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cosmopolitan/libc/thread/attr.h

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[WIP] Threading (#282) * Thread creation * Proper thread creation and exit * Join/Detach protocol * Added semaphore with futex (hopefully fast)
2021-10-13 18:26:05 +00:00
#ifndef COSMOPOLITAN_LIBC_THREAD_ATTR_H_
#define COSMOPOLITAN_LIBC_THREAD_ATTR_H_
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/$MODE/stack.log`. Based on the unit test suite, nothing in the Cosmopolitan repository (except for Python) needs a stack size greater than 30kb. There are also new macros for detecting the size and address of the stack at runtime, e.g. GetStackAddr(). We also now support sigaltstack() so if you want to see nice looking crash reports whenever a stack overflow happens, you can put this in main(): ShowCrashReports(); Under `make MODE=dbg` and `make MODE=asan` the unit testing framework will now automatically print backtraces of memory allocations when things like memory leaks happen. Bugs are now fixed in ASAN global variable overrun detection. The memtrack and asan runtimes also handle edge cases now. The new tools helped to identify a few memory leaks, which are fixed by this change. This change should fix an issue reported in #288 with ARG_MAX limits. Fixing this doubled the performance of MKDEPS.COM and AR.COM yet again.
2021-10-14 00:27:13 +00:00
#define CTHREAD_CREATE_DETACHED 1
#define CTHREAD_CREATE_JOINABLE 0
[WIP] Threading (#282) * Thread creation * Proper thread creation and exit * Join/Detach protocol * Added semaphore with futex (hopefully fast)
2021-10-13 18:26:05 +00:00
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
/**
* @fileoverview cosmopolitan thread attributes
*/
typedef struct cthread_attr_t {
Improve memory safety This commit makes numerous refinements to cosmopolitan memory handling. The default stack size has been reduced from 2mb to 128kb. A new macro is now provided so you can easily reconfigure the stack size to be any value you want. Work around the breaking change by adding to your main: STATIC_STACK_SIZE(0x00200000); // 2mb stack If you're not sure how much stack you need, then you can use: STATIC_YOINK("stack_usage_logging"); After which you can `sort -nr o/$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
size_t stacksize, guardsize;
int mode;
[WIP] Threading (#282) * Thread creation * Proper thread creation and exit * Join/Detach protocol * Added semaphore with futex (hopefully fast)
2021-10-13 18:26:05 +00:00
} cthread_attr_t;
int cthread_attr_init(cthread_attr_t*);
int cthread_attr_destroy(cthread_attr_t*);
int cthread_attr_setstacksize(cthread_attr_t*, size_t);
size_t thread_attr_getstacksize(const cthread_attr_t*);
int cthread_attr_setguardsize(cthread_attr_t*, size_t);
size_t cthread_attr_getguardsize(const cthread_attr_t*);
int cthread_attr_setdetachstate(cthread_attr_t*, int);
int cthread_attr_getdetachstate(const cthread_attr_t*);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_THREAD_ATTR_H_ */
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