Instead of copying the file byte by byte into an expanding line buffer, just
scan the file buffer for (unescaped) newlines.
Escaped newlines (etc) are processed by modifying the file buffer later.
Speeds up 'nbmake obj' by a factor of 2.
I suspect it will do wonders for parts of pkgsrc as well, since it largely
eliminates cpu cycles from the false part of .ifs.
Commons up the code for reading files and buffers, and allows a further
change where we don't copy the data out of the buffer when generating 'lines.
This will speed up makefile parsing (esp .if clauses).
ParseTraditionalInclude() into a separate routine.
Fix the 'use after free' and 'free on item not malloced' that got added
to ParseTraditionalInclude() in Feb 2006 (rev 1.111).
Kill the 'PTR' struct and put both its members into IFile.
Remove the parameter from ParseEOF(), 1 of the 3 calls passed the wrong value!
Fortunately another test stopped anything nasty happening, we'll use that
test instead.
into every 'gnode' (aka target), instead just copy a pointer to the string
and avoid freeing the original name when we close the file.
I can't imagine any makefile set where this gives a larger footprint!
the short parts of some conditionals first.
First step towards speeding up the parsing of makefiles (esp. the unwanted
parts of .if clauses).
There should be no changes to the logic.
- Only test 'printVars' once.
Has side effect of not trying to find the 'main' target for '-V varname'.
- Only reap the single child process in Cmd_Exec(),
I think this is for 'xx != cmd' so probobably no other children should exist.
- Don't read and parse .depend if '-r' and '-V varname' are set.
I suspect that .depend shouldn't affect the output of any -V command...
It doesn't need a two-dimensional array to remember the states of .if lines.
It would be even simpler if we didn't try to detect .else and .elif lines
that follow .else lines.
Unfortunately this isn't the code that is stupendously slow...
Document the -d-flags and -dFfilename.%d options.
Mention MAKEFLAGS at the top, reword to make it clear that makefile and
Makefile are only used if no -f makefile is given.
This gives a considerable speedup in the processing of .WAIT and .ORDER.
Both .WAIT and .ORDER stop both the commands of the node, and its dependant
nodes being built until the LH nodes are complete.
.WAIT only applies to the dependency line on which it appears, whereas
.ORDER applies globally between the two nodes.
In both cases dependant nodes can be built because other targets need them.
make now processes the target list left to right, scheduling child nodes
as they are needed to make other nodes (instead of attempting to generate
a bottom-up dependency graph at the start). This means that 'make -j1'
will tend to build in the same order as a non-parallel make.
Note that:
all: x y
x: a .WAIT b
y: b .WAIT a
does not generate a dependency loop.
But
x: y
.ORDER y x
does (unless something elswhere causes 'y' to be built).
replace the %d with getpid().
Allows the trace files for different make process is a big recursive make
to be written to different files - and have a slight chance of being useful.
globbing.
The old behaviour was the perform variable expansion and globbing on the
output of both the variable expansion and globbing. Which allows some very
strange behaviour if, for example, globbed filenames contain $ symbols.
Unconditionally add new nodes from these expansions even if the names are
already children. The .WAIT code needs the order of children preserved.
Rename 'allsrc' to 'curSrcs' so that the variable passed to ParseDoSrc (etc)
has the same name as the local in the calling routine, rather than a name
that seems to imply a more global and persistent list.
loop continue part. Remove the 'free(line)' from teh end of the loop body,
change the gotos into continues and collapse out some 'else if's.
All in the name of code transparency. No functional changes.
(Almost all the debug output went there, but some went to stderr.)
Split the parsing of -d (debug flags) out into its own routine.
Allow the output filename to be changed by specifying -dF<file> to create
a log file, or -dF+<file> to append to it. <file> may be stdout or stderr.
Also change so that -d-<flags> acts on <flags> locally but doesn't copy
them to MAKEFLAGS so they aren't inherited by child makes.
I'm not 100% happy with the command line syntax for the above, so they are
currently undocumented.
entries, so allocate at startup.
Use an 'int jobPipe[2]' within the job structure, and create pipes directly
into it. Common up the code that creates all the pipes - making them all
non-block on the read side in the process.
Call Job_CatchChildren() directly from Job_CatchOutput() so that it only
gets called when a child actually exits.
NB: Something causes a 'pregnant pause' if (for example) you call 'nbmake obj'
in src/tools. Introduced between netbsd 3 and 4.
shell. To use this, build with -D_PATH_DEFSHELLDIR=\"/path/to/dir\"
-D_BASENAME_DEFSHELL=\"shell\".
* Change the order of entries in shells[]. Now DEFSHELL defaults to 0,
and shells[0] describes the default shell. This will be "sh" in the
usual case.
* If _BASENAME_DEFSHELL is defined, insert an additional entry above
"sh" in the shells[] array, making this new entry shells[0]. The
new entry is assumed to refer to an sh-compatible shell with a
non-standard name. (Tested using _PATH_DEFSHELLDIR="/usr/pkg/bin" and
_BASENAME_DEFSHELL="bash".)
* In the shells[] entry for "sh", test defined(MAKE_NATIVE) &&
defined(__NetBSD__) to decide whether we can use the "q" flag.
OK sjg, christos
messages whan make itself is suspended (ie by ^Z) before make actually
suspends, supress the messages during this sequence.
This means we don't care that they would be output after the suspend
and we can stop attempting to reap child status from withing the signal
handler (which doesn't work for recursive parallel makes).
The code simplification means that we can remove much of the code that
blocked signals - since the signal handlers (expect that for ^C and friends)
now do almost no work.
If there are any undead ones set a flag so we don't report the 'Child (pid)
not in table' message when they die - it is impossible to (portably) find
the childrens pids.
This happens when make is run as 'make -f- ... <<EOF' and the shell uses
a child of (what will be) make to write the data into a pipe.
- Send each type of signal to its own handler.
- Only call JobFinish when a process exits, in particular don't 'fake up'
'exitstatus' for jobs being continued, nor call it for suspends.
- When a job is stopped, use an entire variable to remember the fact, so
we know we need to send a SIGCONT. Don't change any other state.
- In order to report '*** [job3] Suspended' before we suspend ourselves we
have to call waitpid() from the signal handler - where we don't want to
process job termination events. Save the exit status and process later.
The code now handles:
- jobs that suspend themselves
- jobs exiting while suspended
- jobs that don't actually suspend at all
Hoewever it still does printfs() from the signal handler, and I haven't yet
stopped it thrashing the signal mask.
with a table that is malloced with 'maxJobs' entries.
Add a 'job_state' field to the Job type that exactly follows which of
the old lists the job was on (or not).
Change all the code that scanned the lists to scan the array.
No logic changes in this commit.
(Soon we'll no longer need to lock out signals for the changes to job
statuses that are done from signal handlers now that there is no linked list.)
