Commit Graph

3 Commits

Author SHA1 Message Date
Jim Warner
6e51196589 library: provided for cpu p-core/e-core identification
With Intel's 12th generation Alder Lake processors now
providing two distinct types of core, it would be nice
if the library offered some sort of clue to core type.

Well, with this patch it does. We'll have 2 additional
enumerators. One deals with the cpu's core association
and the other provides the type of that core (P or E).

[ now, all we need is for some program to exploit it ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-09-28 17:30:56 +10:00
Jim Warner
046883b9d3 library: address an 'uninitialised value' VALGRIND bug
Thanks to valgrind and his --track-origins=yes option,
the problem and solution was suggested as shown below.

[ and it was created in that commit referenced below ]

But, after attacking this problem by adding a memset()
call in pids.c, a 2nd valgrind oops, also shown below,
was encountered. The dynamically acquired 'cmd' again!

[ might help to explain why changes appear excessive ]

Reference(s):
. 1st valgrind discovery
==11111== Conditional jump or move depends on uninitialised value(s)
==11111==    at 0x13425D: stat2proc (readproc.c:582)
==11111==    by 0x137436: look_up_our_self (readproc.c:1613)
==11111==    by 0x132196: fatal_proc_unmounted (pids.c:1388)
==11111==    by 0x11BA4D: before (top.c:3580)
==11111==    by 0x127E10: main (top.c:7173)
==11111==  Uninitialised value was created by a stack allocation
==11111==    at 0x132165: fatal_proc_unmounted (pids.c:1381)

. Jul, 2022 - fatal_proc_unmounted refactored
commit 52bd019d8c

. 2nd valgrind discovery
==22222== 16 bytes in 1 blocks are definitely lost
==22222==    by 0x4A0E60E: strdup (strdup.c:42)
==22222==    by 0x133D00: stat2proc (readproc.c:587)
==22222==    by 0x136E67: look_up_our_self (readproc.c:1613)
==22222==    by 0x131BC7: fatal_proc_unmounted (pids.c:1390)
==22222==    by 0x11B7C6: before (top.c:3580)
==22222==    by 0x127828: main (top.c:7173)

Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-09-12 22:15:28 +10:00
Craig Small
3d0871728b build-sys: Relocate library to library/
All the dependent programs needed to have their includes moved too

Signed-off-by: Craig Small <csmall@dropbear.xyz>
2022-08-29 19:02:44 +10:00