proposal: stop_at_err_count patch

[Richa Bindra]

Hi
Just wondering if anyone is interested in the proposed patch?

Regards 
Richa Bindra 

   ----- Forwarded message ----- From: Richa Bindra <address@hidden>To: 
address@hidden <address@hidden>Sent: Tuesday, 9 October, 2018, 9:32:30 AM 
GMT-4Subject: Fw: proposal: stop_at_err_count patch
 Hi
 Thanks Martin for pointing the formatting issue.

The patch I posted earlier is poorly formatted, so I am trying an attachment 
instead.

The current problem with this patch is that when GNU make exits, the children 
processes left are not killed by GNU make when it exits. I want all children to 
be killed before GNU Make returns. I am not well versed with GNU Make code, so 
any advice or feedback would be appreciated!


Regards 
Richa Bindra 

   ----- Forwarded message ----- From: Martin d'Anjou <address@hidden>To: Richa 
Bindra <address@hidden>Cc: "address@hidden" <address@hidden>Sent: Monday, 8 
October, 2018, 9:41:26 AM GMT-4Subject: Re: proposal: stop_at_err_count patch
 Hello,
Richa: Somehow the email formatting screw up the patch, can you try to send it 
as an attachment instead?

I had a similar patch on GNU Make 3.81, thanks for making it for 4.2.1. This 
saves thousands of hours of CPU on the CI host, hours that can go to other 
tasks. I also found my old bug report (https://savannah.gnu.org/bugs/?41781).
What I'd like to know from Paul and other owners/contributors: what would be 
required to make such a feature part of GNU Make?
Best,Martin d'Anjou


On Thu, Oct 4, 2018 at 5:04 PM Richa Bindra <address@hidden> wrote:

Hi,

Here is a small patch that adds a new option to make that causes make to abort 
after N failures. An extra argument --stop-at-err-count[=N] is provided which 
forces GNU Make to return immediately when the number of errors is reached. 
The current problem with this patch is that when GNU make exits, the children 
processes left are not killed by GNU make when it exits. I want all children to 
be killed before GNU Make returns. I am not well versed with GNU Make code, so 
any advice or feedback would be appreciated!

diff -u /home/foo/make_git/make/job.c make/make-4.2.1/job.c--- 
/home/foo/make_git/make/job.c 2018-10-04 16:30:01.108348000 -0400+++ 
make/make-4.2.1/job.c 2018-10-04 16:28:12.119052000 -0400@@ -478,9 +478,19 @@   
const char *nm;   size_t l; +  if (max_stop_at_err_count <= stop_at_err_count)+ 
 {+    error (NILF, 0, _("*** [%p] Error (aborted after %d failures) %d"),+     
   child, stop_at_err_count, exit_code);+    die (2);+  }+   if (ignored && 
silent_flag)     return; +/* Only increase STOP_AT_ERR_COUNT if the job 
_really_ failed.  */+  stop_at_err_count++;+   if (exit_sig && coredump)     
dump = _(" (core dumped)"); @@ -595,8 +605,14 @@           /* We might block 
for a while, so let the user know why.              Only print this message 
once no matter how many jobs are left.  */           fflush (stdout);-          
if (!printed)-            O (error, NILF, _("*** Waiting for unfinished 
jobs...."));+          if (!printed) {+             O (error, NILF, _("*** 
Waiting for unfinished jobs...."));+             if (max_stop_at_err_count <= 
stop_at_err_count)+               {+                 error (NILF,0, _("*** 
Aborting after %d failures"),stop_at_err_count);+                 die (2);+     
          }+          }           printed = 1;         } diff -u 
/home/foo/make_git/make/main.c make/make-4.2.1/main.c--- 
/home/foo/make_git/make/main.c 2018-10-04 16:30:01.120391000 -0400+++ 
make/make-4.2.1/main.c 2018-10-04 16:29:19.185057000 -0400@@ -216,9 +216,13 @@  
/* Nonzero means keep going even if remaking some file fails (-k).  */ -int 
keep_going_flag;+int keep_going_flag = 0; int default_keep_going_flag = 0; +int 
stop_at_err_count = 0;+unsigned int max_stop_at_err_count = -1;+static unsigned 
int inf_stop_at_err_count = 0;+ /* Nonzero means check symlink mtimes.  */  int 
check_symlink_flag = 0;@@ -394,6 +398,8 @@   -S, --no-keep-going, --stop\n\     
                          Turns off -k.\n"),     N_("\+      
--stop-at-err-count[=N] Stop when N errors are reached. Default 0 
(infinite).\n"),+    N_("\   -t, --touch                 Touch targets instead 
of remaking them.\n"),     N_("\   --trace                     Print tracing 
information.\n"),@@ -471,6 +477,9 @@       "warn-undefined-variables" },     { 
CHAR_MAX+6, strlist, &eval_strings, 1, 0, 0, 0, 0, "eval" },     { CHAR_MAX+7, 
string, &sync_mutex, 1, 1, 0, 0, 0, "sync-mutex" },+    { CHAR_MAX+8, 
positive_int, (char *) &max_stop_at_err_count, 1, 1, 0,+      (char *) 
&inf_stop_at_err_count,+      (char *) &max_stop_at_err_count, 
"stop-at-err-count" },     { 0, 0, 0, 0, 0, 0, 0, 0, 0 }   }; diff -u 
/home/foo/make_git/make/makeint.h make/make-4.2.1/makeint.h--- 
/home/foo/make_git/make/makeint.h 2018-10-04 16:30:01.169374000 -0400+++ 
make/make-4.2.1/makeint.h 2018-10-04 14:15:07.587723000 -0400@@ -639,6 +639,9 
@@ extern const floc *reading_file; extern const floc **expanding_var; +extern 
int stop_at_err_count;+extern unsigned int max_stop_at_err_count;+ extern 
unsigned short stopchar_map[];  extern int just_print_flag, silent_flag, 
ignore_errors_flag, keep_going_flag;


Regards Richa Bindra
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make.patch
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