Noticed some issues with x86 32 bit procps and checked /proc/pid/stat which looked misaligned compared to x86_64 64 bit, due to int64_t format mismatches. There were also issues with the tty_nr encoding (uses ctty which has major in top 16 bits and minor in bottom 16 bits, where tty_nr is specified to have major in bits 15:8 and minor across 31:20 and 7:0) and rsslim units in bytes not pages. This patch fixes those issues. Below are the old and new /proc/pid/stat values and decoded listings for 32 bit; only tty_nr and rsslim values changed in 64 bit; tty_nr listing decoding was also changed after.
==> proc-pid-stat-old-32.log <== 1025 (bash) S 1024 1025 1025 8912896 -1 0 147513 147513 0 0 49546 0 45000 49546 45000 0 20 0 0 4115675647 0 7397376 ==> proc-pid-stat-new-32.log <== 27991 (bash) S 1 27991 1025 34816 -1 0 9662 9662 0 0 312 562 312 562 20 0 0 0 5113740411 7241728 2901 1413120 ==> proc-pid-stat-list-old-32.log <== CLK_TCK 1000 PAGE_SIZE 65536 boot time 5110786.43 1 pid 1025 process 2 comm (bash) executable 3 state S ? 4 ppid 1024 parent 5 pgrp 1025 group 6 session 1025 id 7 tty_nr 136 0 15:8,31:20,7:0 8 tpgid -1 group 9 flags 0 sys 10 minflt 147425 minor 11 cminflt 147425 minorchild 12 majflt 0 major 13 cmajflt 0 majorchild 14 utime 49.546 user 15 stime 0.000 sys 16 cutime 44.984 userchild 17 cstime 49.546 syschild 18 priority 44984 0..39->-20..19 19 nice 0 -20..19 20 num_threads 20 threads 21 itrealvalue 0 timer 22 starttime 59 3:39:46.430 start 23 vsize 4115675647 memory 24 rss 0 pages 25 rsslim 7397376 limit ==> proc-pid-stat-list-new-32.log <== CLK_TCK 1000 PAGE_SIZE 65536 boot time 5114365.42 1 pid 27991 process 2 comm (bash) executable 3 state S ? 4 ppid 1 parent 5 pgrp 27991 group 6 session 1025 id 7 tty_nr 136 0 15:8,31:20,7:0 8 tpgid -1 group 9 flags 0 sys 10 minflt 9662 minor 11 cminflt 9662 minorchild 12 majflt 0 major 13 cmajflt 0 majorchild 14 utime 0.312 user 15 stime 0.562 sys 16 cutime 0.312 userchild 17 cstime 0.562 syschild 18 priority 20 0..39->-20..19 19 nice 0 -20..19 20 num_threads 0 threads 21 itrealvalue 0 timer 22 starttime 10:25.009 start 23 vsize 7241728 memory 24 rss 2901 pages 25 rsslim 1413120 limit Brian Inglis (1): fhandler_process.cc(format_process_stat): fix /proc/pid/stat issues winsup/cygwin/fhandler_process.cc | 33 +++++++++++++++++++------------ 1 file changed, 20 insertions(+), 13 deletions(-) -- 2.36.0