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135cc00ef8
* bjam; bump to version 3.1.12 * bjam; make it possible to build in MinGW/MSYS shell * bjam; move profile code to debug.h/c to make it available for use everywhere * bjam; cache all filesystem query operations, Unix and Windows only, include PWD and scanning * bjam; add memory profile info, and sprinkle throught code * bbv2; rewrite some while() loops into for() loops to reduce time and memory * bbv2; keep a single instance counter instead of one per type to reduce memory use * bjam+bbv2; change NORMALIZE_PATH builtin to join path parts to reduce memory use [SVN r31177]
112 lines
2.3 KiB
C
112 lines
2.3 KiB
C
/*
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* Copyright 1993, 1995 Christopher Seiwald.
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*
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* This file is part of Jam - see jam.c for Copyright information.
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*/
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/* This file is ALSO:
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* Copyright 2001-2004 David Abrahams.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
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*/
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/*
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* command.c - maintain lists of commands
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*/
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# include "jam.h"
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# include "lists.h"
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# include "parse.h"
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# include "variable.h"
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# include "rules.h"
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# include "debug.h"
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# include "command.h"
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# include <limits.h>
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# include <string.h>
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/*
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* cmd_new() - return a new CMD or 0 if too many args
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*/
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CMD *
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cmd_new(
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RULE *rule,
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LIST *targets,
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LIST *sources,
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LIST *shell )
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{
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CMD *cmd = (CMD *)malloc( sizeof( CMD ) );
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/* lift line-length limitation entirely when JAMSHELL is just "%" */
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int no_limit = ( shell && !strcmp(shell->string,"%") && !list_next(shell) );
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int max_line = MAXLINE;
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int allocated = -1;
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if ( DEBUG_PROFILE )
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profile_memory( sizeof( CMD ) );
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cmd->rule = rule;
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cmd->shell = shell;
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cmd->next = 0;
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lol_init( &cmd->args );
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lol_add( &cmd->args, targets );
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lol_add( &cmd->args, sources );
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cmd->buf = 0;
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do
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{
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free(cmd->buf); /* free any buffer from previous iteration */
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cmd->buf = (char*)malloc(max_line + 1);
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if ( DEBUG_PROFILE )
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profile_memory( max_line + 1 );
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if (cmd->buf == 0)
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break;
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allocated = var_string( rule->actions->command, cmd->buf, max_line, &cmd->args );
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max_line = max_line * 2;
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}
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while( allocated < 0 && max_line < INT_MAX / 2 );
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if ( !no_limit )
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{
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/* Bail if the result won't fit in MAXLINE */
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char *s = cmd->buf;
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while ( *s )
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{
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size_t l = strcspn( s, "\n" );
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if ( l > MAXLINE )
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{
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/* We don't free targets/sources/shell if bailing. */
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cmd_free( cmd );
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return 0;
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}
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s += l;
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if ( *s )
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++s;
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}
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}
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return cmd;
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}
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/*
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* cmd_free() - free a CMD
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*/
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void
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cmd_free( CMD *cmd )
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{
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lol_free( &cmd->args );
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list_free( cmd->shell );
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free( cmd->buf );
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free( (char *)cmd );
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}
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