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cosmopolitan/libc/sysv/consts/ss.h

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Improve memory safety 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/$MODE/stack.log`. Based on the unit test suite, nothing in the Cosmopolitan repository (except for Python) needs a stack size greater than 30kb. There are also new macros for detecting the size and address of the stack at runtime, e.g. GetStackAddr(). We also now support sigaltstack() so if you want to see nice looking crash reports whenever a stack overflow happens, you can put this in main(): ShowCrashReports(); Under `make MODE=dbg` and `make MODE=asan` the unit testing framework will now automatically print backtraces of memory allocations when things like memory leaks happen. Bugs are now fixed in ASAN global variable overrun detection. The memtrack and asan runtimes also handle edge cases now. The new tools helped to identify a few memory leaks, which are fixed by this change. This change should fix an issue reported in #288 with ARG_MAX limits. Fixing this doubled the performance of MKDEPS.COM and AR.COM yet again.
2021-10-14 00:27:13 +00:00
#ifndef COSMOPOLITAN_LIBC_SYSV_CONSTS_SS_H_
#define COSMOPOLITAN_LIBC_SYSV_CONSTS_SS_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
Change magnum types to match other platforms (#525)
2022-08-05 21:50:08 +00:00
extern const int SS_DISABLE;
Improve memory safety This commit makes numerous refinements to cosmopolitan memory handling. The default stack size has been reduced from 2mb to 128kb. A new macro is now provided so you can easily reconfigure the stack size to be any value you want. Work around the breaking change by adding to your main: STATIC_STACK_SIZE(0x00200000); // 2mb stack If you're not sure how much stack you need, then you can use: STATIC_YOINK("stack_usage_logging"); After which you can `sort -nr o/$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.
2021-10-14 00:27:13 +00:00
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
Fix corner case in Linux stack mappings We need to make sure no existing mappings exist between the MAP_GROWSDOWN page and the guard page, since otherwise it's not going to be able to grow down thus causing difficult to troubleshoot failures.
2022-10-03 20:43:52 +00:00
#define SIGSTKSZ 32768
#define MINSIGSTKSZ 32768 /* xnu defines the highest minimum */
Write tests for new APE loader and fix bugs - Add FreeBSD-specific mmap() flags - Reduce size of the APE loader from 8kb to 4kb - Work towards fixing the Makefile build on WSL - Automate testing of APE no-modify-self behaviors - Make the ape.S shell script code cleaner and tinier - Improve the APE sanity check to test behavior better - Fixed issue with ShowCrashReports() sigaltstack() on BSDs - Delete symbols for S_MODE magnums which wasted compile time If you checked out yesterday's APE commit, please run: rm -f /usr/bin/ape o/tmp/ape /tmp/ape "${TMPDIR:-/tmp}/ape" Because this change fixes certain aspects of the new ABI. We don't have automated migrations for APE loader versions yet. Thanks! You can also download prebuilt binaries here: - https://justine.lol/ape.elf (Linux/FreeBSD/NetBSD/OpenBSD) - https://justine.lol/ape.macho (Apple) Install the appropriate one as `/usr/bin/ape`.
2022-05-22 11:51:02 +00:00
#define SS_ONSTACK 1
#define SS_DISABLE SS_DISABLE
Improve memory safety This commit makes numerous refinements to cosmopolitan memory handling. The default stack size has been reduced from 2mb to 128kb. A new macro is now provided so you can easily reconfigure the stack size to be any value you want. Work around the breaking change by adding to your main: STATIC_STACK_SIZE(0x00200000); // 2mb stack If you're not sure how much stack you need, then you can use: STATIC_YOINK("stack_usage_logging"); After which you can `sort -nr o/$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.
2021-10-14 00:27:13 +00:00
#endif /* COSMOPOLITAN_LIBC_SYSV_CONSTS_SS_H_ */
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