diff options
Diffstat (limited to 'dmake/unix/rmprq.c')
| -rw-r--r-- | dmake/unix/rmprq.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/dmake/unix/rmprq.c b/dmake/unix/rmprq.c new file mode 100644 index 000000000000..0144e18c2427 --- /dev/null +++ b/dmake/unix/rmprq.c @@ -0,0 +1,121 @@ +/* $RCSfile: rmprq.c,v $ +-- $Revision: 1.5 $ +-- last change: $Author: obo $ $Date: 2007-06-12 06:09:05 $ +-- +-- SYNOPSIS +-- Remove prerequisites code. +-- +-- DESCRIPTION +-- This code is different for DOS and for UNIX and parallel make +-- architectures since the parallel case requires the rm's to be +-- run in parallel, whereas DOS guarantees to run them sequentially. +-- +-- AUTHOR +-- Dennis Vadura, dvadura@dmake.wticorp.com +-- +-- WWW +-- http://dmake.wticorp.com/ +-- +-- COPYRIGHT +-- Copyright (c) 1996,1997 by WTI Corp. All rights reserved. +-- +-- This program is NOT free software; you can redistribute it and/or +-- modify it under the terms of the Software License Agreement Provided +-- in the file <distribution-root>/readme/license.txt. +-- +-- LOG +-- Use cvs log to obtain detailed change logs. +*/ + +#include "extern.h" + +PUBLIC void +Remove_prq( tcp )/* +=================== + Removable targets (ie. an inferred intermediate node) are removed + by this function by running Make() on the special target .REMOVE + (pointed to by tcp). + As this function can be called from within another Make() (for example + like this: + Make()->Exec_commands()->Do_cmnd()->runargv()->..->_finished_child() + ->Update_time_stamp()->Remove_prq() ) + it is necessary to store and restore the dynamic macros when Make() + is finished. + + FIXME: Another potential problem is that while building .REMOVE another + previously started target finishes and from _finished_child() calls + Remove_prq() again. This will delete the dynamic macros and possibly + clear/reset the prerequisites of the previous .REMOVE target. +*/ +CELLPTR tcp; +{ + static LINKPTR rlp = NIL(LINK); + static int flag = 0; + static HASHPTR m_at, m_q, m_b, m_g, m_l, m_bb, m_up; + char *m_at_s, *m_g_s, *m_q_s, *m_b_s, *m_l_s, *m_bb_s, *m_up_s; + LINKPTR tlp; + + /* Unset F_MADE and F_VISITED. */ + tcp->ce_flag &= ~(F_MADE|F_VISITED); + tcp->ce_time = 0L; + + /* The idea seems to be to create a target that is used to remove + * intermediate prerequisites. Why add something to the "CeMeToo(tlp)" + * list? I don't understand this yet. + * FIXME! Either comment on what is going on or fix the code. */ + for( tlp=rlp; tlp !=NIL(LINK); tlp=tlp->cl_next ) + /* Find first target that has F_VISITED not set or F_MADE set, + * i.e. it is not currently made or already done. */ + if( (tlp->cl_prq->ce_flag & (F_VISITED|F_MADE)) != F_VISITED ) + break; + + if( tlp == NIL(LINK) ) { + TALLOC(tlp, 1, LINK); + TALLOC(tlp->cl_prq, 1, CELL); + tlp->cl_next = rlp; + rlp = tlp; + } + + *tlp->cl_prq = *tcp; + + /* We save the dynamic macro values here, as it is possible that the + * .REMOVE recipe is getting executed for a target while some other target + * is in the middle of executing it's list of recipe lines, in this case + * the values of $@ etc, must be preserved so that when we return to + * complete the other recipe we must make certain that the values of it's + * dynamic macros are unmodified. */ + + if( !flag ) { + /* Do the getting of the macros only once. */ + flag = 1; + m_at = Get_name("@", Macs, TRUE); + m_g = Get_name(">", Macs, TRUE); + m_q = Get_name("?", Macs, TRUE); + m_b = Get_name("<", Macs, TRUE); + m_l = Get_name("&", Macs, TRUE); + m_bb = Get_name("*", Macs, TRUE); + m_up = Get_name("^", Macs, TRUE); + } + + m_at_s = m_at->ht_value; m_at->ht_value = NIL(char); + m_g_s = m_g->ht_value; m_g->ht_value = NIL(char); + m_q_s = m_q->ht_value; m_q->ht_value = NIL(char); + m_b_s = m_b->ht_value; m_b->ht_value = NIL(char); + m_l_s = m_l->ht_value; m_l->ht_value = NIL(char); + m_bb_s = m_bb->ht_value; m_bb->ht_value = NIL(char); + m_up_s = m_up->ht_value; m_up->ht_value = NIL(char); + + Make( tlp->cl_prq, tcp ); + if( tlp->cl_prq->ce_dir ){ + FREE(tlp->cl_prq->ce_dir); + tlp->cl_prq->ce_dir=NIL(char); + } + + m_at->ht_value = m_at_s; + m_g->ht_value = m_g_s; + m_q->ht_value = m_q_s; + m_b->ht_value = m_b_s; + m_l->ht_value = m_l_s; + m_bb->ht_value = m_bb_s; + m_up->ht_value = m_up_s; +} |