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226aaf3547
This commit makes numerous refinements to cosmopolitan memory handling.
The default stack size has been reduced from 2mb to 128kb. A new macro
is now provided so you can easily reconfigure the stack size to be any
value you want. Work around the breaking change by adding to your main:
STATIC_STACK_SIZE(0x00200000); // 2mb stack
If you're not sure how much stack you need, then you can use:
STATIC_YOINK("stack_usage_logging");
After which you can `sort -nr o/$MODE/stack.log`. Based on the unit test
suite, nothing in the Cosmopolitan repository (except for Python) needs
a stack size greater than 30kb. There are also new macros for detecting
the size and address of the stack at runtime, e.g. GetStackAddr(). We
also now support sigaltstack() so if you want to see nice looking crash
reports whenever a stack overflow happens, you can put this in main():
ShowCrashReports();
Under `make MODE=dbg` and `make MODE=asan` the unit testing framework
will now automatically print backtraces of memory allocations when
things like memory leaks happen. Bugs are now fixed in ASAN global
variable overrun detection. The memtrack and asan runtimes also handle
edge cases now. The new tools helped to identify a few memory leaks,
which are fixed by this change.
This change should fix an issue reported in #288 with ARG_MAX limits.
Fixing this doubled the performance of MKDEPS.COM and AR.COM yet again.
55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
#ifndef COSMOPOLITAN_LIBC_SYSV_CONSTS_MAP_H_
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#define COSMOPOLITAN_LIBC_SYSV_CONSTS_MAP_H_
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#include "libc/runtime/symbolic.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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extern const long MAP_32BIT;
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extern const long MAP_ANON;
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extern const long MAP_ANONYMOUS;
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extern const long MAP_DENYWRITE;
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extern const long MAP_EXECUTABLE;
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extern const long MAP_FILE;
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extern const long MAP_FIXED;
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extern const long MAP_GROWSDOWN;
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extern const long MAP_HUGETLB;
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extern const long MAP_HUGE_MASK;
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extern const long MAP_HUGE_SHIFT;
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extern const long MAP_LOCKED;
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extern const long MAP_NONBLOCK;
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extern const long MAP_NORESERVE;
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extern const long MAP_POPULATE;
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extern const long MAP_PRIVATE;
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extern const long MAP_SHARED;
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extern const long MAP_CONCEAL;
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#define MAP_FILE 0
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#define MAP_SHARED 1
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#define MAP_PRIVATE 2
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#define MAP_TYPE 15
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#define MAP_FIXED 16
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#define MAP_FIXED_NOREPLACE 0x8000000
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#define MAP_32BIT SYMBOLIC(MAP_32BIT)
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#define MAP_ANONYMOUS SYMBOLIC(MAP_ANONYMOUS)
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#define MAP_CONCEAL SYMBOLIC(MAP_CONCEAL)
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#define MAP_DENYWRITE SYMBOLIC(MAP_DENYWRITE)
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#define MAP_EXECUTABLE SYMBOLIC(MAP_EXECUTABLE)
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#define MAP_GROWSDOWN SYMBOLIC(MAP_GROWSDOWN)
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#define MAP_HUGETLB SYMBOLIC(MAP_HUGETLB)
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#define MAP_HUGE_MASK SYMBOLIC(MAP_HUGE_MASK)
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#define MAP_HUGE_SHIFT SYMBOLIC(MAP_HUGE_SHIFT)
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#define MAP_LOCKED SYMBOLIC(MAP_LOCKED)
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#define MAP_NONBLOCK SYMBOLIC(MAP_NONBLOCK)
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#define MAP_NORESERVE SYMBOLIC(MAP_NORESERVE)
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#define MAP_POPULATE SYMBOLIC(MAP_POPULATE)
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#define MAP_CONCEAL SYMBOLIC(MAP_CONCEAL)
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#define MAP_ANON MAP_ANONYMOUS
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#define MAP_NOCORE MAP_CONCEAL
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#define MAP_STACK MAP_GROWSDOWN
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#endif /* COSMOPOLITAN_LIBC_SYSV_CONSTS_MAP_H_ */
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