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cosmopolitan/libc/runtime
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Justine Tunney 379cd77078
Improve memory manager and signal handling 
On Windows, mmap() now chooses addresses transactionally. It reduces the
risk of badness when interacting with the WIN32 memory manager. We don't
throw darts anymore. There is also no more retry limit, since we recover
from mystery maps more gracefully. The subroutine for combining adjacent
maps has been rewritten for clarity. The print maps subroutine is better

This change goes to great lengths to perfect the stack overflow code. On
Windows you can now longjmp() out of a crash signal handler. Guard pages
previously weren't being restored properly by the signal handler. That's
fixed, so on Windows you can now handle a stack overflow multiple times.
Great thought has been put into selecting the perfect SIGSTKSZ constants
so you can save sigaltstack() memory. You can now use kprintf() with 512
bytes of stack available. The guard pages beneath the main stack are now
recorded in the memory manager.

This change fixes getcontext() so it works right with the %rax register.
2024-12-27 01:33:00 -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 Reduce pthread memory usage 2024-12-24 10:30:59 -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 Improve memory manager and signal handling 2024-12-27 01:33:00 -08:00
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
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 Improve memory manager and signal handling 2024-12-27 01:33:00 -08:00
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 Improve memory manager and signal handling 2024-12-27 01:33:00 -08:00
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 Improve memory manager and signal handling 2024-12-27 01:33:00 -08:00
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 Improve memory manager and signal handling 2024-12-27 01:33:00 -08:00
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