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29d794863c
Previously, a thread M invoking fork would acquire locks in this order: (M1) malloc arena locks (in the registered fork handler) (M2) libio list lock A thread F invoking flush (NULL) would acquire locks in this order: (F1) libio list lock (F2) individual _IO_FILE locks A thread G running getdelim would use this order: (G1) _IO_FILE lock (G2) malloc arena lock After executing (M1), (F1), (G1), none of the threads can make progress. This commit changes the fork lock order to: (M'1) libio list lock (M'2) malloc arena locks It explicitly encodes the lock order in the implementations of fork, and does not rely on the registration order, thus avoiding the deadlock. |
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| .. | ||
| examples | ||
| argp.texi | ||
| arith.texi | ||
| charset.texi | ||
| check-safety.sh | ||
| conf.texi | ||
| contrib.texi | ||
| creature.texi | ||
| crypt.texi | ||
| ctype.texi | ||
| debug.texi | ||
| dir | ||
| errno.texi | ||
| fdl-1.3.texi | ||
| filesys.texi | ||
| freemanuals.texi | ||
| getopt.texi | ||
| header.texi | ||
| install-plain.texi | ||
| install.texi | ||
| intro.texi | ||
| io.texi | ||
| ipc.texi | ||
| job.texi | ||
| lang.texi | ||
| lgpl-2.1.texi | ||
| libc-texinfo.sh | ||
| libc.texinfo | ||
| libcbook.texi | ||
| libdl.texi | ||
| libm-err-tab.pl | ||
| llio.texi | ||
| locale.texi | ||
| macros.texi | ||
| maint.texi | ||
| Makefile | ||
| math.texi | ||
| memory.texi | ||
| message.texi | ||
| nss.texi | ||
| nsswitch.texi | ||
| pattern.texi | ||
| pipe.texi | ||
| platform.texi | ||
| probes.texi | ||
| process.texi | ||
| resource.texi | ||
| search.texi | ||
| setjmp.texi | ||
| signal.texi | ||
| socket.texi | ||
| startup.texi | ||
| stdio-fp.c | ||
| stdio.texi | ||
| string.texi | ||
| summary.awk | ||
| sysinfo.texi | ||
| syslog.texi | ||
| terminal.texi | ||
| texinfo.tex | ||
| texis.awk | ||
| threads.texi | ||
| time.texi | ||
| tsort.awk | ||
| users.texi | ||
| xtract-typefun.awk | ||