Author: eadler
Date: Sun Apr 29 22:19:58 2012
New Revision: 234819
URL: http://svn.freebsd.org/changeset/base/234819
Log:
Allow users of gprof to get per run output files (using the pid)
PR: bin/99800
Submitted by: Peter Jeremy <peterjer...@optushome.com.au>
Reviewed by: jilles (code)
Reviewed by: dwhite (doc)
Approved by: cperciva
MFC after: 1 week
Modified:
head/lib/libc/gmon/gmon.c
head/lib/libc/gmon/moncontrol.3
Modified: head/lib/libc/gmon/gmon.c
==============================================================================
--- head/lib/libc/gmon/gmon.c Sun Apr 29 22:01:23 2012 (r234818)
+++ head/lib/libc/gmon/gmon.c Sun Apr 29 22:19:58 2012 (r234819)
@@ -157,7 +157,12 @@ _mcleanup(void)
}
moncontrol(0);
- snprintf(outname, sizeof(outname), "%s.gmon", _getprogname());
+ if (getenv("PROFIL_USE_PID"))
+ snprintf(outname, sizeof(outname), "%s.%d.gmon",
+ _getprogname(), getpid());
+ else
+ snprintf(outname, sizeof(outname), "%s.gmon", _getprogname());
+
fd = _open(outname, O_CREAT|O_TRUNC|O_WRONLY, 0666);
if (fd < 0) {
_warn("_mcleanup: %s", outname);
Modified: head/lib/libc/gmon/moncontrol.3
==============================================================================
--- head/lib/libc/gmon/moncontrol.3 Sun Apr 29 22:01:23 2012
(r234818)
+++ head/lib/libc/gmon/moncontrol.3 Sun Apr 29 22:19:58 2012
(r234819)
@@ -98,6 +98,12 @@ however, all functions in that address r
have their execution time measured.
Profiling begins on return from
.Fn monstartup .
+.Sh ENVIRONMENT
+The following environment variables affect the execution of
+.Nm :
+.Bl -tag -width ".Ev PROFIL_USE_PID"
+.It PROFIL_USE_PID
+If set, the pid of the process is inserted into the filename.
.Sh FILES
.Bl -tag -width progname.gmon -compact
.It Pa progname.gmon
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