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Add cpu / mem / fsz limits to build system

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Thanks to all the refactorings we now have the ability to enforce
reasonable limitations on the amount of resources any individual
compile or test can consume. Those limits are currently:

- `-C 8` seconds of 3.1ghz CPU time
- `-M 256mebibytes` of virtual memory
- `-F 100megabyte` limit on file size

Only one file currently needs to exceed these limits:

    o/$(MODE)/third_party/python/Objects/unicodeobject.o: \
        QUOTA += -C16  # overrides cpu limit to 16 seconds

This change introduces a new sizetol() function to LIBC_FMT for parsing
byte or bit size strings with Si unit suffixes. Functions like atoi()
have been rewritten too.
This commit is contained in:
Justine Tunney 2021-08-13 11:18:25 -07:00
parent 9b29358511
commit e963d9c8e3
49 changed files with 1802 additions and 553 deletions
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8
libc/sysv/consts.sh
View file

@ -534,10 +534,10 @@ syscon sicode CLD_DUMPED 3 3 3 3 3 3 # SIGCHLD; child terminated
syscon sicode CLD_TRAPPED 4 4 4 4 4 4 # SIGCHLD; traced child trapped; unix consensus
syscon sicode CLD_STOPPED 5 5 5 5 5 5 # SIGCHLD; child stopped; unix consensus
syscon sicode CLD_CONTINUED 6 6 6 6 6 6 # SIGCHLD; stopped child continued; unix consensus
syscon sicode TRAP_BRKPT 1 1 1 1 1 1 # SIGTRAP; unix consensus
syscon sicode TRAP_TRACE 2 2 2 2 2 2 # SIGTRAP; unix consensus
syscon sicode SEGV_MAPERR 1 1 1 1 1 1 # SIGSEGV; unix consensus
syscon sicode SEGV_ACCERR 2 2 2 2 2 2 # SIGSEGV; unix consensus
syscon sicode TRAP_BRKPT 1 1 1 1 1 1 # SIGTRAP; process breakpoint; unix consensus
syscon sicode TRAP_TRACE 2 2 2 2 2 2 # SIGTRAP; process trace trap; unix consensus
syscon sicode SEGV_MAPERR 1 1 1 1 1 1 # SIGSEGV; address not mapped to object; unix consensus
syscon sicode SEGV_ACCERR 2 2 2 2 2 2 # SIGSEGV; invalid permissions for mapped object; unix consensus
syscon sicode FPE_INTDIV 1 7 2 1 1 1 # SIGFPE; integer divide by zero
syscon sicode FPE_INTOVF 2 8 1 2 2 2 # SIGFPE; integer overflow
syscon sicode FPE_FLTDIV 3 1 3 3 3 3 # SIGFPE; floating point divide by zero