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cosmopolitan/libc/runtime
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Justine Tunney af7bd80430
Eliminate cyclic locks in runtime 
This change introduces a new deadlock detector for Cosmo's POSIX threads
implementation. Error check mutexes will now track a DAG of nested locks
and report EDEADLK when a deadlock is theoretically possible. These will
occur rarely, but it's important for production hardening your code. You
don't even need to change your mutexes to use the POSIX error check mode
because `cosmocc -mdbg` will enable error checking on mutexes by default
globally. When cycles are found, an error message showing your demangled
symbols describing the strongly connected component are printed and then
the SIGTRAP is raised, which means you'll also get a backtrace if you're
using ShowCrashReports() too. This new error checker is so low-level and
so pure that it's able to verify the relationships of every libc runtime
lock, including those locks upon which the mutex implementation depends.
2024-12-16 22:25:12 -08:00
..
.cosmo Move zipos into runtime package 2023-08-11 23:14:02 -07:00
__sigsetjmp_tail.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
at_quick_exit.c Eliminate cyclic locks in runtime 2024-12-16 22:25:12 -08:00
BUILD.mk Fix build break 2024-06-29 04:34:27 -07:00
clktck.h Reduce header complexity 2023-11-28 14:39:42 -08:00
clone-linux.S Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
clone-openbsd.S Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
clone-xnu.S Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
clone.c Eliminate cyclic locks in runtime 2024-12-16 22:25:12 -08:00
closesymboltable.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
cosmo.S Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
cosmo2.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
cxa_thread_atexit.c Improve multithreading 2024-07-21 14:40:45 -07:00
e820.internal.h Support malloc() on bare metal 2021-02-24 00:53:24 -08:00
efimain.greg.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
efipostboot.S Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
enable_tls.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
exit.c Get rid of .internal.h convention in LIBC_INTRIN 2024-07-19 19:38:00 -07:00
fenv.h Introduce support for trapping math 2024-04-30 13:38:43 -07:00
findcombinary.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
fltrounds.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
fpathconf.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
fpreset.S Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
ftrace-hook.S Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
ftrace_install.c Rewrite memory manager 2024-06-22 05:45:11 -07:00
ftrace_stackdigs.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
ftraceinit.greg.c Eliminate cyclic locks in runtime 2024-12-16 22:25:12 -08:00
ftracer.c Eliminate cyclic locks in runtime 2024-12-16 22:25:12 -08:00
getargmax.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
getavphyspages.c Create variables for page size 2024-07-18 21:16:53 -07:00
getdosargv.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
getdosenviron.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
getinterpreterexecutablename.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
getlogin.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
getlogin_r.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
getphyspages.c Create variables for page size 2024-07-18 21:16:53 -07:00
getresourcelimit.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
getsymbol.c Make improvements 2024-09-01 01:27:47 -07:00
getsymbolbyaddr.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
getsymbolname.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
getsymboltable.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
getsysctl.c Add sysctlbyname() for MacOS 2024-05-02 23:21:43 -07:00
hook.greg.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
inflate.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
init.S Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
interceptflag.greg.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
internal.h Rewrite memory manager 2024-06-22 05:45:11 -07:00
isstackoverflow.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
jit.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
login_tty.c Get rid of .internal.h convention in LIBC_INTRIN 2024-07-19 19:38:00 -07:00
mapstack.c Make mmap() scalable 2024-07-05 23:26:00 -07:00
memtrack.internal.h Fix bugs with new memory manager 2024-06-29 10:53:57 -07:00
metalprintf.greg.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
metalprintf.internal.h Reduce header complexity 2023-11-28 14:39:42 -08:00
mman.internal.h Reduce header complexity 2023-11-28 14:39:42 -08:00
morph.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
morph_tls.c Release Cosmopolitan v3.3 2024-02-20 13:27:59 -08:00
openexecutable.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
opensymboltable.greg.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
pathconf.h Reduce header complexity 2023-11-28 14:39:42 -08:00
pc.internal.h Run clang-format (#1197) 2024-06-01 16:30:43 -04:00
printgarbage.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
progname.S Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
pthread_keys.c Introduce ctl::set and ctl::map 2024-06-23 22:27:11 -07:00
quick_exit.c Add C++ demangling to privileged runtime 2024-06-01 20:10:58 -07:00
runtime.h Fix fork() crash on Windows 2024-10-12 15:38:58 -07:00
set_tls.c Eliminate cyclic locks in runtime 2024-12-16 22:25:12 -08:00
sigsetjmp.S Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
stack.h Avoid an --ftrace crash on Windows 2024-10-07 18:39:25 -07:00
straceinit.greg.c Share file offset across execve() on Windows 2024-08-03 17:48:00 -07:00
symbols.c Delete ASAN 2024-06-22 05:45:49 -07:00
symbols.internal.h Reduce header complexity 2023-11-28 14:39:42 -08:00
sysconf.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
sysconf.h Make realloc() go 100x faster on Linux/NetBSD 2024-07-07 12:40:30 -07:00
syslib.internal.h Make malloc scalable on all platforms 2024-08-15 23:32:53 -07:00
utmp.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
utmp.h Reduce header complexity 2023-11-28 14:39:42 -08:00
utmpx.h Reduce header complexity 2023-11-28 14:39:42 -08:00
valist.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
warnifpowersave.c Restore support for AMD K8 2024-07-24 08:59:29 -07:00
weakfree.c Graduate some clock_gettime() constants to #define 2024-07-22 07:14:35 -07:00
winargs.internal.h Make improvements 2024-02-12 10:23:00 -08:00
winmain.greg.c Spoof PID across execve() on Windows 2024-12-14 13:13:08 -08:00
zipos-access.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
zipos-close.c Rename __zipos_free -> __zipos_drop (#1043) 2023-12-26 12:08:57 -05:00
zipos-fcntl.c Run clang-format (#1197) 2024-06-01 16:30:43 -04:00
zipos-find.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
zipos-fstat.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
zipos-get.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
zipos-inode.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
zipos-mmap.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
zipos-normpath.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
zipos-notat.c Add missing ICANON features 2024-09-05 03:17:19 -07:00
zipos-open.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
zipos-parseuri.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
zipos-read.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
zipos-seek.c Skip the CAS on new_pos < 0 (#1080) 2024-01-12 21:08:28 -08:00
zipos-stat-impl.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
zipos-stat.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
zipos.internal.h Remove bad defines from early days of project 2024-07-24 12:11:21 -07:00
zipos.S Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00