[src/trunk]: src/usr.bin/make make(1): reduce memory allocation for targets

[rillig <rillig%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d7fe12a2f630
branches:  trunk
changeset: 946487:d7fe12a2f630
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sun Nov 29 00:04:22 2020 +0000

description:
make(1): reduce memory allocation for targets

This change moves the initialization and finalization of the list of
targets to the same function.  They had been split before.

diffstat:

 usr.bin/make/main.c    |  16 ++++++++--------
 usr.bin/make/nonints.h |   6 +++---
 usr.bin/make/parse.c   |  23 +++++++----------------
 usr.bin/make/targ.c    |  10 ++++------
 4 files changed, 22 insertions(+), 33 deletions(-)

diffs (204 lines):

diff -r a1e8f8d4e118 -r d7fe12a2f630 usr.bin/make/main.c
--- a/usr.bin/make/main.c       Sat Nov 28 23:50:58 2020 +0000
+++ b/usr.bin/make/main.c       Sun Nov 29 00:04:22 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: main.c,v 1.487 2020/11/28 23:43:14 rillig Exp $        */
+/*     $NetBSD: main.c,v 1.488 2020/11/29 00:04:22 rillig Exp $        */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -109,7 +109,7 @@
 #include "trace.h"
 
 /*     "@(#)main.c     8.3 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: main.c,v 1.487 2020/11/28 23:43:14 rillig Exp $");
+MAKE_RCSID("$NetBSD: main.c,v 1.488 2020/11/29 00:04:22 rillig Exp $");
 #if defined(MAKE_NATIVE) && !defined(lint)
 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 "
            "The Regents of the University of California.  "
@@ -913,7 +913,7 @@
 static Boolean
 runTargets(void)
 {
-       GNodeList *targs;       /* target nodes to create */
+       GNodeList targs = LST_INIT;     /* target nodes to create */
        Boolean outOfDate;      /* FALSE if all targets up to date */
 
        /*
@@ -923,9 +923,9 @@
         * to create.
         */
        if (Lst_IsEmpty(&opts.create))
-               targs = Parse_MainName();
+               Parse_MainName(&targs);
        else
-               targs = Targ_FindList(&opts.create);
+               Targ_FindList(&targs, &opts.create);
 
        if (!opts.compatMake) {
                /*
@@ -941,16 +941,16 @@
                }
 
                /* Traverse the graph, checking on all the targets */
-               outOfDate = Make_Run(targs);
+               outOfDate = Make_Run(&targs);
        } else {
                /*
                 * Compat_Init will take care of creating all the
                 * targets as well as initializing the module.
                 */
-               Compat_Run(targs);
+               Compat_Run(&targs);
                outOfDate = FALSE;
        }
-       Lst_Free(targs);
+       Lst_Done(&targs);       /* Don't free the nodes. */
        return outOfDate;
 }
 
diff -r a1e8f8d4e118 -r d7fe12a2f630 usr.bin/make/nonints.h
--- a/usr.bin/make/nonints.h    Sat Nov 28 23:50:58 2020 +0000
+++ b/usr.bin/make/nonints.h    Sun Nov 29 00:04:22 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: nonints.h,v 1.163 2020/11/28 22:56:01 rillig Exp $     */
+/*     $NetBSD: nonints.h,v 1.164 2020/11/29 00:04:22 rillig Exp $     */
 
 /*-
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -153,7 +153,7 @@
 void Parse_AddIncludeDir(const char *);
 void Parse_File(const char *, int);
 void Parse_SetInput(const char *, int, int, NextBufProc, void *);
-GNodeList *Parse_MainName(void);
+void Parse_MainName(GNodeList *);
 int Parse_GetFatals(void);
 
 /* str.c */
@@ -204,7 +204,7 @@
 GNode *Targ_GetNode(const char *);
 GNode *Targ_NewInternalNode(const char *);
 GNode *Targ_GetEndNode(void);
-GNodeList *Targ_FindList(StringList *);
+void Targ_FindList(GNodeList *, StringList *);
 Boolean Targ_Ignore(const GNode *);
 Boolean Targ_Silent(const GNode *);
 Boolean Targ_Precious(const GNode *);
diff -r a1e8f8d4e118 -r d7fe12a2f630 usr.bin/make/parse.c
--- a/usr.bin/make/parse.c      Sat Nov 28 23:50:58 2020 +0000
+++ b/usr.bin/make/parse.c      Sun Nov 29 00:04:22 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: parse.c,v 1.460 2020/11/28 23:39:58 rillig Exp $       */
+/*     $NetBSD: parse.c,v 1.461 2020/11/29 00:04:22 rillig Exp $       */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -117,7 +117,7 @@
 #include "pathnames.h"
 
 /*     "@(#)parse.c    8.3 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: parse.c,v 1.460 2020/11/28 23:39:58 rillig Exp $");
+MAKE_RCSID("$NetBSD: parse.c,v 1.461 2020/11/29 00:04:22 rillig Exp $");
 
 /* types and constants */
 
@@ -208,7 +208,7 @@
  * with duplicates.  Kept in a separate list since the commands from .USE or
  * .USEBEFORE nodes are shared with other GNodes, thereby giving up the
  * easily understandable ownership over the allocated strings. */
-static StringList *targCmds;
+static StringList targCmds = LST_INIT;
 #endif
 
 /*
@@ -2862,7 +2862,7 @@
            ParseAddCmd(gn, cmd);
        }
 #ifdef CLEANUP
-       Lst_Append(targCmds, cmd);
+       Lst_Append(&targCmds, cmd);
 #endif
     }
 }
@@ -3115,9 +3115,6 @@
     sysIncPath = SearchPath_New();
     defSysIncPath = SearchPath_New();
     Vector_Init(&includes, sizeof(IFile));
-#ifdef CLEANUP
-    targCmds = Lst_New();
-#endif
 }
 
 /* Clean up the parsing module. */
@@ -3125,7 +3122,7 @@
 Parse_End(void)
 {
 #ifdef CLEANUP
-    Lst_Destroy(targCmds, free);
+    Lst_DoneCall(&targCmds, free);
     assert(targets == NULL);
     SearchPath_Free(defSysIncPath);
     SearchPath_Free(sysIncPath);
@@ -3140,13 +3137,9 @@
  * Return a list containing the single main target to create.
  * If no such target exists, we Punt with an obnoxious error message.
  */
-GNodeList *
-Parse_MainName(void)
+void
+Parse_MainName(GNodeList *mainList)
 {
-    GNodeList *mainList;
-
-    mainList = Lst_New();
-
     if (mainNode == NULL)
        Punt("no target to make.");
 
@@ -3157,8 +3150,6 @@
        Lst_Append(mainList, mainNode);
 
     Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL);
-
-    return mainList;
 }
 
 int
diff -r a1e8f8d4e118 -r d7fe12a2f630 usr.bin/make/targ.c
--- a/usr.bin/make/targ.c       Sat Nov 28 23:50:58 2020 +0000
+++ b/usr.bin/make/targ.c       Sun Nov 29 00:04:22 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: targ.c,v 1.146 2020/11/28 19:22:32 rillig Exp $        */
+/*     $NetBSD: targ.c,v 1.147 2020/11/29 00:04:22 rillig Exp $        */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -119,7 +119,7 @@
 #include "dir.h"
 
 /*     "@(#)targ.c     8.2 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: targ.c,v 1.146 2020/11/28 19:22:32 rillig Exp $");
+MAKE_RCSID("$NetBSD: targ.c,v 1.147 2020/11/29 00:04:22 rillig Exp $");
 
 /*
  * All target nodes that appeared on the left-hand side of one of the
@@ -311,17 +311,15 @@
 }
 
 /* Return the named nodes, creating them as necessary. */
-GNodeList *
-Targ_FindList(StringList *names)
+void
+Targ_FindList(GNodeList *nodes, StringList *names)
 {
     StringListNode *ln;
-    GNodeList *nodes = Lst_New();
     for (ln = names->first; ln != NULL; ln = ln->next) {
        const char *name = ln->datum;
        GNode *gn = Targ_GetNode(name);
        Lst_Append(nodes, gn);
     }
-    return nodes;
 }
 
 /* Return true if should ignore errors when creating gn. */