mirror of
https://github.com/jart/cosmopolitan.git
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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.
97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
#define __COSMOPOLITAN__ 1
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#ifndef __COUNTER__
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#define __COUNTER__ __LINE__
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#endif
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#if __GNUC__ + 0 < 2
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#undef __GNUC__
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#elif defined(__GNUC__) && defined(SWIG) /* lool */
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#undef __GNUC__
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#elif defined(__GNUC__) && defined(__NVCC__) /* lool */
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#undef __GNUC__
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#elif !defined(__GNUC__) && defined(__APPLE__) /* modesty */
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#define __GNUC__ 4
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#define __GNUC_MINOR__ 2
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#define __GNUC_PATCHLEVEL__ 1
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#elif !defined(__GNUC__) && defined(__TINYC__)
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#define __GNUC__ 2
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#define __GNUC_MINOR__ 0
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#define __GNUC_PATCHLEVEL__ 0
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#endif
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#if !defined(__x86_64__) && \
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(defined(__amd64__) || (defined(_M_AMD64) && defined(_M_X64)))
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#define __x86_64__ 1
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#elif !defined(__i386__) && ((defined(__i486__) || defined(__i586__) || \
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defined(__i686__) || defined(__i786__)) || \
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_M_IX86 + 0 >= 400)
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#define __i386__ 1
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#elif !defined(__ia16__) && (defined(__MSDOS__) || defined(__BCC__))
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#define __ia16__ 1
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#endif
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#if __ia16__ + __i386__ + __x86_64__ + 0
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#define __x86__ 1
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#endif
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#ifdef _MSC_VER
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#define __STRICT_ANSI__
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#ifndef __STDC__
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#define __STDC__
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#endif
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#endif
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#ifndef __has_attribute
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#define __has_attribute(x) 0
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#endif
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#ifndef __has_builtin
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#define __has_builtin(x) 0
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#endif
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#ifndef __has_cpp_attribute
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#define __has_cpp_attribute(x) 0
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#endif
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#ifdef unix
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#undef unix
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#endif
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#ifdef linux
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#undef linux
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#endif
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#ifndef __BIGGEST_ALIGNMENT__
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#define __BIGGEST_ALIGNMENT__ 16
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#endif
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#define BIGPAGESIZE 0x200000
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#define STACKSIZE 0x20000
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#define FRAMESIZE 0x10000 /* 8086 */
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#define PAGESIZE 0x1000 /* i386+ */
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#define BUFSIZ 0x1000 /* best stdio default */
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#define CACHELINE 0x40 /* nexgen32e */
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#define CHAR_BIT 8 /* b/c von neumann */
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#define ARG_MAX 0x8000 /* b/c windows */
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#define PATH_MAX 248 /* b/c win32 apis limit ~248..260 */
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#define NAME_MAX 63 /* b/c dns */
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#define CHILD_MAX 25 /* only if malloc isn't linked */
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#define OPEN_MAX 16 /* only if malloc isn't linked */
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#define ATEXIT_MAX 32 /* only if malloc isn't linked */
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#define NSIG 128 /* it's complicated */
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#if defined(__LP64__) && !defined(__INT64_TYPE__)
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#include "libc/integral/lp64.inc"
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#elif defined(_MSC_VER) && !defined(__INT64_TYPE__)
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#include "libc/integral/llp64.inc"
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#endif
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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#ifdef __STDC__
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#include "libc/integral/c.inc"
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#else
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#define const
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#define volatile
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#endif
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#ifdef __cplusplus
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#include "libc/integral/cxx.inc"
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#endif
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#endif
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