º¸¦ ÀÛ¼ºÇÒ ¼ö ÀÖ½À´Ï´Ù. ÆäÀÌ¡ Çϴ ȯ°æ¿¡¼­´Â, ³°Àº ÇÁ·Î¼¼½ºÀÇ address °ø°£À» ¿ÏÀüÇÏ°Ô Ä«ÇÇÇÏ´Â °ÍÀº, ¸Å¿ì ºñÈ¿À²ÀûÀÔ´Ï´Ù. .Xr fork 2 ÇÏ´Â ¸ñÀûÀÌ, .Xr execve 2 (À»)¸¦ À§ÇÑ »õ·Î¿î ½Ã½ºÅÛ ¹®¸ÆÀÇ ÀÛ¼ºÀÎ °æ¿ì¿¡ À¯È¿ÇÕ´Ï´Ù. .Fn vfork (Àº)´Â, .Xr execve 2 (À»)¸¦ È£ÃâÇÏ´ÂÁö, Á¾·áÇÑ´Ù ( .Xr _exit 2 (À»)¸¦ È£ÃâÇÏ´ÂÁö ÀÌ»óÁ¾·á(ABEND) ÇÑ´Ù)±îÁö ¾ÆÀ̰¡ ºÎ¸ðÀÇ ¸Þ¸ð¸®¿Í ÄÁÆ®·ÑÀÇ thread¸¦ ºô¸°´Ù°í ÇÏ´Â Á¡À¸·Î, .Xr fork 2 (¿Í)°ú ´Ù¸¨´Ï´Ù. parent process´Â, ¾ÆÀ̰¡ ¸®¼Ò½º¸¦ »ç¿ëÇϰí ÀÖ´Â µ¿¾È Á¤ÁöµË´Ï´Ù. .Pp .Fn vfork (Àº)´Â, 0 À» ¾ÆÀÌÀÇ ¹®¸Æ¿¡, ±×¸®°í ( ÈÄ¿¡) ¾ÆÀÌÀÇ pid ¸¦ ºÎ¸ðÀÇ ¹®¸Æ¿¡ µÇµ¹¸³´Ï´Ù. .Pp Åë»óÀÇ °æ¿ì, .Fn vfork ÇÏ .Xr fork 2 (¿Í)°ú °°ÀÌ »ç¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù. ±×·¯³ª, .Fn vfork (À»)¸¦ È£ÃâÇÑ ÇÁ·Î½ÃÀú·ÎºÎÅÍ ¾ÆÀÌÀÇ ¹®¸ÆÀ¸·Î µ¿ÀÛÇϰí ÀÖ´Â µ¿¾È¿¡ µ¿ÀÛÇØ µ¹¾Æ¿Ã °ÍÀº ¾ø½À´Ï´Ù. ÃÖÁ¾ÀûÀ¸·Î .Fn vfork (À¸)·ÎºÎÅÍ µ¹¾Æ¿À¸é(ÀÚ), Á¸ÀçÇÏÁö ¾Ê´Â ½ºÅà ÇÁ·¹ÀÓÀ¸·Î µ¹¾Æ¿À±â ¶§¹®ÀÔ´Ï´Ù. .Xr execve 2 (À»)¸¦ ½ÇÇàÇÒ ¼ö ¾ø´Â °æ¿ì´Â, .Xr exit 3 (ÀÌ)°¡ ¾Æ´Ï°í, .Xr _exit 2 (À»)¸¦ È£ÃâÇØ ÁÖ¼¼¿ä. .Xr exit 3 (Àº)´Â Ç¥ÁØ ÀÔÃâ·Â ä³ÎÀ» Ç÷¡½Ã ÇØ ´Ý±â (À§ÇØ)¶§¹®¿¡, parent processÀÇ Ç¥ÁØ ÀÔÃâ·Â µ¥ÀÌÅÍ ±¸Á¶ °Ç°­À» ÇØÃÄ ¹ö¸³´Ï´Ù. ( .Xr fork 2 ±×·¸Áö¸¸, ¹öÆÛ¿¡ µé¾î°¡ ÀÖ´Â µ¥ÀÌÅͰ¡ 2 ȸ Ç÷¡½Ã µÇ¹Ç·Î, .Xr exit 3 (À»)¸¦ È£ÃâÇÏÁö ¸»¾Æ ÁÖ¼¼¿ä. ) .Sh °ü·Ã Ç׸ñ .Xr execve 2 , .Xr fork 2 , .Xr rfork 2 , .Xr sigvec 2 , .Xr wait 2 , .Xr _exit 2 , .Xr exit 3 .Sh ¹Ýȯ°ª .Xr fork 2 (¿Í)°ú °°½À´Ï´Ù. .Sh ¹ö±× ÀÌ ½Ã½ºÅÛ ÄÝÀº, ÀûÀýÇÑ ½Ã½ºÅÛ °øÀ¯ ¸ÞÄ«´ÏÁò ÇÏÁö¸¸ ½ÇÇöµÇ¾úÀ» ¶§¿¡ »èÁ¦µË´Ï´Ù. »èÁ¦µÇ¾úÀ» °æ¿ì´Â, .Xr fork 2 (ÀÌ)¶ó°í µ¿Àǰ¡ µÇ¹Ç·Î, .Xr vfork 2 ÀÇ ¸Þ¸ð¸® °øÀ¯ÀÇ Çö½ÇÀå¿¡´Â ÀÇÁ¸ÇÏÁö ¸»¾Æ ÁÖ¼¼¿ä. .Pp µ¥µå ·ÏÀ» ÇÇÇϱâ (À§ÇØ)¶§¹®¿¡, .Fn vfork ÀÇ µµÁß¿¡ ¾ÆÀ̰¡ µÇ´Â ÇÁ·Î¼¼½º¿¡´Â, .Dv SIGTTOU ½Ã±×³ÎÀ̳ª .Dv SIGTTIN ½Ã±×³ÎÀÌ ¼Û½ÅµÇÁö ¾Ê½À´Ï´Ù. ±× ´ë½Å¿¡ Ãâ·Â, ¶Ç´Â, .Xr ioctl 2 È£ÃâÀÌ Çã°¡µÇ¾î ÀÔ·ÂÇÏ·Á°í Çϸé(ÀÚ) EOF °¡ µË´Ï´Ù. .Sh ¿ª»ç .Fn vfork ÇÔ¼ö È£ÃâÀº, .Bx 2.9 ±×¸®°í µîÀåÇß½À´Ï´Ù.