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Make improvements to locking

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This change makes pthread_mutex_lock() as fast as _spinlock() by
default. Thread instability issues on NetBSD have been resolved.
Improvements made to gdtoa thread code. Crash reporting will now
synchronize between threads in a slightly better way.
This commit is contained in:
Justine Tunney 2022-06-19 01:13:03 -07:00
parent 25041b8026
commit d5312b60f7
60 changed files with 890 additions and 629 deletions
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14
third_party/gdtoa/lock.h vendored
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@ -7,13 +7,19 @@ COSMOPOLITAN_C_START_
int __gdtoa_lock(void);
int __gdtoa_unlock(void);
int __gdtoa_lock1(void);
int __gdtoa_unlock1(void);
#if defined(__GNUC__) && !defined(__llvm__) && !defined(__STRICT_ANSI__)
#define __gdtoa_lock() _NOPL0("__threadcalls", __gdtoa_lock)
#define __gdtoa_unlock() _NOPL0("__threadcalls", __gdtoa_unlock)
#define __gdtoa_lock() _NOPL0("__threadcalls", __gdtoa_lock)
#define __gdtoa_unlock() _NOPL0("__threadcalls", __gdtoa_unlock)
#define __gdtoa_lock1() _NOPL0("__threadcalls", __gdtoa_lock1)
#define __gdtoa_unlock1() _NOPL0("__threadcalls", __gdtoa_unlock1)
#else
#define __gdtoa_lock() (__threaded ? __gdtoa_lock() : 0)
#define __gdtoa_unlock() (__threaded ? __gdtoa_unlock() : 0)
#define __gdtoa_lock() (__threaded ? __gdtoa_lock() : 0)
#define __gdtoa_unlock() (__threaded ? __gdtoa_unlock() : 0)
#define __gdtoa_lock1() (__threaded ? __gdtoa_lock1() : 0)
#define __gdtoa_unlock1() (__threaded ? __gdtoa_unlock1() : 0)
#endif
COSMOPOLITAN_C_END_