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Make more improvements to threads and mappings

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- NetBSD should now have faster synchronization
- POSIX barriers may now be shared across processes
- An edge case with memory map tracking has been fixed
- Grand Central Dispatch is no longer used on MacOS ARM64
- POSIX mutexes in normal mode now use futexes across processes
This commit is contained in:
Justine Tunney 2024-07-24 01:05:00 -07:00
parent 2187d6d2dd
commit e398f3887c
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GPG key ID: BE714B4575D6E328
20 changed files with 566 additions and 171 deletions
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12
libc/thread/thread.h
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@ -46,7 +46,7 @@ COSMOPOLITAN_C_START_
#define PTHREAD_RWLOCK_INITIALIZER {0}
#define PTHREAD_MUTEX_INITIALIZER {0}
#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP {0, 0, PTHREAD_MUTEX_RECURSIVE}
#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP {0, {}, PTHREAD_MUTEX_RECURSIVE}
typedef uintptr_t pthread_t;
typedef int pthread_id_np_t;
@ -66,7 +66,10 @@ typedef struct pthread_spinlock_s {
typedef struct pthread_mutex_s {
uint32_t _nsync;
int32_t _pid;
union {
int32_t _pid;
_Atomic(int32_t) _futex;
};
_Atomic(uint64_t) _word;
} pthread_mutex_t;
@ -92,7 +95,10 @@ typedef struct pthread_rwlock_s {
} pthread_rwlock_t;
typedef struct pthread_barrier_s {
void *_nsync;
int _count;
char _pshared;
_Atomic(int) _counter;
_Atomic(int) _waiters;
} pthread_barrier_t;
typedef struct pthread_attr_s {